Global NX

The ADS1286 is a 12-bit, 20kHz analog-to-digital converter with a differential input and sample and hold amplifier and consumes only 250µA of supply current. The ADS1286 offers an SPI and SSI compatible serial interface for communications over a two or three wire interface. The combination of a serial two wire interface and micropower consumption makes the ADS1286 ideal for remote applications and for those requiring isolation. The ADS1286 is available in a 8-pin plastic mini DIP and a 8-lead SOIC.

The BUF634 is a high speed, unity-gain open-loop buffer recommended for a wide range of applications. The BUF634 can be used inside the feedback loop of op amps to increase output current, eliminate thermal feedback, and improve capacitive load drive. For low power applications, the BUF634 operates on 1.5-mA quiescent current with 250-mA output, 2000-V/µs slew rate, and 30-MHz bandwidth. Bandwidth can be adjusted from 30 MHz to 180 MHz by connecting a resistor between V– and the BW Pin. Output circuitry is fully protected by internal current limit and thermal shut-down, making the device rugged and easy to use. The BUF634 is available in a variety of packages to suit mechanical and power dissipation requirements. Types include 8-pin PDIP, SOIC-8 surface-mount, 5- lead TO-220, and a 5-lead DDPAK-TO-263 surfacemount plastic power package. The upgraded device, BUF634A offers a wider bandwidth (210 MHz) and a higher slew rate (3750 V/µs) at 40% lower quiescent current. See the Device Comparison Table for a selection of unitygain, open-loop buffers from Texas Instruments.

The INA117 is a precision unity-gain difference amplifier with very high common-mode input voltage range. It is a single monolithic IC consisting of a precision op amp and integrated thin-film resistor network. It can accurately measure small differential voltages in the presence of common-mode signals up to ±200V. The INA117 inputs are protected from momentary common-mode or differential overloads up to ±500V. In many applications, where galvanic isolation is not essential, the INA117 can replace isolation amplifiers. This can eliminate costly isolated input-side power supplies and their associated ripple, noise and quiescent current. The INA117’s 0.001% nonlinearity and 200kHz bandwidth are superior to those of conventional isolation amplifiers. The INA117 is available in 8-pin plastic mini-DIP and SO-8 surface-mount packages, specified for the –40°C to +85°C temperature range. The metal TO-99 models are available specified for the –40°C to +85°C and –55°C to +125°C temperature range

The INA118 is a low-power, general-purpose instrumentation amplifier offering excellent accuracy. The versatile, three op amp design and small size make this device an excellent choice for a wide range of applications. Current-feedback input circuitry provides wide bandwidth, even at high gain (70 kHz at G = 100). A single external resistor sets any gain from 1 to 10000. Internal input protection can withstand up to ±40 V without damage. The INA118 is laser-trimmed for low offset voltage (50 µV), drift (0.5 µV/°C), and high common-mode rejection (110 dB at G = 1000). The INA118 operates with power supplies as low as ±2.25 V, and quiescent current is only 350 µA, making this device an excellent choice for battery-operated systems. The INA118 is available in 8-pin plastic DIP and SO-8 surface-mount packages, and specified for the –40°C to +85°C temperature range. The upgraded INA818 offers a lower input stage offset voltage (35 µV, maximum), lower input bias current (0.5 nA maximum) and lower noise (8 nV/√Hz) at the same quiescent current. See the Device Comparison Table for a selection of precision instrumentation amplifiers from Texas Instruments.

The INA121 is a FET-input, low power instrumentation amplifier offering excellent accuracy. Its versatile three-op amp design and very small size make it ideal for a variety of general purpose applications. Low bias current (±4pA) allows use with high impedance sources. Gain can be set from 1V to 10,000V/V with a single external resistor. Internal input protection can withstand up to ±40V without damage. The INA121 is laser-trimmed for very low offset voltage (±200µV), low offset drift (±2µV/°C), and high common-mode rejection (106dB at G = 100). It operates on power supplies as low as ±2.25V (+4.5V), allowing use in battery operated and single 5V systems. Quiescent current is only 450µA. Package options include 8-pin plastic DIP and SO-8 surface mount. All are specified for the –40°C to +85°C industrial temperature range.

The INA126 and INA2126 (INAx126) are precision instrumentation amplifiers for accurate, low-noise, differential-signal acquisition. The two-op-amp design provides excellent performance with low quiescent current (175 μA/channel). These features combined with a wide operating voltage range of ±1.35 V to ±18 V make the INAx126 a great choice for portable instrumentation and data acquisition systems. Gain can be set from 5 V/V to 10000 V/V with a single external resistor. Precision input circuitry provides low offset voltage (250 μV, maximum), low offset voltage drift (3 μV/°C, maximum), and excellent common-mode rejection. All versions are specified for the –40°C to +85°C industrial temperature range. 

The ISO124 is a precision isolation amplifier incorporating a novel duty cycle modulationdemodulation technique. The signal is transmitted digitally across a 2-pF differential capacitive barrier. With digital modulation, the barrier characteristics do not affect signal integrity, thus resulting in excellent reliability and good high-frequency transient immunity across the barrier. Both barrier capacitors are imbedded in the plastic body of the package. The ISO124 is easy to use. No external components are required for operation. The key specifications are 0.010% maximum nonlinearity, 50-kHz signal bandwidth, and 200-µV/°C VOS drift. A power supply range of ±4.5 V to ±18 V, and quiescent currents of ±5 mA on VS1 and ±5.5 mA on VS2 make the ISO124 device a good choice for a wide range of applications. The ISO124 is available in 16-pin PDIP and 28-lead SOIC plastic surface-mount packages.

The OPA129 is an ultra-low bias current monolithic operational amplifier offered in an 8-pin PDIP and SO-8 package. Using advanced geometry dielectrically-isolated FET (Difet®) inputs, this monolithic amplifier achieves a high performance level. Difet fabrication eliminates isolation-junction leakage current—the main contributor to input bias current with conventional monolithic FETs. This reduces input bias current by a factor of 10 to 100. Very low input bias current can be achieved without resorting to small-geometry FETs or CMOS designs which can suffer from much larger offset voltage, voltage noise, drift, and poor power-supply rejection. The OPA129 special pinout eliminates leakage current that occurs with other op amps. Pins 1 and 4 have no internal connection, allowing circuit board guard traces— even with the surface-mount package version. OPA129 is available in 8-pin DIP and SO packages, specified for operation from –40°C to +85°C. 

The OPA177 precision bipolar op amp feature very low offset voltage and drift. Laser-trimmed offset, drift and input bias current virtually eliminate the need for costly external trimming. High performance and low cost make these devices an excellent choice for a wide range of precision instrumentation. The low quiescent current of the OPA177 dramatically reduces warm-up drift and errors due to thermoelectric effects in input interconnections. The OPA177 provides an effective alternative to chopperstabilized amplifiers. The low noise of the OPA177 helps maintain maximum signal integrity. OPA177 performance grade-outs are available. Packaging options include 8-pin plastic DIP and SO-8 surface-mount packages.

The OPA2134PA is a premium-grade dual operational amplifier from Texas Instruments, designed specifically for high-fidelity audio and professional sound applications. Built using advanced precision JFET input technology, this IC delivers ultra-low distortion, wide bandwidth, and superior dynamic range, making it an industry favorite for audiophile and professional-grade equipment.

Housed in an 8-pin DIP package, the OPA2134PA provides dual op-amp channels with excellent slew rate and low noise performance. Its low total harmonic distortion (THD+N of 0.00008%) and wide output voltage swing ensure clean, natural, and distortion-free sound reproduction. With a wide supply voltage range, it integrates easily into both consumer and industrial-grade audio designs.

Key Features:

Architecture: Dual operational amplifier (Op-Amp)

• Input Stage: JFET input with high input impedance

• Distortion: Ultra-low THD+N (0.00008% typical)

• Noise Performance: Low noise (8 nV/√Hz) for clean audio

• Slew Rate: High slew rate (20 V/µs) for excellent transient response

• Bandwidth: Wide gain-bandwidth (8 MHz)

• Operating Voltage: ±2.5V to ±18V supply range

• Package: 8-Pin DIP (through-hole) for easy prototyping and integration

• Temperature Range: –40°C to +85°C (industrial grade)

Applications:

• High-fidelity audio amplifiers and preamplifiers

• Professional audio mixers and sound equipment

• Musical instruments and effects processors

• DAC output and ADC input buffering

• Active filters and equalizers

• Home theater and audiophile-grade systems

Why Choose OPA2134PA from Global Nx?

At Global Nx, we supply 100% original Texas Instruments OPA2134PA ICs, ensuring reliability and consistency in your audio designs. With our lowest MOQ, competitive pricing, and Pan India delivery, you get authentic components without delays—backed by our trusted service and industry expertise.

The OPA27 and OPA37 are ultra-low noise, high-precision monolithic operational amplifiers. Laser-trimmed thin-film resistors provide excellent long-term voltage offset stability and allow superior voltage offset compared to common zener-zap techniques. A unique bias current cancellation circuit allows bias and offset current specifications to be met over the full –40°C to +85°C temperature range. The OPA27 is internally compensated for unity-gain stability. The decompensated OPA37 requires a closed-loop gain ≥ 5. The Texas Instruments’ OPA27 and OPA37 are improved replacements for the industry-standard OP-27 and OP-37. 

The OPA404 is a high performance monolithic Difet®(dielectrically-isolated FET) quad operational amplifier. It offers an unusual combination of verylow bias current together with wide bandwidth and fast slew rate. Noise, bias current, voltage offset, drift, and speed are superior to BIFET® amplifiers. Laser-trimming of thin-film resistors gives very low offset and drift—the best available in a quad FET op amp. The OPA404's input cascode design allows high precision input specifications and uncompromised highspeed performance. Standard quad op amp pin configuration allows upgrading of existing designs to higher performance levels. The OPA404 is unity-gain stable.

The OPA547 is a low-cost, high-voltage/high-current operational amplifier ideal for driving a wide variety of loads. A laser-trimmed monolithic integrated circuit provides excellent low-level signal accuracy and high output voltage and current. The OPA547 operates from either single or dual supplies for design flexibility. In single-supply operation, the input common-mode range extends below ground. The OPA547 is internally protected against over-temperature conditions and current overloads. In addition, the OPA547 was designed to provide an accurate, user-selected current limit. Unlike other designs which use a “power” resistor in series with the output current path, the OPA547 senses the load indirectly. This allows the current limit to be adjusted from 0mA to 750mA with a 0 to 150µA control signal. This is easily done with a resistor/potentiometer or controlled digitally with a voltage-out or current-out DAC. The Enable/Status (E/S) pin provides two functions. An input on the pin not only disables the output stage to effectively disconnect the load, but also reduces the quiescent current to conserve power. The E/S pin output can be monitored to determine if the OPA547 is in thermal shutdown. The OPA547 is available in an industry-standard 7-lead staggered and straight lead TO-220 package, and a 7-lead DDPAK surface-mount plastic power package. The copper tab allows easy mounting to a heat sink or circuit board for excellent thermal performance. It is specified for operation over the extended industrial temperature range, –40°C to +85°C.

The OPA606 is a wide-bandwidth monolithic
dielectrically-isolated FET (Difet®) operational ampli- fier featuring a wider bandwidth and lower bias cur- rent than BIFET ® LF156A amplifiers. Bias current is
specified under warmed-up and operating conditions, as opposed to a junction temperature of +25 °C. Laser-trimmed thin-film resistors offer improved off- set voltage and noise performance. The OPA606 is internally compensated for unity-gain
stability.

The PGA202 is a monolithic instrumentation amplifier with digitally controlled gains of 1, 10, 100, and 1000. The PGA203 provides gains of 1, 2, 4, and 8. Both have TTL or CMOS-compatible inputs for easy microprocessor interface. Both have FET inputs and a new transconductance circuitry that keeps the bandwidth nearly constant with gain. Gain and offsets are laser trimmed to allow use without any external components. Both amplifiers are available in ceramic or plastic packages. The ceramic package is specified over the full industrial temperature range while the plastic package covers the commercial range.

The VFC320 monolithic voltage-to-frequency and frequency-tovoltage converter provides a simple low cost method of converting analog signals into digital pulses. The digital output is an open collector and the digital pulse train repetition rate is proportional to the amplitude of the analog input voltage. Output pulses are compatible with TTL, and CMOS logic families. High linearity (0.005%, max at 10kHz FS) is achieved with relatively few external components. Two external resistors and two external capacitors are required to operate. Full scale frequency and input voltage are determined by a resistor in series with –In and two capacitors (one-shot timing and input amplifier integration). The other resistor is a non-critical open collector pull-up (fOUT to +VCC). The VFC320 is available in two performance grades. The VFC320 is specified for the –25°C to +85°C, range.

The XTR117 is a precision current output converter designed to transmit analog 4-20mA signals over an industry-standard current loop. It provides accurate current scaling and output current limit functions. The on-chip voltage regulator (5V) can be used to power external circuitry. A current return pin (IRET) senses any current used in external circuitry to assure an accurate control of the output current. The XTR117 is a fundamental building block of smart sensors using 4-20mA current transmission. The XTR117 is specified for operation over the extended industrial temperature range, −40°C to +125°C

The XTR501 contains a high efficiency DC/DC con-verter and 4-20mA three wire current transmitter. Itprovides regulated bridge excitation, optional halfbridge, differential inputs and current transmitter nec-essary for the excitation and signal conditioning oflow impedance bridge sensors and high integrity sig-nal transmission.The DC/DC converter is capable of supplying 1W intoa regulated bridge voltage of 1.5V to 5.0V from asupply of 11.4V to 30V. The combination of a lowstartup current and high efficiency current step-upallows for a combined supply line resistance of up to100Ω when exciting low impedance sensors.The instrumentation amplifier of the current transmit-ter can be used over a wide range of gains, accommo-dating a variety of input signals and sensors.The XTR501 is particularly suited to excitation ofhigh current/low impedance sensors used in bridgeapplications allowing the use of lighter cabling lead-ing to considerable savings on cabling costs

The CAT24C44 Serial NVRAM is a 256-bit nonvolatile memory organized as 16 words x 16 bits. The high speed Static RAM array is bit for bit backed up by a nonvolatile EEPROM array which allows for easy transfer of data from RAM array to EEPROM (STORE) and from EEPROM to RAM (RECALL). STORE operations are completed in 10ms max. and RECALL operations typically within 1.5µs. The CAT24C44 features unlimited RAM write operations either through external RAM writes or internal recalls from EEPROM. Internal false PIN CONFIGURATION store protection circuitry prohibits STORE operations when VCC is less than 3.5V (typical) ensuring EEPROM data integrity. The CAT24C44 is manufactured using Catalyst’s advanced CMOS floating gate technology. It is designed to endure 100,000 program/erase cycles (EEPROM) and has a data retention of 10 years. The device is available in JEDEC approved 8-pin plastic DIP and SOIC packages.

Features:

• Ultralow Offset Voltage: 10 μV
• Ultralow Drift: ±0.1 μV/°C
• High Open-Loop Gain: 134 dB 
• High Common-Mode Rejection: 140 dB
• High Power Supply Rejection: 130 dB
• Low Bias Current: 1-nA maximum
• Wide Supply Range: ±2 V to ±18 V
• Low Quiescent Current: 800 μA/amplifier 
• Single, Dual, and Quad Versions

The XTR101 is a microcircuit, 4-20mA, two-wire transmitter containing a high accuracy instrumentation amplifier (IA), a voltage-controlled output current source, and dual-matched precision current reference. This combination is ideally suited for remote signal conditioning of a wide variety of transducers such as thermocouples, RTDs, thermistors, and strain gauge bridges. State-of-theart design and laser-trimming, wide temperature range operation, and small size make it very suitable for industrial process control applications. In addition, the optional external transistor allows even higher precision. The two-wire transmitter allows signal and power to be supplied on a single wire pair by modulating the power-supply current with the input signal source. The transmitter is immune to voltage drops from long runs and noise from motors, relays, actuators, switches, transformers, and industrial equipment. It can be used by OEMs producing transmitter modules or by data acquisition system manufacturers.

The XTR115 and XTR116 are precision current output converters designed to transmit analog 4-to-20mA signals over an industry standard current loop. They provide accurate current scaling and output current limit functions.

The PGA204 and PGA205 are low cost, general purpose programmable-gain instrumentation amplifiers offering excellent accuracy. Gains are digitally selected: PGA204—1, 10, 100, 1000, and PGA205—1, 2, 4, 8V/V. The precision and versatility, and low cost of the PGA204 and PGA205 make them ideal for a wide range of applications. Gain is selected by two TTL or CMOS-compatible address lines, A0 and A1. Internal input protection can withstand up to ±40V on the analog inputs without damage. The PGA204 and PGA205 are laser trimmed for very low offset voltage (50µV), drift (0.25µV/°C) and high common-mode rejection (115dB at G=1000). They operate with power supplies as low as ±4.5V, allowing use in battery operated systems. Quiescent current is 5mA. The PGA204 and PGA205 are available in 16-pin plastic DIP, and SOL-16 surface-mount packages, specified for the –40°C to +85°C temperature range.

The XTR106 is a low cost, monolithic 4-20mA, twowire current transmitter designed for bridge sensors. It provides complete bridge excitation (2.5V or 5V reference), instrumentation amplifier, sensor linearization, and current output circuitry. Current for powering additional external input circuitry is available from the VREG pin. The instrumentation amplifier can be used over a wide range of gain, accommodating a variety of input signal types and sensors. Total unadjusted error of the complete current transmitter, including the linearized bridge, is low enough to permit use without adjustment in many applications. The XTR106 operates on loop power supply voltages down to 7.5V. Linearization circuitry provides second-order correction to the transfer function by controlling bridge excitation voltage. It provides up to a 20:1 improvement in nonlinearity, even with low cost transducers. The XTR106 is available in 14-pin plastic DIP and SO-14 surface-mount packages and is specified for the –40°C to +85°C temperature range. Operation is from –55°C to +125°C.

The XTR110 is a precision voltage-to-current converter designed for analog signal transmission. It accepts inputs of 0 to 5V or 0 to 10V and can be connected for outputs of 4mA to 20mA, 0mA to 20mA, 5mA to 25mA, and many other commonly used ranges. A precision on-chip metal film resistor network provides input scaling and current offsetting. An internal 10V voltage reference can be used to drive external circuitry. The XTR110 is available in 16-pin plastic DIP, ceramic DIP and SOL-16 surface-mount packages. Commercial and industrial temperature range models are available.

The ADS1210 and ADS1211 are precision, wide dynamicrange, delta-sigma Analog-to-Digital (A/D) converters with24-bit resolution operating from a single +5V supply. Thedifferential inputs are ideal for direct connection to transduc-ers or low-level voltage signals. The delta-sigma architec-ture is used for wide dynamic range and to ensure 22 bitsof no-missing-code performance. An effective resolution of23 bits is achieved through the use of a very low-noise inputamplifier at conversion rates up to 10Hz. Effective resolu-tions of 20 bits can be maintained up to a sample rate of1kHz through the use of the unique Turbo modulator modeof operation. The dynamic range of the converters is furtherincreased by providing a low-noise programmable gainamplifier with a gain range of 1 to 16 in binary steps.The ADS1210 and ADS1211 are designed for high resolutionmeasurement applications in smart transmitters, industrialprocess control, weigh scales, chromatography, and portableinstrumentation. Both converters include a flexible synchro-nous serial interface that is SPI-compatible and also offers atwo-wire control mode for low cost isolation.The ADS1210 is a single-channel converter and is offered inboth 18-pin DIP and 18-lead SOIC packages. The ADS1211includes a 4-channel input multiplexer and is available in 24-pin DIP, 24-lead SOIC, and 28-lead SSOP packages

The ADS1212 and ADS1213 are precision, wide dynamicrange, delta-sigma Analog-to-Digital (A/D) converters with24-bit resolution operating from a single +5V supply. Thedifferential inputs are ideal for direct connection to transduc-ers or low-level voltage signals. The delta-sigma architec-ture is used for wide dynamic range and to ensure 22 bits ofno-missing-code performance. An effective resolution of 20bits is achieved through the use of a very low-noise inputamplifier at conversion rates up to 10Hz. Effective resolu-tions of 16 bits can be maintained up to a sample rate of1kHz through the use of the unique Turbo Modulator modeof operation. The dynamic range of the converters is furtherincreased by providing a low-noise programmable gainamplifier with a gain range of 1 to 16 in binary steps.The ADS1212 and ADS1213 are designed for high-resolutionmeasurement applications in smart transmitters, industrialprocess control, weigh scales, chromatography and portableinstrumentation. Both converters include a flexible synchro-nous serial interface that is SPI compatible and also offers atwo-wire control mode for low-cost isolation.The ADS1212 is a single channel converter and is offered inboth DIP-18 and SO-18 packages. The ADS1213 includes a4-channel input multiplexer and is available in DIP-24,SO-24, and SSOP-28 packages

The RCV420 is a precision current-loop receiver designed to convert a 4–20mA input signal into a 0–5V output signal. As a monolithic circuit, it offers high reliability at low cost. The circuit consists of a premium grade operational amplifier, an on-chip precision resistor network, and a precision 10V reference. The RCV420 features 0.1% overall conversion accuracy, 86dB CMR, and ±40V common-mode input range. The circuit introduces only a 1.5V drop at full scale, which is useful in loops containing extra instrument burdens or in intrinsically safe applications where transmitter compliance voltage is at a premium. The 10V reference provides a precise 10V output with a typical drift of 5ppm/°C. The RCV420 is completely self-contained and offers a highly versatile function. No adjustments are needed for gain, offset, or CMR. This provides three important advantages over discrete, board-level designs: 1) lower initial design cost, 2) lower manufacturing cost, and 3) easy, cost-effective field repair of a precision circuit.

The INA128 and INA129 (INA12x) are low-power, general-purpose instrumentation amplifiers that offer excellent accuracy. The versatile three op amp design and small size make these amplifiers an excellent choice for a wide range of applications. Current-feedback input circuitry provides wide bandwidth even at high gain (200 kHz at G = 100).

A single external resistor sets any gain from 1 to 10,000. The INA128 provides an industry-standard gain equation with a 50-kΩ resistor. The INA129 gain equation uses a 49.4-kΩ resistor to allow for drop-in replacements of comparable devices.

The INA12x are available in plastic DIP and surface-mount packages, specified for the –40°C to +85°C temperature range. The INA128 is also available in a dual configuration, the INA2128.

The upgraded INA828 offers a lower input bias current (0.6 nA, max) and lower noise (7 nV/√Hz) at the same quiescent current. See the Device Comparison Table for a selection of precision instrumentation amplifiers from Texas Instruments.

The INA125 is available in 16-pin plastic DIP and SO-16 surface-mount packages and is specified for the –40°C to +85°C industrial temperature range. At TA = +25°C, VS = ±15V, IA common = 0V, VREF common = 0V, and RL = 10kΩ, unless otherwise noted.

The LMD18200T is a motor controller and driver integrated circuit (IC) from Texas Instruments that can be used to drive DC and stepper motors. It's a 3A H-bridge that can handle peak output currents of up to 6A. 

The ISO100 is an optically-coupled isolation amplifier. High accuracy, linearity, and time-temperature stability are achieved by coupling light from an LED back to the input (negative feedback) as well as forward to the output. Optical components are carefully matched and the amplifier is actively laser-trimmed to assure excellent tracking and low offset errors. The circuit acts as a current-to-voltage converter with a minimum of 750V (2500V test) between input and output terminals. It also effectively breaks the galvanic connection between input and output commons as indicated by the ultra-low 60Hz leakage current of 0.3µA at 250V. Voltage input operation is easily achieved by using one external resistor. Versatility along with outstanding DC and AC performance provide excellent solutions to a variety of challenging isolation problems. For example, the ISO100 is capable of operating in many modes, including: noninverting (unipolar and bipolar) and inverting (unipolar and bipolar) configurations. Two precision current sources are provided to accomplish bipolar operation. Since these are not required for unipolar operation, they are available for external use (see Applications section). Designs using the ISO100 are easily accomplished with relatively few external components. Since VOUT of the ISO100 is simply IINRF, gains can be changed by altering one resistor value. In addition, the ISO100 has sufficient bandwidth (DC to 60kHz) to amplify most industrial and test equipment signals.

The XTR111 is a precision voltage-to-current converter designed for the standard 0mA–20mA or 4mA–20mA analog signals, and can source up to 36mA. The ratio between input voltage and output current is set by the single resistor RSET. The circuit can also be modified for voltage output. An external P-MOSFET transistor ensures high output resistance and a broad compliance voltage range that extends from 2V below the supply voltage, VVSP, to voltages well below GND. The adjustable 3V to 15V sub-regulator output provides the supply voltage for additional circuitry. The XTR111 is available in MSOP and DFN surface-mount packages.

The XTR105 is a monolithic 4-20mA, 2-wire current transmitter with two precision current sources. It provides complete current excitation for platinum RTD temperature sensors and bridges, instrumentation amplifiers, and current output circuitry on a single integrated circuit. Versatile linearization circuitry provides a 2nd-order correction to the RTD, typically achieving a 40:1 improvement in linearity. Instrumentation amplifier gain can be configured for a wide range of temperature or pressure measurements. Total unadjusted error of the complete current transmitter is low enough to permit use without adjustment in many applications. This includes zero output current drift, span drift, and nonlinearity. The XTR105 operates on loop power-supply voltages down to 7.5V. The XTR105 is available in DIP-14 and SO-14 surfacemount packages and is specified for the –40°C to +85°C industrial temperature range.