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AD711JRZ

BiFET Precision Op Amp, 20V/us SR, 1us 0.01% Settling, SOIC-8, NRND

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Manufacturer Part：

AD711JRZ

Package：

SOIC-8 (5.0 x 3.9 x 1.5 mm)

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Description

Product Overview

The AD711JRZ from Analog Devices is a precision BiFET operational amplifier with 16 V/us slew rate, 1 us settling time to 0.01%, and 300 uV max offset voltage in an SOIC-8 package. Not recommended for new designs.

Key Specifications

Type Precision High-Speed BiFET Op Amp
Amplifier Type JFET Input
Slew Rate 20 V/us (typical)
Settling Time 1.0 us to +/-0.01%
Unity Gain Bandwidth 4 MHz (typical)
Input Offset Voltage 300 uV (max, J grade)
Input Bias Current 15 pA (typical)
Open-Loop Gain 400 V/mV (typical)
CMRR 88 dB (typical)
Supply Voltage +/-4.5 V to +/-18 V
Package SOIC-8
Operating Temperature 0C to +70C (J grade)

Features

  • Enhanced replacement for LF411 and TL081
  • 1 us settling to +/-0.01% (12-bit precision)
  • 16 V/us minimum slew rate
  • Ultra-low 15 pA input bias current
  • 4 uV p-p noise (0.1 Hz to 10 Hz)
  • Laser-trimmed offset voltage

Applications

  • 12-bit DAC/ADC buffer amplifiers
  • Active filter and integrator circuits
  • Photodiode transimpedance amplifiers
  • Precision instrumentation front-ends

The AD711JRZ from Analog Devices is a precision high-speed BiFET operational amplifier combining DC precision with fast settling time. The laser-trimmed input offset voltage of 300 uV maximum (J grade) and ultra-low 15 pA input bias current make it suitable for high-impedance sensor interfaces. The 1 us settling time to +/-0.01% (12-bit accuracy) and 20 V/us slew rate enable use as a DAC/ADC buffer in data acquisition systems. The AD711 is an enhanced replacement for the LF411 and TL081, offering superior precision and dynamic performance. Note: This product is not recommended for new designs; the ADA4610-1 is the recommended replacement.

The AD711JRZ uses a BiFET (Bipolar + JFET) process combining ion-implanted JFET input transistors with bipolar output and gain stages. The JFET input pair provides ultra-low input bias current (15 pA typical) and high input impedance, making it ideal for high-source-impedance applications. The input offset voltage is laser-trimmed at wafer level to 300 uV maximum. The bipolar second stage and output stage provide high slew rate (20 V/us) and fast settling (1 us to 0.01%). The output stage uses a class AB push-pull configuration capable of driving 600 Ohm loads. The internal compensation capacitor ensures stability in unity-gain configurations while maintaining fast settling. The 4 MHz bandwidth and 88 dB CMRR make it suitable for precision active filter applications.

Pin Name Type Function
1 OFFSET NULL1 Input Offset voltage trim
2 IN- Input Inverting input
3 IN+ Input Non-inverting input
4 VS- Power Negative supply (-4.5 to -18V)
5 OFFSET NULL2 Input Offset voltage trim
6 OUTPUT Output Amplifier output
7 VS+ Power Positive supply (+4.5 to +18V)
8 NC – No connect
  • 12-bit DAC output buffer requiring 1us 0.01% settling
  • Photodiode transimpedance amplifier with pA-level bias current
  • Precision active Butterworth filter for signal conditioning
  • High-impedance pH electrode buffer amplifier
Manufacturer Part Number Package Notes
ADI ADA4610-1ARZ SOIC-8 Recommended replacement, RR output
ADI ADA4000-1ARZ SOIC-8 Low-cost JFET replacement
TI LF411ACN/NOPB PDIP-8 Original LF411, lower specs
TI TL081CP PDIP-8 Original TL081, lower specs
ADI AD712JRZ SOIC-8 Dual version of AD711
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