Product details


Input range (Vp-p) ±10 Isolation working voltage VIOWM (rms) (V) 1500 Input offset (+/-) (Max) (mV) 50 Input offset drift (+/-) (Typ) (uV/C) 200 Gain error (+/-) (Max) (%) 0.5 Gain error drift (+/-) (Typ) (ppm/°C) 10 Gain non-linearity (+/-) (Max) (%) 0.01 Small signal bandwidth (Typ) (kHz) 50 Rating Catalog Operating temperature range (C) -25 to 85 open-in-new Find other Isolated amplifiers

Package | Pins | Size

PDIP (NVF) 8 188 mm² 20.005 x 9.4 SOIC (DVA) 8 185 mm² 17.9 x 10.33 open-in-new Find other Isolated amplifiers


  • 100% Tested for High-Voltage Breakdown
  • Rated 1500 Vrms
  • High IMR: 140 dB at 60 Hz
  • Maximum Nonlinearity: 0.010%
  • Bipolar Operation: VO = ±10 V
  • Packages: PDIP-16 and SOIC-28
  • Ease of Use: Fixed Unity Gain Configuration
  • Supply Range: ±4.5-V to ±18-V

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The ISO124 is a precision isolation amplifier incorporating a novel duty cycle modulation-demodulation 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.


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Technical documentation

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Type Title Date
* Datasheet ISO124 ±10-V Input, Precision Isolation Amplifier datasheet (Rev. E) Jun. 11, 2018
Technical article Get cerTIfied, not certi-FRIED! Electromagnetic compatibility testing explained (Part 4) Feb. 06, 2015
Technical article Using delta-sigma modulators for isolated high-voltage measurements Jan. 09, 2015
Technical article Part III: Get CerTIfied, not certi-FRIED! Electromagnetic compatibility testing explained Dec. 02, 2014
Application note Noise Sources In Applications Using Capacitive Coupled Isolated Amplifier Sep. 27, 2000
Application note Simple Output Filter Eliminates ISO Amp Output Ripple And Keeps Full Bandwidth Sep. 27, 2000

Design & development

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PSpice® for TI design and simulation tool
PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
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Reference designs

High-efficiency, low-emission, isolated DC/DC converter-based analog input module reference design
TIDA-010065 — This reference design is a simplified architecture for generating an isolated power supply for isolated amplifiers for measuring isolated voltages and currents. A fully integrated DC/DC converter with reinforced isolation operating from a 5-V input with configurable 5-V or 5.4-V output (headroom for (...)
document-generic Schematic document-generic User guide

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PDIP (NVF) 8 View options
SOIC (DVA) 8 View options

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