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ISO124

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±10-V input, precision voltage sensing low-cost isolated amplifier

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Data sheet

ISO124

ACTIVE
Data sheet Order now

Product details

Device type Voltage sensing Peak-to-peak input voltage range (V) 10 Working isolation voltage (VIOWM) (Vrms) 1500 Input offset (±) (max) (V) 0.05 Input offset drift (±) (typ) (µV/°C) 200 Rating Catalog Operating temperature range (°C) -25 to 85
Device type Voltage sensing Peak-to-peak input voltage range (V) 10 Working isolation voltage (VIOWM) (Vrms) 1500 Input offset (±) (max) (V) 0.05 Input offset drift (±) (typ) (µV/°C) 200 Rating Catalog Operating temperature range (°C) -25 to 85
PDIP (NVF) 8 188.047 mm² 20.005 x 9.4 SOIC (DVA) 8 184.907 mm² 17.9 x 10.33
  • 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
  • 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

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.

 

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
* Data sheet ISO124 ±10-V Input, Precision Isolation Amplifier datasheet (Rev. E) PDF | HTML 11 Jun 2018
Application brief Shunt-Widerstandsauswahl für isolierte Datenwandler PDF | HTML 15 Aug 2024
Application brief 절연 데이터 컨버터를 위한 션트 레지스터 선택 PDF | HTML 15 Aug 2024
White paper Vergleich isolierter Verstärker und isolierter Modulatoren (Rev. B) PDF | HTML 02 Jul 2024
White paper 절연 증폭기와 절연 모듈레이터 비교 (Rev. B) PDF | HTML 02 Jul 2024
Application brief Shunt Resistor Selection for Isolated Data Converters PDF | HTML 04 May 2023
White paper Comparing isolated amplifiers and isolated modulators (Rev. A) 28 Feb 2019
Application note Noise Sources In Applications Using Capacitive Coupled Isolated Amplifier 27 Sep 2000
Application note Simple Output Filter Eliminates ISO Amp Output Ripple And Keeps Full Bandwidth 27 Sep 2000

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Reference designs

TIDA-010065 — High-efficiency, low-emission, isolated DC/DC converter-based analog input module reference design

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 (...)
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Schematic: PDF
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SOIC (DVA) 8 Ultra Librarian
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