ISO122 ±10 V-Input Isolated Amplifier | TI.com

ISO122
This product has been released to the market and is available for purchase. For some products, newer alternatives may be available.
±10 V-Input Isolated Amplifier

 

Recommended alternative parts

  • ISO124  -  0.01% Gain error non-linearity compared to 0.02%
  • ISO721  -  Digital isolation amplifier instead of analog.
  • ISO224  -  Next generation ±12V reinforced isolated amplifier

Description

The ISO122 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 ISO122 is easy to use. No external components are required for operation. The key specifications are 0.020% maximum nonlinearity, 50-kHz signal bandwidth, and 200-V/°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 ISO122 ideal for a wide range of applications.

The ISO122 is available in 16-pin plastic DIP and 28-lead plastic surface-mount packages.

Features

  • 100% Tested for High-Voltage Breakdown
  • Rated 1500 Vrms
  • High IMR: 140 dB at 60 Hz
  • Bipolar Operation: VO = ±10 V
  • 16-Pin Plastic DIP and 28-Lead SOIC
  • Ease of Use: Fixed Unity Gain Configuration
  • 0.020% Maximum Nonlinearity
  • ±4.5-V to ±18-V Supply Range

Parametrics

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Part number Order Input range (Vp-p) Isolation working voltage VIOWM (rms) (V) Isolation transient overvoltage VIOTM (peak) (V) CMTI (Min) (kV/µs) Input offset (+/-) (Max) (mV) Input offset drift (+/-) (Typ) (uV/C) Gain error (+/-) (Max) (%) Gain error drift (+/-) (Typ) (ppm/°C) Gain non-linearity (+/-) (Max) (%) Small signal bandwidth (Typ) (kHz) Rating Operating temperature range (C) Leakage current at 240 V/60 Hz (Max) (uArms)
ISO122 Order now ±10     1500         50     200     0.5     10     0.02     50     Catalog     -25 to 85     0.5    
ISO124 Samples not available ±10     1500         50     200     0.5     10     0.01     50     Catalog     -25 to 85     0.5    
ISO224 Order now ±12     1500     7000     15
55    
50
5    
12
3    
1
0.3    
20
10    
0.02
0.01    
185
275    
Catalog     -55 to 125