Features
• 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
Applications
• Industrial Process Control: Transducer Isolator, Isolator for Thermocouples, RTDs, Pressure Bridges, and Flow Meters, 4-mA to 20-mA Loop Isolation
• Ground Loop Elimination
• Motor and SCR Control
• Power Monitoring
• PC-Based Data Acquisition
• Test Equipment
Description
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.
Feature
Small signal bandwidth is 50KHz
Input offset voltage is 20mV
100% tested for high voltage breakdown
Rated continuous isolation voltage of 1500Vrms
Bipolar operation of Vo = ±10V
High IMR of 140dB at 60Hz
Ease of use, fixed unity gain configuration
Operating temperature range -25°C to 85°C
Catalogue
FPGA / CPLD
Memory
MOS 
MCU 
DSP
OCEP
Secondary 
Other 
