TI ISO224ADWVR

The ISO224 is a precision isolation amplifier. The output and input circuits are separated by an isolation barrier with extremely strong anti-electromagnetic interference performance. This isolation barrier is certified to provide enhanced electrical isolation of up to 5 kV RMS, with an extremely long service life and low power dissipation. When used in conjunction with an isolated power supply, this device can isolate components in systems operating at different common-mode voltage levels and prevent damage to low-voltage components. The input of the ISO224 is specifically optimized for accurate detection of ±10 V signals, which are very common in industrial applications. This device operates with a high-side single power supply. This unique feature simplifies the design of the isolated power supply and reduces system cost. The integrated high-side power supply voltage detection function simplifies system-level diagnosis. The ±4 V output of the ISO224 can support the use of lower-cost analog-to-digital converters (ADCs). The differential structure of the output has stronger anti-noise performance. The ISO224 can operate normally in the extended industrial temperature range from -55 °C to +125 °C and is packaged in a wide-body 8-pin SOIC (DWV).

• Available in premium (ISO224B) and standard (ISO224A) versions
• 9kV ESD overvoltage input clamp
• ±4V differential output voltage range, common-mode voltage at VDD2/2
• Low DC error operation (ISO224B):
  • Input offset voltage: ±5mV at 25°C, ±15μV/°C (maximum)
  • Gain error: ±0.3% at 25°C, ±35ppm/°C (maximum)
  • Nonlinearity: ±0.01% (maximum), ±0.1ppm/°C (typical)
• 4.5V to 18V high-side single supply
• 4.5V to 5.5V low-side operation
• Safety-related certifications:
  • 7071V PEAK reinforced isolation per DIN VDE V 0884-11: 2017-01
  • 5000V RMS isolation per UL1577 for 1 minute
• High CMTI (ISO224B): 80kV/μs (typical)

• Grid automation
• Protection relays
• Factory automation and control
• Railway transportation
• Motor drives
• Power analyzers