AD8479TRZ-EP

The AD8479-EP is a difference amplifier with a very high input common-mode voltage (VCM) range. The AD8479-EP is a precision device that allows the user to accurately measure differential signals in the presence of high VCM up to ±600 V dc. The AD8479-EP can replace costly isolation amplifiers in applications that do not require galvanic isolation. The device operates over a ±600 V dc VCM range and has inputs that are protected from common-mode or differential mode transients up to ±600 V. The AD8479-EP has low offset voltage, low offset voltage drift, low gain drift, low common-mode rejection drift, and excellent common-mode rejection ratio (CMRR) over a wide frequency range. The AD8479-EP is available in a space-saving 8-lead SOIC package and is operational over the -55℃ to +125℃ temperature range.

Applications

• High voltage current sensing
• Motor controls
• Isolation

Key features

• ±600 V dc common-mode voltage range
• Rail-to-rail output
• Fixed gain of 1
• Wide power supply operating voltage range of ±2.58 to ±18 V
• 550 μA typical power supply current
• Excellent ac specifications 80 dB minimum CMRR 130 kHz small signal −3 dB bandwidth
• High accuracy dc performance 10 ppm maximum gain nonlinearity 15 μV/°C maximum offset voltage drift 5 ppm/°C maximum gain drift
• Controlled manufacturing baseline
• One assembly/test site
• One fabrication site
• Product change notification
• Qualification data available on request