High Common-Mode Voltage,
Difference Amplifier
AD629
FUNCTIONAL BLOCK DIAGRAM Improved replacement for: INA117P and INA117KU
В±270 V common-mode voltage range
Input protection to
В±500 V common mode
В±500 V differential mode
Wide power supply range (В±2.5 V to В±18 V)
В±10 V output swing on В±12 V supply
1 mA maximum power supply current REF(–) 1
–IN 2
+IN 3
–VS 4 380kΩ 21.1kΩ
380kΩ
380kΩ 20kΩ AD629 8 NC 7 +VS 6 OUTPUT 5 REF(+)
00783-001 FEATURES NC = NO CONNECT Figure 1. GENERAL DESCRIPTION HIGH ACCURACY DC PERFORMANCE
3 ppm maximum gain nonlinearity (AD629B)
20 ОјV/В°C maximum offset drift (AD629A)
10 ОјV/В°C maximum offset drift (AD629B)
10 ppm/В°C maximum gain drift The AD629 is a difference amplifier with a very high input,
common-mode voltage range. It is a precision device that allows
the user to accurately measure differential signals in the …
