1 Features
• Wide voltage ranges:
– Operational common-mode voltage: 4.3V to
110V
– Reverse protection voltage: Down to −85V
– Differential input voltage: Up to ±5V
• High precision in high common-mode voltage
systems:
– CMRR: 125dB (minimum) for G=1V/V, 2/3V/V
– Gain error drift: 2ppm/ºC (maximum)
– Gain error: ±0.025% (maximum) for G=1V/V,
2/3V/V, 1/2V/V
– Offset voltage drift: ±0.6μV/ºC (maximum) for
G=1V/V
– Offset voltage: ±900μV (maximum) for G=1V/V
• Four gain variants:
– A: G = 1V/V
– B: G = 2/3V/V
– C: G = 1/2V/V
– D: G = 1/4V/V
• Ultra-high input impedance (minimum of 1MΩ)
• Enable/Disable Function:
– Hi-Z output during disable
• Bandwidth: 620kHz (typical) for G = 1V/V
• Power supply range:
– Supply range: 2.7V (±1.35V) to 20V (±10V)
– Low quiescent current when enabled: 430μA
(IQ(VS+) typical), −460μA ((IQ(VS−)typical)
• Specified temperature range: –40°C to 125°C

2 Applications
• Battery cell formation and test equipment
• Analog input module
• Mixed module (AI, AO, DI, DO)
• Precision Multifunction Input Output DAQ

3 Description
The INA151 is a precision difference amplifier with
an input common-mode voltage range of up to 110V
above negative supply (recommended). The INA151
can accurately measure voltages in the presence
of high common-mode voltage with a high commonmode
rejection ratio of 125dB minimum and commonmode
input impedance of >1.4MΩ and an offset
voltage drift of 0.6μV/ºC for gain of 1V/V.
The INA151 is offered in gain options of 1V/V
(INA151A), 2/3V/V (INA151B), 1/2V/V (INA151C) and
1/4V/V ( INA151D).
The INA151 has an Enable/Disable (EN) pin that
provide a high-impedance output to allow stacking
multiple INA151 on the outputs. In many applications
this reduces the need for an input multiplexer.
The INA151 is offered in standard 8-pin packages
such as SOT-23.