1 Features

1• Eliminates Errors from External Resistors at Gain

of 5

• Common-Mode Range Goes Below

Negative Supply

• Input Protection: Up to ±40 V

• Rail-to-Rail Output

• Outstanding Precision:

– Common-Mode Rejection: 88 dB, minimum

– Low Offset Voltage: 150 μV, maximum

– Low Drift: 2.5 μV/°C, maximum

– Low Gain Drift: 1 ppm/°C, max (G = 5 V/V)

– Power-Supply Rejection:

100 dB, min (G = 5)

– Noise: 17 nV/√Hz, G = 1000 V/V

• High Bandwidth:

– G = 5: 600 kHz

– G = 100: 150 kHz

• Supply Current: 200 μA, typical

• Supply Range:

– Single Supply: 3 V to 36 V

– Dual Supply: ±1.5 V to ±18 V

• Specified Temperature Range:

–40°C to +125°C

• Package: 8-pin VSSOP

2 Applications

• Industrial Process Controls

• Multichannel Systems

• Power Automation

• Weigh Scales

• Medical Instrumentation

• Data Acquisition

3 Description

The INA827 is a low-cost instrumentation amplifier

(INA) that offers extremely low power consumption

and operates over a very wide single- or dual-supply

range. The device is optimized for the lowest possible

gain drift of only 1 ppm per degree Celsius in G = 5,

which requires no external resistor. However, a single

external resistor sets any gain from 5 to 1000.

The INA827 is optimized to provide excellent

common-mode rejection ratio (CMRR) of over 88 dB

(G = 5) over frequencies up to 5 kHz. In G = 5,

CMRR exceeds 88 dB across the full input commonmode

range from the negative supply all the way up

to 1 V of the positive supply. Using a rail-to-rail

output, the INA827 is well-suited for low-voltage

operation from a 3-V singlesupply as well as dual

supplies up to ±18 V. Additional circuitry protects the

inputs against overvoltage of up to ±40 V beyond the

power supplies by limiting the input currents to a save

level.

The INA827 is available in a small VSSOP-8 package

and is specified for the –40°C to +125°C temperature

range. For a similar instrumentation amplifier with a

gain range of 1 V/V to 1000 V/V, see the INA826.