0
ACTIVE
Number of channels |
2 |
Vs (max) (V) |
5.5 |
Vs (min) (V) |
2.5 |
Input offset (±) (max) (µV) |
1000 |
Voltage gain (min) (V/V) |
5 |
Voltage gain (max) (V/V) |
1000 |
Noise at 1 kHz (typ) (nV√Hz) |
46 |
Features |
Cost Optimized, Shutdown |
CMRR (min) (dB) |
80 |
Input bias current (±) (max) (nA) |
0.01 |
Iq (typ) (mA) |
0.415 |
Bandwidth at min gain (typ) (MHz) |
2 |
Gain error (±) (max) (%) |
0.1 |
Operating temperature range (°C) |
-55 to 125 |
Rating |
Catalog |
Type |
Resistor |
Gain nonlinearity (±) (max) (%) |
0.01 |
Output swing headroom (to negative supply) (typ) (V) |
0.025 |
Output swing headroom (to positive supply) (typ) (V) |
-0.025 |
Input common mode headroom (to negative supply) (typ) (V) |
0.55 |
Input common mode headroom (to positive supply) (typ) (V) |
-1.7 |
Noise at 0.1 Hz to 10 Hz (typ) (µVPP) |
7 |
TSSOP (PW)-14-32 mm² 5 x 6.4
All trademarks are the property of their respective owners.
The INA331 and INA2331 are rail-to-rail output, low-power CMOS instrumentation amplifiers that offer wide range, single-supply operation as well as bipolar-supply operation. The INA331 family provides low-cost, low-noise amplification of differential signals with a low quiescent current of 415µA (dropping to 0.01µA when shutdown). Returning to normal operation within microseconds, this INA can be used for battery or multi-channel applications.
Configured internally in a gain of 5V/V, the INA331 offers flexibility in higher gains by choosing external resistors.
The INA331 rejects line noise and its harmonics, because common-mode error remains low even at higher frequencies.
High bandwidth and slew rate makes the INA331 ideal for directly driving sampling Analog-to-Digital (A/D) converters as well as general-purpose applications.
With high precision, low cost, and small packages, the INA331 outperforms discrete designs. They are specified for a wide temperature range of -55°C to +125°C.
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