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) |
100 |
Features |
Cost Optimized |
CMRR (min) (dB) |
80 |
Input bias current (±) (max) (nA) |
0.01 |
Iq (typ) (mA) |
0.04 |
Bandwidth at min gain (typ) (MHz) |
0.5 |
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) |
20 |
TSSOP (PW)-14-32 mm² 5 x 6.4
All trademarks are the property of their respective owners.
The INA321 family is a series of rail-to-rail output, micropower CMOS instrumentation amplifiers that offer wide-range, single-supply, as well as bipolar-supply operation. The INA321 family provides low-cost, low-noise amplification of differential signals with micropower current consumption of 40µA. When shutdown, the INA321 has a quiescent current of less than 1µA. Returning to normal operations within nanoseconds, the shutdown feature makes the INA321 optimal for low-power battery or multiplexing applications.
Configured internally for 5V/V gain, the INA321 offers exceptional flexibility with user-programmable external gain resistors. The INA321 reduces common-mode error over frequency and with CMRR remaining high up to 3kHz, line noise and line harmonics are rejected.
The low-power design does not compromise on bandwidth or slew rate, making the INA321 ideal for driving sample Analog-to-Digital (A/D) converters as well as general-purpose applications. With high precision, low cost, and small packaging, the INA321 outperforms discrete designs, while offering reliability and performance.
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