0
ACTIVE
Product type |
Analog output |
Common-mode voltage (max) (V) |
60 |
Common-mode voltage (min) (V) |
2.7 |
Input offset (±) (max) (µV) |
1000 |
Input offset drift (±) (typ) (µV/°C) |
1 |
Features |
Current Output |
Rating |
Automotive |
Voltage gain (V/V) |
adjustable |
CMRR (min) (dB) |
100 |
Bandwidth (kHz) |
32 |
Supply voltage (max) (V) |
60 |
Supply voltage (min) (V) |
2.7 |
Iq (max) (mA) |
0.06 |
Number of channels |
1 |
Comparators (#) |
0 |
Gain error (%) |
2 |
Gain error drift (±) (max) (ppm/°C) |
150 |
Operating temperature range (°C) |
-40 to 125 |
SOT-23 (DBV)-5-8.12 mm² 2.9 x 2.8
The INA138-Q1 and INA168-Q1 (INA1x8-Q1) devices are high-side, unidirectional, current sense amplifiers. Wide input common-mode voltage range, low quiescent current, and TSSOP and SOT-23 packaging enable use in a variety of applications.
Input common-mode and power-supply voltages are independent, and range from 2.7 V to 36 V for the INA138-Q1, and 2.7 V to 60 V for the INA168-Q1. Quiescent current is only 25 µA, which permits connecting the power supply to either side of the current-measurement shunt with minimal error.
The device converts a differential input voltage to a current output. This current is converted back to a voltage with an external load resistor that sets any gain from 1 to over 100. Although designed for current shunt measurement, the circuit invites creative applications in measurement and level shifting.
Both devices are available in a TSSOP-8 package. The INA168-Q1 is also available in a SOT-23-5 package. Both devices are specified for the –40°C to +125°C temperature range.
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