The INA139-Q1 and INA169-Q1 (INA1x9-Q1) are high-side, unidirectional, current shunt monitors. Wide input common-mode voltage range, high-speed, low quiescent current, and TSSOP-8 packaging enable use in a variety of applications.
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 the INA139-Q1 and INA169-Q1 are available in a TSSOP-8 package, and are specified for the –40°C to +125°C temperature range.
| Product type | Analog output |
| Common-mode voltage (max) (V) | 36 |
| Common-mode voltage (min) (V) | 2.7 |
| Input offset (±) (max) (µV) | 1000 |
| Input offset drift (±) (typ) (µV/°C) | 1 |
| Voltage gain (V/V) | adjustable |
| CMRR (min) (dB) | 100 |
| Bandwidth (kHz) | 220 |
| Supply voltage (max) (V) | 40 |
| Supply voltage (min) (V) | 2.7 |
| Iq (max) (mA) | 0.125 |
| Number of channels | 1 |
| Comparators (#) | 0 |
| Gain error (%) | 2 |
| Gain error drift (±) (max) (ppm/°C) | 100 |
| Features | Current Output |
| Rating | Automotive |
| Operating temperature range (°C) | -40 to 125 |
| TSSOP (PW) | 8 | 19.2 mm² 3 x 6.4 |
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