Gehäuseinformationen
| Gehäuse | Pins SOT-SC70 (DCK) | 6 |
| Betriebstemperaturbereich (°C) -40 to 125 |
| Gehäusemenge | Träger 3.000 | LARGE T&R |
Merkmale von INA190-Q1
- AEC-Q100 qualified for automotive applications:
- Temperature grade 1: –40°C to +125°C, TA
- Functional Safety-Capable
- Low input bias currents: 500 pA (typical) (enables microamp current measurement)
- Low power:
- Low supply voltage, VS: 1.7 V to 5.5 V
- Low shutdown current: 100 nA (maximum)
- Low quiescent current: 50 µA at 25°C (typical)
- Accuracy:
- Common-mode rejection ratio: 132 dB (minimum)
- Gain error: ±0.2% (A1 device)
- Gain drift: 7 ppm/°C (maximum)
- Offset voltage, VOS: ±15 µV (maximum)
- Offset drift: 80 nV/°C (maximum)
- Wide common-mode voltage: –0.2 V to +40 V with survivability up to 42 V
- Bidirectional current sensing capability
- Gain options:
- INA190A1-Q1: 25 V/V
- INA190A2-Q1: 50 V/V
- INA190A3-Q1: 100 V/V
- INA190A4-Q1: 200 V/V
- INA190A5-Q1: 500 V/V
Beschreibung von INA190-Q1
The INA190-Q1 is an automotive, low-power, voltage-output, current-shunt monitor (also called a current-sense amplifier). This device is commonly used for monitoring systems directly connected to an automotive 12-V battery. The INA190-Q1 can sense drops across shunts at common-mode voltages from –0.2 V to +40 V, independent of the supply voltage. In addition, the input pins have an absolute maximum voltage of 42 V.
The low input bias current of the device permits the use of larger current-sense resistors, thus providing accurate current measurements in the microamp range. The low offset voltage of the zero-drift architecture extends the dynamic range of the current measurement. This feature allows for smaller sense resistors with lower power loss, while still providing accurate current measurements.
The INA190-Q1 operates from a single 1.7-V to 5.5-V power supply, and draws a maximum of 65 µA of supply current when enabled; only 0.1 µA when disabled. Five fixed gain options are available: 25 V/V, 50 V/V, 100 V/V, 200 V/V, or 500 V/V. The device is specified over the operating temperature range of –40°C to +125°C, and offered in SC70 and SOT-23 packages.