AEC-Q100, 40V, bi-directional, high-precision current sense amplifier w/ picoamp IB & ENABLE
Product details
Parameters
Package | Pins | Size
Features
- AEC-Q100 qualified for automotive applications:
- Temperature grade 1: –40°C to +125°C, TA
- Functional Safety-Capable
- Wide common-mode voltage range, VCM:
–0.2 V to +40 V with survivability up to 42 V (recommended for automotive 12-V battery applications) - Low input bias currents, IIB: 500 pA (typical)
- Low power:
- Low supply voltage, VS: 1.7 V to 5.5 V
- Low quiescent current, IQ: 48 µA (typical)
- Accuracy:
- Common-mode rejection ratio: 120 dB (minimum)
- Gain error, EG: ±1% (maximum)
- Gain drift: 10 ppm/°C (maximum)
- Offset voltage, VOS: ±50 µV (maximum)
- Offset drift: 0.5 µV/°C (maximum)
- Bidirectional current sensing capability
- Gain options:
- INA186A1-Q1: 25 V/V
- INA186A2-Q1: 50 V/V
- INA186A3-Q1: 100 V/V
- INA186A4-Q1: 200 V/V
- INA186A5-Q1: 500 V/V
All trademarks are the property of their respective owners.
Description
The INA186-Q1 is an automotive, low-power, voltage-output, current-sense amplifier (also called a current-shunt monitor). This device is commonly used for monitoring systems directly connected to an automotive 12-V battery. The INA186-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 42V.
The low input bias current of the INA186-Q1 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 INA186-Q1 operates from a single 1.7-V to 5.5-V power supply, and draws a maximum of 90 µA of supply current. 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. The SC70 package supports bidirectional current measurement, whereas the SOT-23 (DBV) only supports current measurement in one direction.
Technical documentation
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
Description
Features
- Easy to test INA186 with differential voltage or shunt resistor.
- Pads and sockets allow quick and easy implementation of SMD or TH filtering and input protection.
- Breakable panels allow experimenting and testing with all gain variants.
Design tools & simulation
Features
- Leverages Cadence PSpice Technology
- Preinstalled library with a suite of digital models to enable worst-case timing analysis
- Dynamic updates ensure you have access to most current device models
- Optimized for simulation speed without loss of accuracy
- Supports simultaneous analysis of multiple products
- (...)
Reference designs
Additionally, an external protection circuit is implemented to provide surge and fast-transient protection and demonstrate the different immunity levels to (...)
Design files
-
download TIDA-00302 BOM.pdf (52KB)
CAD/CAE symbols
Package | Pins | Download |
---|---|---|
SC70 (DCK) | 6 | View options |
SOT-23 (DBV) | 5 | View options |
Ordering & quality
- RoHS
- REACH
- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
Support & training
TI E2E™ forums with technical support from TI engineers
Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.
If you have questions about quality, packaging or ordering TI products, see TI support.