AEC-Q100, 80V, bi-directional, precision current sense amp w/pwm rejection & int. shunt resistor
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
- Precision integrated shunt resistor
- Shunt resistor: 2 mΩ
- Shunt inductance: 3 nH
- Shunt resistor tolerance: 0.1% (maximum)
- ±15 A continuous from –40 °C to +85 °C
- 0 °C to 125 °C temperature coefficient: 10 ppm/°C
- High bandwidth: 350 kHz
- Enhanced PWM rejection
- Excellent CMRR
- > 120-dB DC CMRR
- 90-dB AC CMRR at 50 kHz
- Accuracy:
- Gain:
- Gain error: 0.4% (maximum)
- Gain drift: 45 ppm/°C (maximum)
- Offset:
- Offset current: ±15 mA (maximum)
- Offset drift: 125 µA/°C (maximum)
- Gain:
- Wide common-mode range: –4 V to +80 V
- Available gains: 100 mV/A, 200 mV/A, and 400 mV/A
- Quiescent current: 2.4 mA (maximum)
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Description
The INA253-Q1 is an automotive, voltage-output, current sense amplifier with an integrated shunt resistor of 2 mΩ. The INA253-Q1 monitors bidirectional currents over a wide common-mode range from –4 V to +80 V, independent of the supply voltage. Three fixed gains are available: 100 mV/A, 200 mV/A, and 400 mV/A. The integration of the precision resistor with a zero-drift chopped amplifier provides calibration-equivalent measurement accuracy, ultra-low temperature-drift performance of 15 ppm/ °C, and an optimized Kelvin layout for the sensing resistor.
The INA253-Q1 is designed with enhanced PWM rejection circuitry to suppress large (dv/dt) signals that enable real-time continuous current measurements. The measurements are critical for in-line current measurements in a motor-drive application, and for solenoid valve-control applications.
This device operates from a single 2.7-V to 5.5-V power supply, drawing a maximum of 3 mA of supply current. All gain versions are specified over the operating temperature range of –40 °C to +125 °C, and are available in a 20-pin TSSOP package.
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
- All INA253 gain versions are included
- Easy access to all pins
- Place holders on the PCB for configurations other than default
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
Design files
-
download TIDA-020023 BOM.pdf (93KB) -
download TIDA-020023 Assembly Drawing.pdf (83KB) -
download TIDA-020023 PCB.pdf (345KB) -
download TIDA-020023 CAD Files.zip (2464KB) -
download TIDA-020023 Gerber.zip (198KB)
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 |
---|---|---|
TSSOP (PW) | 20 | 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
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