AEC-Q100, -4 to 80V, bi-directional, ultra-precise current sense amplifier w/ enhanced pwm rejection
Product details
Parameters
Package | Pins | Size
Features
- AEC-Q100 Qualified for Automotive Applications
- Temperature Grade 1: –40°C to +125°C Ambient Operating Temperature Range
- Temperature Grade 0: –40°C to +150°C Ambient Operating Temperature Range
- HBM ESD Classification Level H2
- CDM ESD Classification Level C5
- Functional Safety-Capable
- Enhanced PWM Rejection
- Excellent CMRR:
- 132-dB DC CMRR
- 93-dB AC CMRR at 50 kHz
- Wide Common-Mode Range: –4 V to 80 V
- Accuracy:
- Gain Error: 0.20% (Maximum) With 2.5 ppm/°C (Maximum Drift)
- Offset Voltage: ±25 µV (Maximum) With 250 nV/°C (Maximum Drift)
- Available Gains:
- INA240A1-Q1: 20 V/V
- INA240A2-Q1: 50 V/V
- INA240A3-Q1: 100 V/V
- INA240A4-Q1: 200 V/V
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Description
The INA240-Q1 device is an automotive-qualified, voltage-output, current-sense amplifier with enhanced PWM rejection that can sense drops across shunt resistors over a wide common-mode voltage range from –4 V to 80 V, independent of the supply voltage. The negative common-mode voltage allows the device to operate below ground, accommodating the flyback period of typical solenoid applications. Enhanced PWM rejection provides high levels of suppression for large common-mode transients (ΔV/Δt) in systems that use pulse width modulation (PWM) signals (such as motor drives and solenoid control systems). This feature allows for accurate current measurements without large transients and associated recovery ripple on the output voltage.
This device operates from a single 2.7-V to 5.5-V power supply, drawing a maximum of 2.4 mA of supply current. Four fixed gains are available: 20 V/V, 50 V/V, 100 V/V, and 200 V/V. The low offset of the zero-drift architecture enables current sensing with maximum drops across the shunt as low as 10-mV full-scale. Grade 1 versions are specified over the extended operating temperature range (–40°C to +125°C) and are offered in an 8-pin TSSOP and 8-pin SOIC packages. Grade 0 versions are specified over the extended operating temperature range (–40°C to +150°C) and are offered in an 8-pin SOIC 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
Evaluate the performance of the INA240 current sense amplifier with the INA240 evaluation module. The INA240EVM package includes one large PCB that can be broken apart into four separate PCBs, one for each of the four gain versions (INA240A1/A2/A3/A4).
The EVM includes test points for external (...)
Features
- Simple access to all device pins
- Multiple input signal options
- Space for optional input filtering
- Configurable reference pins
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
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download TIDA-01421 Assembly Drawing.pdf (113KB) -
download TIDA-01421 PCB.pdf (624KB) -
download TIDA-01421 Gerber.zip (356KB) -
download TIDA-01421 BOM (Rev. A).pdf (67KB) -
download TIDA-01421 CAD Files (Rev. A).zip (619KB)
Design files
-
download TIDA-03050 BOM.pdf (53KB) -
download TIDA-03050 Assembly Drawing.pdf (103KB) -
download TIDA-03050 PCB.pdf (511KB) -
download TIDA-03050 CAD Files.zip (476KB) -
download TIDA-03050 Gerber.zip (419KB)
Design files
-
download TIDA-01506 BOM.pdf (52KB) -
download TIDA-01506 Assembly Drawing.pdf (79KB) -
download TIDA-01506 PCB.pdf (348KB) -
download TIDA-01506 CAD Files.zip (448KB) -
download TIDA-01506 Gerber.zip (335KB)
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 |
---|---|---|
SOIC (D) | 8 | View options |
TSSOP (PW) | 8 | 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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