AEC-Q100, -4-V to 110-V, 1.3-MHz, ultra-precise current sense amplifier
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:
- Operational voltage: −4 V to +110 V
- Survival voltage: −20 V to +120 V
- Excellent CMRR:
- 160-dB DC-CMRR
- 85-dB AC-CMRR at 50 kHz
- Accuracy:
- Gain:
- Gain error: ±0.15% (maximum)
- Gain drift: ±10 ppm/ °C (maximum)
- Offset:
- Offset voltage: ±15 µV (typical)
- Offset drift: ±0.05 µV/ °C (typical)
- Gain:
- Available gains:
- INA293A1-Q1, INA293B1-Q1 : 20 V/V
- INA293A2-Q1, INA293B2-Q1 : 50 V/V
- INA293A3-Q1, INA293B3-Q1 : 100 V/V
- INA293A4-Q1, INA293B4-Q1 : 200 V/V
- INA293A5-Q1, INA293B5-Q1 : 500 V/V
- High bandwidth: 1.3 MHz
- Slew rate: 2.5 V/µs
- Quiescent current: 1.5 mA
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Description
The INA293-Q1 is a ultra-precise current sense amplifier that can measure voltage drops across shunt resistors over a wide common-mode range from –4 V to 110 V. The negative common-mode voltage allows the device to operate below ground, thus accommodating precise measurement of recirculating currents in half-bridge applications. The combination of a low offset voltage, small gain error and high DC CMRR enables highly accurate current measurement. The INA293-Q1 is not only designed for DC current measurement, but also for high-speed applications (ex. Fast over-current protection) with a high bandwidth of 1.3 MHz and an 85-dB AC CMRR (at 50 kHz).
The INA293-Q1 operates from a single 2.7-V to 20-V supply, drawing 1.5 mA of supply current. The INA293-Q1 is available with five gain options: 20 V/V, 50 V/V, 100 V/V, 200 V/V, and 500 V/V. These gain options address wide dynamic range current-sensing applications.
The INA293-Q1 is specified over an operating temperature range of −40 °C to +125 °C and is offered in a space-saving SOT-23 package with two pin-out variants.
Technical documentation
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
Description
This is a small module with 10 completely independent boards that can be broken off by the user. Ten schematically identical boards for each of the five gain variation and two pinout variations of the INA293 with inputs up to 110V common mode and 5A (on board shunt) input capability. Each board (...)
Features
- Easy to test INA293 with differential voltage or shunt resistor.
- Pads and sockets allow quick and easy implementation of SMD filtering.
- Breakable panels lets customer experiment and test with all gain variants and two pin outs.
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 |
---|---|---|
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
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