Model No: INA240A1QDRQ1
Texas Instruments INA240A1QDRQ1
Manufacturer: Texas Instruments
SEMICON NO.: INA240A1QDRQ1
Package: 8-SOIC
Stock: In stock
Description: IC Current Sense Amplifier 1 Circuit
SEMICON NO.: INA240A1QDRQ1
Package: 8-SOIC
Stock: In stock
Description: IC Current Sense Amplifier 1 Circuit
Quantity :
| Mfr | Texas Instruments |
| Device Type | Current-Sense Amplifier |
| Amplifier Type | Current Sense |
| Number of Channels | 1 |
| Fixed Gain (A1 Option) | 20 V/V |
| Architecture | Zero-Drift (Chopper) |
| Common-Mode Voltage | –4 V to +80 V |
| Input Offset Voltage | ±5 µV (Typical) / ±25 µV (Max) |
| Input Offset Voltage Drift | ±250 nV/°C (Max) |
| Input Bias Current | 90 µA |
| Differential Input Voltage | ±80 V |
| Common-Mode Rejection Ratio (CMRR) | 132 dB (Typ) / 120 dB (Min) |
| -3dB Bandwidth | 400 kHz |
| Supply Voltage | 2.7 V to 5.5 V |
| Operating Temperature | –40°C to +125° |
| Package | 8-SOIC |
| Mounting Type | Surface Mount |
| Compliance | RoHS Compliant |
The INA240A1QDRQ1 is an AEC-Q100 qualified automotive-grade bidirectional high-precision current sense amplifier from Texas Instruments, housed in an 8-pin SOIC SMD package. It supports -4V to 80V wide common-mode input voltage range, features fixed 20V/V gain, and delivers industry-leading enhanced PWM rejection performance, making it a robust, high-accuracy solution for current monitoring in harsh automotive motor drive and power conversion systems.
This automotive-qualified high-precision current sense amplifier is optimized for high-stress motor drive and power system current monitoring tasks. Its primary applications include:
● Automotive BLDC Motor Drives: Implements high-accuracy phase current sensing for electric power steering, electronic brake booster, and traction motor control systems.
● 48V Mild Hybrid Systems: Deploys in 48V BMS current monitoring, integrated starter generator (ISG) current measurement, and 48V to 12V DC-DC converter overcurrent protection circuits.
● Automotive Powertrain Protection: Serves as the core current monitoring element for high-side battery current sensing, preventing overcurrent damage to power semiconductors and wiring harnesses.
● Industrial High-Power Motor Drives: Used in 80V industrial servo drives, high-power brushless motor controllers, and renewable energy power conversion systems that demand high common-mode voltage tolerance.
Frequently Asked Questions (FAQ)
Q: Can this device measure bidirectional current flow?
A: Yes, it natively supports bidirectional current sensing, accurately measuring both sourcing and sinking current through the shunt resistor without additional circuit modifications.
Compatible Alternative current shunt amplifier List
● INA240A2QDRQ1: The 50V/V fixed gain automotive variant of the INA240, offering higher gain for low-value shunt resistor high-sensitivity current measurement scenarios.
● AD8206WBRMZ: An Analog Devices automotive-grade current sense amplifier, serving as a fully pin-compatible cross-vendor second-source alternative with equivalent 80V common-mode rating.
● INA241A1QDRQ1: TI's enhanced high-voltage variant, supporting -5V to 110V common-mode input for 80V high-voltage automotive and industrial system applications.
● MAX4080ASA-T: A Maxim high-precision current sense amplifier, featuring unidirectional dedicated high-side sensing for low-cost automotive battery monitoring system designs.
● Automotive BLDC Motor Drives: Implements high-accuracy phase current sensing for electric power steering, electronic brake booster, and traction motor control systems.
● 48V Mild Hybrid Systems: Deploys in 48V BMS current monitoring, integrated starter generator (ISG) current measurement, and 48V to 12V DC-DC converter overcurrent protection circuits.
● Automotive Powertrain Protection: Serves as the core current monitoring element for high-side battery current sensing, preventing overcurrent damage to power semiconductors and wiring harnesses.
● Industrial High-Power Motor Drives: Used in 80V industrial servo drives, high-power brushless motor controllers, and renewable energy power conversion systems that demand high common-mode voltage tolerance.
Frequently Asked Questions (FAQ)
Q: Can this device measure bidirectional current flow?
A: Yes, it natively supports bidirectional current sensing, accurately measuring both sourcing and sinking current through the shunt resistor without additional circuit modifications.
Compatible Alternative current shunt amplifier List
● INA240A2QDRQ1: The 50V/V fixed gain automotive variant of the INA240, offering higher gain for low-value shunt resistor high-sensitivity current measurement scenarios.
● AD8206WBRMZ: An Analog Devices automotive-grade current sense amplifier, serving as a fully pin-compatible cross-vendor second-source alternative with equivalent 80V common-mode rating.
● INA241A1QDRQ1: TI's enhanced high-voltage variant, supporting -5V to 110V common-mode input for 80V high-voltage automotive and industrial system applications.
● MAX4080ASA-T: A Maxim high-precision current sense amplifier, featuring unidirectional dedicated high-side sensing for low-cost automotive battery monitoring system designs.
