Texas Instruments INA299-Q1 Current Sense Amplifiers
Texas Instruments INA299-Q1 Current Sense Amplifiers are precise, bidirectional devices that can measure voltage drops across shunt resistors over a wide common-mode range from -2V to 80V. These amplifiers are AEC-Q100, 650kHz, high-precision current sense amplifiers. The INA299-Q1 amplifiers operate from a single 2.7V to 12V supply voltage, drawing 650µA of supply current. These amplifiers are available in three gain options: 20V/V, 50V/V, and 100V/V. The INA299-Q1 amplifiers are specified to operate over an operating temperature range of -40°C to 125°C and are offered in a 6-pin SOT-23 package. The INA299-Q1 devices are AEC-Q100 qualified for automotive applications. These amplifiers are ideal for eTurbo/charger, Electric Power Steering (EPS), starter/generator, regenerative braking, and brake system.
Features
- AEC-Q100 qualified for automotive applications with -40°C to 125°C, TA temperature grade 1
- Functional safety-capable documentation is available to aid in functional safety system design
- Wide common-mode voltage:
- -2V to 80V operational voltage range
- -12V to 85V survival voltage range
- Bidirectional operation
- 650kHz (20V/V gain) high small signal bandwidth
- 2.5V/µs slew rate
- 6.5µs step response settling time to 1%
- 120dB high CMRR
- ±0.25%, ±10ppm/°C drift gain error (maximum)
- ±150µV, ±0.5µV/°C drift offset voltage (maximum)
- Operates from a 2.7V to 12V supply voltage range
- 650μA operational current
- Available gains:
- INA299A1-Q1: 20V/V
- INA299A2-Q1: 50V/V
- INA299A3-Q1: 100V/V
- SOT23-6 (DBV) package option
Applications
- eTurbo/chargers
- Electric Power Steering (EPS)
- Starter/generators
- Regenerative breaking
- Brake systems
Typical Application - DC/DC Converter
Block Diagram
Related Current Sense Amplifier
Texas Instruments INA299 High-Precision Current Sense Amplifier
Can measure voltage drops across shunt resistors over a wide common-mode range from –2V to 80V.