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Product Detailed Parameters
- Description：IC CURR SENSE 1 CIRCUIT SOT23-5
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT)
- Amplifier Type：Current Sense
- Number of Circuits：1
- Output Type：-
- Slew Rate：2.5V/µs
- Gain Bandwidth Product：-
- Current - Input Bias：20 µA
- Voltage - Input Offset：5 µV
- Current - Supply：1.5mA
- Current - Output / Channel：-
- Voltage - Supply Span (Min)：2.7 V
- Voltage - Supply Span (Max)：20 V
- Operating Temperature：-40°C ~ 125°C (TA)
- Grade：Automotive
- Qualification：AEC-Q100
- Mounting Type：Surface Mount
- Package / Case：SC-74A, SOT-753
- Supplier Device Package：SOT-23-5
- -3db Bandwidth：900 kHz
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Overview
The INA293B4QDBVRQ1 is an ultra-precise current sense amplifier with a fixed gain of 200 V/V. It operates from a single 2.7-V to 20-V supply and supports a common-mode voltage range from –4 V to +110 V. The device features a typical offset voltage of ±30 µV, a maximum gain error of ±0.15%, and a bandwidth of 900 kHz at the specified gain. It draws a quiescent current of 1.5 mA and is housed in a space-saving SOT-23 package.
Feature Summary
- Supports wide common-mode input voltages from -4 V to +110 V for high-side or low-side sensing
- Provides high accuracy with low offset voltage and minimal gain drift across temperature ranges
- Features high signal throughput with 1.3 MHz bandwidth capability for fast overcurrent protection
Applications
- 48-V automotive systems
- Solenoid control circuits
- 48-V DC/DC converters
- Valve control applications
Procurement Notes
Verify the specific suffix 'B4' confirms the 200 V/V gain configuration before procurement. Ensure the DBVR package variant matches the required PCB footprint. Confirm AEC-Q100 qualification status aligns with automotive reliability requirements. Validate that the operating temperature range meets system specifications.
Selection Notes
Select this component when a fixed 200 V/V gain is required for precise current measurement. Consider the 900 kHz bandwidth limit at this gain setting for dynamic response needs. Evaluate the 1.5 mA quiescent current against power budget constraints. Ensure the common-mode voltage stays within the specified operational limits.
Part Context
This part belongs to the INA293-Q1 family of ultra-precise current sense amplifiers designed for automotive applications. The family offers multiple gain options ranging from 20 V/V to 500 V/V. All variants share the same wide common-mode voltage range and transconductance architecture while differing in internal resistor networks.
Replacement Considerations
Other members of the INA293-Q1 family such as INA293A4QDBVRQ1 offer identical performance with different manufacturing lot variations. Devices with different gain suffixes like INA293B3QDBVRQ1 (100 V/V) require circuit redesign due to gain differences.
