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Product Detailed Parameters
- Description：IC CURR SENSE 1 CIRCUIT TSOT23-8
- Series：Zero-Drift
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT)
- Amplifier Type：Current Sense
- Number of Circuits：1
- Output Type：Rail-to-Rail
- Slew Rate：0.3V/µs
- Gain Bandwidth Product：33 kHz
- Current - Input Bias：500 pA
- Voltage - Input Offset：3 µV
- Current - Supply：48µA
- Current - Output / Channel：-
- Voltage - Supply Span (Min)：1.7 V
- Voltage - Supply Span (Max)：5.5 V
- Operating Temperature：-40°C ~ 125°C (TA)
- Grade：-
- Qualification：-
- Mounting Type：Surface Mount
- Package / Case：SOT-23-8 Thin, TSOT-23-8
- Supplier Device Package：TSOT-23-8
- -3db Bandwidth：-
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Overview
The INA190A4IDDFT is a bidirectional, ultraprecise current sense amplifier manufactured by Texas Instruments. It operates with a supply voltage range of 1.7 V to 5.5 V and supports common-mode voltages from -200 mV to 40 V. The device features a fixed gain of 200 V/V, a gain bandwidth product of 33 kHz, and a 3 dB bandwidth of 33 kHz. Key electrical specifications include a maximum input bias current of 500 pA, an input offset voltage of -3 uV, and a typical power supply current of 65 uA. It offers a common-mode rejection ratio of 150 dB and operates within a temperature range of -40°C to +125°C.
Feature Summary
- Provides bidirectional current sensing capability for accurate monitoring in both directions.
- Features ultraprecise performance with low input bias current and minimal offset voltage.
- Supports high common-mode voltage ranges up to 40 V while operating on low supply voltages.
Applications
- Battery management systems
- Load switch control circuits
- Overcurrent protection designs
Procurement Notes
Verify the specific suffix IDDFT indicates the SOT-23-THIN package configuration. Confirm the A4 grade corresponds to the 200 V/V gain setting. Check manufacturer lifecycle status as end-of-life information may be present. Ensure compatibility with required thermal and electrical constraints before ordering.
Selection Notes
Select this component when a fixed 200 V/V gain is required for precise current measurement. The SOT-23-THIN package suits space-constrained applications. Verify that the 40 V common-mode voltage range meets system requirements. Consider the 65 uA quiescent current for low-power design constraints.
Part Context
This part belongs to the INA190 family of current sense amplifiers. It shares core architectural features with other variants like the INA190A2 and INA190A3 but differs in gain settings and packaging options. The family is designed for high-accuracy applications requiring low power consumption and wide common-mode voltage support.
Replacement Considerations
INA190A4IDDFR serves as an alternative reel-packaged version of the same functional device. Other gain variants such as INA190A2 or INA190A3 require circuit adjustments due to different gain factors.
