Texas Instruments INA195AIDBVR

Overview

INA195AIDBVR from Texas Instruments is a high-voltage current shunt monitor IC designed for bidirectional sensing across shunt resistors in power rails operating from −16 V to +80 V common-mode voltage, with 100 V/V fixed gain, 200 kHz bandwidth, and ±3% total output error over −40°C to +125°C - used in battery charger current feedback and telecom power supply monitoring.

For engineers reviewing the INA195AIDBVR datasheet, INA195AIDBVR pinout, INA195AIDBVR application, or INA195AIDBVR equivalent, this page delivers verified specifications, SOT-23-5 pin mapping, real-world use cases in automotive and industrial power systems, and two validated alternative parts with documented functional and layout differences.

Technical Context

The INA195AIDBVR employs a patented dual-amplifier front-end architecture that enables operation across −16 V to +80 V common-mode range while powered by a single +2.7 V to +18 V supply - eliminating need for level-shifting or isolated supplies. Its 100 V/V gain is laser-trimmed and stable over temperature.

It delivers 200 kHz small-signal bandwidth and 2 μs settling time (1%), supporting fast current control loops in switching regulators and motor drivers. Input bias current remains below ±16 μA across full common-mode range, minimizing shunt measurement error.

Key Specifications

Pinout & Package

SOT-23-5 (DBV) package: 2.90 mm × 1.60 mm footprint, surface-mount, lead-free, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar current shunt monitor applications.

Compared with INA195AIDBVT and MAX4080TASA+, the INA195AIDBVR offers optimal combination of ultra-wide −16 V to +80 V common-mode range, minimal SOT-23-5 footprint, and lowest quiescent power - making it the preferred choice for space-constrained, high-voltage industrial and automotive current sensing where layout continuity and supply headroom are critical.

Availability

INA195AIDBVR is available at Aetrix Electronics and suitable for automotive battery management, telecom rectifier monitoring, and industrial motor drive protection requiring stable component supply across extended temperature and high common-mode voltage conditions.

Supply support for INA195AIDBVR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor company specializing in analog and embedded processing technologies, with leadership in precision analog, power management, and signal chain solutions.

The INA19x family was designed specifically for high-accuracy, high-common-mode current sensing in power conversion, battery systems, and industrial controls - prioritizing wide voltage range, low error, and robust thermal performance.

FAQ

What is the maximum common-mode voltage supported by the INA195AIDBVR?

The INA195AIDBVR supports a common-mode input voltage range of −16 V to +80 V, enabling direct sensing in negative-rail, high-side, and floating power domains. This specification is guaranteed across the full −40°C to +125°C operating temperature range and does not depend on the V+ supply voltage, which can be as low as +2.7 V.

Does the INA195AIDBVR require external gain-setting resistors?

No, the INA195AIDBVR features a factory-laser-trimmed fixed gain of 100 V/V. No external resistors are needed to set gain, eliminating resistor tolerance errors and board space. The device outputs 100 mV per 1 mV of sensed shunt voltage (e.g., 100 mV output for 1 mV across shunt), simplifying analog interface design.

What is the bandwidth and settling time of the INA195AIDBVR?

The INA195AIDBVR has a small-signal bandwidth of 200 kHz and achieves 1% settling in 2 μs for a 10 mV to 100 mV step input. These characteristics are measured with C_LOAD = 5 pF and support fast current loop control in switching power supplies and motor drivers operating up to ~50 kHz switching frequency.

Can the INA195AIDBVR operate from a 3.3 V supply?

Yes, the INA195AIDBVR operates from a single supply ranging from +2.7 V to +18 V, fully supporting 3.3 V logic-compatible systems. At V+ = 3.3 V, the output swings from GND +50 mV to V+ −0.2 V (i.e., up to 3.1 V), and quiescent current remains ≤900 μA - making it ideal for low-voltage portable and IoT power monitoring applications.

How does the INA195AIDBVR handle low differential input voltages (<20 mV)?

At V_SENSE < 20 mV, the INA195AIDBVR exhibits degraded accuracy: output may deviate up to 300 mV when V_SENSE = 0 mV in certain common-mode regions (e.g., −16 V ≤ V_CM < 0 V). For precision measurement, operation should be maintained above 20 mV V_SENSE; below that, calibration or oversampling is recommended.