Texas Instruments INA183A3IDBVT

Overview

INA183A3IDBVT from Texas Instruments is a high-precision, zero-drift current-sense amplifier optimized for unidirectional high-side sensing in 2.7-V to 26-V systems. It delivers fixed 200 V/V gain, ±170 μV max offset voltage, 0.5 μV/°C max offset drift, and operates across –40 °C to +125 °C - enabling accurate 10-mV full-scale shunt measurements in server power rails and telecom power supplies.

For engineers reviewing the INA183A3IDBVT datasheet, INA183A3IDBVT pinout, INA183A3IDBVT application, or INA183A3IDBVT equivalent, key selection criteria include its IN+-powered architecture, SOT-23 (DBV) 5-pin package, 14 kHz bandwidth at 200× gain, 130 μA max quiescent current, and guaranteed CMRR ≥100 dB over temperature - all critical for low-power, high-common-mode industrial current monitoring.

Technical Context

The INA183A3IDBVT uses a zero-drift chopper-stabilized topology to achieve ultra-low offset and drift, with internal matched resistor networks ensuring precise 200 V/V gain stability (≤10 ppm/°C). Its single-supply operation draws power directly from the IN+ pin - eliminating need for auxiliary rails - and supports common-mode inputs up to 26 V while maintaining rail-to-rail output swing capability relative to GND and IN+.

This device functions exclusively in high-side, unidirectional mode: IN+ connects to the supply side of the shunt, IN– to the load side, and OUT delivers a voltage proportional to sensed current. Input bias current remains ≤40 μA across 2.7–26 V common-mode range, and differential overload recovery occurs within ~30 μs without inversion or damage.

Key Specifications

Pinout & Package

INA183A3IDBVT is housed in a 5-pin SOT-23 (DBV) package measuring 2.90 mm × 1.60 mm, with exposed pad not electrically connected. Thermal resistance R_θJA = 164.2 °C/W supports operation at full ambient range with minimal heatsinking.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar current-sense amplifier applications.

Compared with INA183A3IDBVT, INA240A3D extends common-mode range and supports bidirectional sensing at higher power, while MAX40056ATA+T integrates digitization but trades analog simplicity for firmware overhead - making INA183A3IDBVT optimal for cost-sensitive, analog-focused high-side monitoring where 26-V compliance and ultra-low IQ are essential.

Availability

INA183A3IDBVT is available at Aetrix Electronics and suitable for server power monitoring, industrial 24-V power supplies, and telecom rectifier modules requiring stable component supply and long-term production continuity.

Supply support for INA183A3IDBVT 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 leader specializing in analog and embedded processing technologies, with decades of expertise in precision amplifiers and power management ICs.

The INA183 family was designed specifically for high-accuracy, high-common-mode current sensing in space-constrained, thermally demanding applications - emphasizing zero-drift performance, IN+-powered simplicity, and robustness in server, telecom, and industrial power systems.

FAQ

What is the maximum common-mode voltage supported by the INA183A3IDBVT?

The INA183A3IDBVT supports a common-mode input voltage range from 2.7 V to 26 V. This specification is guaranteed over the full operating temperature range of –40 °C to +125 °C. The device maintains specified accuracy and functionality at 26 V, making it suitable for direct connection to 24-V industrial rails and 12-V server backplanes without attenuation or level-shifting circuitry. Exceeding 26 V risks violating absolute maximum ratings.

Does the INA183A3IDBVT require an external power supply?

No, the INA183A3IDBVT does not require an external power supply. It draws operating power directly from the IN+ pin, which must be biased between 2.7 V and 26 V. This architecture eliminates the need for a separate V_CC rail, reducing system complexity and board space. The maximum quiescent current drawn from IN+ is 130 μA, measured at zero sense voltage and across temperature.

What is the bandwidth of the INA183A3IDBVT and how does it affect current measurement?

The INA183A3IDBVT has a small-signal bandwidth of 14 kHz when configured at its 200 V/V gain setting. This bandwidth supports accurate measurement of DC and low-frequency AC current components up to ~10 kHz - sufficient for overcurrent protection, power sequencing, and steady-state load monitoring in servers and telecom rectifiers. Higher-frequency transients beyond 14 kHz will be attenuated per the device's first-order roll-off.

Can the INA183A3IDBVT be used for bidirectional current sensing?

No, the INA183A3IDBVT is designed exclusively for unidirectional high-side current sensing. Its internal architecture and specified operating conditions assume current flows from the supply (connected to IN+) to the load (connected to IN–). The output voltage is referenced to GND and cannot go below ~5 mV, preventing meaningful representation of reverse current. For bidirectional applications, consider alternatives such as the INA240 series.

What package type and pin configuration does the INA183A3IDBVT use?

The INA183A3IDBVT uses a 5-pin SOT-23 (DBV) package with dimensions 2.90 mm × 1.60 mm. Pin 1 and Pin 2 are both GND terminals, Pin 3 is OUT, Pin 4 is IN–, and Pin 5 is IN+. This dual-GND configuration lowers ground path impedance and improves PSRR. The device is not pin-compatible with standard op-amp SOT-23 footprints due to the shared GND pins and absence of dedicated power pins.