Texas Instruments INA183A2IDBVR

Overview

INA183A2IDBVR 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 100 V/V fixed gain, ±170 μV max offset voltage, 0.4% max gain error over temperature, and operates with only 130 μA quiescent current drawn from the IN+ pin-enabling accurate 10-mV full-scale shunt measurements in server power rails and telecom supplies.

For engineers reviewing the INA183A2IDBVR datasheet, INA183A2IDBVR pinout, INA183A2IDBVR application, or INA183A2IDBVR equivalent, key selection criteria include its single-supply operation from IN+, 30-kHz bandwidth at 100× gain, SOT-23-5 package compatibility with high-density layouts, and guaranteed performance across –40°C to +125°C without external calibration.

Technical Context

The INA183A2IDBVR uses a chopper-stabilized zero-drift architecture to achieve 0.5 μV/°C max offset drift and 10 ppm/°C max gain drift-critical for stable current monitoring over wide temperature ranges. Its input stage accepts common-mode voltages up to 26 V while rejecting interference via 120 dB typical CMRR.

This device operates exclusively in high-side, unidirectional mode: IN+ connects to the supply rail (2.7–26 V), IN– to the load side of the shunt, and output swings from GND to within 50 mV of IN+. No separate V_CC is required-the IN+ pin serves as both input reference and power source.

Key Specifications

Pinout & Package

INA183A2IDBVR is housed in a 5-pin SOT-23 (DBV) package measuring 2.90 mm × 1.60 mm, with exposed pad option not applicable. The package supports reflow per JEDEC Level-2-260°C-1-year MSL rating and RoHS-compliant Sn lead finish.

Key Features

Applications

Equivalent & Alternatives

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

Compared with INA183A2IDBVR, INA240A1IDR offers wider voltage range and bidirectional capability at the cost of added supply complexity, while MAX40056AUT+T trades dual GND pins for transient-hardened inputs-making each suitable for distinct high-reliability or high-voltage niches.

Availability

INA183A2IDBVR is available at Aetrix Electronics and suitable for server power monitoring, telecom rectifier control, and industrial PLC power supply applications requiring stable component supply, long-lifecycle assurance, and RoHS-compliant sourcing.

Supply support for INA183A2IDBVR 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 signal conditioning and power management ICs.

The INA183 family was designed specifically for high-accuracy, high-side current sensing in space- and power-constrained systems-targeting server, telecom, and industrial applications where low offset, minimal drift, and single-supply simplicity are critical.

FAQ

What is the maximum common-mode voltage the INA183A2IDBVR can handle?

The INA183A2IDBVR supports a common-mode input range from 2.7 V to 26 V. This means the voltage at the IN+ pin-serving as both input reference and power source-can safely reach up to 26 V, enabling direct integration into 12-V server rails and 24-V industrial supplies without attenuation or level shifting. Operation below 2.7 V is not guaranteed.

Does the INA183A2IDBVR require an external power supply?

No, the INA183A2IDBVR draws all operating current (≤130 μA) directly from the IN+ pin, eliminating the need for a separate V_CC. This single-supply architecture simplifies design in high-voltage domains where auxiliary low-voltage rails are unavailable or impractical-making INA183A2IDBVR ideal for compact, high-efficiency current sensing nodes.

Can the INA183A2IDBVR measure bidirectional current?

No, the INA183A2IDBVR is specified for unidirectional, high-side current sensing only. Its functional block diagram and absolute maximum ratings confirm it is not designed to handle negative differential inputs or reverse current flow. For bidirectional applications, consider alternatives like the INA240 series, which explicitly support symmetric ±V_SENSE operation.

What is the bandwidth of the INA183A2IDBVR and how does gain affect it?

The INA183A2IDBVR has a small-signal bandwidth of 30 kHz when loaded with 10 pF, specific to its 100 V/V gain setting. Bandwidth scales inversely with gain: the A1 variant (50 V/V) achieves 80 kHz, while the A3 (200 V/V) drops to 14 kHz. This trade-off is inherent to the internal resistor network and must be considered when selecting gain for dynamic current profiling or fast fault detection.

How does the zero-drift architecture improve long-term accuracy in the INA183A2IDBVR?

The zero-drift (chopper-stabilized) architecture in the INA183A2IDBVR actively cancels input offset voltage and its temperature drift, achieving ≤0.5 μV/°C max offset drift. Over the full –40°C to +125°C range, this limits total offset variation to under ±2 μV-far superior to standard amplifiers-and ensures stable calibration without periodic software correction or hardware trimming throughout product lifetime.