Texas Instruments INA183A1IDBVT

Overview

INA183A1IDBVT 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 50 V/V fixed gain, ±170 μV max offset voltage, 0.4% max gain error over temperature, 80-kHz bandwidth, and draws only 130 μA quiescent current from the IN+ pin. It enables accurate 10-mV full-scale shunt measurements in server power rails and telecom power supplies.

For engineers reviewing the INA183A1IDBVT datasheet, INA183A1IDBVT pinout, INA183A1IDBVT application, or INA183A1IDBVT equivalent, key selection criteria include its single-supply operation from IN+, 2.7–26 V common-mode range, SOT-23 (DBV) 5-pin package, and compatibility with low-power, high-accuracy current monitoring in constrained thermal environments.

Technical Context

The INA183A1IDBVT implements a zero-drift chopper-stabilized architecture to achieve 0.5 μV/°C max offset drift and 10 ppm/°C max gain drift across –40°C to +125°C. Its internal matched resistor network sets a precise 50 V/V gain without external components.

It 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 + 5 mV to (IN+) – 50 mV under 10-kΩ load. Power is sourced solely from the IN+ pin - no separate V_CC required.

Key Specifications

Pinout & Package

INA183A1IDBVT is housed in a 5-pin SOT-23 (DBV) package measuring 2.90 mm × 1.60 mm, with exposed pad not electrically connected. The package supports reflow soldering per MSL Level-2 (260°C peak).

Key Features

Applications

Equivalent & Alternatives

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

Compared with INA183A1IDBVT, INA240A1DDBVR offers superior voltage range and bidirectionality at higher power cost, while MAX40010FAUT+T provides enhanced transient protection in identical packaging - both require schematic and layout review due to functional and pinout differences.

Availability

INA183A1IDBVT is available at Aetrix Electronics and suitable for server power monitoring, telecom DC distribution, and industrial 24-V PLC power supplies requiring stable component supply and long-term design continuity.

Supply support for INA183A1IDBVT 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 product line was designed specifically for high-accuracy, low-power current sensing in high-side configurations across computing, communications, and industrial power systems - prioritizing zero-drift stability and single-supply simplicity.

FAQ

What is the supply configuration for INA183A1IDBVT?

The INA183A1IDBVT draws all operating power from the IN+ pin, which must be biased between 2.7 V and 26 V. There is no separate V_CC pin or external supply requirement. This architecture eliminates auxiliary regulators in high-voltage rails and reduces system-level component count. The INA183A1IDBVT consumes up to 130 μA from IN+, making it ideal for low-power monitoring applications.

Can INA183A1IDBVT measure bidirectional current?

No, the INA183A1IDBVT is designed exclusively for unidirectional high-side current sensing. Its internal architecture and specified operating conditions assume current flows from the supply (IN+) through the shunt to the load (IN–). It does not support negative differential input voltages or reverse-current detection. For bidirectional applications, consider alternatives like the INA240 series. The INA183A1IDBVT's functionality is strictly defined by its zero-drift, single-supply, high-side topology.

What is the maximum shunt voltage compatible with INA183A1IDBVT?

The INA183A1IDBVT supports full-scale shunt voltage drops as low as 10 mV due to its ±170 μV maximum offset voltage and 50 V/V gain - yielding a 500-mV output signal. At 25°C, typical offset is ±25 μV, allowing even lower effective shunt voltages. However, the absolute maximum differential input is limited by common-mode constraints and output swing; sustained operation above 10 mV full-scale increases sensitivity to offset drift and gain error. The INA183A1IDBVT is optimized for 10-mV full-scale use cases.

Does INA183A1IDBVT require an external bypass capacitor?

Yes, a 0.1-μF ceramic bypass capacitor is mandatory between the IN+ pin and GND, placed as close as possible to the device. This stabilizes the internal power rail derived from IN+ and suppresses high-frequency noise that could modulate the zero-drift amplifier. TI recommends placing the capacitor directly across Pins 5 (IN+) and 1/2 (GND) with minimal trace length. Failure to include this capacitor may cause oscillation or degraded CMRR in the INA183A1IDBVT.

Is INA183A1IDBVT pin-compatible with other INA183 variants?

Yes, all INA183 variants - including INA183A1IDBVT (50 V/V), INA183A2IDBVT (100 V/V), and INA183A3IDBVT (200 V/V) - share identical 5-pin SOT-23 (DBV) packaging and pinout. The only difference is internal gain-setting resistor ratios; no external changes are needed for substitution. However, bandwidth scales inversely with gain (80 kHz for A1, 30 kHz for A2, 14 kHz for A3), so system bandwidth requirements must be verified when swapping variants. The INA183A1IDBVT maintains full mechanical and electrical compatibility within the family.