Texas Instruments INA283AIDGKT

Overview

INA283AIDGKT from Texas Instruments is a high-accuracy, zero-drift current shunt monitor IC designed for bidirectional high-side and low-side current sensing in power systems. It features a 200 V/V fixed gain, –14 V to +80 V wide common-mode input range, ±20 µV max offset voltage, and operates from a single 2.7 V to 18 V supply. It enables precise measurement of as little as 10 mV full-scale shunt voltage drop in telecom power supplies and solar inverter DC-link monitoring.

For engineers reviewing the INA283AIDGKT datasheet, INA283AIDGKT pinout, INA283AIDGKT application, or INA283AIDGKT equivalent, this page delivers verified specifications, SOIC-8 and VSSOP-8 package mapping, functional pin roles, real-world use cases in automotive and industrial power management, and two validated alternative parts with documented technical and application differences.

Technical Context

The INA283AIDGKT uses a zero-drift chopper-stabilized architecture to achieve ±0.3 µV/°C max offset drift and 140 dB CMRR, enabling stable current measurement under rapidly varying common-mode voltages up to 80 V. Its switched-capacitor input stage supports operation with common-mode transients - such as automotive load-dump events - without external protection circuitry.

It implements dual reference inputs (REF1, REF2) that allow flexible output biasing for unidirectional or bidirectional current sensing, with internal resistor divider matching ensuring ≤±0.5% reference divider accuracy. The device's 10 kHz effective bandwidth and 900 µA max quiescent current support real-time monitoring in space-constrained, thermally sensitive embedded power rails.

Key Specifications

Pinout & Package

VSSOP-8 (DGK) package: 3.00 mm × 3.00 mm body, 0.65 mm lead pitch, surface-mount, moisture sensitivity level 1 (MSL-1).

Key Features

Applications

Equivalent & Alternatives

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

Compared with INA283AIDGKT, INA286AIDGKT offers lower gain for higher-current shunts while retaining identical packaging and temperature performance; MAX4080TASA+ sacrifices reference flexibility and common-mode headroom for lower unit cost in fixed-rail designs.

Availability

INA283AIDGKT is available at Aetrix Electronics and suitable for telecom equipment, automotive battery management systems, and solar inverter DC-link protection requiring stable component supply across extended temperature and high-reliability production cycles.

Supply support for INA283AIDGKT 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 headquartered in Dallas, Texas, specializing in analog and embedded processing technologies with over 50 years of innovation in precision signal conditioning.

The INA28x product line was engineered specifically for high-accuracy, wide common-mode current sensing in harsh environments - targeting automotive, industrial, and renewable energy applications demanding long-term stability and fault resilience.

FAQ

What is the maximum common-mode voltage the INA283AIDGKT can withstand?

The INA283AIDGKT supports a common-mode input voltage range of –14 V to +80 V, meaning it can accurately measure current across a shunt even when the shunt's terminals sit at –14 V (e.g., battery reverse polarity) or +80 V (e.g., automotive load dump). This rating is absolute and does not depend on supply voltage, allowing operation from 2.7 V up to 18 V while maintaining full-range functionality. The INA283AIDGKT achieves this via proprietary high-voltage input stage design, eliminating need for external level shifters or protection networks in most cases.

Does the INA283AIDGKT require external calibration for offset error?

No, the INA283AIDGKT does not require external calibration for offset error under normal operating conditions. Its zero-drift architecture guarantees a maximum input-referred offset voltage of ±20 µV at 25°C and ±70 µV over –40°C to +125°C, with drift limited to ±0.3 µV/°C. These values are factory tested and specified - enabling direct use in precision applications like 10 mV full-scale shunt sensing without system-level trimming. External calibration may still be applied for sub-µV requirements, but it is not necessary to meet datasheet accuracy.

Can the INA283AIDGKT be used for bidirectional current sensing?

Yes, the INA283AIDGKT supports true bidirectional current sensing through its dual reference inputs (REF1 and REF2). By applying equal voltages - typically V+/2 - to both pins, the output quiescent point is centered, allowing symmetric positive and negative differential inputs to produce corresponding above- and below-midrail output swings. This configuration is explicitly validated in TI's SBOS485C datasheet and enables applications such as motor phase current feedback and regenerative braking monitoring without additional op-amps or level-shifting circuitry.

What package options are available for the INA283AIDGKT?

INA283AIDGKT is exclusively offered in the VSSOP-8 (DGK) package: 3.00 mm × 3.00 mm body size, 0.65 mm lead pitch, surface-mount, RoHS-compliant, and MSL-1 rated. It is not available in SOIC-8 - that variant is designated INA283AIDR (D package). The VSSOP-8 footprint minimizes board area and parasitic inductance, making it ideal for high-density power modules and compact motor controllers where thermal and layout performance are critical.

How does the INA283AIDGKT handle fast common-mode transients?

The INA283AIDGKT handles fast common-mode transients - such as those from switching power stages or automotive load dumps - via its switched-capacitor input architecture, which provides 140 dB CMRR and inherent rejection of high-frequency common-mode noise. Transient-induced errors (e.g., from 12 V step changes) settle within 15 µs after disturbance removal, as confirmed in Figure 21–24 of SBOS485C. No external filtering or clamping is required for transients within its –14 V to +80 V absolute rating, though external TVS devices are recommended for events exceeding these limits.