Texas Instruments INA592IDGKT

Overview

INA592IDGKT from Texas Instruments is a high-precision, wide-bandwidth e-trim™ difference amplifier with fixed gain options of G = 1/2 or G = 2, 40 μV maximum offset voltage, ±2 μV/°C max drift, and 2 MHz GBW. It operates from single (4.5 V to 36 V) or dual (±2.25 V to ±18 V) supplies and delivers 18 V/μs slew rate for accurate high-voltage industrial current/voltage sensing.

For engineers reviewing the INA592IDGKT datasheet, INA592IDGKT pinout, INA592IDGKT application, or INA592IDGKT equivalent, this page provides verified technical context, real-world design meaning of key specs, validated pin functions for the 8-pin VSSOP package, confirmed application use cases in servo feedback and condition monitoring, and two rigorously cross-checked alternative parts with documented functional and application differences.

Technical Context

The INA592IDGKT integrates a precision op amp with a laser-trimmed resistor network enabling stable gain accuracy and CMRR over temperature. Its internal topology supports both G = 1/2 (differential input → scaled output) and G = 2 (inverting configuration with REF as positive input) modes without external resistors.

It features rail-to-rail output swing (within 130–220 mV of rails), common-mode input range extending to the negative supply, and robust capacitive load drive up to 500 pF-enabling direct interface with ADC drivers and isolated sensing front-ends in high-noise industrial environments.

Key Specifications

Pinout & Package

INA592IDGKT is packaged in an 8-pin VSSOP (DGK) with 3.00 mm × 3.00 mm body size, optimized for space-constrained PCB layouts in motor drives and power modules.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar difference amplifier applications.

Compared with INA159IDR and INA137UA, the INA592IDGKT uniquely combines e-trim™ precision, single-supply flexibility, and 125°C operation-making it the only option qualified for high-reliability industrial motion control where gain accuracy, thermal stability, and supply versatility are simultaneously required.

Availability

INA592IDGKT is available at Aetrix Electronics and suitable for AC drive position feedback, servo drive position feedback, and condition monitoring modules requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for INA592IDGKT 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 chain solutions.

The INA592 belongs to TI's e-trim™ precision amplifier product line, engineered specifically for high-voltage industrial sensing applications demanding ultra-low drift, wide bandwidth, and robust operation in harsh thermal and EMI environments.

FAQ

What gain configurations does the INA592IDGKT support?

The INA592IDGKT supports two factory-set gain options: G = 1/2 and G = 2. These are implemented via internal laser-trimmed resistors and require no external components. Configuration is determined by external pin connections-REF and SENSE pins define the mode. The INA592IDGKT datasheet specifies electrical characteristics separately for each gain setting, including distinct bandwidth (2 MHz at G = 1/2, 0.8 MHz at G = 2) and CMRR (88 dB min vs. 82 dB min).

Does the INA592IDGKT support true single-supply operation?

Yes, the INA592IDGKT supports true single-supply operation from 4.5 V to 36 V. Its input common-mode range extends to the negative supply rail (V–), and its output swings within 130–220 mV of both rails. This allows direct sensing of ground-referenced shunt voltages or signals biased near V– without level-shifting circuitry-making the INA592IDGKT ideal for 24 V industrial systems where dual supplies are impractical.

What is the maximum capacitive load the INA592IDGKT can drive?

The INA592IDGKT is specified to drive up to 500 pF capacitively at its output pin while maintaining stability and specified settling time (≤1.3 µs to 0.01%). This capability eliminates the need for external buffer amplifiers when interfacing with ADC input capacitors, long PCB traces, or optocoupler inputs-reducing bill-of-materials count and layout complexity in high-density power module designs using the INA592IDGKT.

How does the e-trim™ technology improve performance over standard difference amplifiers?

e-trim™ technology uses laser trimming of on-chip thin-film resistors to achieve <0.03% gain error and excellent resistor ratio tracking over temperature. Unlike discrete resistor networks subject to TCR mismatch, the INA592IDGKT's monolithic e-trim™ structure ensures CMRR remains ≥88 dB across –40°C to +125°C. This translates to consistent rejection of bus noise in motor drives-where standard amplifiers may degrade >10 dB in CMRR over the same range.

Is the INA592IDGKT pin-compatible with other TI difference amplifiers like the INA159 or INA137?

No, the INA592IDGKT is not pin-compatible with the INA159IDR or INA137UA. While all three are 8-pin SOIC/VSSOP difference amplifiers, their pin functions differ significantly: INA592IDGKT uses dedicated REF and SENSE pins for gain configuration, whereas INA159IDR repurposes those pins for gain-setting resistors, and INA137UA uses them for audio-balanced input termination. PCB layout must be redesigned when substituting-confirming that the INA592IDGKT requires its own footprint.