Texas Instruments INA207AIDGSTG4

Overview

INA207AIDGSTG4 from Texas Instruments is a unidirectional current-shunt monitor IC with 50 V/V gain, dual open-drain comparators (one latching, one with programmable delay), and integrated 1.2-V reference output. It operates from 2.7 V to 18 V, supports –16 V to 80 V common-mode input voltage, and delivers 500-kHz bandwidth for real-time shunt current sensing in high-side or low-side configurations. It is used in overcurrent protection circuits for telecom power supplies.

For engineers reviewing the INA207AIDGSTG4 datasheet, INA207AIDGSTG4 pinout, INA207AIDGSTG4 application, or INA207AIDGSTG4 equivalent, key selection criteria include its 50 V/V fixed gain, 1.2-V reference output capability, comparator latch/reset control, user-programmable CMP2 delay via external capacitor, and SO-14/TSSOP-14 package compatibility with industrial temperature range (–40°C to 125°C).

Technical Context

The INA207AIDGSTG4 integrates a precision current-sense amplifier with two independent comparators sharing internal 0.6-V references-both overrideable on pins 3 and 6 in 14-pin packages. Comparator 1 features active-low asynchronous reset (CMP1 RESET) and latched output behavior, while Comparator 2 supports adjustable delay via external capacitor on CMP2 DELAY pin (pin 9), enabling configurable response timing for fault hold-off.

Its current-sense path provides 50 V/V gain with ±2.2% total output error over temperature, 100 dB CMRR at 12 V ≤ VCM ≤ 80 V, and 500-kHz small-signal bandwidth. The 1.2-V REF OUT (pin 12) delivers ±12 mV accuracy (±1%) and 100 ppm/°C drift, supporting external biasing or ADC reference needs without additional components.

Key Specifications

Pinout & Package

INA207AIDGSTG4 is packaged in TSSOP-14 (5.00 mm × 4.40 mm) with wettable flanks, suitable for automated optical inspection and high-density PCB layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with INA206AIDGST and INA208AIDGST, the INA207AIDGSTG4 offers optimal trade-off between gain linearity and noise performance across 20–100 mV shunt ranges, making it the default choice for mid-range current monitoring (5–25 A) where 50× scaling best matches ADC resolution and dynamic range.

Availability

INA207AIDGSTG4 is available at Aetrix Electronics and suitable for telecom power supplies, automotive battery management systems, and industrial motor drive protection requiring stable component supply and extended temperature operation.

Supply support for INA207AIDGSTG4 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 INA20x family was designed specifically for high-reliability current sensing in power conversion systems, integrating amplifier, comparators, and references into a single package to reduce design complexity and improve fault response determinism.

FAQ

What is the maximum common-mode voltage supported by the INA207AIDGSTG4?

The INA207AIDGSTG4 supports a common-mode input voltage range of –16 V to 80 V. This allows direct high-side sensing in 48-V telecom systems and low-side sensing in negative-rail industrial equipment. The specification is validated across the full operating temperature range (–40°C to 125°C) and applies to both VIN+ and VIN– pins independently.

Does the INA207AIDGSTG4 require external components to operate its comparators?

No, the INA207AIDGSTG4 includes internal 0.6-V references for both comparators and a 1.2-V reference output. External components are only needed for optional functions: a pull-up resistor on CMP1 OUT/CMP2 OUT (typically 5.1 kΩ to VS), and a capacitor on CMP2 DELAY (pin 9) to set delay time. No external reference or hysteresis components are required for basic operation.

Can the 1.2-V reference output of the INA207AIDGSTG4 drive an external ADC reference input?

Yes, the 1.2V REF OUT (pin 12) of the INA207AIDGSTG4 is specified for up to 1 mA load current with ±12 mV accuracy and <100 ppm/°C drift. It can directly serve as a stable reference for 12-bit ADCs with input impedance >10 kΩ, eliminating need for a separate voltage reference IC in cost-sensitive designs.

How does the latching behavior of Comparator 1 work in the INA207AIDGSTG4?

Comparator 1 in the INA207AIDGSTG4 asserts CMP1 OUT low when its inputs cross threshold and remains latched in that state until the active-low CMP1 RESET pin (pin 8) is pulled below 1.1 V. Leaving CMP1 RESET open or grounded enables automatic reset on power-up, while driving it high disables reset functionality-allowing persistent fault indication until system firmware intervenes.

What is the typical delay range achievable with the CMP2 DELAY pin on the INA207AIDGSTG4?

The CMP2 DELAY pin (pin 9) supports programmable delay from ~100 ms to several seconds using standard ceramic capacitors. For example, a 0.1 µF capacitor yields ~0.5 s delay (t_D = 5 × C_DELAY), while 1 µF gives ~5 s. The delay applies identically to rising and falling edges of CMP2 OUT, and is implemented via internal current sources charging the external capacitor to 0.6 V threshold.