Texas Instruments INA207AIPWR

Overview

INA207AIPWR from Texas Instruments is a unidirectional current-shunt monitor IC with 50 V/V gain, dual open-drain comparators (one latching with reset, one with user-programmable delay), and integrated 1.2-V reference output. It operates from 2.7 V to 18 V, supports common-mode input voltages from –16 V to 80 V, and delivers 500-kHz bandwidth for real-time shunt current sensing in high-side or low-side configurations.

For engineers reviewing the INA207AIPWR datasheet, INA207AIPWR pinout, INA207AIPWR application, or INA207AIPWR equivalent, this device is selected for precision overcurrent detection, fault-latched power rail monitoring, and programmable delay-based event sequencing in telecom, server, and industrial power systems where wide common-mode range and internal reference stability are critical.

Technical Context

The INA207AIPWR integrates a high-accuracy current-sense amplifier with fixed 50 V/V gain and ±2.5 mV RTI offset (max over temperature), enabling accurate conversion of shunt voltage drops (e.g., 20–100 mV) into scalable output voltages (1–5 V). Its dual comparator subsystem uses internal 0.6-V references-overrideable on pins 3 and 6-with Comparator 1 providing latch-and-reset behavior via active-low CMP1 RESET and Comparator 2 supporting adjustable delay via external capacitor on CMP2 DELAY pin.

Designed for operation across –40°C to +125°C, the device features 100 dB minimum CMRR at 12 V ≤ VCM ≤ 80 V, 1.8 mA quiescent current, and SO-14/TSSOP-14 package compatibility. The 1.2-V REF OUT pin supplies a precision reference with ≤100 ppm/°C drift and ±0.5% initial accuracy, usable for external comparator thresholds or ADC reference scaling.

Key Specifications

Pinout & Package

INA207AIPWR is packaged in SO-14 (8.65 mm × 3.91 mm) and TSSOP-14 (5.00 mm × 4.40 mm) variants. Both share identical pinout and functionality.

Key Features

Applications

Equivalent & Alternatives

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

Compared with INA206AIPWR and INA208AIPWR, the INA207AIPWR offers balanced gain (50 V/V), optimal trade-off between resolution and noise immunity, and widest usable common-mode range across its full accuracy spec-making it the default choice for mid-range current sensing in 12–48 V systems.

Availability

INA207AIPWR is available at Aetrix Electronics and suitable for telecom rectifier modules, server power distribution units, industrial motor drive protection circuits, and battery management systems requiring stable component supply with guaranteed long-term availability.

Supply support for INA207AIPWR 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 monitoring in power-constrained, high-voltage environments-targeting telecom infrastructure, enterprise computing, and industrial automation where fault detection speed, latch persistence, and reference stability directly impact system uptime.

FAQ

What is the maximum common-mode voltage supported by the INA207AIPWR?

The INA207AIPWR 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 negative-rail battery monitoring without level-shifting circuitry. The specification is guaranteed across the full –40°C to +125°C operating temperature range, with 100 dB minimum CMRR maintained for VCM between 12 V and 80 V.

How does the latching function of Comparator 1 work in the INA207AIPWR?

In the INA207AIPWR, Comparator 1 output latches high (open-drain pulled low) upon exceeding its threshold and remains latched until the active-low CMP1 RESET pin is driven low. When left floating or high, the internal 2-MΩ pull-down keeps RESET low, enabling transparent operation. This latch ensures fault persistence across power cycles or microcontroller sleep states, making it ideal for safety-critical overcurrent detection where missed events are unacceptable.

Can the 0.6-V internal reference of the INA207AIPWR be overridden by an external voltage?

Yes-the INA207AIPWR allows overriding the internal 0.6-V reference on pins 3 (CMP1 IN− / 0.6V REF) and 6 (CMP2 IN+ / 0.6V REF) with external voltages. These pins accept inputs from 0 V to (VS – 1.5 V) and will use the external voltage as the comparator threshold instead of the internal reference. This enables custom trip points without external resistive dividers, improving accuracy and reducing component count in precision monitoring applications.

What capacitor value is needed to achieve a 1-second delay on Comparator 2 of the INA207AIPWR?

To achieve a 1-second delay on Comparator 2 of the INA207AIPWR, connect a 2.0 µF capacitor between the CMP2 DELAY pin (pin 9) and GND. The delay equation is t_D = 5 × C_DELAY (with C_DELAY in µF and t_D in seconds), verified per TI SBOS360F datasheet Figure 30 and Section 7.6. Use X7R ceramic capacitors with ≥10-V rating and low ESR for stable timing performance across temperature.

Is the 1.2-V reference output of the INA207AIPWR suitable for driving an external ADC reference input?

Yes-the 1.2-V REF OUT pin of the INA207AIPWR provides a precision reference with ±0.5% initial accuracy, ≤100 ppm/°C drift, and load regulation of ≤2 mV/mA (typical). It is rated for up to 1 mA output current and supports standard 12-bit and 16-bit SAR ADCs with 1.2-V reference inputs. For best performance, use a 100-nF ceramic bypass capacitor close to the pin and avoid routing noisy digital traces near the reference net.