Texas Instruments INA206AIPW

Overview

INA206AIPW from Texas Instruments is a unidirectional current-shunt monitor IC with 20 V/V gain, dual open-drain comparators (CMP1 latched, CMP2 delay-programmable), and integrated 1.2-V reference output. It operates from 2.7 V to 18 V supply, supports –16 V to 80 V common-mode input range, delivers 500-kHz bandwidth, and is housed in a TSSOP-14 package. It is used for overcurrent detection and precision shunt-based current measurement in high-side power rails.

For engineers reviewing the INA206AIPW datasheet, INA206AIPW pinout, INA206AIPW application, or INA206AIPW equivalent, key selection criteria include its 20 V/V fixed gain, latch-enabled comparator 1 with active-low reset, user-configurable CMP2 delay via external capacitor, 1.2-V reference output capability, and operation across –40°C to 125°C industrial temperature range.

Technical Context

The INA206AIPW integrates a precision current-sense amplifier, two independent comparators, and dual internal references (0.6 V shared between CMP1/CMP2 inputs and 1.2 V output). Its current-sense path features 80 dB minimum CMRR at full common-mode range and ±2.5 mV max offset voltage RTI over temperature. The latching comparator (CMP1) requires explicit reset via the active-low CMP1 RESET pin, while CMP2 supports programmable delay up to seconds using an external capacitor on the CMP2 DELAY pin.

Both comparators use internal 0.6-V thresholds with ±2 mV offset and 1.3 µs typical response time. The 1.2-V reference output provides ±12 mV accuracy (±1%) and 100 ppm/°C max drift over –40°C to 85°C, with load regulation of 0.4 mV/mA sourcing up to 1 mA. All analog functions operate from a single supply without need for split rails.

Key Specifications

Pinout & Package

TSSOP-14 package (5.00 mm × 4.40 mm body size) with exposed thermal pad; RoHS-compliant, moisture sensitivity level 3.

Key Features

Applications

Equivalent & Alternatives

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

Compared with INA207AIPW and INA208AIPW, the INA206AIPW offers the widest bandwidth (500 kHz) and lowest gain, making it optimal for applications requiring fastest transient response with moderate shunt voltage headroom (≥50 mV), while maintaining compatibility across the family's pinout and feature set.

Availability

INA206AIPW is available at Aetrix Electronics and suitable for server power monitoring, automotive battery protection, and industrial 48-V DC distribution requiring stable component supply, long-term lifecycle support, and guaranteed traceability.

Supply support for INA206AIPW 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 specializing in analog and embedded processing technologies, with leadership in precision analog, power management, and signal chain solutions.

The INA20x product line was designed for high-accuracy, high-common-mode current sensing in power supply, motor control, and battery management systems-emphasizing integration of amplification, comparison, and reference in a single compact package.

FAQ

What is the maximum common-mode voltage supported by the INA206AIPW?

The INA206AIPW supports a common-mode input voltage range of –16 V to 80 V. This allows direct high-side current sensing in demanding applications such as 48-V telecom systems, 12-V automotive battery rails, and industrial equipment with negative supply domains. The specification is guaranteed over the full operating temperature range of –40°C to 125°C.

How does the latching function of Comparator 1 work in the INA206AIPW?

In the INA206AIPW, Comparator 1 (CMP1) provides latched output behavior: once triggered by an overcurrent event, CMP1 OUT remains asserted (low) until the active-low CMP1 RESET pin is pulsed. Leaving CMP1 RESET open or grounded enables transparent operation; pulling it low for ≥1.5 µs clears the latch. This ensures fault persistence across microcontroller resets or polling intervals.

Can the 1.2-V reference output of the INA206AIPW drive external circuitry?

Yes, the 1.2V REF OUT pin of the INA206AIPW can source up to 1 mA with ±12 mV accuracy (±1%) and load regulation of 0.4 mV/mA. It is intended for biasing external comparators, ADC references, or sensor excitation circuits. For loads exceeding 1 mA, an external buffer is recommended to maintain accuracy and stability.

What capacitor value is needed to achieve a 1-second delay on Comparator 2 of the INA206AIPW?

To achieve a 1-second delay on Comparator 2 of the INA206AIPW, connect a 0.2 µF capacitor between the CMP2 DELAY pin (Pin 9) and GND. The delay follows t_D = 5 × C_DELAY (in µF), so C_DELAY = t_D/5 = 1/5 = 0.2 µF. This delay applies to both rising and falling edges of CMP2 OUT and is exclusive to 14-pin packages like the INA206AIPW.

Is the INA206AIPW pin-compatible with other members of the INA20x family?

Yes, the INA206AIPW is fully pin-compatible with the INA207AIPW and INA208AIPW in SO-14 and TSSOP-14 packages. All share identical pin functions, electrical interfaces, and feature sets-including dual comparators, 1.2-V reference output, and CMP2 DELAY capability. Only the gain (20 V/V vs. 50/100 V/V) and bandwidth differ, enabling drop-in sensitivity upgrades without PCB redesign.