Texas Instruments INA204AIDGSR

Overview

INA204AIDGSR from Texas Instruments is a unidirectional current-shunt monitor IC with 50 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, supports –16 V to 80 V common-mode input range, and delivers 300 kHz bandwidth for precision shunt-based current sensing in high-side or low-side configurations.

For engineers reviewing the INA204AIDGSR datasheet, INA204AIDGSR pinout, INA204AIDGSR application, or INA204AIDGSR equivalent, this device is selected for overcurrent protection with programmable delay, bidirectional fault latching, and rail-to-rail output swing in power management systems where accuracy, voltage tolerance, and comparator flexibility are critical.

Technical Context

The INA204AIDGSR integrates a precision current-sense amplifier with fixed 50 V/V gain, two independent comparators sharing internal 0.6-V references (override-capable on 14-pin packages), and a buffered 1.2-V reference output. Its architecture enables simultaneous analog monitoring and digital fault detection without external components.

Comparator 1 features active-low reset control and latch-on-trip behavior; Comparator 2 accepts an external capacitor on the CMP2 DELAY pin to set delay time (e.g., 0.1 µF = 0.5 s). The 10-pin VSSOP package omits pins for 0.6-V reference override and 1.2-V REF OUT, confirming the DGS variant uses only core functional terminals.

Key Specifications

Pinout & Package

INA204AIDGSR is housed in a 10-pin VSSOP package (3.00 mm × 3.00 mm) with exposed thermal pad. This compact surface-mount package supports high-density PCB layouts and enhanced thermal dissipation in power-constrained applications.

Key Features

Applications

Equivalent & Alternatives

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

Compared with INA205AIDGSR and INA203AIDGSR, the INA204AIDGSR offers optimal trade-off between sensitivity and dynamic range for mid-range current measurements (1–5 A), while retaining identical timing, latch, and delay functionality across the family.

Availability

INA204AIDGSR is available at Aetrix Electronics and suitable for telecom power supplies, battery management systems, industrial motor drives, and welding equipment requiring stable component supply and long-term production continuity.

Supply support for INA204AIDGSR 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 product line was designed specifically for high-accuracy, high-common-mode current sensing in power conversion and protection systems, integrating monitoring, comparison, and reference functions into single-chip solutions.

FAQ

What is the maximum common-mode voltage the INA204AIDGSR can handle?

The INA204AIDGSR supports a common-mode input voltage range from –16 V to 80 V. This allows it to perform accurate high-side current sensing in 48-V telecom systems and 60-V automotive battery applications without external level-shifting circuitry. The specification is guaranteed over the full –40°C to 125°C operating temperature range, and the device maintains 100 dB CMRR at 25°C to reject noise from noisy power rails.

How does the CMP2 delay function work on the INA204AIDGSR?

The CMP2 delay on the INA204AIDGSR is implemented using an external capacitor connected to the CMP2 DELAY pin. The delay time tD (in seconds) is calculated as tD = 5 × CDELAY (in µF); for example, a 0.1 µF capacitor yields a 0.5 s delay. This feature prevents false triggering during short-duration current transients while ensuring reliable response to sustained overcurrent conditions. The delay applies to both rising and falling edges of the comparator output.

Does the INA204AIDGSR provide a reference voltage output?

No - the INA204AIDGSR is the 10-pin VSSOP variant and does not include the 1.2-V reference output pin. That feature is exclusive to the 14-pin SOIC and TSSOP packages (e.g., INA204AIDR, INA204AIPWR). The INA204AIDGSR retains internal 0.6-V comparator references but omits the buffered 1.2-V REF OUT terminal to reduce package size and cost for space-constrained designs.

What is the gain error specification for the INA204AIDGSR over temperature?

The INA204AIDGSR exhibits ±2% gain error over the full operating temperature range of –40°C to 125°C. This specification includes contributions from both initial gain tolerance and temperature drift. At 25°C, typical gain error is ±0.2%, and total output error (including offset) is ±2.2% for VSENSE = 120 mV at VS = 16 V. These values are measured under standard test conditions with RL = 10 kΩ to GND and Rpullup = 5.1 kΩ on comparator outputs.

Can the INA204AIDGSR be used for bidirectional current sensing?

No - the INA204AIDGSR is explicitly a unidirectional current-shunt monitor. Its architecture and internal reference structure are optimized for sensing current flow in one direction only (from VIN+ to VIN−). For bidirectional applications, Texas Instruments recommends the INA226 or INA240 families, which feature true zero-input-voltage capability and symmetric output swing around mid-supply. Attempting bidirectional use with the INA204AIDGSR will result in clipped or inaccurate output below ~0.4 V at VS = 5 V.