Texas Instruments INA4180A1IPWR

Overview

INA4180A1IPWR from Texas Instruments is a quad-channel, high-precision current-sense amplifier with 20 V/V fixed gain, –0.2 V to +26 V common-mode input range, 350 kHz bandwidth, ±150 µV max offset at 0 V CM, and 2 V/µs slew rate-designed for bidirectional current monitoring in motor control, battery management, and solar inverter power stages.

For engineers reviewing the INA4180A1IPWR datasheet, INA4180A1IPWR pinout, INA4180A1IPWR application, or INA4180A1IPWR equivalent, this device delivers stable gain accuracy (±1% max), low temperature drift (1 µV/°C), and rail-to-rail output swing under 2.7–5.5 V supply-critical for real-time overcurrent detection and closed-loop current regulation in industrial and renewable energy systems.

Technical Context

The INA4180A1IPWR integrates four matched-resistor gain networks (20 V/V) to minimize gain error and reduce thermal drift across channels. Its input stage operates independently of supply voltage, enabling accurate sensing at common-mode voltages up to 26 V-even when powered by only 2.7 V.

All four channels share a single 2.7–5.5 V supply and operate over –40°C to +125°C. Each channel features independent IN+ and IN– inputs, analog output, and supports both low-side and high-side configurations without external components.

Key Specifications

Pinout & Package

The INA4180A1IPWR is housed in a 14-pin TSSOP (PW) package measuring 5.00 mm × 4.40 mm, optimized for thermal performance (R_θJA = 115.9 °C/W) and PCB space efficiency in multi-channel power monitoring layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with INA4180A2IPWR and INA2290AIRGTR, the INA4180A1IPWR offers the lowest gain option in the family for maximum flexibility with mid-range shunt values, while retaining full analog performance and pin compatibility across the INA4180 series-making it ideal for cost-sensitive, high-channel-count analog current monitoring.

Availability

INA4180A1IPWR is available at Aetrix Electronics and suitable for motor control, battery monitoring, and solar inverter applications requiring stable component supply, long-term production continuity, and guaranteed traceable sourcing.

Supply support for INA4180A1IPWR 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 INA4180 belongs to TI's INAx180 current-sense amplifier family, engineered for cost-optimized, high-accuracy current monitoring in industrial, automotive, and renewable energy systems where reliability across extended temperature ranges is essential.

FAQ

What is the maximum common-mode voltage the INA4180A1IPWR can handle?

The INA4180A1IPWR supports a common-mode input voltage range of –0.2 V to +26 V. This allows it to accurately sense current on high-side 24-V bus rails or low-side configurations with negative transients, independent of its 2.7–5.5 V supply voltage. Absolute maximum ratings permit brief exposure up to 26 V, with recommended operation capped at 26 V per datasheet Section 7.3.

Does the INA4180A1IPWR require external gain-setting resistors?

No, the INA4180A1IPWR does not require external gain-setting resistors. It integrates a precision-matched internal resistor network configured for 20 V/V fixed gain. This eliminates resistor tolerance errors, reduces PCB area, and improves thermal tracking across temperature-key advantages over discrete op-amp current-sense solutions.

How many independent current-sense channels does the INA4180A1IPWR provide?

The INA4180A1IPWR provides four fully independent current-sense channels in a single 14-pin TSSOP package. Each channel has dedicated IN+, IN–, and OUT pins, enabling simultaneous monitoring of four separate current paths-such as three motor phases plus DC-link current or four battery cell strings-without crosstalk.

What is the typical quiescent current consumption of the INA4180A1IPWR?

The INA4180A1IPWR draws a maximum quiescent current of 900 µA at 25°C and 1000 µA over the full –40°C to +125°C operating range. At nominal conditions (TA = 25°C, VS = 5 V, VSENSE = 10 mV), typical IQ is 690 µA-enabling always-on current monitoring in power-constrained applications like portable test equipment or battery-backed systems.

Can the INA4180A1IPWR be used in high-side and low-side sensing configurations?

Yes, the INA4180A1IPWR supports both high-side and low-side current sensing. Its wide –0.2 V to +26 V common-mode input range allows connection to either side of the sense resistor: for high-side, IN+ connects to the bus and IN– to the load; for low-side, IN+ connects to the load and IN– to ground-no configuration change or external circuitry required.