Texas Instruments OPA374AIDR

Overview

OPA374AIDR from Texas Instruments is a single-channel, rail-to-rail input/output CMOS operational amplifier optimized for low-power, precision signal conditioning in battery-powered and portable systems. It delivers 6.5-MHz gain-bandwidth, 5-V/µs slew rate, 585-µA quiescent current, and operates from 2.3 V to 5.5 V single supply - enabling high-fidelity analog front-ends in space-constrained sensor interfaces and data acquisition circuits.

For engineers reviewing the OPA374AIDR datasheet, OPA374AIDR pinout, OPA374AIDR application, or OPA374AIDR equivalent, key selection criteria include its rail-to-rail I/O swing (≤25 mV from rails), 10-pA max input bias current, 5-mV max input offset voltage, operation up to 125°C, and availability in 5-pin SOT-23 package - all critical for low-voltage, low-drift, thermally robust designs.

Technical Context

The OPA374AIDR uses a complementary CMOS input stage enabling rail-to-rail input common-mode range extending 200 mV beyond both supply rails, with no phase inversion even when inputs exceed supplies (with current limiting). Its class AB output stage supports rail-to-rail output swing down to 18 mV from rails under light loads (100 kΩ) and maintains >80 dB CMRR across –40°C to 125°C.

It is unity-gain stable and specified for capacitive loads up to 250 pF in G = +1 configuration. Unlike the OPA373 family, OPA374AIDR lacks shutdown functionality - simplifying control logic but increasing minimum system power consumption to 585 µA per amplifier at 25°C.

Key Specifications

Pinout & Package

OPA374AIDR is packaged in a 5-pin SOT-23 (DBV) with 2.90 mm × 1.60 mm body size and exposed thermal pad (not electrically connected). Pin 1 is marked with a dot; orientation follows standard JEDEC SOT-23 top-view convention.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar operational amplifier applications.

Compared with OPA333AIDBVR and MCP6001T-I/OT, OPA374AIDR uniquely balances 6.5-MHz bandwidth, 585-µA power, rail-to-rail I/O, and 125°C operation - making it optimal for portable, thermally demanding, medium-speed analog signal paths where zero-drift isn't required.

Availability

OPA374AIDR is available at Aetrix Electronics and suitable for portable medical sensors, battery-powered data loggers, active filter stages, and ADC driver circuits requiring stable component supply across industrial and automotive temperature ranges.

Supply support for OPA374AIDR 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 amplifiers and low-power signal chain solutions.

The OPA374AIDR belongs to TI's OPAx374 rail-to-rail CMOS op amp family, designed specifically for high-speed, low-power, wide-temperature applications in portable and industrial electronics.

FAQ

What is the maximum operating temperature for OPA374AIDR?

The OPA374AIDR is fully specified and tested from –40°C to +125°C, with electrical characteristics guaranteed across this extended industrial temperature range. This makes OPA374AIDR suitable for under-hood automotive modules, motor control feedback loops, and outdoor environmental sensors where ambient temperatures exceed standard commercial limits.

Does OPA374AIDR have a shutdown pin?

No, OPA374AIDR does not include a shutdown function. It is a non-shutdown variant of the OPAx374 family. In contrast, the OPA373AIDR offers an Enable pin for reducing quiescent current to <1 µA. For OPA374AIDR, power management must be handled externally via supply switching or system-level sleep modes.

What package type is used for OPA374AIDR?

OPA374AIDR is supplied in a 5-pin SOT-23 (DBV) package measuring 2.90 mm × 1.60 mm. This compact surface-mount package features gull-wing leads and an exposed thermal pad on the underside - though the pad is not electrically connected and may be left floating or grounded for thermal enhancement.

Can OPA374AIDR drive capacitive loads?

Yes, OPA374AIDR is unity-gain stable and can safely drive up to 250 pF in G = +1 configuration. For larger capacitive loads (e.g., ADC inputs or long PCB traces), adding a small isolation resistor (10–20 Ω) between the amplifier output and the load restores phase margin and prevents peaking or oscillation.

What is the input common-mode voltage range of OPA374AIDR?

The input common-mode voltage range of OPA374AIDR extends from (V–) – 0.2 V to (V+) + 0.2 V - i.e., 200 mV beyond both supply rails. This rail-to-rail input capability allows direct interfacing with sensors or DACs operating at the same supply without level-shifting, preserving signal fidelity in low-voltage systems.