Texas Instruments OPA4374AIDR

Overview

OPA4374AIDR from Texas Instruments is a quad rail-to-rail input/output CMOS operational amplifier optimized for low-power, single-supply operation (2.3 V to 5.5 V). It delivers 6.5 MHz gain-bandwidth, 5 V/µs slew rate, 585 µA quiescent current per channel, and 5 mV max input offset voltage - enabling precision signal conditioning in battery-powered instrumentation and portable A/D converter drivers.

For engineers reviewing the OPA4374AIDR datasheet, OPA4374AIDR pinout, OPA4374AIDR application, or OPA4374AIDR equivalent, key selection considerations include its 14-pin SOIC/TSSOP package, rail-to-rail I/O swing within 25 mV of rails, operation across –40°C to +125°C, and absence of shutdown functionality (distinguishing it from OPAx373 family variants).

Technical Context

The OPA4374AIDR integrates four independent high-speed CMOS op amps with complementary N- and P-channel input stages, enabling rail-to-rail input common-mode range from (V−) −0.2 V to (V+) + 0.2 V. Its class AB output stage supports rail-to-rail output swing under light loads (≤100 kΩ), with typical output voltage swing of 18 mV from rails at 25°C.

Designed for unity-gain stability, it achieves 6.5 MHz GBW and 5 V/µs slew rate while maintaining low input bias current (±10 pA max) and low noise (15 nV/√Hz at 10 kHz). It operates over full industrial temperature range (–40°C to +125°C) and supports supply voltages as low as 2.3 V - critical for energy-constrained sensor front-ends and portable medical devices.

Key Specifications

Pinout & Package

OPA4374AIDR is available in 14-pin SOIC (D) package (8.65 mm × 3.91 mm) and 14-pin TSSOP (PW) package (5.00 mm × 4.40 mm). Both packages share identical pin numbering and function mapping.

Key Features

Applications

Equivalent & Alternatives

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

Compared with OPA4374AIDR, OPA4377AIDR trades higher power for superior DC accuracy and bandwidth, while TLV2464CDR offers lower cost at the expense of rail-to-rail input capability and tighter offset control - making OPA4374AIDR the optimal balance for general-purpose, low-voltage, quad-channel signal conditioning.

Availability

OPA4374AIDR is available at Aetrix Electronics and suitable for portable medical sensors, battery-powered data loggers, and industrial PLC analog input modules requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for OPA4374AIDR 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 delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.

The OPAx374 family was designed specifically for low-power, rail-to-rail precision amplification in space- and energy-constrained applications - emphasizing unity-gain stability, wide supply range, and robust operation from –40°C to +125°C.

FAQ

What is the maximum operating supply voltage for OPA4374AIDR?

The absolute maximum supply voltage for OPA4374AIDR is 7 V, but the recommended operating range is 2.3 V to 5.5 V. Operation above 5.5 V risks permanent damage, while operation below 2.3 V may cause degraded AC performance and increased input offset voltage. The OPA4374AIDR is fully specified and tested at 2.7 V to 5.5 V, with guaranteed functionality across the full –40°C to +125°C temperature range within this window.

Does OPA4374AIDR include a shutdown feature?

No, OPA4374AIDR does not include a shutdown feature. Unlike the OPAx373 family (e.g., OPA4373), the OPAx374 family - including OPA4374AIDR - lacks enable/disable control pins. All four amplifiers operate continuously when powered. For applications requiring power gating, external MOSFET-based supply switching or discrete logic-controlled biasing must be implemented - but note that OPA4374AIDR itself has no internal shutdown circuitry or associated timing specifications (tON/tOFF).

What is the output voltage swing specification for OPA4374AIDR at 5 V supply?

At VS = 5 V and TA = 25°C with RL = 100 kΩ, OPA4374AIDR delivers an output voltage swing within 18 mV of each rail (i.e., 0.018 V to 4.982 V). Under heavier load (RL = 5 kΩ), the swing degrades to within 100 mV of rails (0.1 V to 4.9 V). At full temperature range (–40°C to +125°C), worst-case swing is 25 mV from rails (light load) or 125 mV (5 kΩ load). This rail-to-rail output behavior is maintained across all four channels simultaneously.

Can OPA4374AIDR drive capacitive loads without external compensation?

Yes, OPA4374AIDR is unity-gain stable and can drive up to 250 pF of pure capacitive load without oscillation or excessive overshoot. For loads exceeding 250 pF - such as ADC input capacitance combined with PCB trace capacitance - a small isolation resistor (10 Ω to 20 Ω) placed between the OPA4374AIDR output and the capacitive node restores stability. This technique is validated in TI's SBOS279F datasheet Figure 17 and avoids the need for complex compensation networks in data acquisition front-ends.

How does the input common-mode range of OPA4374AIDR compare to standard op amps?

OPA4374AIDR features an extended rail-to-rail input common-mode range from (V−) −0.2 V to (V+) + 0.2 V - meaning it accepts input signals 200 mV beyond both supply rails. This exceeds standard op amps (typically limited to V− to V+), enabling direct interface with sensors whose output may transiently exceed the supply (e.g., piezoelectric elements or transformer-coupled signals). Inputs beyond the common-mode range but within absolute max ratings (±0.5 V beyond rails) are safe if current-limited to ≤10 mA.