Texas Instruments OPA2374AIDCNTG4

Overview

OPA2374AIDCNTG4 from Texas Instruments is a dual-channel, 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, and 585-µA quiescent current per channel, with input offset voltage ≤5 mV (max) and input bias current ≤10 pA (max). It is used in battery-powered sensor signal conditioning and portable A/D converter driving circuits.

For engineers reviewing the OPA2374AIDCNTG4 datasheet, OPA2374AIDCNTG4 pinout, OPA2374AIDCNTG4 application, or OPA2374AIDCNTG4 equivalent, key selection criteria include rail-to-rail I/O swing within 25 mV of rails, operation across –40°C to +125°C, microsize 8-pin SOT-23 packaging, and absence of shutdown functionality-distinguishing it from the OPA2373 family.

Technical Context

The OPA2374AIDCNTG4 implements a complementary differential input stage enabling rail-to-rail common-mode input range from (V−) −0.2 V to (V+) + 0.2 V. Its class AB output stage supports rail-to-rail output swing: typically 18 mV from rails at light loads (100 kΩ) and 100 mV at moderate loads (5 kΩ).

No internal shutdown logic is present-unlike the OPA2373-making it a fixed-operation dual op amp. It is unity-gain stable and specified for supply voltages as low as 2.3 V, supporting ultra-low-voltage portable designs without performance degradation in open-loop gain (≥94 dB) or CMRR (≥80 dB at 25°C).

Key Specifications

Pinout & Package

OPA2374AIDCNTG4 is housed in an 8-pin SOT-23 package (DCN), measuring 2.90 mm × 1.63 mm × 1.10 mm, with exposed thermal pad connected to V− for improved power dissipation.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-channel rail-to-rail op amp applications.

Compared with OPA2374AIDCNTG4, the OPA2374AIDR offers identical electrical performance in a thermally superior SOIC package, while the MCP6022-E/SN trades off temperature range and offset for lower power and higher bandwidth-making it unsuitable as a drop-in replacement in harsh environments.

Availability

OPA2374AIDCNTG4 is available at Aetrix Electronics and suitable for portable medical sensors, battery-powered data loggers, active anti-aliasing filters, and industrial 4–20 mA receiver front-ends requiring stable component supply across automotive and industrial temperature ranges.

Supply support for OPA2374AIDCNTG4 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, with over 50 years of innovation in precision amplifiers and signal chain components.

The OPAx374 family was designed specifically for low-power, rail-to-rail signal conditioning in space- and energy-constrained applications-including portable instrumentation, battery-operated sensors, and industrial process monitoring systems.

FAQ

What is the maximum supply voltage for the OPA2374AIDCNTG4?

The OPA2374AIDCNTG4 has an absolute maximum supply voltage of 7 V, but its recommended operating range is 2.3 V to 5.5 V. Operation above 5.5 V risks permanent damage and invalidates parametric guarantees. The device is fully characterized at 2.7 V and 5.5 V, with performance maintained down to 2.3 V for ultra-low-power applications.

Does the OPA2374AIDCNTG4 include a shutdown feature?

No, the OPA2374AIDCNTG4 does not include a shutdown feature. Unlike the pin-compatible OPA2373 family, this device operates continuously when powered. The absence of enable/disable logic simplifies biasing and eliminates turn-on/turn-off transients-making it ideal for always-on sensor interfaces where power cycling is unnecessary.

What is the typical output voltage swing for the OPA2374AIDCNTG4 at 3.3-V supply?

At a 3.3-V supply and with a 100-kΩ load, the OPA2374AIDCNTG4 typically swings within 18 mV of each rail (i.e., 0.018 V to 3.282 V). With a 5-kΩ load, the swing degrades to within 100 mV (0.1 V to 3.2 V). This rail-to-rail capability ensures >95% of the 3.3-V ADC input range is usable, minimizing quantization loss in precision measurement systems.

Can the OPA2374AIDCNTG4 drive a 1000-pF capacitive load?

The OPA2374AIDCNTG4 is not guaranteed stable with 1000-pF loads in unity-gain configuration. Its datasheet specifies stable operation with ≤250 pF pure capacitance at G = +1. For heavier loads, external isolation (e.g., 10-Ω series resistor) or increased closed-loop gain (G ≥ 10) is required. Uncompensated 1000-pF loading may cause overshoot, ringing, or oscillation in the OPA2374AIDCNTG4 output.

How does the input common-mode range of the OPA2374AIDCNTG4 compare to standard CMOS op amps?

The OPA2374AIDCNTG4 extends its input common-mode range 200 mV beyond both supply rails (V− −0.2 V to V+ +0.2 V), exceeding most standard CMOS op amps that only reach the rails. This is achieved via a complementary N/P-channel input stage. As a result, the OPA2374AIDCNTG4 can accurately buffer signals at 0 V or V_CC without clipping-critical for single-supply systems interfacing with ground-referenced sensors or DAC outputs.