Texas Instruments LMV344IPWRE4

Overview

LMV344IPWRE4 from Texas Instruments is a quad rail-to-rail output CMOS operational amplifier with shutdown capability, designed for low-voltage (2.7V–5.5V), low-power applications. It delivers 1 MHz gain bandwidth, 1 V/μs slew rate, 0.25 mV typical input offset voltage, 1 pA typical input bias current, and rail-to-rail output swing within 30 mV of supply rails at 10 kΩ load - enabling precision signal conditioning in battery-powered audio preamplifiers and supply-current monitoring circuits.

For engineers reviewing the LMV344IPWRE4 datasheet, LMV344IPWRE4 pinout, LMV344IPWRE4 application, or LMV344IPWRE4 equivalent, key selection criteria include shutdown current (33 nA typ. at 5 V), extended industrial temperature range (–40°C to 125°C), TSSOP-14 package footprint compatibility, and verified rail-to-rail input common-mode range (to GND and up to V+ – 0.2 V).

Technical Context

The LMV344IPWRE4 integrates four independent CMOS-input op-amp channels sharing a single shutdown control (SHDN) pin that places all amplifiers into high-impedance output and sub-100 nA supply current mode. Its PMOS input stage enables ground-sensing operation and ultra-low input bias current, while the CMOS output stage supports rail-to-rail swing with <60 mV headroom at 2 kΩ load.

It operates across 2.5 V to 5.5 V single-supply voltage, with guaranteed performance over –40°C to 125°C. Input common-mode range extends from –0.2 V to V+ – 0.2 V (min.), and output swing remains within 30 mV of both rails under 10 kΩ load - critical for accurate buffering and filtering in space-constrained portable systems.

Key Specifications

Pinout & Package

Packaged in a 14-pin TSSOP (PW), the LMV344IPWRE4 measures 5.00 mm × 4.40 mm with 0.65 mm pitch, optimized for compact PCB layouts in portable electronics.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV2464IDR and LMV944MAX/NOPB, the LMV344IPWRE4 uniquely combines quad-channel count, integrated shutdown, sub-100 nA shutdown current, and guaranteed rail-to-rail output at 2.7 V - making it the only option among the three for battery-powered systems requiring periodic wake-up with zero-quiescent leakage.

Availability

LMV344IPWRE4 is available at Aetrix Electronics and suitable for portable medical devices, battery management systems, voice-enabled IoT endpoints, and industrial sensor nodes requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for LMV344IPWRE4 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 LMV34x product line was engineered for ultra-low-power, rail-to-rail signal conditioning in space- and energy-constrained portable systems - emphasizing precision, shutdown efficiency, and robustness across –40°C to 125°C.

FAQ

What is the maximum operating supply voltage for LMV344IPWRE4?

The absolute maximum supply voltage for LMV344IPWRE4 is 5.5 V. Operation above this level risks permanent damage. The recommended operating range is 2.5 V to 5.5 V, with full electrical specifications guaranteed from 2.7 V to 5 V per the datasheet. At 5.5 V, thermal limits and reliability margins decrease - design margin should maintain V+ ≤ 5.0 V for continuous operation in industrial environments.

Does LMV344IPWRE4 support true rail-to-rail input?

LMV344IPWRE4 supports rail-to-rail *output*, but its input common-mode range extends from –0.2 V to V+ – 0.2 V (min.), meaning it includes ground but does not reach the positive rail. This is enabled by its PMOS input stage. For applications requiring input beyond V+ – 0.2 V, external level-shifting or a different amplifier family (e.g., TLV9064) is required. The LMV344IPWRE4 input stage is optimized for low bias current, not full rail-to-rail input.

How does the shutdown function work on LMV344IPWRE4?

The LMV344IPWRE4 uses an active-low SHDN pin (Pin 5). When pulled to GND (≤0.2 V), all four amplifiers enter shutdown: supply current drops to 33 nA (typ. at 5 V), and outputs go high-impedance. When pulled to V+ (≥4.5 V at 5 V supply), normal operation resumes with 5 μs typical turn-on time. The pin has no internal pull-up; external logic or microcontroller GPIO must drive it directly. No external components are needed for basic shutdown control.

Can LMV344IPWRE4 drive a 600 Ω load?

LMV344IPWRE4 is not specified for continuous 600 Ω loads. Its output short-circuit current is 85 mA (sourcing) and 50 mA (sinking) at 5 V, but sustained 600 Ω loading at rail-to-rail swing causes thermal stress and violates SOA limits. Datasheet test conditions for output swing specify RL ≥ 2 kΩ. For 600 Ω applications (e.g., line drivers), use a buffer stage or select a higher-output-current amplifier such as OPA4340 or THS4031 - the LMV344IPWRE4 is intended for high-impedance destinations like ADC inputs or filter stages.

Is LMV344IPWRE4 pin-compatible with other TSSOP-14 quad op-amps?

No - LMV344IPWRE4 has a unique pinout optimized for its shutdown functionality and channel layout (e.g., SHDN on Pin 5, GND on Pin 11). It is not pin-compatible with standard TSSOP-14 quad op-amps like TLV2464 or LM324 variants. PCB layout must follow Figure 4-3 in the SLOS447J datasheet. Substitution requires schematic and layout revision; functional equivalence does not imply mechanical compatibility.