Texas Instruments LMV324ID

Overview

LMV324ID from Texas Instruments is a quad rail-to-rail output operational amplifier optimized for low-voltage (2.7 V to 5.5 V) single-supply operation, delivering 1 MHz unity-gain bandwidth, 1 V/μs slew rate, and 410 μA typical supply current per amplifier. It features rail-to-rail output swing, no crossover distortion, and operates across –40°C to 125°C - widely used in motor control feedback loops, HVAC sensor signal conditioning, and portable media player audio stages.

For engineers reviewing the LMV324ID datasheet, LMV324ID pinout, LMV324ID application, or LMV324ID equivalent, key selection criteria include its guaranteed rail-to-rail output drive into 10 kΩ at 2.7 V, input offset voltage ≤7 mV (typ), common-mode input range extending to ground, ESD protection exceeding 2000-V HBM, and SOIC-14 package compatibility with legacy LM324 layouts.

Technical Context

The LMV324ID implements a CMOS input stage with rail-to-rail output stage using complementary bipolar transistors, enabling full-swing operation from V– (GND) to V+ (up to 5.5 V). Its internal architecture supports stable unity-gain configuration with ≥60° phase margin at 2 kΩ load and 0–100 pF capacitive loading.

It operates as a true single-supply op amp: input common-mode range includes ground (0 V), output swings within 180 mV of rails at 10 kΩ load (VCC = 5 V), and maintains 50 dB minimum CMRR over 0–4 V input range. No external compensation is required for standard gain configurations.

Key Specifications

Pinout & Package

LMV324ID is supplied in a 14-pin SOIC package (8.65 mm × 3.91 mm body size), compatible with industry-standard LM324 footprints and reflow profiles.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LM324DR and TLV2464CDR, LMV324ID uniquely balances ultra-low-voltage operation (2.7 V), rail-to-rail output, and sub-500-μA/amp current - making it optimal for space-constrained, battery-sensitive applications where 7-mV offset is acceptable.

Availability

LMV324ID is available at Aetrix Electronics and suitable for motor control feedback, HVAC sensor interface, and portable media player audio requiring stable component supply and long-term production continuity.

Supply support for LMV324ID 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 over 90 years of innovation in precision analog ICs.

The LMV3xx product line was engineered for cost-sensitive, low-voltage embedded systems - delivering rail-to-rail output, wide temperature range, and drop-in compatibility with legacy LM324 designs while reducing power and board space.

FAQ

What is the maximum operating supply voltage for LMV324ID?

The LMV324ID has an absolute maximum supply voltage rating of 5.5 V. Operation beyond this voltage risks permanent damage. The recommended operating range is 2.7 V to 5.5 V, with full electrical specifications guaranteed across this span per TI SLOS263W Rev W. At 5.5 V, output swing remains within 200 mV of rails under 10 kΩ load, preserving signal fidelity.

Does LMV324ID support true single-supply operation with input signals at ground potential?

Yes, LMV324ID supports true single-supply operation with inputs referenced to GND. Its common-mode input voltage range extends from –0.2 V to (VCC – 1.0 V), explicitly including 0 V across the full temperature range (–40°C to 125°C). This enables direct connection to grounded sensors like thermistors or bridge outputs without level-shifting circuitry.

What is the typical input offset voltage of LMV324ID and how does it affect precision applications?

The typical input offset voltage of LMV324ID is 7 mV at 25°C, with a maximum of 9 mV over the full temperature range. In a non-inverting gain-of-10 configuration, this introduces up to ±90 mV of DC error at the output. For applications requiring <±1 mV error, external trimming or selection of a lower-VIO alternative like TLV2464CDR is recommended.

Can LMV324ID drive capacitive loads without instability?

LMV324ID is stable driving resistive loads up to 10 kΩ and capacitive loads up to 100 pF without external compensation, as confirmed by TI's stability testing in SLOS263W Figure 6. For loads >100 pF (e.g., long cables or ADC input capacitance), a series resistor (≥100 Ω) between amplifier output and load is required to maintain ≥45° phase margin and prevent ringing.

Is LMV324ID pin-compatible with standard LM324 devices?

Yes, LMV324ID uses the same SOIC-14 pinout as LM324DR and LM324N, enabling direct PCB footprint replacement. However, LMV324ID offers rail-to-rail output swing and lower supply current (410 μA vs 1.4 mA per amp), while LM324 requires ≥3 V supply and cannot swing closer than 1.5 V to either rail. No layout changes are needed, but verify supply voltage compatibility.