Texas Instruments LMV324IDRG4

Overview

LMV324IDRG4 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, ground-sensing input common-mode range, and operates across –40°C to 125°C - enabling use in battery-powered sensor interfaces and industrial signal conditioning.

For engineers reviewing the LMV324IDRG4 datasheet, LMV324IDRG4 pinout, LMV324IDRG4 application, or LMV324IDRG4 equivalent, key selection criteria include its SOIC-14 package footprint, guaranteed rail-to-rail output drive into 10 kΩ loads, input offset voltage ≤7 mV at 25°C, and compatibility with legacy LM324-based designs requiring lower supply voltage and reduced power.

Technical Context

The LMV324IDRG4 implements a CMOS input stage with complementary bipolar output transistors to achieve rail-to-rail output swing while maintaining stable operation with capacitive loads up to 1000 pF. Its input stage supports common-mode voltages down to ground (0 V), eliminating level-shifting requirements in single-supply systems.

It operates as four independent high-gain DC-coupled amplifiers, each with differential input and single-ended output. No internal compensation is required; stability is ensured across 10 kΩ–600 Ω resistive loads and up to 1 nF capacitive loads without external compensation networks.

Key Specifications

Pinout & Package

LMV324IDRG4 is housed in a 14-pin SOIC package (8.65 mm × 3.91 mm body size), surface-mount compatible with standard reflow profiles and IPC-7351B land patterns.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LM324DR and TLV2464CDR, LMV324IDRG4 offers optimal balance of rail-to-rail output, ultra-low supply voltage support (2.7 V), and industry-standard SOIC-14 footprint - making it the preferred choice for space-constrained, battery-powered, and 3.3 V embedded systems requiring four matched amplifiers.

Availability

LMV324IDRG4 is available at Aetrix Electronics and suitable for desktop PC thermal monitoring, HVAC control systems, and motor control feedback circuits requiring stable component supply, long-term lifecycle assurance, and TI-authorized traceability.

Supply support for LMV324IDRG4 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 company headquartered in Dallas, Texas, specializing in analog and embedded processing technologies with over 90 years of innovation in power management, signal chain, and microcontrollers.

The LMV3xx product line was designed specifically for cost-sensitive, low-voltage (2.7–5.5 V) applications demanding rail-to-rail output performance, small footprint, and extended temperature operation - targeting consumer electronics, industrial automation, and automotive subsystems.

FAQ

What is the maximum capacitive load the LMV324IDRG4 can drive without oscillation?

The LMV324IDRG4 remains stable with capacitive loads up to 1000 pF when driving a 10 kΩ resistive load, as verified in Figure 7 of the SLOS263W datasheet. For loads >100 pF, adding a 10 Ω series resistor between the output and capacitive node improves phase margin without degrading DC accuracy. This capability enables direct interface with ADC input capacitors and long cable runs in sensor systems.

Does the LMV324IDRG4 support true single-supply operation with input signals at ground potential?

Yes, the LMV324IDRG4 supports true single-supply operation with input common-mode voltage extending to 0 V (ground). Its input stage is designed to maintain ≥50 dB CMRR down to ground, allowing direct connection of 0–3.3 V sensor outputs (e.g., thermistors, bridge transducers) without external biasing networks - a key advantage over older op-amps like LM324.

What is the typical input offset voltage drift over temperature for LMV324IDRG4?

The LMV324IDRG4 has an average input offset voltage temperature coefficient (αVIO) of 5 μV/°C, as specified in Section 7.5 of the datasheet. This means offset changes by approximately ±0.6 mV across a –40°C to +125°C range, ensuring predictable calibration behavior in automotive and industrial environments where ambient temperature varies widely.

Can LMV324IDRG4 replace LM324 in existing designs without layout changes?

Yes, LMV324IDRG4 is pin-compatible with LM324DR in the SOIC-14 package and shares identical pinout and footprint. However, due to its rail-to-rail output and lower supply voltage minimum (2.7 V vs. 3 V), users must verify that existing 5 V designs do not rely on LM324's higher output headroom - LMV324IDRG4 delivers full rail-to-rail swing, which may require minor gain recalibration in some feedback networks.

What is the short-circuit output current capability of LMV324IDRG4?

The LMV324IDRG4 can source up to 60 mA and sink up to 160 mA per amplifier under short-circuit conditions at 25°C (Section 7.6, IOS parameter). This robust output drive supports direct connection to LEDs, relays, and MOSFET gates without external buffers - though continuous short-circuit operation is limited by thermal dissipation in the SOIC-14 package.