Texas Instruments LM324PWRG3

Overview

LM324PWRG3 from Texas Instruments is a quadruple operational amplifier in TSSOP-14 package, designed for cost-sensitive single-supply applications. It delivers rail-to-rail input (V– to V+ – 1.5V), ±3 mV max input offset voltage (25°C), 1.2 MHz gain-bandwidth product, and 240 µA per amplifier quiescent current - enabling precision signal conditioning in power supply monitoring, sensor interfaces, and industrial control loops.

For engineers reviewing the LM324PWRG3 datasheet, LM324PWRG3 pinout, LM324PWRG3 application, or LM324PWRG3 equivalent, key selection criteria include its 3V–36V supply range, common-mode input down to V–, output swing within 1.5V of rails, and integrated EMI/RF filtering for noise-prone environments like AC inverters and multi-function printers.

Technical Context

The LM324PWRG3 implements a B-version quad op-amp architecture with unity-gain stability, internal compensation, and independent amplifier stages sharing only VCC+ and VCC– rails. Its input stage uses PNP differential pairs enabling true V–-referenced common-mode operation, while the output stage employs Class AB push-pull topology supporting ±30 mA short-circuit current and capacitive load drive up to 100 pF.

It operates across –40°C to +85°C ambient temperature, supports single-supply configurations via ground-referenced VCC–, and integrates on-die RF/EMI filters to suppress high-frequency interference without external components - critical for merchant server PSUs and indoor/outdoor HVAC control systems.

Key Specifications

Pinout & Package

TSSOP-14 (PW) package: 5 mm × 6.4 mm body, 0.65 mm lead pitch, exposed thermal pad (not electrically connected), RoHS-compliant, moisture sensitivity level 1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LM324DR and LM2902PWR, the LM324PWRG3 offers optimal balance of EMI resilience, thermal performance in space-constrained TSSOP layouts, and cost efficiency for commercial-grade industrial applications operating up to +85°C.

Availability

LM324PWRG3 is available at Aetrix Electronics and suitable for power supply monitoring, industrial sensor interfaces, multi-function printer analog front ends, and AC inverter feedback loops requiring stable component supply and long-term manufacturability.

Supply support for LM324PWRG3 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 LM324 series belongs to TI's general-purpose op-amp portfolio, engineered for cost-sensitive, high-volume applications demanding reliability, wide supply range, and ease of use across consumer, computing, and industrial segments.

FAQ

What is the maximum supply voltage rating for LM324PWRG3?

The LM324PWRG3 has an absolute maximum supply voltage of 40 V between VCC+ and VCC–, but its recommended operating range is 3 V to 36 V. Operation above 36 V risks exceeding safe power dissipation limits and degrading long-term reliability, especially at elevated temperatures. Designers should verify thermal margins using RθJA = 124.7°C/W for the TSSOP-14 package when operating near 36 V.

Does LM324PWRG3 support true single-supply operation with inputs down to ground?

Yes, LM324PWRG3 supports true single-supply operation: its common-mode input voltage range extends to VCC– (typically ground), allowing direct interfacing with ground-referenced sensors such as thermistors, potentiometers, and current-sense resistors. This eliminates the need for level-shifting circuitry or negative supply rails in 0–5 V or 0–24 V systems.

What is the typical output current capability of each amplifier in LM324PWRG3?

Each amplifier in LM324PWRG3 can source up to –30 mA and sink up to +20 mA under typical conditions (VCC = 15 V). Short-circuit current is ±40 mA to ±60 mA. Output drive remains stable into 10 kΩ loads with <1.5 V headroom from either rail, making it suitable for driving LEDs, small relays, or ADC reference buffers without external transistors.

How does the EMI/RF filtering in LM324PWRG3 improve system-level noise immunity?

The LM324PWRG3 integrates on-die RF and EMI filters that attenuate high-frequency interference (>30 MHz) before it reaches the input stage, reducing susceptibility to radiated emissions from switch-mode power supplies, motor drives, and digital clocks. This eliminates the need for external RC filters or ferrite beads in noise-critical applications like multi-function printers and server PSUs, preserving signal integrity without added BOM cost or board area.

Is LM324PWRG3 pin-compatible with older LM324 variants in TSSOP-14 packages?

Yes, LM324PWRG3 is fully pin-compatible with LM324PWR and LM2902PWR in the TSSOP-14 (PW) package. All share identical pin numbering, electrical connections, and mechanical footprint. The "G3" suffix denotes TI's green packaging standard (lead-free, halogen-free), with no functional or timing differences from non-G3 variants.