Texas Instruments LM324 MWA

Overview

LM324 MWA from Texas Instruments is a quadruple operational amplifier IC designed for single- or dual-supply operation across 3 V to 32 V (or ±1.5 V to ±16 V), featuring 0.8 mA typical supply current per amplifier, input offset voltage of 3 mV typical, and rail-to-rail input common-mode range including ground - enabling direct low-side current sensing and sensor signal conditioning in industrial instrumentation and embedded control systems.

For engineers reviewing the LM324 MWA datasheet, LM324 MWA pinout, LM324 MWA application, or LM324 MWA equivalent, this page delivers verified package mapping (SSOP-14), confirmed electrical parameters (slew rate: 0.5 V/μs; unity-gain bandwidth: 1.2 MHz; CMRR: 65–80 dB), real-world use cases in transducer amplification and DC signal conditioning, and two validated alternative parts with documented functional and packaging differences.

Technical Context

The LM324 MWA integrates four independent, internally frequency-compensated op-amps on a single die using bipolar process technology. Each amplifier supports rail-to-rail input operation down to ground and delivers 100 V/mV typical open-loop gain with 1.2 MHz unity-gain bandwidth and 0.5 V/μs slew rate under 5 V to 30 V supply conditions.

It operates over –40°C to +85°C ambient temperature, features 65–80 dB common-mode rejection ratio, 65–100 dB supply-voltage rejection ratio, and maintains stable performance with output sourcing up to 20 mA and sinking up to 40 mA - making it suitable for driving resistive loads and interfacing with analog-to-digital converters in cost-sensitive industrial designs.

Key Specifications

Pinout & Package

LM324 MWA is packaged in a 14-pin SSOP (Shrink Small Outline Package) with body dimensions 5.00 mm × 4.40 mm and maximum height 1.2 mm. Pin 1 is marked by a notch or dot; pin numbering follows standard counter-clockwise orientation when viewing top side.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LM324DR, LM324 MWA offers 25% smaller PCB area and better high-temperature stability in confined enclosures; compared with TLV2464IDR, LM324 MWA supports wider supply voltage flexibility and higher output drive, at the cost of reduced precision and no rail-to-rail output.

Availability

LM324 MWA is available at Aetrix Electronics and suitable for industrial instrumentation, sensor signal conditioning, and embedded analog front-end designs requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for LM324 MWA 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 U.S.-based semiconductor company specializing in analog and embedded processing technologies, with leadership in precision amplifiers, data converters, and power management ICs.

The LM324 MWA belongs to TI's legacy general-purpose op-amp product line, engineered for cost-effective, robust analog signal conditioning in industrial, test equipment, and consumer electronics applications where wide supply range and ground-sensing capability are essential.

FAQ

What is the operating temperature range for LM324 MWA?

The LM324 MWA is rated for operation from –40°C to +85°C ambient temperature. This extended industrial temperature range ensures reliable performance in factory automation controllers, outdoor environmental sensors, and DIN-rail mounted power supplies where thermal cycling and enclosure heating occur. All key electrical parameters - including input offset voltage, CMRR, and output drive - are guaranteed across this full range.

Does LM324 MWA support true rail-to-rail output swing?

No, LM324 MWA does not provide rail-to-rail output swing. Its output typically swings to within 1.5 V of VCC (high side) and 20 mV above GND (low side) under 2 kΩ load. For example, with 5 V supply, output range is approximately 0.02 V to 3.5 V. This limitation is inherent to its bipolar output stage and must be accounted for in gain-setting and reference design - unlike CMOS op-amps such as TLV2464, which achieve true rail-to-rail output.

Can LM324 MWA be used with a single 3.3 V supply?

Yes, LM324 MWA is fully specified down to 3 V single supply, making it compatible with 3.3 V systems. At 3.3 V, the common-mode input range extends from 0 V to 1.8 V, and output swing reaches ~0.02 V to ~1.8 V under light load. However, slew rate drops to ~0.3 V/μs and open-loop gain decreases - verify stability and bandwidth in actual circuit conditions using TI's TINA-TI simulation models for LM324 MWA.

What is the maximum differential input voltage for LM324 MWA?

The absolute maximum differential input voltage for LM324 MWA is ±32 V - equal to the maximum-rated supply voltage. This specification means the device tolerates up to 32 V difference between IN+ and IN− pins without damage, even if the common-mode voltage is outside normal operating range. This robustness is critical in applications like motor phase voltage monitoring or fault detection circuits where transient overvoltages may occur.

Is LM324 MWA pin-compatible with other LM324 variants?

LM324 MWA shares identical pinout with all standard 14-pin LM324 variants (e.g., LM324DR, LM324N, LM324PW), including SOIC, PDIP, TSSOP, and SSOP packages. The SSOP-14 footprint matches JEDEC MO-150, and pin functions - 1OUT, 1IN−, 1IN+, VCC, GND, etc. - are electrically and physically identical. No PCB redesign is needed when substituting LM324 MWA for another 14-pin LM324, provided thermal and mechanical constraints of the SSOP package are met.