Texas Instruments LM324BIPWR

Overview

LM324BIPWR from Texas Instruments is a quadruple operational amplifier in 14-pin TSSOP package, designed for cost-sensitive industrial and consumer applications. It delivers rail-to-rail input (V– to V+ – 1.5V), ±3 mV max input offset voltage at 25°C, 1.2 MHz gain-bandwidth product, and operates from 3V to 36V single-supply or ±18V dual-supply - enabling use in power supply monitoring, sensor signal conditioning, and motor control feedback loops.

For engineers reviewing the LM324BIPWR datasheet, LM324BIPWR pinout, LM324BIPWR application, or LM324BIPWR equivalent, key selection criteria include its 240 µA per-amplifier quiescent current, integrated EMI/RF filtering, 2 kV HBM ESD rating, common-mode input range extending to V–, and drop-in compatibility with legacy LM324/LM2902 families.

Technical Context

The LM324BIPWR implements a standard voltage-feedback op-amp architecture with unity-gain stable compensation. Its input stage supports input differential voltages up to the supply rails and common-mode voltage down to V–, enabling true single-supply operation without level-shifting circuitry.

It features an integrated RF/EMI filter on each amplifier input, low input bias current (≤35 nA max across –40°C to +85°C), and output stage capable of sourcing –30 mA / sinking 20 mA - suitable for driving moderate loads such as comparators, transducer interfaces, and analog front-end buffers.

Key Specifications

Pinout & Package

Packaged in 14-pin TSSOP (PW), LM324BIPWR measures 5 mm × 6.4 mm with exposed thermal pad (not electrically connected). Pin numbering follows JEDEC MS-012 standard, top-view orientation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LM324DR, LM324BIPWR reduces system power by 60% and adds EMI immunity; compared with LM2902BIPWR, it trades 40°C upper-temperature margin for lower cost in commercial-grade applications.

Availability

LM324BIPWR is available at Aetrix Electronics and suitable for power supply monitoring, sensor signal conditioning, and motor control feedback requiring stable component supply and long-term production continuity.

Supply support for LM324BIPWR 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 since 1930.

The LM324B series belongs to TI's precision op-amp portfolio, engineered for cost-sensitive industrial, consumer, and computing applications demanding reliability, low power, and drop-in upgrade paths from legacy designs.

FAQ

What is the maximum operating temperature for LM324BIPWR?

The LM324BIPWR is rated for operation from –40°C to +85°C ambient temperature. This specification is defined in Section 6.3 Recommended Operating Conditions of the official datasheet. Exceeding +85°C may degrade offset voltage drift and output drive capability. For extended-range applications, consider LM2902BIPWR, which supports –40°C to +125°C.

Does LM324BIPWR support single-supply operation?

Yes, LM324BIPWR supports true single-supply operation. Its common-mode input voltage range includes V– (ground), and the output can swing within 20 mV of V– at 1 mA load. This allows direct interfacing with microcontroller ADCs and digital logic without negative supplies or level-shifting circuitry - a key advantage over older op-amps like LM324DR.

Is LM324BIPWR pin-compatible with LM324DR?

Yes, LM324BIPWR is pin-compatible with LM324DR in the same TSSOP-14 footprint. Both share identical pin functions (e.g., Pin 2 = 1IN–, Pin 3 = 1IN+, Pin 4 = VCC+, etc.) and electrical interface requirements. However, LM324BIPWR offers improved specs: ±3 mV vs. ±7 mV offset, 240 µA vs. 1.2 mA total IQ, and integrated EMI filtering - making it a direct performance upgrade.

What decoupling capacitance is recommended for LM324BIPWR?

A minimum 100 nF ceramic capacitor placed within 2 mm of Pin 4 (VCC+) and V– (Pin 11) is recommended per amplifier section. For systems with noisy supplies or high-frequency switching nearby (e.g., adjacent to DC-DC converters), add a parallel 1 µF X7R capacitor. This ensures stable operation and preserves the 1.2 MHz gain-bandwidth product under dynamic load conditions.

Can LM324BIPWR drive capacitive loads?

LM324BIPWR is characterized to drive up to 100 pF capacitive loads without oscillation, as specified in Section 6.5 Electrical Characteristics. For loads exceeding 100 pF (e.g., long cables or large ADC input capacitance), add a 10–100 Ω series resistor between the output and load to maintain phase margin. Avoid direct connection to >1 nF loads without isolation.