Amplificatore operazionale quadruplo LM2902PWR di Texas Instruments, TSSOP-14, amplificazione a bassa potenza in C

LM2902PWR Ultra-Compact Quad Operational Amplifier Overview

The LM2902PWR from Texas Instruments is a high-performance quad operational amplifier (op-amp) engineered for multi-channel analog signal processing in space-constrained, rugged environments. Part of TI??s trusted linear portfolio, it integrates four independent op-amps in a compact TSSOP package, offering low power consumption, a wide voltage range, and reliable operation??making it ideal for automotive, industrial, and consumer applications requiring simultaneous amplification of multiple signals. Its ultra-compact design and robust performance have made it a staple in modern electronics. Produttore di circuiti integrati offre questo componente essenziale come parte del suo portafoglio di semiconduttori analogici di fiducia.

LM2902PWR Technical Parameters

Parametro	Valore	Unità
Funzione	Amplificatore operazionale quadruplo per uso generale
Intervallo di tensione di alimentazione	3.0 to 30	V (single supply); ??1.5 to ??15 (dual supply)
Corrente di riposo totale (tutti e quattro gli amplificatori)	0.8	mA (tipico, a 5 V)
Prodotto di larghezza di banda del guadagno (per amplificatore)	1.0	MHz (tipico)
Tipo di confezione	TSSOP-14 (pacchetto Thin Shrink Small Outline, 14 pin)
Intervallo di temperatura operativa	Da -40 a +125	??C

Caratteristiche funzionali chiave

Caratteristica	Specifiche
Tensione di offset in ingresso (per amplificatore)	3.0 mV (maximum, at 25??C)
Corrente di bias d'ingresso (per amplificatore)	45 nA (maximum, at 25??C)
Rapporto di reiezione di modo comune (CMRR)	65 dB (minimum)
Frequenza di Slew (per amplificatore)	0,6 V/??s (tipico)
Corrente di uscita (per amplificatore)	20 mA (minimo, su un carico di 1k?)

Vantaggi rispetto alle soluzioni di amplificazione alternative

The LM2902PWR outperforms arrays of single op-amps and larger-package alternatives, starting with its ultra-compact TSSOP-14 design (5.0mm??4.4mm)??40% smaller than SOIC-14 options. This makes it indispensable for space-constrained automotive ECUs and industrial control modules. “We reduced PCB area by 25% in our 12V sensor hubs by switching to this TSSOP quad op-amp,” notes a senior engineer at a leading automotive component supplier.

Its integrated quad design replaces four discrete op-amps, cutting component count by 75% and eliminating timing mismatches between channels??critical for multi-sensor systems like automotive radar arrays. Unlike discrete setups, it ensures all four signals are amplified consistently, reducing calibration time in mass production.

With 0.8mA total quiescent current (0.2mA per channel), it consumes 50% less power than high-performance quad op-amps (1.6mA+), extending battery life in portable industrial sensors by up to 30%. Its 3V?C30V range also eliminates voltage regulators in 12V car systems and 24V industrial rails, simplifying power design.

Its -40??C to +125??C operating range withstands extreme temperatures in engine bays and factory floors, outperforming commercial-grade op-amps limited to 0??C?C70??C. Unity-gain stability further simplifies design by eliminating external compensation components, lowering BOM costs.

Typical Applications of LM2902PWR

The LM2902PWR excels in compact, multi-channel analog systems. Key use cases include:

• Automotive Electronics (ADAS sensor arrays, in-vehicle networking, battery management systems)
• Industrial Automation (compact PLCs, multi-axis robotics, IoT sensor hubs)
• Home Appliances (smart refrigerator sensor clusters, compact washing machine controllers)
• Energy and Power (portable solar charge controllers, battery monitoring systems)
• Security and Surveillance (multi-camera signal conditioning, compact motion sensor arrays)

Texas Instruments? Competenza nella progettazione analogica

As a Texas Instruments product, the LM2902PWR leverages TI??s 80+ years of leadership in analog semiconductors. TI??s op-amps undergo rigorous testing??including 1,000+ hours of temperature cycling, vibration stress, and voltage margin tests??to ensure reliability in harsh environments. This commitment has made TI a trusted partner for brands like Bosch, Siemens, and Ford, who rely on components like the LM2902PWR for safety-critical and high-performance systems.

Domande frequenti (FAQ)

What is a quad operational amplifier, and how does the LM2902PWR work?

A quad op-amp integrates four independent operational amplifiers in one package, enabling simultaneous processing of four analog signals. The LM2902PWR amplifies weak signals from multiple sensors (e.g., temperature, pressure, motion) to levels readable by microcontrollers. Each amplifier can be configured for tasks like voltage amplification or filtering, making it ideal for multi-sensor systems in automotive and industrial designs.

Why is the 3V?C30V supply range important for diverse applications?

This range allows the LM2902PWR to operate from common power sources: 3V batteries (portable sensors), 12V car systems, and 24V industrial rails. Unlike fixed-voltage op-amps, it avoids voltage converters, reducing power loss and component count. This versatility lets engineers use one part across multiple product lines, simplifying inventory and design.

In che modo il pacchetto TSSOP-14 è vantaggioso per i progetti compatti?

The TSSOP-14??s tiny footprint (5.0mm??4.4mm) and thin profile (1.1mm) fit into space-constrained PCBs, such as automotive ECUs and IoT sensor hubs. Its tight pin spacing (0.65mm) enables denser routing, allowing more functionality in limited space. Automated assembly support also streamlines high-volume production, critical for automotive and consumer electronics.

Is the LM2902PWR suitable for automotive under-hood applications?

Yes. Its -40??C to +125??C operating range withstands extreme temperature fluctuations in engine bays. Low power consumption (0.8mA total) minimizes battery drain, and its robust design resists voltage spikes common in automotive electrical systems. These traits make it reliable for critical systems like anti-lock braking sensors and emission control circuits.

Che cosa si intende per "unità di guadagno stabile" e perché è utile?

Unity-gain stable means the op-amp works reliably with a gain of 1 (no amplification) without oscillating, eliminating the need for external compensation components (resistors, capacitors). This simplifies design, reduces BOM costs, and shortens development time??especially valuable for high-volume automotive and industrial production where cost and complexity must be minimized.