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Home > Products > Integrated Circuits (ICs) > Linear > Instrumentation, Op Amps, Buffer Amps

STMicroelectronics LM2902D

Name: LM2902D
Brand: STMicroelectronics
SKU: LM2902D
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: LM2902D

Manufacturer:: STMicroelectronics

Category:: Instrumentation, Op Amps, Buffer Amps

Package:: 14-SOIC (0.154", 3.90mm Width)

Datasheet:: LM2902D.pdf

Description:: IC OPAMP GP 4 CIRCUIT 14SO

Quantity:: RFQ Add To RFQ list

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Inventory:1,110

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Product details

Overview

LM2902D from STMicroelectronics is a low-power quad operational amplifier designed for automotive and industrial control systems, featuring 1.3 MHz gain bandwidth, 100 dB large-signal voltage gain, ±1.5 V to ±15 V dual-supply or 3 V to 30 V single-supply operation, input common-mode range extending to the negative rail, and 375 µA per amplifier supply current. It supports precision DC-coupled amplification in engine control units and sensor signal conditioning.

For engineers reviewing the LM2902D datasheet, LM2902D pinout, LM2902D application, or LM2902D equivalent, key selection criteria include input offset voltage drift (7–30 µV/°C), output short-circuit current (20–70 mA), common-mode rejection ratio (60–80 dB), and thermal resistance (105 °C/W for SO14) under extended temperature operation (–40 °C to +125 °C).

Technical Context

The LM2902D integrates four independent internally compensated op amps with PNP-input transistors enabling rail-to-rail common-mode input down to the negative supply. Its architecture delivers stable unity-gain performance with 0.4 V/µs slew rate and 1.3 MHz GBP across full supply and temperature ranges.

It operates reliably from single 3 V supplies up to 30 V or dual ±1.5 V to ±15 V, with input bias current as low as 20 nA (typ.) and output stage capable of sourcing/sinking ≥20 mA while maintaining specified VOH/VOL over –40 °C to +125 °C.

Key Specifications

Parameter	Value and Actual Design Meaning
Gain bandwidth product	1.3 MHz - enables stable closed-loop operation up to ~100 kHz at gain = 10
Large-signal voltage gain	100 dB (typ.) - provides ≥10⁵ open-loop gain for <100 µV input error in high-precision DC amplifiers
Input offset voltage	2–7 mV (25 °C), up to 9 mV (–40 to +125 °C) - sets minimum resolvable differential signal in sensor front-ends
Supply current per amplifier	375 µA (typ.) - allows four-channel operation at <1.5 mA total, suitable for battery-powered modules
Common-mode input range	Includes negative rail - permits direct interfacing with ground-referenced sensors without level-shifting circuitry
Output short-circuit current	20–70 mA - sustains robust drive into 100 Ω loads or fault-tolerant feedback networks
Slew rate	0.4 V/µs - supports clean 10 kHz sine wave amplification at 4 Vpp without distortion

Pinout & Package

LM2902D is packaged in SO14 (Small Outline, 14-pin), with 1.27 mm pitch, 8.65 mm × 3.90 mm body, and 1.40 mm height. The exposed pad is not present in SO14; thermal resistance junction-to-ambient is 105 °C/W.

Pin/Terminal	Circuit Role	Design Meaning
1	Inverting input (Amp 1)	Accepts feedback signal in inverting configurations; referenced to internal PNP input stage
2	Non-inverting input (Amp 1)	Direct connection point for reference or sensor signals; supports common-mode down to VCC−
3	Output (Amp 1)	Class-AB output stage capable of sourcing/sinking ≥20 mA into resistive loads
4	VCC− (negative supply or ground)	Reference node for all four amplifiers; must be low-impedance for stability
5	Non-inverting input (Amp 2)	Independent input for second channel; electrically isolated from other inputs
6	Inverting input (Amp 2)	Feedback node for Amp 2; shares no internal coupling with Amp 1 pins
7	Output (Amp 2)	Separate output driver; channel separation >120 dB prevents crosstalk in multi-channel filters
8	VCC+ (positive supply)	Power rail for all amplifiers; accepts 3–30 V single or ±1.5–±15 V dual supply
9	Output (Amp 3)	Third independent output; identical electrical specs to Amp 1/2 outputs
10	Inverting input (Amp 3)	High-impedance input (20 nA bias current); requires guarding in high-Z sensor interfaces
11	Non-inverting input (Amp 3)	Supports rail-to-rail common-mode; usable with 0 V referenced thermistor bridges
12	Non-inverting input (Amp 4)	Fourth channel input; layout symmetry recommended to minimize inter-channel mismatch
13	Inverting input (Amp 4)	Matches Amp 1–3 input characteristics; offset drift tracked within 30 µV/°C max
14	Output (Amp 4)	Final output; validated for continuous short-circuit to VCC+ with thermal foldback

Key Features

Feature	Design Value
Rail-to-rail input common-mode range	Extends to VCC−, eliminating need for external level shifters when interfacing with grounded sensors
Low input bias current (20 nA typ.)	Enables high-impedance source compatibility (e.g., pH electrodes, piezoelectric sensors) without significant DC error
Wide supply range (3–30 V single / ±1.5–±15 V dual)	Permits reuse across 5 V microcontroller systems and 24 V industrial PLC I/O modules
Automotive-grade qualification (AEC-Q100)	Validated for operation at –40 °C to +125 °C with lifetime reliability in engine bay environments
Internal frequency compensation	Guarantees unity-gain stability without external components, reducing BOM count in cost-sensitive designs

Applications

Engine Control Unit Signal Conditioning

Industrial Temperature Sensor Interface

Use Scenario: Amplifying low-level output from NTC thermistors and Hall-effect crankshaft position sensors in ECU analog front-end.

IC Role / Device Role / Timing Role: Quad op amp configured as precision non-inverting amplifier (Ch1), differential amplifier (Ch2), active low-pass filter (Ch3), and comparator hysteresis generator (Ch4).

Use Value: Input common-mode range to VCC− enables direct connection to grounded sensor elements; 100 dB gain ensures <10 µV resolution on 12-bit ADC inputs.

Use Scenario: Signal conditioning for 4–20 mA loop-powered RTD transmitters in factory automation systems.

IC Role / Device Role / Timing Role: Ch1–Ch2 form Kelvin-connected RTD excitation and differential sensing; Ch3 buffers 4–20 mA DAC output; Ch4 drives LED status indicator.

Use Value: 375 µA per amplifier minimizes self-heating in sealed enclosures; ±15 V dual supply supports 24 V loop compliance margin.

Automotive Cabin Climate Control

Medical Patient Monitor Front-End

Use Scenario: Processing cabin air temperature, humidity, and CO₂ sensor outputs in HVAC control module.

IC Role / Device Role / Timing Role: Ch1–Ch3 condition analog outputs from capacitive humidity and NDIR CO₂ sensors; Ch4 implements window comparator for fan speed staging.

Use Value: AEC-Q100 qualification ensures reliability over 15-year vehicle life; 1.3 MHz GBP supports fast response to rapid cabin temperature changes.

Use Scenario: Biopotential signal amplification (ECG, EMG) in portable patient monitors with battery backup.

IC Role / Device Role / Timing Role: Ch1–Ch2 form high-Z instrumentation amplifier; Ch3 implements right-leg drive; Ch4 filters 50/60 Hz interference.

Use Value: 20 nA input bias current prevents electrode polarization errors; low 40 nV/√Hz noise preserves microvolt-level bio-signals.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
LM324DT	Higher input offset voltage (3–7 mV vs. 2–7 mV), same SO14 package, non-automotive grade	Lacks AEC-Q100 qualification; unsuitable for under-hood automotive use	Select LM324DT only for cost-sensitive industrial prototypes where extended temperature validation is not required
TSV914IDT	Higher GBP (8 MHz), lower input noise (14 nV/√Hz), but narrower supply range (2.7–5.5 V)	Optimized for low-voltage portable electronics; incompatible with 12/24 V industrial rails	Choose TSV914IDT for battery-powered medical devices needing higher bandwidth, not for 24 V automotive systems

Compared with LM324DT, LM2902D offers tighter offset drift and automotive qualification; versus TSV914IDT, it trades bandwidth for wide-supply flexibility and ruggedness-making it optimal for 3–30 V, –40 °C to +125 °C industrial and automotive signal chains.

Availability

LM2902D is available at Aetrix Electronics and suitable for automotive engine control units, industrial temperature transmitters, HVAC climate modules, and medical patient monitor front-ends requiring stable component supply across extended temperature and long-lifecycle programs.

Supply support for LM2902D 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

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, power ICs, sensors, and analog components for automotive, industrial, and consumer markets.

The LM2902 product line delivers low-power, high-reliability quad op amps optimized for harsh-environment signal conditioning in automotive ECUs and industrial control systems.

FAQ

What is the maximum operating junction temperature for LM2902D?

The absolute maximum junction temperature is 150 °C, with rated operation from –40 °C to +125 °C ambient. Thermal resistance junction-to-ambient is 105 °C/W for the SO14 package, meaning at 1.5 mA total supply current and 25 °C ambient, junction temperature rise is ~158 °C - requiring derating or heatsinking above 25 °C ambient in high-power layouts.

Can LM2902D operate with a single 3.3 V supply?

Yes, LM2902D is fully specified for single-supply operation from 3 V to 30 V. At 3.3 V, output swing is typically 0.02 V to 3.28 V (VOL/VOL), input common-mode range extends to 0 V, and gain bandwidth remains 1.3 MHz - making it suitable for interfacing with 3.3 V microcontrollers and low-voltage sensors.

Does LM2902D have ESD protection, and what levels are specified?

Yes, LM2902D features integrated ESD protection: 370 V HBM (human body model), 150 V MM (machine model), and 1500 V CDM (charged device model). These ratings meet standard industrial handling requirements and eliminate need for external TVS diodes in typical PCB-level ESD scenarios.

How does LM2902D handle input voltages below the negative rail?

When any input is driven below VCC− by more than 0.3 V, the input PNP transistor's collector-base junction becomes forward-biased, clamping current to ~5 mA (DC) or 50 mA (AC, 10% duty). This is non-destructive; normal operation resumes once input rises above –0.3 V relative to VCC−.

LM2902D Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: 14-SOIC (0.154", 3.90mm Width)

Packaging:: Tube

Product Status:: Active

Amplifier Type:: General Purpose

Number of Circuits:: 4

Output Type:: Push-Pull

Slew Rate:: 0.4V/µs

Gain Bandwidth Product:: 1.2 MHz

-3db Bandwidth:: -

Current - Input Bias:: 20 nA

Voltage - Input Offset:: 2 mV

Current - Supply:: 1.5mA (x4 Channels)

Current - Output / Channel:: 30 mA

Voltage - Supply Span (Min):: 3 V

Voltage - Supply Span (Max):: 30 V

Operating Temperature:: -40°C ~ 125°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 14-SO

LM2902D FAQ

1.How can I place an order for LM2902D through Aetrix?

Please submit a Request for Quotation (RFQ) for LM2902D on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for LM2902D reliable?

The price and inventory of LM2902D are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2902D is usually 5 days.

3.What payment methods are accepted for LM2902D?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2902D transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for LM2902D?

LM2902D orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your LM2902D order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for LM2902D?

For technical support, including LM2902D datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2902D requirements.

6.How does Aetrix verify that LM2902D is sourced from the original manufacturer or authorized distributors?

All LM2902D products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that LM2902D meets industry standards.

7.What is the process for return or replacement of LM2902D?

All LM2902D units undergo pre-shipment inspection (PSI). If there is an issue with LM2902D, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The LM2902D part is unused and in its original packaging.

Return procedure for LM2902D:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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