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

STMicroelectronics LM2902WYDT

Name: LM2902WYDT
Brand: STMicroelectronics
SKU: LM2902WYDT
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: LM2902WYDT

Manufacturer:: STMicroelectronics

Category:: Instrumentation, Op Amps, Buffer Amps

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

Datasheet:: LM2902WYDT.pdf

Description:: IC OPAMP GP 4 CIRCUIT 14SO

Quantity:: RFQ Add To RFQ list

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Product details

Overview

LM2902WYDT from STMicroelectronics is a low-power quad operational amplifier in SO-14 package, designed for automotive-grade signal conditioning in single-supply systems. It delivers 1.3 MHz gain bandwidth, 100 dB large-signal voltage gain, and rail-to-rail input common-mode range down to the negative rail - enabling direct interfacing with sensors and microcontrollers operating at 3 V to 30 V supply. Its 375 µA per amplifier quiescent current and ±40 °C to +125 °C operation support battery-powered and under-hood automotive applications.

For engineers reviewing the LM2902WYDT datasheet, LM2902WYDT pinout, LM2902WYDT application, or LM2902WYDT equivalent, key selection criteria include input offset voltage drift (7–30 µV/°C), ESD robustness (800 V HBM), output sink/source capability (20 mA typical), and dual-supply compatibility (±1.5 V to ±15 V) - all critical for precision analog front-ends in harsh environments.

Technical Context

The LM2902WYDT integrates four independent op-amps with internal frequency compensation optimized for unity-gain stability across its full 3 V–30 V single-supply range. Its PNP-input stage enables true input common-mode operation down to V_CC−, while the NPN parasitic action ensures safe recovery from input overdrive beyond −0.3 V without latch-up.

Each amplifier features matched input bias currents (20 nA typ.), low input offset current (2 nA), and high channel separation (120 dB at 1–20 kHz), supporting multi-channel signal processing where crosstalk must be minimized - such as in sensor fusion modules or multi-axis motor control feedback paths.

Key Specifications

Parameter	Value and Actual Design Meaning
Gain bandwidth product	1.3 MHz - supports stable closed-loop gain up to ~100× at 10 kHz for anti-aliasing or active filtering.
Input common-mode range	V_CC− to (V_CC+ − 1.5 V) - allows direct connection of ground-referenced sensors without level-shifting.
Large-signal voltage gain	100 dB (typ.) - provides ≥100,000× open-loop gain for high-precision DC amplification (e.g., strain gauge bridges).
Supply current per amplifier	375 µA (typ. at 25°C, 5 V) - enables four-channel analog signal conditioning in sub-2 mA total system budget.
Input offset voltage	2–7 mV (25°C), ≤9 mV (−40°C to +125°C) - defines minimum resolvable differential input in DC-coupled configurations.
ESD protection	800 V HBM - meets automotive component-level ESD immunity requirements per ISO 10605.
Slew rate	0.24–0.4 V/µs - limits maximum undistorted sinusoidal output frequency to ~38 kHz at 10 Vpp.

Pinout & Package

LM2902WYDT is supplied in SO-14 (Small Outline) package, 1.27 mm pitch, with exposed pad not connected. Pin numbering follows standard top-view orientation with pin 1 marked by notch or dot.

Pin/Terminal	Circuit Role	Design Meaning
1	Inverting input (Amp A)	Accepts inverted-phase signal; high-impedance node requiring guarded routing in precision layouts.
2	Non-inverting input (Amp A)	Accepts non-inverted signal; common-mode range extends to V_CC−, enabling ground-referenced inputs.
3	Output (Amp A)	Capable of sourcing/sinking ≥20 mA; requires local decoupling when driving capacitive loads >100 pF.
4	V_CC− (Ground / Negative rail)	Reference return for all four amplifiers; must be low-impedance path to minimize PSRR degradation.
5	Inverting input (Amp B)	Independent input stage; electrically isolated from Amp A except via shared supply rails.
6	Non-inverting input (Amp B)	Same input structure as Pin 2; supports identical common-mode and bias current specs.
7	Output (Amp B)	Output stage matches Pin 3; channel separation >120 dB prevents crosstalk in multi-channel filters.
8	V_CC+ (Positive supply)	Single-supply input (3–30 V) or positive rail in split-supply mode (±1.5 V to ±15 V).
9	Inverting input (Amp C)	Third amplifier input; layout symmetry recommended to match thermal drift with Amps A/B.
10	Non-inverting input (Amp C)	Matches Pin 2/6 behavior; input bias current drift ≤200 pA/°C affects long-term DC stability.
11	Output (Amp C)	Supports same load conditions as Pins 3/7; thermal coupling with adjacent outputs affects max power dissipation.
12	Inverting input (Amp D)	Fourth amplifier input; pinout symmetry enables identical PCB routing for all four channels.
13	Non-inverting input (Amp D)	Final input node; shares same ESD protection diode network (800 V HBM) as all inputs.
14	Output (Amp D)	Full-output swing to within 20 mV of V_CC− and 26 V of V_CC+ at 30 V supply - usable for rail-to-rail sensing.

Key Features

Feature	Design Value
Rail-to-rail input common-mode range	Enables direct interface with 0 V–5 V sensors (e.g., thermistors, potentiometers) without external level shifters.
Low quiescent current (375 µA per amp)	Permits four-channel signal conditioning in always-on automotive modules with <1.5 mA total supply draw.
Automotive-grade qualification (AEC-Q100)	Validated for operation from −40 °C to +125 °C with enhanced screening per AEC-Q001/Q002.
High channel separation (120 dB)	Minimizes inter-channel interference in multi-sensor data acquisition (e.g., brake pressure + wheel speed + temperature).
Internal frequency compensation	Guarantees unity-gain stability without external compensation components - simplifies PCB layout and BOM.

Applications

Automotive Cabin Temperature Control

Industrial 4–20 mA Loop Receiver

Use Scenario: Amplifying output of NTC thermistor networks in HVAC control units, operating continuously at 12 V battery supply with ambient temperatures from −40 °C to +85 °C.

IC Role / Device Role / Timing Role: Quad op-amp configured as precision instrumentation amplifier (Amp A/B/C/D) to reject common-mode noise on long sensor harnesses while providing 100× gain and low-drift DC output.

Use Value: Input offset voltage drift ≤30 µV/°C ensures <±0.5 °C measurement error over full cabin temperature range without recalibration.

Use Scenario: Converting 4–20 mA process current signals from PLCs into 0–5 V analog inputs for industrial microcontrollers in factory automation systems.

IC Role / Device Role / Timing Role: Single amplifier (Amp A) used as transimpedance converter with 250 Ω precision shunt; remaining three amps condition auxiliary signals (voltage monitoring, fault detection, reference buffering).

Use Value: 375 µA per amplifier current draw enables integration into space-constrained DIN-rail I/O modules with no forced-air cooling required.

Smart Rearview Mirror Sensor Hub

Automotive Battery Monitoring Unit

Use Scenario: Aggregating analog outputs from ambient light, glare, and humidity sensors inside rearview mirrors for adaptive dimming and fog detection algorithms.

IC Role / Device Role / Timing Role: Four independent amplifiers each conditioned one sensor signal: two for differential light sensing, one for humidity bridge, one for reference voltage buffering.

Use Value: 120 dB channel separation prevents optical sensor noise from corrupting humidity readings during rapid light transitions.

Use Scenario: Measuring cell voltages and pack current in 12 V lead-acid or LiFePO₄ starter batteries, operating under engine cranking (6.5 V) and alternator charging (14.8 V) conditions.

IC Role / Device Role / Timing Role: Quad amplifier implements precision voltage dividers (Amp A/B), current-sense amplifier (Amp C), and comparator reference buffer (Amp D) - all powered from unregulated battery rail.

Use Value: Input common-mode range extending to V_CC− allows direct connection to shunt resistors grounded at battery negative terminal without level-shifting circuitry.

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad op-amp applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
LM2902DT	Standard industrial grade (−40 °C to +105 °C); lacks AEC-Q100 qualification and automotive screening.	Not approved for under-hood or safety-critical vehicle subsystems; suitable for non-automotive industrial controls.	Select when cost sensitivity outweighs automotive qualification requirements and temperature range is limited to ≤+105 °C.
TSV914IPT	Higher GBW (8 MHz), lower V_os (1.5 mV max), but higher I_Q (800 µA/amp) and narrower V_CC range (2.7–5.5 V).	Optimized for low-voltage, high-speed applications (e.g., audio preamps); incompatible with 12 V/24 V automotive rails.	Choose only for battery-powered portable devices requiring faster response and tighter DC accuracy at 3.3 V operation.

Compared with LM2902DT, LM2902WYDT adds AEC-Q100 compliance and extended high-temp operation (+125 °C), while TSV914IPT trades supply flexibility and power efficiency for speed and offset precision - making LM2902WYDT the sole choice for robust, wide-supply automotive analog signal chains.

Availability

LM2902WYDT is available at Aetrix Electronics and suitable for automotive cabin control, industrial loop receivers, smart mirror sensor hubs, and battery monitoring units requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for LM2902WYDT 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 analog, microcontroller, power, and sensor solutions for automotive, industrial, and consumer markets.

The LM2902WYDT belongs to ST's automotive-qualified operational amplifier product line, engineered specifically for reliable signal conditioning in harsh-temperature, high-reliability vehicle subsystems - including body electronics, powertrain interfaces, and ADAS sensor preprocessing stages.

FAQ

What is the maximum operating junction temperature for LM2902WYDT?

The LM2902WYDT is rated for operation from −40 °C to +125 °C ambient temperature. With SO-14 package thermal resistance R_thJA = 105 °C/W, maximum junction temperature reaches 155 °C at 1.5 mA total supply current and 25 °C board temperature - within absolute maximum rating of 150 °C only if board-level thermal design reduces effective R_thJA below 100 °C/W.

Does LM2902WYDT support rail-to-rail output swing?

No - LM2902WYDT provides rail-to-rail *input* common-mode range but not rail-to-rail output. At 30 V supply, output swings from 26 V (high) to 20 mV (low); at 5 V supply, it swings from 3.5 V to 5 mV. Output headroom is typically 1.5–2 V from V_CC+ and 20–50 mV above V_CC−, depending on load current.

Can LM2902WYDT drive capacitive loads directly?

Yes, but with limitations: stable operation is confirmed for ≤100 pF with 2 kΩ load (per Figure 22). Driving >100 pF requires series isolation resistor (≥100 Ω) between output and capacitance to maintain phase margin >30° - critical for active filter or ADC driver applications where ringing must be avoided.

Is there a pin-compatible upgrade path for higher precision?

No direct pin-compatible upgrade exists within ST's portfolio. The LM2902AWYDT offers improved input offset voltage (≤4 mV over temperature) but identical pinout and electrical behavior otherwise. For significantly better DC performance (e.g., <100 µV V_os), redesign with TSZ124IPT (quad zero-drift op-amp) is required - though it uses TSSOP-14 and has different supply range (1.8–5.5 V).

LM2902WYDT Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

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

Packaging:: Tape & Reel (TR)

Product Status:: Active

Amplifier Type:: General Purpose

Number of Circuits:: 4

Output Type:: Push-Pull

Slew Rate:: 0.4V/µs

Gain Bandwidth Product:: 1.3 MHz

-3db Bandwidth:: -

Current - Input Bias:: 20 nA

Voltage - Input Offset:: 2 mV

Current - Supply:: 1.5mA (x4 Channels)

Current - Output / Channel:: 40 mA

Voltage - Supply Span (Min):: 3 V

Voltage - Supply Span (Max):: 30 V

Operating Temperature:: -40°C ~ 125°C

Grade:: Automotive

Qualification:: AEC-Q100

Mounting Type:: Surface Mount

Supplier Device Package:: 14-SO

LM2902WYDT FAQ

1.How can I place an order for LM2902WYDT through Aetrix?

Please submit a Request for Quotation (RFQ) for LM2902WYDT 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 LM2902WYDT reliable?

The price and inventory of LM2902WYDT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2902WYDT is usually 5 days.

3.What payment methods are accepted for LM2902WYDT?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2902WYDT transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for LM2902WYDT?

LM2902WYDT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your LM2902WYDT 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 LM2902WYDT?

For technical support, including LM2902WYDT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2902WYDT requirements.

6.How does Aetrix verify that LM2902WYDT is sourced from the original manufacturer or authorized distributors?

All LM2902WYDT 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 LM2902WYDT meets industry standards.

7.What is the process for return or replacement of LM2902WYDT?

All LM2902WYDT units undergo pre-shipment inspection (PSI). If there is an issue with LM2902WYDT, 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 LM2902WYDT part is unused and in its original packaging.

Return procedure for LM2902WYDT:

1.Submit a request within 90 days.

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

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