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

STMicroelectronics LM2904WYPT

Name: LM2904WYPT
Brand: STMicroelectronics
SKU: LM2904WYPT
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: LM2904WYPT

Manufacturer:: STMicroelectronics

Category:: Instrumentation, Op Amps, Buffer Amps

Package:: 8-TSSOP (0.173", 4.40mm Width)

Datasheet:: LM2904WYPT.pdf

Description:: IC OPAMP GP 2 CIRCUIT 8TSSOP

Quantity:: RFQ Add To RFQ list

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Inventory:3,685

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Product details

Overview

LM2904WYPT from STMicroelectronics is a dual, low-power operational amplifier designed for automotive-grade single-supply operation. It delivers 100 dB DC voltage gain, 1.1 MHz unity-gain bandwidth, and rail-to-rail output swing (0 V to V_CC − 1.5 V) with only 500 µA per channel supply current. It supports −40 °C to +125 °C operation and features input common-mode range extending to the negative rail - enabling direct interfacing with sensors and transducers in vehicle control modules.

For engineers reviewing the LM2904WYPT datasheet, LM2904WYPT pinout, LM2904WYPT application, or LM2904WYPT equivalent, key selection criteria include its AEC-Q100 qualified TSSOP8 package, temperature-compensated input bias current (20 nA), ESD robustness (2 kV HBM), and compatibility with 3–30 V single supplies in safety-critical analog signal conditioning.

Technical Context

The LM2904WYPT integrates two independent high-gain op-amps with internal frequency compensation, eliminating external compensation components. Its input stage uses PNP transistors enabling common-mode voltage down to the negative rail and differential input range equal to the full supply voltage.

It operates linearly with inputs at ground and outputs capable of swinging to 0 V - critical for single-supply sensor amplification. The device maintains stable performance across automotive temperature extremes due to on-die temperature compensation of input offset voltage (7 µV/°C drift), bias current, and common-mode rejection (min. 60 dB).

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage Range	3 V to 30 V - enables direct use with 5 V logic rails or 12/24 V automotive systems without regulation.
DC Voltage Gain	100 dB - provides ≥100,000× open-loop gain for precision DC amplification and stable closed-loop configurations.
Unity-Gain Bandwidth	1.1 MHz - supports audio-frequency and low-speed control loop applications (e.g., throttle position feedback).
Input Bias Current	20 nA (typ., −40 °C to +125 °C) - ensures minimal error in high-impedance sensor interfaces like thermistors or piezoelectric elements.
Output Swing	0 V to (V_CC − 1.5 V) - delivers near-rail output drive into 2 kΩ loads, simplifying level-shifting in ADC front-ends.
ESD Protection	2 kV HBM - meets automotive board-level ESD immunity requirements without external protection diodes.
Operating Temperature	−40 °C to +125 °C - qualified per AEC-Q100 Grade 1 for under-hood and powertrain control units.

Pinout & Package

TSSOP8 (Thin Shrink Small Outline Package), 3.1 mm × 6.6 mm body, 0.65 mm pitch, lead-free and RoHS-compliant per ECOPACK® specifications.

Pin/Terminal	Circuit Role	Design Meaning
1	Inverting Input Channel A	Accepts inverted-phase signal for standard inverting amplifier configuration; referenced to ground in single-supply mode.
2	Non-inverting Input Channel A	Accepts non-inverted signal; common-mode range includes 0 V, enabling direct connection to grounded sensors.
3	Output Channel A	Delivers amplified output; swings from 0 V to V_CC − 1.5 V into 2 kΩ load - suitable for driving ADC reference buffers.
4	V_CC− (Ground)	Negative supply terminal; serves as circuit reference and return path - must be connected to system ground in single-supply use.
5	V_CC+	Positive supply input; accepts 3–30 V; supply current (1.2 mA max, both channels) is independent of voltage magnitude.
6	Output Channel B	Independent second amplifier output; identical specs to Pin 3 - enables dual-sensor conditioning or differential pair implementation.
7	Inverting Input Channel B	Second inverting input; electrically isolated from Channel A - allows simultaneous processing of two analog signals.
8	Non-inverting Input Channel B	Second non-inverting input; supports common-mode input down to ground - used in dual transducer amplifier designs.

Key Features

Feature	Design Value
Internal Frequency Compensation	Eliminates need for external compensation capacitors - reduces BOM count and PCB area in space-constrained ECUs.
Rail-to-Rail Input Common-Mode Range	Includes negative rail (0 V) - enables direct interface with grounded-output sensors (e.g., RTDs, strain gauges) without level-shifting circuitry.
Low Supply Current	500 µA per channel - extends battery life in always-on automotive modules such as door control or occupancy detection.
Automotive Qualification	AEC-Q100 Grade 1 certified - validated for reliability in harsh environments including thermal cycling, humidity, and vibration per automotive standards.
ESD Robustness	2 kV HBM - protects against handling and assembly ESD events, reducing field failure risk in production lines.

Applications

Engine Coolant Temperature Sensing

Brake Fluid Pressure Monitoring

Use Scenario: Amplifies low-level voltage from NTC thermistor in engine coolant loop, conditioned for 12-bit ADC input.

IC Role / Device Role / Timing Role: Dual-channel DC gain block - Channel A buffers thermistor voltage; Channel B implements offset correction or reference scaling.

Use Value: Input common-mode range to 0 V eliminates need for negative supply or bias resistors; 20 nA input bias prevents thermistor self-heating error.

Use Scenario: Interfaces piezoresistive pressure sensor in brake master cylinder, providing ratiometric output to microcontroller ADC.

IC Role / Device Role / Timing Role: Single-supply instrumentation amplifier front-end - configured as non-inverting gain stage with matched resistor network.

Use Value: 100 dB gain ensures <1 mV offset error; 1.1 MHz bandwidth rejects PWM noise from adjacent solenoid drivers.

Body Control Module Window Lift

Electric Power Steering Torque Feedback

Use Scenario: Conditions Hall-effect position sensor output for window motor direction and stall detection in door module.

IC Role / Device Role / Timing Role: Transducer amplifier - Channel A amplifies sensor sine wave; Channel B filters and compares zero-crossing for commutation timing.

Use Value: 500 µA/channel supply current minimizes quiescent drain on 12 V battery; −40 °C to +125 °C rating covers cabin temperature extremes.

Use Scenario: Amplifies torque sensor bridge output in EPS column module, feeding closed-loop motor control algorithm.

IC Role / Device Role / Timing Role: Precision DC gain block - configured as differential amplifier with 100 V/V gain to resolve sub-mV bridge signals.

Use Value: 7 µV/°C input offset drift limits temperature-induced torque error to <0.5% FS over operating range.

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual low-power op-amp applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
LM2904DT	SO-8 package, commercial temperature range (−40 °C to +105 °C), no AEC-Q100 qualification	Suitable for non-automotive industrial controls where extended temperature and automotive reliability are not required	Select when cost sensitivity outweighs automotive qualification needs and SO-8 footprint is preferred.
TSV912IYDT	Higher GBW (8 MHz), lower input offset (1.5 mV typ.), but higher supply current (820 µA/ch) and no AEC-Q100 Grade 1 rating	Better for higher-speed signal paths (e.g., active filter design), but less optimal for ultra-low-power always-on modules	Choose when bandwidth >1 MHz is mandatory and system power budget allows +320 µA/channel overhead.

Compared with LM2904DT, LM2904WYPT adds AEC-Q100 qualification and extended high-temp operation at the cost of TSSOP8 assembly complexity; versus TSV912IYDT, it trades bandwidth and offset for guaranteed automotive reliability and 38% lower quiescent current - making it optimal for cost-sensitive, thermally demanding ECU analog front-ends.

Availability

LM2904WYPT is available at Aetrix Electronics and suitable for engine control units, brake system electronics, and body control modules requiring stable component supply across automotive production lifecycles.

Supply support for LM2904WYPT 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 LM2904W series belongs to ST's automotive-qualified precision analog portfolio, engineered specifically for robust, low-power signal conditioning in safety-critical vehicle subsystems operating under extreme thermal and electrical stress.

FAQ

What is the maximum supply voltage for LM2904WYPT?

The absolute maximum supply voltage is +32 V, but the recommended operating range is 3 V to 30 V. Operation above 30 V risks exceeding safe power dissipation limits, especially at high ambient temperatures. The device's supply current remains stable across this range, enabling consistent performance in 12 V and 24 V automotive systems without regulation.

Does LM2904WYPT support true rail-to-rail output?

No - LM2904WYPT provides output swing from 0 V to (V_CC − 1.5 V) into a 2 kΩ load. It achieves ground-referenced output (rail-to-rail on the low side) but cannot reach V_CC on the high side. This is sufficient for interfacing with most 12-bit ADCs with 2.5 V or 3.3 V references, as the 1.5 V headroom avoids clipping in typical gain configurations.

Can LM2904WYPT drive capacitive loads directly?

Yes, but with limitations: stability is maintained up to 100 pF with proper layout and decoupling. Figure 17 in the datasheet shows phase margin degradation beyond this value. For loads >100 pF (e.g., long cables or LCD bias networks), a series resistor (≥100 Ω) between output and capacitance is required to prevent oscillation - confirmed by SPICE simulation using the provided macromodel.

Is LM2904WYPT pin-compatible with LM2904DR

No - LM2904WYPT uses TSSOP8 (0.65 mm pitch), while LM2904DR uses SO-8 (1.27 mm pitch). Though both have identical pin functions (1–8 mapping), their footprints, thermal characteristics, and reflow profiles differ. Direct PCB replacement requires layout revision; however, schematic-level substitution is valid if mechanical and thermal constraints are reassessed.

LM2904WYPT Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: 8-TSSOP (0.173", 4.40mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Active

Amplifier Type:: General Purpose

Number of Circuits:: 2

Output Type:: Single-Ended

Slew Rate:: 0.6V/µs

Gain Bandwidth Product:: 1.1 MHz

-3db Bandwidth:: -

Current - Input Bias:: 20 nA

Voltage - Input Offset:: 2 mV

Current - Supply:: 700µA

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:: 8-TSSOP

LM2904WYPT FAQ

1.How can I place an order for LM2904WYPT through Aetrix?

Please submit a Request for Quotation (RFQ) for LM2904WYPT 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 LM2904WYPT reliable?

The price and inventory of LM2904WYPT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2904WYPT is usually 5 days.

3.What payment methods are accepted for LM2904WYPT?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2904WYPT transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for LM2904WYPT?

LM2904WYPT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your LM2904WYPT 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 LM2904WYPT?

For technical support, including LM2904WYPT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2904WYPT requirements.

6.How does Aetrix verify that LM2904WYPT is sourced from the original manufacturer or authorized distributors?

All LM2904WYPT 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 LM2904WYPT meets industry standards.

7.What is the process for return or replacement of LM2904WYPT?

All LM2904WYPT units undergo pre-shipment inspection (PSI). If there is an issue with LM2904WYPT, 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 LM2904WYPT part is unused and in its original packaging.

Return procedure for LM2904WYPT:

1.Submit a request within 90 days.

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

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