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

STMicroelectronics LM2904AWYPT

Name: LM2904AWYPT
Brand: STMicroelectronics
SKU: LM2904AWYPT
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: LM2904AWYPT

Manufacturer:: STMicroelectronics

Category:: Instrumentation, Op Amps, Buffer Amps

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

Datasheet:: LM2904AWYPT.pdf

Description:: IC OPAMP GP 2 CIRCUIT 8TSSOP

Quantity:: RFQ Add To RFQ list

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Inventory:3,643

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Product details

Overview

LM2904AWYPT from STMicroelectronics is a dual, low-power, automotive-qualified operational amplifier designed for single-supply operation in harsh environments. 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. Used in transducer signal conditioning and DC gain blocks within automotive body control modules.

For engineers reviewing the LM2904AWYPT datasheet, LM2904AWYPT pinout, LM2904AWYPT application, or LM2904AWYPT equivalent, key selection criteria include input offset voltage (1 mV typ), temperature-compensated bias current (20 nA), ESD rating (2 kV HBM), common-mode input range extending to negative rail, and AEC-Q100 qualification for automotive use.

Technical Context

The LM2904AWYPT integrates two independent high-gain op-amps with internal frequency compensation, enabling stable unity-gain operation without external components. Its input stage uses PNP transistors to support common-mode voltage down to the negative rail, and its output stage provides class-AB drive with 40 mA short-circuit current capability.

Designed specifically for automotive systems, it operates across −40 °C to +125 °C with supply voltage from 3 V to 30 V. Supply current remains constant over this full voltage range, and input offset voltage drift is specified at 7 µV/°C (typ), supporting precision DC-coupled sensing in engine control units and battery management interfaces.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage Range	3 V to 30 V - supports direct connection to 5 V logic rails and 24 V automotive batteries without regulation.
Input Offset Voltage	1 mV (typ) at 25 °C - enables accurate DC amplification of low-level sensor signals (e.g., thermistor, pressure bridge).
Large-Signal Voltage Gain	100 V/mV (min) - ensures stable closed-loop performance with ≥60 dB loop gain at 1 kHz in gain-of-10 configurations.
Unity-Gain Bandwidth	1.1 MHz (typ) - sufficient for anti-aliasing filtering and audio-band signal conditioning up to ~100 kHz.
Supply Current per Channel	500 µA (typ) - allows dual-op-amp functionality in power-constrained nodes like door module microcontrollers.
Input Bias Current	20 nA (typ, temp-compensated) - minimizes voltage error across high-impedance feedback networks (>1 MΩ).
ESD Protection	2 kV HBM - meets automotive system-level robustness requirements for assembly and field operation.

Pinout & Package

TSSOP8 package: 3 mm × 4.4 mm, 0.65 mm pitch, thin-profile surface-mount package qualified for automotive reflow profiles and board space-constrained ECUs.

Pin/Terminal	Circuit Role	Design Meaning
1	Inverting Input A	High-impedance node for feedback path; accepts common-mode voltages from ground to V_CC − 1.5 V.
2	Non-inverting Input A	DC-coupled sensor interface point; supports rail-to-rail input including negative rail (GND).
3	Output A	Class-AB output capable of sourcing/sinking ≥10 mA while swinging 0 V to V_CC − 1.5 V.
4	V_CC− (GND)	Reference return for both amplifiers; shared ground plane required for noise immunity in mixed-signal PCBs.
5	V_CC+	Positive supply input; decoupling capacitor (100 nF) recommended within 5 mm for stability under load transients.
6	Output B	Independent output for second channel; identical drive strength and voltage swing as Output A.
7	Inverting Input B	Dedicated inverting node for second amplifier; electrically isolated from Channel A except via shared supply pins.
8	Non-inverting Input B	Second sensor interface; enables dual-channel differential measurement (e.g., current sense + reference buffer).

Key Features

Feature	Design Value
Internal Frequency Compensation	Enables stable unity-gain operation without external compensation capacitors - reduces BOM count and layout sensitivity.
Rail-to-Rail Input Common-Mode Range	Includes negative rail (GND) - eliminates need for level-shifting circuitry when interfacing with grounded sensors.
Low Input Offset Current	2 nA (max) - preserves accuracy in high-Z photodiode or piezoelectric transducer front-ends.
Automotive Qualification	AEC-Q100 Grade 1 (−40 °C to +125 °C) - validated for under-hood and chassis-mounted applications.
Single-Supply Operation	Operates from 3 V to 30 V - compatible with 5 V microcontroller I/O domains and 24 V vehicle batteries.

Applications

Engine Coolant Temperature Sensing

Body Control Module Window Lift Interface

Use Scenario: Amplifying resistance change from NTC thermistor in coolant line, digitized by 12-bit ADC.

IC Role / Device Role / Timing Role: Precision DC gain block with 1 mV offset and 20 nA bias current minimizing error in 10 kΩ sensor network.

Use Value: Enables ±1 °C temperature resolution over −40 °C to +130 °C range without calibration trimming.

Use Scenario: Monitoring motor current during window lift/down to detect obstruction via analog current sense.

IC Role / Device Role / Timing Role: High-side current sense amplifier with rail-to-rail input accepting 0–5 V shunt voltage.

Use Value: Delivers 40 mA short-circuit output drive to interface directly with comparator input, eliminating external buffer.

Automotive Seat Position Feedback

12 V Battery Voltage Monitor

Use Scenario: Conditioning potentiometer wiper voltage (0–12 V) for seat position detection in memory seat systems.

IC Role / Device Role / Timing Role: Non-inverting unity-gain buffer isolating high-impedance pot from ADC input loading.

Use Value: 500 µA/channel supply current extends sleep-mode battery life in parked vehicle scenarios.

Use Scenario: Scaling 12 V battery voltage to 0–3.3 V range for microcontroller ADC input with overvoltage protection.

IC Role / Device Role / Timing Role: Inverting attenuator with precision resistor ratio and 100 dB CMRR rejecting alternator ripple.

Use Value: Maintains <1% measurement error across 9–16 V battery range and −40 °C to +125 °C ambient.

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	Industrial grade (−40 °C to +105 °C), same electrical specs but no AEC-Q100 validation.	Not qualified for under-hood or safety-critical modules; suitable for cabin infotainment power supplies.	Select when automotive qualification is not required and cost optimization is prioritized.
TSV912IDT	Higher GBW (8 MHz), lower offset (1.5 mV), but higher supply current (880 µA/ch) and no AEC-Q100 certification.	Better for higher-frequency signal paths (e.g., CAN bus filtering), but unsuitable for long-term automotive deployment.	Choose only for non-automotive designs needing faster response and tighter DC accuracy.

Compared with LM2904DT and TSV912IDT, the LM2904AWYPT uniquely combines AEC-Q100 Grade 1 qualification, 500 µA/channel quiescent current, and rail-to-rail input operation - making it the only option qualified for permanent installation in engine bay and chassis control units requiring long-term reliability.

Availability

LM2904AWYPT is available at Aetrix Electronics and suitable for automotive body control units, battery management systems, and engine control interface circuits requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for LM2904AWYPT 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, specializing in automotive, industrial, and power management ICs with vertical manufacturing and AEC-Q100-aligned quality systems.

The LM2904AWYPT belongs to ST's automotive-qualified precision analog portfolio, engineered specifically for signal conditioning in harsh-environment vehicle subsystems where reliability, temperature stability, and ESD robustness are mandatory.

FAQ

What is the maximum operating junction temperature for LM2904AWYPT?

The LM2904AWYPT has a maximum junction temperature of 150 °C, validated under AEC-Q100 stress testing. Its thermal resistance junction-to-ambient is 120 °C/W in TSSOP8 packaging, meaning at 500 µA per channel and 12 V supply, typical power dissipation is ~6 mW - resulting in negligible self-heating even in sealed enclosures at +125 °C ambient.

Does LM2904AWYPT support true rail-to-rail output swing?

No - the LM2904AWYPT outputs swing from 0 V to (V_CC − 1.5 V) under load. At light loads (<1 mA), it reaches within 20 mV of GND and V_CC − 1.5 V, but cannot drive to the positive rail. This is sufficient for interfacing with 3.3 V or 5 V ADC references when powered from 5 V or 12 V supplies respectively.

Can LM2904AWYPT be used in dual-supply configurations?

Yes - although optimized for single-supply use, it operates with split supplies (e.g., ±15 V) as long as total supply voltage stays within 3 V to 30 V and common-mode input range (−0.3 V to V_CC + 0.3 V) is respected. The input stage's PNP architecture ensures correct biasing even with negative V_CC−.

How does the internal frequency compensation affect stability in capacitive-load applications?

The internal compensation ensures unity-gain stability with ≤100 pF capacitive load, as verified in Figure 17 of the datasheet. For loads >100 pF (e.g., long PCB traces), a series resistor (≥10 Ω) between output and load is required to maintain phase margin >45°, preventing oscillation in motor driver feedback loops or sensor cable interfaces.

LM2904AWYPT 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:: 1 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

LM2904AWYPT FAQ

1.How can I place an order for LM2904AWYPT through Aetrix?

Please submit a Request for Quotation (RFQ) for LM2904AWYPT 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 LM2904AWYPT reliable?

The price and inventory of LM2904AWYPT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2904AWYPT is usually 5 days.

3.What payment methods are accepted for LM2904AWYPT?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2904AWYPT transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for LM2904AWYPT?

LM2904AWYPT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your LM2904AWYPT 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 LM2904AWYPT?

For technical support, including LM2904AWYPT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2904AWYPT requirements.

6.How does Aetrix verify that LM2904AWYPT is sourced from the original manufacturer or authorized distributors?

All LM2904AWYPT 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 LM2904AWYPT meets industry standards.

7.What is the process for return or replacement of LM2904AWYPT?

All LM2904AWYPT units undergo pre-shipment inspection (PSI). If there is an issue with LM2904AWYPT, 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 LM2904AWYPT part is unused and in its original packaging.

Return procedure for LM2904AWYPT:

1.Submit a request within 90 days.

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

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