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

STMicroelectronics LM2904AHYPT

Name: LM2904AHYPT
Brand: STMicroelectronics
SKU: LM2904AHYPT
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: LM2904AHYPT

Manufacturer:: STMicroelectronics

Category:: Instrumentation, Op Amps, Buffer Amps

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

Datasheet:: LM2904AHYPT.pdf

Description:: IC OPAMP GP 2 CIRCUIT 8TSSOP

Quantity:: RFQ Add To RFQ list

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Product details

Overview

LM2904AHYPT from STMicroelectronics is an AEC-Q100 qualified dual operational amplifier designed for automotive and industrial control systems operating from a single 3–30 V supply. It delivers 100 dB DC voltage gain, 1.1 MHz unity-gain bandwidth (temperature compensated), 20 nA input bias current, rail-to-rail input common-mode range (including negative rail), and output swing from 0 V to (V_CC+ − 1.5 V). It enables transducer amplification and DC gain blocks in 5 V logic-compatible systems without auxiliary supplies.

For engineers reviewing the LM2904AHYPT datasheet, LM2904AHYPT pinout, LM2904AHYPT application, or LM2904AHYPT equivalent, key selection criteria include its AEC-Q100 qualification, single-supply operation down to 3 V, input common-mode range extending to ground, low 1.2 mA max supply current at 30 V, and TSSOP8 wettable-flank package suitability for automated optical inspection (AOI) and solder-joint reliability in automotive PCBs.

Technical Context

This dual op-amp integrates internal frequency compensation and PNP-input transistor pairs enabling input common-mode voltage down to the negative rail (GND in single-supply use) and differential input range equal to full supply voltage. Its architecture supports stable unity-gain operation across −40 °C to +150 °C with no external compensation required.

It features temperature-compensated input bias and offset currents (20 nA I_IB, 2 nA I_IO typ.), high CMRR (70–85 dB) and PSRR (65–100 dB), and robust ESD protection (300 V HBM, 1.5 kV CDM). Output stage provides ±40 mA short-circuit current capability with thermal shutdown protection.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage Range	3 V to 30 V single supply - enables direct interface with 5 V logic rails and wide automotive battery range (9–16 V nominal, up to 30 V transient).
Input Offset Voltage	1–2 mV (25 °C), ≤6 mV (−40 to +150 °C) - ensures <±10 mV error in 10× gain sensor signal conditioning over full automotive temperature range.
Unity-Gain Bandwidth	1.1 MHz (typ., temp-compensated) - supports stable closed-loop operation up to ~100 kHz for DC-coupled sensor front-ends and active filters.
Slew Rate	0.6 V/µs (25 °C), ≥0.2 V/µs (−40 to +150 °C) - sufficient for 100 kHz sine wave output at 10 Vpp without distortion in single-supply configurations.
Output Voltage Swing	0 V to (V_CC+ − 1.5 V) - delivers >3.5 V swing at 5 V supply, enabling direct ADC interfacing without level-shifting.
Input Bias Current	20 nA (25 °C), ≤200 nA (−40 to +150 °C) - minimizes voltage error across high-impedance sensor bridges (>100 kΩ) and thermistor networks.
Common-Mode Input Range	0 V to (V_CC+ − 1.5 V) - allows direct connection of grounded-sensor outputs (e.g., RTD, strain gauge) without input biasing resistors.

Pinout & Package

TSSOP8 package (3.0 × 4.4 mm, 0.65 mm pitch) with wettable flanks for enhanced solder-joint inspection and reliability in automotive applications.

Pin/Terminal	Circuit Role	Design Meaning
1 (OUT1)	Amplifier 1 output	Capable of sourcing/sinking ≥40 mA; swing limited to 0 V to (V_CC+ − 1.5 V); requires no pull-up for open-collector emulation.
2 (IN1−)	Inverting input, Amp 1	High-impedance PNP input node; accepts common-mode voltages down to GND; protected by internal diode clamps.
3 (IN1+)	Non-inverting input, Amp 1	Matches IN1− in bias/offset specs; supports rail-to-rail input; used for high-Z sensor buffering and reference tracking.
4 (GND / V_CC−)	Negative supply / ground reference	Single-supply return path; must be low-impedance; shared between both amplifiers and critical for PSRR performance.
5 (IN2+)	Non-inverting input, Amp 2	Electrically identical to IN1+; enables dual-channel signal processing (e.g., differential pair + reference buffer) on one die.
6 (IN2−)	Inverting input, Amp 2	Matches IN2+ specs; supports independent feedback networks; used in summing, instrumentation, and active filter topologies.
7 (OUT2)	Amplifier 2 output	Functionally identical to OUT1; channel separation >120 dB at 1–20 kHz prevents crosstalk in multi-channel analog front-ends.
8 (V_CC+)	Positive supply	Accepts 3–30 V; supply current (1.2 mA max at 30 V) is supply-voltage-independent - simplifies power budgeting across battery transients.

Key Features

Feature	Design Value
AEC-Q100 Grade 1 qualification	Validated for −40 °C to +125 °C ambient (150 °C junction), including HTOL, TC, and ESD stress - meets automotive electronic control unit (ECU) reliability requirements.
Rail-to-rail input common-mode range	Includes GND (0 V) and extends to (V_CC+ − 1.5 V) - eliminates need for input biasing networks when amplifying grounded sensors (e.g., thermocouples, current-sense shunts).
Temperature-compensated input parameters	I_IB = 20 nA (25 °C), ΔI_IB/ΔT ≤ 1.5 pA/°C; V_IO drift ≤ 40 µV/°C - maintains accuracy in engine bay and under-hood environments.
Internal frequency compensation	Stable unity-gain operation without external capacitors - reduces BOM count and layout sensitivity in cost-sensitive automotive modules.
Wettable flank TSSOP8 package	Exposed flank geometry enables automated optical inspection (AOI) of solder fillets - improves manufacturing yield and field-reliability traceability in Tier-1 production.

Applications

Automotive Cabin Temperature Sensing

Industrial 4–20 mA Loop Receiver

Use Scenario: Amplifying output of NTC thermistor network mounted near HVAC ducts, operating from 5 V microcontroller rail.

IC Role / Device Role / Timing Role: Dual op-amp configured as precision non-inverting amplifier (Amp1) and reference buffer (Amp2) for ratiometric ADC measurement.

Use Value: Input common-mode range to GND enables direct thermistor connection; 2 nA max input offset current avoids self-heating errors; AEC-Q100 ensures 15-year life in thermal cycling environments.

Use Scenario: Converting 4–20 mA loop current to 0.5–2.5 V signal for STM32 ADC input in PLC analog input module.

IC Role / Device Role / Timing Role: Transimpedance amplifier (Amp1) with 125 Ω feedback resistor; Amp2 buffers reference voltage for offset calibration.

Use Value: 100 dB gain ensures <0.1% gain error; 1.1 MHz bandwidth supports fast loop diagnostics; 30 V abs max rating withstands 48 V system surges during commissioning.

Engine Coolant Level Detection

Smart Battery Management System (BMS) Cell Monitor

Use Scenario: Signal conditioning for capacitive coolant level sensor exposed to 125 °C under-hood temperatures.

IC Role / Device Role / Timing Role: Dual-channel AC-coupled amplifier (Amp1) and comparator driver (Amp2) feeding window comparator circuitry.

Use Value: 150 °C max operating temperature and 200 nA max I_IB prevent drift-induced false alarms; TSSOP8 wettable flanks ensure solder joint integrity during repeated thermal cycling.

Use Scenario: Amplifying voltage across 1 mΩ shunt resistor for cell current monitoring in 12S Li-ion pack, operating from isolated 3.3 V supply.

IC Role / Device Role / Timing Role: High-side current sense amplifier (Amp1) with gain of 100; Amp2 provides filtered reference for offset nulling.

Use Value: 2 mV max V_IO limits current measurement error to <±200 mA at 20 A full scale; 65 dB min PSRR rejects switching noise from adjacent DC-DC converters.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
LM2904WH	Enhanced ESD performance (2 kV HBM vs. 300 V), same pinout and electrical specs.	Better suited for high-ESD-risk assembly lines or end-use in dry-climate vehicles with static-prone cabin materials.	Select LM2904WH if ESD robustness exceeds AEC-Q100 baseline requirements and board-level protection is minimal.
LM2904H	Higher input offset voltage (2–7 mV vs. 1–2 mV), otherwise identical architecture and packaging.	Acceptable for non-precision applications like motor drive enable logic or basic voltage monitoring where <±5 mV error is tolerable.	Choose LM2904H only when cost sensitivity outweighs offset-critical performance; not recommended for sensor front-ends.

Compared with LM2904WH, LM2904AHYPT trades ESD margin for lower offset voltage and tighter parametric distribution; compared with LM2904H, it delivers superior DC accuracy at identical cost and footprint - making it optimal for precision automotive sensing where both offset and qualification are mandatory.

Availability

LM2904AHYPT is available at Aetrix Electronics and suitable for automotive cabin control modules, industrial 4–20 mA transmitters, and battery management system (BMS) signal chains requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for LM2904AHYPT 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-grade analog, power, and microcontroller solutions with vertical manufacturing and AEC-Q100 design validation expertise.

The LM2904AH belongs to ST's automotive-qualified precision op-amp family, engineered specifically for signal conditioning in engine control units (ECUs), body electronics, and ADAS subsystems where reliability, temperature stability, and single-supply operation are critical.

FAQ

Is LM2904AHYPT pin-compatible with standard LM2904 variants?

Yes, LM2904AHYPT uses the industry-standard TSSOP8 footprint and pinout defined in JEDEC MO-153, matching LM2904, LM2904B, and LM2904W series. Pin functions (OUT1, IN1−, IN1+, GND, IN2+, IN2−, OUT2, V_CC+) are electrically and physically identical, enabling drop-in replacement in existing designs without layout changes.

What is the maximum operating junction temperature for LM2904AHYPT?

The absolute maximum junction temperature is 160 °C, with continuous operation rated from −40 °C to +150 °C ambient. At 150 °C ambient and 30 V supply, thermal resistance (R_thJA) of 120 °C/W limits power dissipation to ~83 mW per amplifier - well within safe operating area for typical linear-mode use with <1 mA load current.

Does LM2904AHYPT support rail-to-rail output swing?

No - LM2904AHYPT provides output swing from 0 V to (V_CC+ − 1.5 V) under load. At 5 V supply, this yields 0–3.5 V swing; at 12 V, 0–10.5 V. It does not reach V_CC+ or GND under significant load, but its ability to swing to GND (unlike older bipolar op-amps) enables true single-supply interfacing with microcontrollers and ADCs.

Can LM2904AHYPT drive capacitive loads directly?

Yes, but with limitations: phase margin remains >45° for capacitive loads ≤100 pF at unity gain. For larger loads (e.g., >500 pF cables or ADC input capacitance), a series isolation resistor (10–100 Ω) between output and load is required to maintain stability, as confirmed by Figure 19 in DS11290 Rev 6.

LM2904AHYPT 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:: 700 kHz

-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):: 26 V

Operating Temperature:: -40°C ~ 150°C

Grade:: Automotive

Qualification:: AEC-Q100

Mounting Type:: Surface Mount

Supplier Device Package:: 8-TSSOP

LM2904AHYPT FAQ

1.How can I place an order for LM2904AHYPT through Aetrix?

Please submit a Request for Quotation (RFQ) for LM2904AHYPT 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 LM2904AHYPT reliable?

The price and inventory of LM2904AHYPT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2904AHYPT is usually 5 days.

3.What payment methods are accepted for LM2904AHYPT?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2904AHYPT transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for LM2904AHYPT?

LM2904AHYPT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your LM2904AHYPT 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 LM2904AHYPT?

For technical support, including LM2904AHYPT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2904AHYPT requirements.

6.How does Aetrix verify that LM2904AHYPT is sourced from the original manufacturer or authorized distributors?

All LM2904AHYPT 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 LM2904AHYPT meets industry standards.

7.What is the process for return or replacement of LM2904AHYPT?

All LM2904AHYPT units undergo pre-shipment inspection (PSI). If there is an issue with LM2904AHYPT, 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 LM2904AHYPT part is unused and in its original packaging.

Return procedure for LM2904AHYPT:

1.Submit a request within 90 days.

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

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