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

STMicroelectronics LM2904DT

Name: LM2904DT
Brand: STMicroelectronics
SKU: LM2904DT
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: LM2904DT

Manufacturer:: STMicroelectronics

Category:: Instrumentation, Op Amps, Buffer Amps

Package:: 8-SOIC (0.154", 3.90mm Width)

Datasheet:: LM2904DT.pdf

Description:: IC OPAMP GP 2 CIRCUIT 8SOIC

Quantity:: RFQ Add To RFQ list

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Inventory:27,683

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Product details

Overview

LM2904DT from STMicroelectronics is a dual low-power operational amplifier designed for single-supply operation in automotive and industrial control systems. It features 100 dB large-signal voltage gain, 1.1 MHz unity-gain bandwidth, ±32 V differential input voltage rating, rail-to-rail output swing (0 V to V_CC − 1.5 V), and operates from 3 V to 30 V supply. It is commonly used in transducer amplifiers and DC gain blocks interfacing with 5 V logic systems.

For engineers reviewing the LM2904DT datasheet, LM2904DT pinout, LM2904DT application, or LM2904DT equivalent, key selection criteria include input offset voltage (max 7 mV at 25 °C), input bias current (20 nA typ), supply current (0.7–1.2 mA per amplifier), common-mode input range extending to negative rail, and thermal robustness up to 125 °C ambient.

Technical Context

The LM2904DT integrates two independent high-gain op-amps with internal frequency compensation, enabling stable unity-gain operation without external components. Its PNP-input stage allows input common-mode voltage down to the negative rail (V_CC−), supporting true single-supply signal conditioning.

It delivers rail-to-rail output swing (0 V to V_CC − 1.5 V) under load, supports differential input voltages up to ±32 V, and maintains consistent 1.1 MHz gain-bandwidth product across temperature (−40 °C to +125 °C) and supply voltage (3–30 V).

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage Range	3 V to 30 V - Enables direct interface with 5 V logic rails and compatibility with wide industrial bus voltages.
Large-Signal Voltage Gain	100 dB (typ) - Provides >100,000× open-loop gain for precision DC amplification and sensor signal conditioning.
Unity-Gain Bandwidth	1.1 MHz (typ) - Supports audio-frequency and medium-speed control loop applications (e.g., motor feedback, power supply error amps).
Input Offset Voltage	7 mV (max at 25 °C) - Defines worst-case DC error in precision gain stages; critical for low-level sensor amplification.
Input Bias Current	20 nA (typ) - Minimizes loading on high-impedance sources (e.g., thermistors, photodiodes, potentiometers).
Output Voltage Swing	0 V to (V_CC − 1.5 V) - Delivers near-rail output capability essential for maximizing dynamic range in single-supply systems.
Common-Mode Input Range	V_CC− to (V_CC+ − 2 V) - Accepts inputs down to ground, enabling direct connection of unipolar sensors without level-shifting.

Pinout & Package

LM2904DT is supplied in SO8 package (standard small-outline integrated circuit, 150 mil width), with lead finish matte tin and RoHS-compliant ECOPACK2 construction.

Pin/Terminal	Circuit Role	Design Meaning
1	Output A	Amplifier A output; capable of sourcing/sinking ≥20 mA; swing limited to 0 V to (V_CC+ − 1.5 V).
2	Inverting Input A	Negative input of Amp A; accepts common-mode voltage down to V_CC− (ground in single-supply use).
3	Non-Inverting Input A	Positive input of Amp A; same common-mode range as Pin 2; enables ground-referenced sensing.
4	V_CC−	Negative supply terminal (GND in single-supply); serves as reference for all inputs and outputs.
5	Non-Inverting Input B	Positive input of Amp B; electrically isolated from Amp A; identical specs and voltage range.
6	Inverting Input B	Negative input of Amp B; supports same differential and common-mode voltage limits as Pins 2/3.
7	Output B	Amplifier B output; fully independent; shares same drive strength and swing characteristics as Pin 1.
8	V_CC+	Positive supply terminal; accepts 3–30 V; supply current (0.7–1.2 mA per amp) is voltage-independent.

Key Features

Feature	Design Value
Internal Frequency Compensation	Enables stable unity-gain operation without external capacitors-reduces BOM count and layout sensitivity.
Rail-to-Rail Input Common-Mode Range	Extends to V_CC−, allowing direct amplification of ground-referenced signals (e.g., current-sense shunts, thermocouples).
Low Supply Current per Amplifier	0.7–1.2 mA at 5 V - Enables battery-powered or energy-constrained designs while maintaining 1.1 MHz bandwidth.
Enhanced ESD Protection	HBM 300 V - Improves manufacturing yield and field reliability in industrial assembly environments.
Automotive-Qualified Variant Available	LM2904YDT meets AEC-Q100 Grade 1 (−40 °C to +125 °C) - supports functional safety-critical subsystems.

Applications

Transducer Signal Conditioning

DC Gain Block for 5 V Logic Systems

Use Scenario: Amplifying low-level analog outputs from pressure, temperature, or position sensors in engine control units.

IC Role / Device Role / Timing Role: Dual op-amp configured as instrumentation amplifier front-end and buffer stage.

Use Value: Input common-mode range including ground enables direct connection to grounded sensor bridges; 100 dB gain ensures µV-level resolution.

Use Scenario: Providing precise gain and level-shifting between 5 V microcontrollers and analog actuators or ADCs.

IC Role / Device Role / Timing Role: Non-inverting amplifier with fixed gain (e.g., ×11) operating directly from 5 V supply.

Use Value: Output swing to 0 V and up to 3.5 V (at 5 V supply) maximizes SNR for 12-bit ADCs without external level shifters.

Industrial Sensor Interface Module

Single-Supply Active Filter

Use Scenario: Building modular analog input cards for PLCs accepting 0–10 V or 4–20 mA field signals.

IC Role / Device Role / Timing Role: Dual op-amp used for current-to-voltage conversion and anti-aliasing filtering.

Use Value: Low input bias current (20 nA) prevents error in high-Z current-loop receivers; 1.1 MHz GBW supports filter cutoffs up to 100 kHz.

Use Scenario: Implementing second-order bandpass filters in vibration monitoring or audio pre-processing circuits.

IC Role / Device Role / Timing Role: Dual op-amp configured as active twin-T or multiple-feedback topology.

Use Value: Channel separation >120 dB at 1–20 kHz prevents crosstalk between dual-channel filter paths.

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
LM2904PT	TSSOP8 package (3.0 × 4.4 mm); 120 °C/W R_thJA; same electrical specs.	Better thermal performance in compact PCB layouts; requires finer-pitch reflow profile.	Select when board space is constrained and thermal management via PCB copper is prioritized over through-hole compatibility.
LM2904ST	MiniSO8 package (3.0 × 3.0 mm); 190 °C/W R_thJA; identical pinout and specs.	Smaller footprint than SO8 but higher thermal resistance; suited for cost-sensitive consumer-grade modules.	Choose for legacy MiniSO8-compatible footprints where SO8 socket replacement is not feasible.

Compared with LM2904PT and LM2904ST, the LM2904DT offers optimal thermal dissipation (125 °C/W R_thJA) and mechanical robustness in standard SO8, making it preferred for high-volume industrial assemblies requiring long-term solder joint reliability and ease of optical inspection.

Availability

LM2904DT is available at Aetrix Electronics and suitable for automotive engine control units, industrial PLC analog I/O modules, and 5 V-based sensor interface boards requiring stable component supply across extended temperature ranges and multi-year production cycles.

Supply support for LM2904DT 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, delivering silicon solutions for automotive, industrial, and power management applications with emphasis on reliability and environmental compliance.

The LM2904 series belongs to ST's precision analog portfolio, engineered specifically for robust single-supply operation in harsh environments-targeting automotive body electronics, industrial automation, and smart sensor nodes.

FAQ

What is the maximum operating junction temperature for LM2904DT?

The absolute maximum junction temperature is 150 °C. Under continuous operation at 125 °C ambient and full load, thermal design must ensure junction temperature remains below this limit using the SO8 package's 125 °C/W junction-to-ambient thermal resistance. Derating curves in DS0508 confirm safe operation up to 125 °C ambient at typical supply voltages.

Can LM2904DT operate with a 3.3 V supply?

Yes. The LM2904DT is specified for 3 V to 30 V single-supply operation. At 3.3 V, output swing is guaranteed from 0 V to at least 1.8 V (V_CC+ − 1.5 V), and input common-mode range extends to ground. Electrical characteristics-including 1.1 MHz bandwidth and 100 dB gain-are maintained across this full voltage range per Table 2 of DS0508.

Does LM2904DT have rail-to-rail output capability?

It provides near rail-to-rail output swing: from 0 V to (V_CC+ − 1.5 V) under load. This is not true rail-to-rail (e.g., 0 V to V_CC+), but the 1.5 V headroom is consistent across temperature and supply voltage. For example, at 5 V supply, output reaches 3.5 V minimum-sufficient for driving most 12-bit ADCs and logic interfaces without level-shifting.

How does LM2904DT differ from LM2904A?

The LM2904A offers tighter input offset voltage (1–2 mV max vs. 2–7 mV for LM2904DT) and improved drift performance (ΔV_io/ΔT ≤ 30 µV/°C). Both share identical pinout, package, bandwidth, and supply range. LM2904DT is the standard grade; LM2904A is selected for higher-precision DC applications such as medical sensor front-ends or calibration circuits.

LM2904DT Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: 8-SOIC (0.154", 3.90mm 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:: 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:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 8-SOIC

LM2904DT FAQ

1.How can I place an order for LM2904DT through Aetrix?

Please submit a Request for Quotation (RFQ) for LM2904DT 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 LM2904DT reliable?

The price and inventory of LM2904DT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2904DT is usually 5 days.

3.What payment methods are accepted for LM2904DT?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2904DT transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for LM2904DT?

LM2904DT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your LM2904DT 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 LM2904DT?

For technical support, including LM2904DT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2904DT requirements.

6.How does Aetrix verify that LM2904DT is sourced from the original manufacturer or authorized distributors?

All LM2904DT 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 LM2904DT meets industry standards.

7.What is the process for return or replacement of LM2904DT?

All LM2904DT units undergo pre-shipment inspection (PSI). If there is an issue with LM2904DT, 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 LM2904DT part is unused and in its original packaging.

Return procedure for LM2904DT:

1.Submit a request within 90 days.

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

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