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STMicroelectronics LM2904WYDT
- Part No.:
- LM2904WYDT
- Manufacturer:
- STMicroelectronics
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LM2904WYDT.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:10,995
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Product details
Overview
LM2904WYDT from STMicroelectronics is a dual, low-power operational amplifier designed for automotive and industrial single-supply systems. It features 100 dB DC voltage gain, 1.1 MHz unity-gain bandwidth, 500 µA per channel supply current, rail-to-rail input (including negative rail), and output swing to within 1.5 V of VCC. It is AEC-Q100 qualified and commonly used in transducer signal conditioning and DC gain blocks.
For engineers reviewing the LM2904WYDT datasheet, LM2904WYDT pinout, LM2904WYDT application, or LM2904WYDT equivalent, key selection criteria include its automotive-grade temperature range (−40°C to +125°C), input bias current (20 nA), input offset voltage (max 7 mV), and SO-8 package compatibility with standard PCB layouts.
Technical Context
The LM2904WYDT 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, allowing common-mode voltage down to the negative rail (ground in single-supply use) and differential input range equal to the full supply voltage.
It delivers rail-to-rail input operation and large output voltage swing (0 V to VCC − 1.5 V), supporting direct interfacing with logic-level systems (e.g., +5 V supply). The device maintains consistent 500 µA/channel supply current across 3–30 V supply range and includes 2 kV HBM ESD protection on all pins.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3 V to 30 V - supports wide-range single-supply operation including standard +5 V logic rails. |
| DC Voltage Gain | 100 dB - enables precise amplification of low-level sensor signals with minimal error. |
| Unity-Gain Bandwidth | 1.1 MHz - sufficient for audio-band and medium-speed control loop applications. |
| Supply Current per Channel | 500 µA - ultra-low quiescent power ideal for battery-powered or thermally constrained systems. |
| Input Bias Current | 20 nA (typ) - ensures minimal loading on high-impedance sources like thermistors or photodiodes. |
| Input Offset Voltage | 7 mV (max, −40°C to +125°C) - defines worst-case DC error in precision DC-coupled gain stages. |
| Common-Mode Input Range | Includes negative rail (0 V) - allows ground-referenced inputs in single-supply configurations. |
| Output Voltage Swing | 0 V to (VCC − 1.5 V) - supports near-rail output drive into moderate loads without saturation. |
Pinout & Package
LM2904WYDT is supplied in an SO-8 (Small Outline) plastic micropackage, RoHS-compliant and automotive-qualified per AEC-Q100.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input (Channel A) | Accepts feedback signal for standard inverting amplifier configuration. |
| 2 | Non-Inverting Input (Channel A) | Reference input for non-inverting gain or comparator reference. |
| 3 | Output (Channel A) | Amplified output node; capable of sourcing/sinking up to 40 mA. |
| 4 | Negative Supply / Ground | Reference terminal for single-supply operation; tied to system ground. |
| 5 | Non-Inverting Input (Channel B) | Independent input for second op-amp channel; identical electrical behavior to Pin 2. |
| 6 | Inverting Input (Channel B) | Feedback input for second independent amplifier stage. |
| 7 | Output (Channel B) | Second independent output; electrically isolated from Channel A. |
| 8 | Positive Supply (VCC+) | Single positive supply input; operates from 3–30 V with no dependency on supply magnitude for quiescent current. |
Key Features
| Feature | Design Value |
|---|---|
| Internal Frequency Compensation | Enables stable unity-gain operation without external compensation capacitors - reduces BOM count and layout complexity. |
| Rail-to-Rail Input Common-Mode Range | Includes ground (0 V) - permits direct connection of ground-referenced sensors without level-shifting circuitry. |
| Low Input Bias Current (20 nA) | Minimizes voltage error across high-impedance source impedances (>100 kΩ), critical for precision transducer interfaces. |
| Automotive Qualification (AEC-Q100) | Validated for −40°C to +125°C operation with enhanced reliability screening - suitable for engine control, body electronics, and ADAS subsystems. |
| ESD Protection (2 kV HBM) | Robust handling during board assembly and field operation - reduces need for external protection diodes in many applications. |
Applications
| Transducer Signal Conditioning | Industrial Sensor Interface |
|---|---|
|
Use Scenario: Amplifying low-level output from pressure, temperature, or position sensors in automotive ECUs. IC Role / Device Role / Timing Role: Dual-channel DC-coupled amplifier providing fixed-gain signal boosting before ADC sampling. Use Value: Input common-mode range including ground enables direct connection to grounded-sensor bridges; 500 µA/channel current supports always-on monitoring modes. |
Use Scenario: Signal conditioning for 4–20 mA loop receivers and RTD/thermistor front-ends in PLC modules. IC Role / Device Role / Timing Role: Precision DC gain block and active filtering stage operating from 24 V industrial supply. Use Value: 7 mV max input offset ensures <0.5% full-scale error in 12-bit measurement systems; SO-8 package supports automated assembly. |
| Automotive Body Control | Low-Power Battery Monitoring |
|
Use Scenario: Window lift motor current sensing and interior lighting dimming control in door modules. IC Role / Device Role / Timing Role: Current-sense amplifier and comparator reference buffer in 12 V vehicle networks. Use Value: AEC-Q100 qualification guarantees reliability under automotive thermal cycling; 30 V absolute max supply withstands load-dump transients. |
Use Scenario: Voltage and current monitoring in 12 V lead-acid or LiFePO₄ backup systems for telecom or UPS. IC Role / Device Role / Timing Role: Low-quiescent monitor amplifier feeding microcontroller ADC with minimal standby drain. Use Value: 500 µA/channel supply current extends battery life in always-on monitoring; −40°C to +125°C rating covers under-hood environments. |
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 | Commercial grade (−40°C to +105°C), same SO-8 package and electrical specs but lacks AEC-Q100 qualification. | Not approved for automotive safety-critical or under-hood use; suitable for industrial or consumer systems with lower ambient temp requirements. | Select when AEC-Q100 is not required and cost sensitivity outweighs automotive reliability needs. |
| TSV912IDT | Higher GBW (8 MHz), lower input offset (1.5 mV typ), but higher supply current (820 µA/ch) and narrower supply range (2.7–5.5 V). | Better for high-speed, precision DC applications at 3.3 V or 5 V; unsuitable for 12–24 V industrial or automotive supplies. | Choose for improved AC performance and offset in low-voltage, space-constrained designs where power budget allows. |
Compared with LM2904DT, LM2904WYDT adds automotive qualification and extended temperature support without trade-offs in power or footprint; versus TSV912IDT, it trades bandwidth and offset for wider supply range and lower quiescent current - making it optimal for robust, low-power 12–24 V automotive signal chains.
Availability
LM2904WYDT is available at Aetrix Electronics and suitable for automotive body control units, industrial sensor signal conditioning, and battery monitoring systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LM2904WYDT 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.
LM2904WYDT belongs to ST's automotive-qualified precision analog portfolio, developed specifically to meet stringent AEC-Q100 reliability standards for signal conditioning in harsh-environment electronic control units.
FAQ
Is LM2904WYDT pin-compatible with standard LM2904 variants?
Yes - LM2904WYDT uses the industry-standard SO-8 pinout (Pin 1 = Inverting Input A, Pin 4 = GND, Pin 8 = VCC+), matching LM2904DT, LM2904D, and other SO-8 dual op-amps. No PCB redesign is needed when upgrading to automotive-grade qualification.
What is the maximum output current capability per channel?
Each channel can source or sink up to 40 mA continuously (per datasheet Table 3, Isource/Isink test conditions), with short-circuit protection limiting dissipation. At VCC = 15 V, sustained >20 mA output requires attention to thermal derating due to SO-8 package Rthja ≈ 125 °C/W.
Can LM2904WYDT operate from a single 3.3 V supply?
Yes - the device is fully specified down to 3 V supply (Table 2), with functional input common-mode range extending to ground and output swing to within 1.5 V of VCC. However, output headroom limits usable dynamic range to ~1.8 Vpp at 3.3 V, making it suitable for low-voltage biasing or comparator use but not high-fidelity amplification.
Does LM2904WYDT require external compensation capacitors?
No - internal frequency compensation ensures stable unity-gain operation across the full temperature and supply range. External compensation is unnecessary for standard inverting/non-inverting configurations; only specialized high-gain (>100×) or capacitive-load-heavy circuits may benefit from optional phase-compensation networks.
LM2904WYDT 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:
- 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-SOIC
LM2904WYDT FAQ
1.How can I place an order for LM2904WYDT through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2904WYDT 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 LM2904WYDT reliable?
The price and inventory of LM2904WYDT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2904WYDT is usually 5 days.
3.What payment methods are accepted for LM2904WYDT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2904WYDT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2904WYDT?
LM2904WYDT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2904WYDT 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 LM2904WYDT?
For technical support, including LM2904WYDT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2904WYDT requirements.
6.How does Aetrix verify that LM2904WYDT is sourced from the original manufacturer or authorized distributors?
All LM2904WYDT 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 LM2904WYDT meets industry standards.
7.What is the process for return or replacement of LM2904WYDT?
All LM2904WYDT units undergo pre-shipment inspection (PSI). If there is an issue with LM2904WYDT, 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 LM2904WYDT part is unused and in its original packaging.
Return procedure for LM2904WYDT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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