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STMicroelectronics LM2904YDT
- Part No.:
- LM2904YDT
- Manufacturer:
- STMicroelectronics
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LM2904YDT.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:8,054
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Product details
Overview
LM2904YDT from STMicroelectronics is a dual, low-power operational amplifier optimized for automotive-grade single-supply operation (3 V to 30 V), featuring rail-to-rail input (including negative rail) and output swing to within 1.5 V of VCC+, 100 dB DC gain, 1.1 MHz unity-gain bandwidth, and 20 nA input bias current. It serves as a general-purpose signal conditioning IC in engine control units, body electronics, and industrial sensor interfaces.
For engineers reviewing the LM2904YDT datasheet, LM2904YDT pinout, LM2904YDT application, or LM2904YDT equivalent, key selection criteria include its AEC-Q100 qualified SO8 package, enhanced ESD robustness (2 kV HBM), wide temperature range (−40 °C to +125 °C), and compatibility with 5 V logic-supplied systems without level-shifting.
Technical Context
This dual op-amp integrates internally compensated frequency response and PNP-input transistor pairs enabling common-mode input voltage down to the negative rail (GND in single-supply use). Its architecture supports stable unity-gain operation with capacitive loads up to 100 pF and maintains phase margin >45° across temperature.
The device uses a current-source-loaded differential pair with active load and Class AB output stage, delivering 40 mA short-circuit output current while maintaining <1.2 mA total supply current at 5 V - independent of supply voltage magnitude - making it suitable for battery-powered and energy-conscious automotive subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3 V to 30 V - enables direct interface with 5 V/12 V/24 V automotive rails without regulation. |
| Input Offset Voltage (25 °C) | 2 mV (typ.) - ensures ≤20 mV error in 10× gain transducer amplifiers at room temperature. |
| Unity-Gain Bandwidth | 1.1 MHz - supports audio-band filtering and 10 kHz closed-loop gain ≥100 applications. |
| Slew Rate | 0.6 V/µs (typ.) - allows full-scale 10 V output step in <17 µs, sufficient for slow-control loop feedback. |
| Input Bias Current | 20 nA (typ.) - minimizes voltage error across high-impedance sensor bridges (>100 kΩ). |
| CMRR | 85 dB (typ., 25 °C) - rejects >99.97% of common-mode noise in noisy engine bay environments. |
| ESD Robustness (HBM) | 2000 V - meets AEC-Q100 stress requirements for under-hood module assembly and handling. |
Pinout & Package
LM2904YDT is supplied in an automotive-qualified SO8 package (5.0 mm × 4.0 mm × 1.27 mm height), RoHS-compliant and ECOPACK2 certified, with gull-wing leads compatible with standard reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT1) | Amplifier 1 output | Delivers rail-to-rail capable output swing (0 V to VCC − 1.5 V); drives 2 kΩ loads directly. |
| 2 (IN1−) | Amplifier 1 inverting input | Differential input node; accepts signals down to GND; matched to IN1+ for precision gain setting. |
| 3 (IN1+) | Amplifier 1 non-inverting input | High-impedance input (20 nA bias); supports DC-coupled sensor biasing and reference connections. |
| 4 (VCC−) | Negative supply / ground | Reference node for single-supply operation; tied to system GND; supports input common-mode down to this rail. |
| 5 (IN2+) | Amplifier 2 non-inverting input | Independent high-Z input; electrically isolated from Amp1; enables dual-channel signal conditioning. |
| 6 (IN2−) | Amplifier 2 inverting input | Matches IN1− characteristics; supports identical feedback network design for both channels. |
| 7 (OUT2) | Amplifier 2 output | Functionally identical to OUT1; channel separation >120 dB prevents crosstalk in multi-signal systems. |
| 8 (VCC+) | Positive supply | Accepts 3–30 V; supply current (1.2 mA typ. @ 5 V) remains stable across full voltage range. |
Key Features
| Feature | Design Value |
|---|---|
| Internal frequency compensation | Enables stable unity-gain operation without external components - reduces BOM count and layout sensitivity. |
| Rail-to-rail input common-mode range | Includes VCC− (GND), allowing direct connection of grounded sensors and zero-referenced transducers. |
| Output voltage swing | 0 V to (VCC+ − 1.5 V) - delivers usable dynamic range in 5 V systems (0–3.5 V output) for ADC interfacing. |
| Low supply current per amplifier | 0.6 mA typ. @ 5 V - enables dual-op-amp integration in power-constrained modules (e.g., LIN bus nodes). |
| AEC-Q100 qualification | Grade 1 (−40 °C to +125 °C) and enhanced ESD (2 kV HBM) - validated for engine control, transmission, and ADAS submodules. |
Applications
| Engine Coolant Temperature Sensing | Body Control Module Signal Conditioning |
|---|---|
|
Use Scenario: Amplifying low-level resistance changes from NTC thermistors in coolant circuits. IC Role / Device Role / Timing Role: Transducer amplifier with DC-coupled gain block; provides 10×–100× gain before 12-bit ADC sampling. Use Value: Input common-mode range including GND enables direct thermistor-to-ground connection; 2 mV offset ensures ≤0.5 °C measurement error at 25 °C. |
Use Scenario: Level-shifting and buffering analog signals from door lock actuators and window motor current sensors. IC Role / Device Role / Timing Role: Single-supply buffer and summing amplifier; interfaces 0–5 V microcontroller I/O with 12 V actuator feedback. Use Value: Output swing to 0 V allows clean low-side current sensing; 1.1 MHz bandwidth supports transient detection during motor stall events. |
| Automotive Cabin Air Quality Monitor | Industrial CAN Node Analog Front-End |
|
Use Scenario: Conditioning ppm-level voltage outputs from electrochemical CO₂ and VOC sensors. IC Role / Device Role / Timing Role: Precision DC gain block with low drift; feeds filtered signal to SAR ADC in air quality controller. Use Value: 7 µV/°C offset drift limits thermal error to <1% FS over −40 °C to +85 °C ambient range. |
Use Scenario: Isolating and scaling current-sense signals from CAN transceiver power supplies. IC Role / Device Role / Timing Role: High-CMRR differential amplifier rejecting common-mode noise on shared 12 V rail feeding CAN PHY. Use Value: 85 dB CMRR suppresses >99.97% of 12 V rail ripple at 100 kHz, preventing false CAN error framing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2904DT | Same SO8 package and electrical specs, but standard industrial grade (−40 °C to +125 °C, 300 V HBM ESD). | Lacks AEC-Q100 qualification and enhanced ESD; not approved for safety-critical automotive modules. | Select when cost sensitivity outweighs automotive qualification requirements and operating environment is controlled. |
| LM2904WDT | Identical SO8 footprint and pinout; adds wider input voltage range (−0.3 V to VCC+0.3 V) and improved ESD (2 kV HBM) - same AEC-Q100 Grade 1 rating. | Supports higher-voltage transients (e.g., load dump immunity) and offers lower input offset voltage drift (30 µV/°C vs. 7 µV/°C). | Prefer for next-gen designs requiring extended input fault tolerance and tighter thermal stability in harsh under-hood locations. |
Compared with LM2904DT, LM2904YDT adds automotive qualification and ESD hardening at no footprint or layout penalty; versus LM2904WDT, it trades slightly higher offset drift for lower unit cost while retaining full AEC-Q100 compliance for non-safety-critical body electronics.
Availability
LM2904YDT is available at Aetrix Electronics and suitable for engine control units, body electronics modules, and industrial sensor signal conditioning requiring stable component supply across automotive production lifecycles.
Supply support for LM2904YDT 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 automotive ICs for industrial and transportation markets.
LM2904YDT belongs to ST's automotive-qualified precision op-amp product line, engineered specifically for reliable signal conditioning in harsh-temperature, high-noise vehicle subsystems - from cabin comfort to powertrain monitoring.
FAQ
Is LM2904YDT pin-compatible with standard LM2904 variants?
Yes - LM2904YDT uses the industry-standard SO8 pinout (per Figure 4 of DS0508 Rev 21), matching LM2904DT, LM2904PT, and LM2904ST. All share identical pin functions: OUT1, IN1−, IN1+, VCC−, IN2+, IN2−, OUT2, VCC+. No PCB redesign is needed when upgrading to automotive-grade qualification.
What is the maximum capacitive load LM2904YDT can drive stably?
LM2904YDT maintains stable unity-gain operation with up to 100 pF capacitive load, as verified in Figure 20 (Phase Margin vs. Capacitive Load) of DS0508 Rev 21. For loads >100 pF, a series resistor (≥100 Ω) between output and capacitance is recommended to preserve phase margin above 45°.
Does LM2904YDT support true rail-to-rail output?
No - LM2904YDT delivers output swing from 0 V to (VCC+ − 1.5 V) under 2 kΩ load, per Table 4 in DS0508 Rev 21. It achieves rail-to-rail *input* (common-mode includes VCC−), but output headroom is fixed at ~1.5 V, limiting full-scale utilization in 3.3 V systems.
Can LM2904YDT operate from a 3.3 V supply?
Yes - LM2904YDT is specified for VCC = 3 V to 30 V (Table 2, DS0508 Rev 21). At 3.3 V, output swing is 0 V to 1.8 V, input common-mode extends to GND, and supply current remains ~0.7 mA. Performance metrics (GBW, SR) scale downward but remain functional for low-speed sensor interfaces.
LM2904YDT 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:
- 30 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
LM2904YDT FAQ
1.How can I place an order for LM2904YDT through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2904YDT 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 LM2904YDT reliable?
The price and inventory of LM2904YDT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2904YDT is usually 5 days.
3.What payment methods are accepted for LM2904YDT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2904YDT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2904YDT?
LM2904YDT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2904YDT 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 LM2904YDT?
For technical support, including LM2904YDT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2904YDT requirements.
6.How does Aetrix verify that LM2904YDT is sourced from the original manufacturer or authorized distributors?
All LM2904YDT 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 LM2904YDT meets industry standards.
7.What is the process for return or replacement of LM2904YDT?
All LM2904YDT units undergo pre-shipment inspection (PSI). If there is an issue with LM2904YDT, 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 LM2904YDT part is unused and in its original packaging.
Return procedure for LM2904YDT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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