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STMicroelectronics LM2904YST
- Part No.:
- LM2904YST
- Manufacturer:
- STMicroelectronics
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LM2904YST.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8MINISO
- Quantity:
- Payment:
- Shipping:
Inventory:5,396
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Product details
Overview
LM2904YST from STMicroelectronics is a dual, low-power operational amplifier optimized for automotive-grade operation (AEC-Q100 qualified), featuring rail-to-rail input (including negative rail) and output swing to 0 V on single supply, 1.1 MHz gain-bandwidth product, 100 dB open-loop gain, and 20 nA input bias current. It enables transducer signal conditioning and DC gain blocks in engine control units, battery management systems, and industrial sensor interfaces.
For engineers reviewing the LM2904YST datasheet, LM2904YST pinout, LM2904YST application, or LM2904YST equivalent, key selection criteria include its -40 °C to +125 °C operating range, MiniSO8 wettable-flank-compatible footprint, input common-mode range extending to ground, and guaranteed 1.5 V headroom from positive rail at full output swing.
Technical Context
This dual op-amp uses PNP input-stage topology enabling input voltage range down to VCC−, with internal frequency compensation ensuring stable unity-gain operation. Its architecture supports single-supply operation from 3 V to 30 V while maintaining consistent 0.7–1.2 mA supply current across voltage and temperature.
The device implements enhanced ESD protection (2 kV HBM), thermal shutdown, and output short-circuit robustness up to 40 mA per channel. Input offset voltage is trimmed to 1–2 mV (typ.) for LM2904A-grade performance, and slew rate is specified at 0.3–0.6 V/µs under 15 V supply with 2 kΩ load.
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 24 V industrial buses without level-shifting. |
| Gain-Bandwidth Product | 1.1 MHz - Supports closed-loop gains up to ~100 at 10 kHz for sensor amplification and filtering. |
| Input Offset Voltage (25 °C) | 1–2 mV (LM2904A grade) - Ensures ≤20 mV error in 10× non-inverting DC gain stages at room temperature. |
| Input Bias Current | 20 nA - Allows use with high-impedance sources (e.g., thermistors, pH electrodes) without significant voltage drop. |
| Common-Mode Input Range | VCC− to (VCC+ − 2 V) - Permits direct sensing of signals referenced to ground in single-supply systems. |
| Output Voltage Swing | 0 V to (VCC+ − 1.5 V) - Delivers full dynamic range into loads tied to ground, critical for ADC driver stages. |
| Quiescent Current per Amp | 0.35–0.6 mA - Enables dual-channel amplification in power-constrained automotive modules (<1.2 mA total). |
Pinout & Package
LM2904YST is supplied in MiniSO8 package (3.0 mm × 4.9 mm, 1.27 mm pitch), AEC-Q100 qualified, with wettable flank capability for automated optical solder-joint inspection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - Out1 | Amplifier 1 output | Drives external load; capable of sourcing/sinking ≥20 mA; swings 0 V to (VCC+ − 1.5 V). |
| 2 - In1− | Inverting input of Amp1 | Differential pair emitter node; accepts input down to VCC−; biased by 20 nA PNP input stage. |
| 3 - In1+ | Non-inverting input of Amp1 | Differential pair base node; shares same input voltage range and bias current as In1−. |
| 4 - VCC− | Negative supply / ground reference | Return path for both amplifiers; input common-mode extends to this pin; must be low-impedance. |
| 5 - In2+ | Non-inverting input of Amp2 | Independent of Amp1 inputs; identical electrical behavior; enables dual-channel signal processing. |
| 6 - In2− | Inverting input of Amp2 | Matches In1− characteristics; supports differential or single-ended configurations per channel. |
| 7 - Out2 | Amplifier 2 output | Electrically isolated from Out1; same drive strength and swing limits as Out1. |
| 8 - VCC+ | Positive supply | Single-supply rail (3–30 V); quiescent current independent of voltage magnitude; decoupling required. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input (down to VCC−) | Enables direct interfacing with ground-referenced sensors (e.g., thermocouples, strain gauges) without level shifters. |
| Output swing to 0 V | Permits full-scale driving of single-supply ADCs (e.g., SAR or sigma-delta) without negative supply or clamping diodes. |
| AEC-Q100 Grade 1 qualification | Validated for automotive ambient temperatures (−40 °C to +125 °C) and lifetime reliability in engine bay applications. |
| Enhanced ESD protection (2 kV HBM) | Reduces field failure risk during PCB handling and in-vehicle ESD events without external protection components. |
| Internal frequency compensation | Guarantees stability in unity-gain follower and inverting configurations without external compensation networks. |
Applications
| Engine Control Unit (ECU) Sensor Interface | Automotive Battery Management System (BMS) |
|---|---|
|
Use Scenario: Amplifying low-level signals from oxygen (O₂) and knock sensors in harsh under-hood environments. IC Role / Device Role / Timing Role: Dual-channel DC-coupled transducer amplifier with rail-to-rail input and 0 V output swing. Use Value: Eliminates need for dual supplies or level-shifters, reducing BOM cost and board space while meeting AEC-Q100 thermal requirements. |
Use Scenario: Monitoring cell voltage and temperature in 12 V lead-acid or 48 V Li-ion battery packs. IC Role / Device Role / Timing Role: Precision DC gain block for shunt-based current sensing and thermistor signal conditioning. Use Value: 1–2 mV input offset ensures ≤20 mV measurement error over full temperature range, critical for state-of-charge accuracy. |
| Industrial PLC Analog Input Module | Automotive HVAC Blower Control |
|
Use Scenario: Conditioning 4–20 mA loop signals and RTD bridge outputs in programmable logic controllers. IC Role / Device Role / Timing Role: High-Z buffer and gain stage preceding SAR ADC, operating from 24 V industrial rail. Use Value: 20 nA input bias current prevents loading of high-impedance RTD bridges; 30 V max supply accommodates brownout margins. |
Use Scenario: Closed-loop speed regulation of DC blower motors using hall-effect rotor position feedback. IC Role / Device Role / Timing Role: Error amplifier in PWM motor controller feedback path, rejecting supply ripple. Use Value: 100 dB open-loop gain and 65–100 dB supply rejection ratio maintain stable loop response despite 12 V battery fluctuations. |
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 | SO8 package, commercial temperature range (−40 °C to +105 °C), no AEC-Q100 qualification. | Suitable for non-automotive industrial controls where extended temperature and automotive reliability are not required. | Select when cost sensitivity outweighs automotive qualification needs and SO8 footprint is preferred. |
| TSB572IST | Lower quiescent current (380 µA vs. 700 µA), higher GBP (2.5 MHz), but reduced output drive (±25 mA). | Better suited for ultra-low-power portable instrumentation; less ideal for driving heavy capacitive loads or low-Z sensors. | Choose for battery-powered sensor nodes needing faster settling and lower power, accepting reduced output current. |
Compared with LM2904DT, LM2904YST provides guaranteed automotive-grade reliability and wider temperature margin; compared with TSB572IST, it trades bandwidth and quiescent current for higher output drive and proven robustness in noisy automotive power domains.
Availability
LM2904YST is available at Aetrix Electronics and suitable for automotive engine control, battery management systems, industrial PLC analog I/O, and HVAC motor control requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LM2904YST 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 microcontrollers, power ICs, sensors, and analog components for automotive, industrial, and consumer markets.
LM2904YST belongs to ST's precision analog portfolio targeting automotive signal conditioning, where robustness, AEC-Q100 compliance, and single-supply operability are foundational design goals.
FAQ
What is the maximum operating junction temperature for LM2904YST?
The maximum junction temperature is 150 °C, validated under AEC-Q100 stress testing. Thermal resistance junction-to-ambient (RthJA) is 190 °C/W for the MiniSO8 package, requiring appropriate PCB copper area and airflow to maintain safe operation at full 30 V supply and 125 °C ambient.
Can LM2904YST drive a 10 kΩ load to rail with 5 V supply?
Yes - with VCC+ = 5 V, the output swings to 0 V and up to 3.5 V (VCC+ − 1.5 V) into 10 kΩ, confirmed by VOL ≤ 20 mV and VOH ≥ 3.4 V in datasheet Table 3. This meets rail-to-rail output requirements for driving 5 V ADC references and comparators.
Does LM2904YST require external compensation capacitors?
No - internal frequency compensation ensures unity-gain stability across all operating conditions. The device is characterized for stable operation in inverting, non-inverting, and voltage-follower configurations without added external components, simplifying layout and reducing BOM count.
How does the input bias current behave over temperature?
Input bias current remains ≤200 nA across −40 °C to +125 °C (max), with typical value of 20 nA at 25 °C. Its PNP-input architecture causes bias current to flow *out* of the inputs, making it stable and predictable - unlike CMOS op-amps - which simplifies high-impedance source interfacing.
LM2904YST Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm 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-MiniSO
LM2904YST FAQ
1.How can I place an order for LM2904YST through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2904YST 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 LM2904YST reliable?
The price and inventory of LM2904YST are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2904YST is usually 5 days.
3.What payment methods are accepted for LM2904YST?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2904YST transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2904YST?
LM2904YST orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2904YST 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 LM2904YST?
For technical support, including LM2904YST datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2904YST requirements.
6.How does Aetrix verify that LM2904YST is sourced from the original manufacturer or authorized distributors?
All LM2904YST 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 LM2904YST meets industry standards.
7.What is the process for return or replacement of LM2904YST?
All LM2904YST units undergo pre-shipment inspection (PSI). If there is an issue with LM2904YST, 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 LM2904YST part is unused and in its original packaging.
Return procedure for LM2904YST:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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