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STMicroelectronics LM2902DT
- Part No.:
- LM2902DT
- Manufacturer:
- STMicroelectronics
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LM2902DT.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14SO
- Quantity:
- Payment:
- Shipping:
Inventory:18,674
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Product details
Overview
LM2902DT from STMicroelectronics is a low-power quad operational amplifier designed for single-supply operation in automotive and industrial control systems. It features 1.3 MHz gain bandwidth, 100 dB large-signal voltage gain, ±1.5 V to ±15 V dual or 3 V to 30 V single supply range, input common-mode voltage extending to the negative rail, and 375 µA per amplifier supply current. It is used in sensor signal conditioning, battery-powered instrumentation, and DC-coupled amplification circuits.
For engineers reviewing the LM2902DT datasheet, LM2902DT pinout, LM2902DT application, or LM2902DT equivalent, key selection criteria include rail-to-rail input capability (negative rail inclusive), low quiescent current across wide supply range, guaranteed operation at –40 °C to +125 °C, and compatibility with SO14/TSSOP14/QFN16 footprint variants for layout flexibility.
Technical Context
The LM2902DT integrates four independent internally compensated op amps using PNP-input transistor pairs, enabling input common-mode voltage down to the negative supply rail. Its architecture supports stable unity-gain operation and delivers 0.4 V/µs slew rate with 1.3 MHz GBP under 30 V supply.
It operates over full automotive temperature range (–40 °C to +125 °C) with input offset voltage ≤7 mV (typ), input bias current ≤20 nA (typ), and output short-circuit current ≥20 mA. The device maintains 65 dB minimum supply voltage rejection and 70 dB minimum CMRR at 25 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain bandwidth product | 1.3 MHz - sets usable small-signal bandwidth for closed-loop gains up to ~100 at 10 kHz |
| Large-signal voltage gain | 100 dB (10⁵ V/V) - ensures <0.1% gain error in precision DC amplification |
| Input offset voltage | 7 mV (typ) - defines worst-case DC error in high-gain sensor interfaces without trimming |
| Supply current per amplifier | 375 µA - enables four-channel analog front-end operation below 1.5 mA total at 5 V |
| Common-mode input range | Includes negative rail - allows direct interfacing with ground-referenced sensors and single-supply transducers |
| Output short-circuit current | 20 mA - supports driving 150 Ω loads or charging 100 pF capacitive loads without latch-up |
| Operating temperature | –40 °C to +125 °C - qualified for under-hood automotive and industrial ambient environments |
Pinout & Package
TSSOP-14 package: 4.9 mm × 6.4 mm × 1.05 mm body height, 0.65 mm pitch, wettable flank option available for automated optical inspection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting input (Amp 1) | High-impedance node accepting feedback network for inverting configuration |
| 2 | Non-inverting input (Amp 1) | DC-coupled input capable of operating at GND potential in single-supply mode |
| 3 | Output (Amp 1) | Class AB output stage delivering ±20 mA short-circuit current into resistive loads |
| 4 | Ground / VCC− | Reference return path for all four amplifiers; tied to system GND in single-supply use |
| 5 | Non-inverting input (Amp 2) | Independent input with same rail-to-negative-rail common-mode range as Pin 2 |
| 6 | Inverting input (Amp 2) | Accepts feedback resistor for second channel; electrically isolated from other inputs |
| 7 | Output (Amp 2) | Separate output driver with no crosstalk >120 dB at 1 kHz (channel separation) |
| 8 | VCC+ | Positive supply rail; supports 3–30 V operation; powers all four amplifiers simultaneously |
| 9 | Output (Amp 3) | Third independent output; shares same thermal and supply characteristics as Pins 3 and 7 |
| 10 | Inverting input (Amp 3) | Matched input structure to Pins 1 and 6; supports identical bias current (20 nA typ) |
| 11 | Non-inverting input (Amp 3) | Enables DC-coupled non-inverting gain stages referenced to GND or mid-supply |
| 12 | Inverting input (Amp 4) | Fourth high-impedance input; compatible with active filter topologies requiring multiple integrators |
| 13 | Non-inverting input (Amp 4) | Supports differential input configurations when paired with Amp 3 (e.g., instrumentation amp) |
| 14 | Output (Amp 4) | Final output channel; specified for 26 V high-level swing at 30 V supply and 2 kΩ load |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input (down to VCC−) | Enables direct interface with 0 V-referenced sensors and eliminates level-shifting circuitry |
| Low input bias current (20 nA) | Reduces voltage error in high-impedance source applications (e.g., pH electrodes, photodiode amps) |
| Wide supply range (3–30 V single) | Permits reuse across 5 V microcontroller systems and 24 V industrial PLC I/O modules |
| Automotive-grade qualification | AEC-Q100 qualified (Grade 1), supporting deployment in engine control, ADAS sensor nodes, and body electronics |
| Thermal resistance (TSSOP14) | 100 °C/W junction-to-ambient enables >150 mW dissipation at 85 °C ambient without heatsink |
Applications
| Automotive Cabin Temperature Sensor Interface | Industrial 4–20 mA Loop Receiver |
|---|---|
|
Use Scenario: Amplifying millivolt-level output from NTC thermistors mounted near HVAC ducts. IC Role / Device Role / Timing Role: Quad op amp configured as two-stage DC-coupled amplifier and buffer for ADC input. Use Value: Input common-mode range including ground allows direct connection to thermistor divider without biasing resistors; 375 µA per amp minimizes battery drain in always-on modules. |
Use Scenario: Converting 4–20 mA loop current to 0–5 V for microcontroller ADC sampling. IC Role / Device Role / Timing Role: Precision current-to-voltage converter with gain-setting resistor and output buffer. Use Value: 7 mV max input offset ensures <0.14% full-scale error at 4 mA; 100 dB gain supports accurate low-current detection. |
| Portable Medical Pulse Oximeter Analog Front End | Smart Building CO₂ Sensor Signal Conditioning |
|
Use Scenario: Amplifying weak AC-coupled photodiode signals from red/IR LEDs in wearable pulse oximeters. IC Role / Device Role / Timing Role: Dual-channel transimpedance amplifier followed by AC-coupled gain stage and DC restoration. Use Value: 1.3 MHz GBP supports >100 kHz signal bandwidth for motion artifact rejection; low 40 nV/√Hz input noise preserves SNR in sub-µA photocurrents. |
Use Scenario: Conditioning output from NDIR CO₂ detector's thermopile, which produces µV-level differential signals. IC Role / Device Role / Timing Role: High-Z differential amplifier with adjustable gain and offset nulling for baseline calibration. Use Value: 2 nA input offset current prevents drift in high-resistance thermopile bridges; 120 dB channel separation avoids cross-talk between dual-wavelength channels. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM324DT | Higher input offset voltage (±2 mV min vs. ±2 mV min), lower GBP (1.2 MHz), not AEC-Q100 qualified | Limited to commercial-grade industrial controls; lacks extended temp and automotive reliability testing | Select when cost sensitivity outweighs automotive qualification and 0.1 MHz GBP margin is acceptable |
| TSV914IYDT | Higher GBP (8 MHz), rail-to-rail output, lower input offset (1.3 mV typ), but higher supply current (800 µA/amp) | Better for high-speed filtering or fast-settling data acquisition; unsuitable for ultra-low-power battery operation | Choose when bandwidth >2 MHz or RRO output swing is required, and power budget allows >3 mA total |
Compared with LM324DT, LM2902DT offers guaranteed automotive qualification and tighter input offset drift (7 µV/°C vs. 10 µV/°C); compared with TSV914IYDT, it trades bandwidth and output swing for 2.1× lower quiescent current and proven robustness in harsh environments.
Availability
LM2902DT is available at Aetrix Electronics and suitable for automotive cabin control modules, industrial 4–20 mA loop receivers, and portable medical sensor interfaces requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LM2902DT 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 management ICs, analog chips, and MEMS sensors for automotive, industrial, and consumer markets.
The LM2902 product line delivers cost-optimized, high-reliability quad op amps targeting automotive body electronics and industrial process control where extended temperature operation and supply flexibility are critical.
FAQ
What is the maximum supply voltage for LM2902DT in single-supply operation?
The LM2902DT supports single-supply operation from 3 V to 30 V. Absolute maximum rating is 32 V, but continuous operation above 30 V risks exceeding safe operating area limits and is not recommended per DS0506 Rev 10 specifications.
Does LM2902DT support true rail-to-rail output swing?
No. LM2902DT provides rail-to-rail input capability (common-mode range includes VCC−), but its output swing is limited to within ~1.5 V of each rail under 2 kΩ load. At 30 V supply, typical VOH is 27 V and VOL is 20 mV, confirming output does not reach either rail.
Can LM2902DT be used in dual-supply configurations?
Yes. LM2902DT operates with dual supplies from ±1.5 V to ±15 V. Pin 4 serves as VCC− (not ground), and Pin 8 as VCC+, enabling symmetrical biasing for AC-coupled audio or instrumentation applications requiring bipolar signal handling.
Is the exposed pad on QFN16 3x3 wettable flank variant electrically connected?
Per DS0506 Rev 10 page 3, the exposed pad of the QFN16 3x3 wettable flank package may be connected to VCC− or left floating. It is not internally bonded to any signal; grounding it improves thermal performance but is not required for electrical functionality.
LM2902DT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 4
- Output Type:
- Push-Pull
- Slew Rate:
- 0.4V/µs
- Gain Bandwidth Product:
- 800 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 20 nA
- Voltage - Input Offset:
- 2 mV
- Current - Supply:
- 1.5mA (x4 Channels)
- Current - Output / Channel:
- 30 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:
- 14-SO
LM2902DT FAQ
1.How can I place an order for LM2902DT through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2902DT 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 LM2902DT reliable?
The price and inventory of LM2902DT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2902DT is usually 5 days.
3.What payment methods are accepted for LM2902DT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2902DT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2902DT?
LM2902DT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2902DT 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 LM2902DT?
For technical support, including LM2902DT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2902DT requirements.
6.How does Aetrix verify that LM2902DT is sourced from the original manufacturer or authorized distributors?
All LM2902DT 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 LM2902DT meets industry standards.
7.What is the process for return or replacement of LM2902DT?
All LM2902DT units undergo pre-shipment inspection (PSI). If there is an issue with LM2902DT, 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 LM2902DT part is unused and in its original packaging.
Return procedure for LM2902DT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM2902DT Tags
-
LM358DT
STMicroelectronics
-
LM358DR
Texas Instruments
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LM2904DR
Texas Instruments
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LM358ADR
Texas Instruments
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LM2904DGKR
Texas Instruments
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LM324DR
Texas Instruments
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MCP6006T-E/OT
Microchip Technology
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MCP6006UT-E/OT
Microchip Technology
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LM324PWR
Texas Instruments
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LM2902PWR
Texas Instruments
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LM2902DR
Texas Instruments
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LM358P
Texas Instruments
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