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Texas Instruments LM2902M
- Part No.:
- LM2902M
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LM2902M.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,550
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Product details
Overview
LM2902M from Texas Instruments is a low-power, quad operational amplifier designed for single-supply operation across 3 V to 26 V. It delivers 1 MHz unity-gain bandwidth, 100 dB DC voltage gain, and rail-to-rail input common-mode range including ground - enabling direct sensing of 0 V referenced signals in battery-powered instrumentation, sensor interfaces, and industrial control systems.
For engineers reviewing the LM2902M datasheet, LM2902M pinout, LM2902M application, or LM2902M equivalent, this page provides verified specifications, validated pin functions, confirmed thermal and electrical behavior at −40°C to +85°C, and real-world implementation guidance for transducer amplification, DC gain blocks, and single-supply analog signal conditioning.
Technical Context
The LM2902M uses a PNP-input stage enabling true ground-sensing capability and differential input voltage tolerance up to the full supply rail (V+). Its internal frequency compensation ensures stable unity-gain operation without external components, while temperature-compensated bias current (45 nA typ.) and offset voltage (2 mV typ.) maintain accuracy across wide supply and temperature ranges.
It operates in class-A for small-signal linearity and transitions to class-B under large-signal load conditions to sustain ±40 mA output current capability. Input clamp diodes are omitted - allowing differential inputs beyond V+ - but require external protection against input voltages below −0.3 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3 V to 26 V single supply (or ±1.5 V to ±13 V dual); supports direct interface with 5 V digital logic rails |
| Unity-Gain Bandwidth | 1 MHz typical; enables stable AC-coupled amplification up to audio frequencies with minimal phase shift |
| DC Voltage Gain | 100 dB typical; provides >100,000× open-loop gain for precision DC amplification and error correction |
| Input Offset Voltage | 2 mV max at 25°C; ensures ≤2 mV baseline error in sensor front-ends without trimming |
| Supply Current per Amplifier | 700 μA typical at 5 V; enables four-channel analog signal processing in power-constrained systems |
| Input Common-Mode Range | 0 V to V+ −1.5 V; allows direct connection of ground-referenced sensors without level-shifting circuitry |
| Output Voltage Swing | 0 V to V+ −1.5 V (RL ≥2 kΩ); delivers near-rail output drive into moderate loads |
| Operating Temperature | −40°C to +85°C junction; qualified for industrial and automotive cabin environments |
Pinout & Package
LM2902M is available in SOIC-14 (8.65 mm × 3.91 mm) and TSSOP-14 (5.00 mm × 4.40 mm) packages. Pin numbering follows standard 14-pin IC layout with notch or dot marking Pin 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUTPUT1 | Amplifier 1 output; drives external load or feedback network |
| 2 | INPUT1− | Inverting input of Amp 1; accepts feedback or inverted signal path |
| 3 | INPUT1+ | Noninverting input of Amp 1; connects to sensor, reference, or signal source |
| 4 | V+ | Positive supply rail; powers all four amplifiers; decoupling capacitor required |
| 5 | INPUT2+ | Noninverting input of Amp 2; independent channel for multi-signal conditioning |
| 6 | INPUT2− | Inverting input of Amp 2; supports differential or inverting configurations |
| 7 | OUTPUT2 | Amplifier 2 output; electrically isolated from other outputs |
| 8 | OUTPUT3 | Amplifier 3 output; shares no internal nodes with other channels |
| 9 | INPUT3− | Inverting input of Amp 3; enables third independent gain stage |
| 10 | INPUT3+ | Noninverting input of Amp 3; supports ground-referenced input signals |
| 11 | GND | Ground or negative supply; return path for all four amplifiers and bias networks |
| 12 | INPUT4+ | Noninverting input of Amp 4; accommodates fourth sensor or signal path |
| 13 | INPUT4− | Inverting input of Amp 4; configurable as comparator or active filter node |
| 14 | OUTPUT4 | Amplifier 4 output; fully functional with same specs as other channels |
Key Features
| Feature | Design Value |
|---|---|
| Internally compensated unity-gain stability | Eliminates need for external compensation capacitors in standard gain configurations |
| Input common-mode range includes ground | Enables direct interfacing with 0 V–referenced transducers (e.g., thermocouples, strain gauges) |
| Low quiescent current (700 μA total) | Supports four-channel analog signal processing in battery-operated devices with >1-year runtime |
| Differential input voltage range = supply voltage | Accepts input overvoltage up to V+ without damage or clamping artifacts |
| Output swing to ground (0 V) | Permits true single-supply operation in level-shifting, comparator, and LED driver circuits |
| Temperature-compensated input bias current | Maintains consistent input loading across −40°C to +85°C, critical for stable sensor biasing |
Applications
| Transducer Amplifier | DC Gain Block |
|---|---|
Use Scenario: Amplifying low-level output from a resistive pressure sensor operating from a 5 V microcontroller rail. IC Role / Device Role / Timing Role: LM2902M serves as a non-inverting DC-coupled gain stage with G = 100, referenced to system ground. Use Value: Delivers 2 mV input offset-limited accuracy and 0 V–to–3.5 V output swing into 10 kΩ load without external level-shifting. | Use Scenario: Building a programmable gain stage for analog front-end of an industrial data logger. IC Role / Device Role / Timing Role: LM2902M implements fixed-gain instrumentation path for 4–20 mA loop receiver output scaling. Use Value: 100 dB open-loop gain ensures <0.1% gain error with 1% feedback resistors; 1 MHz bandwidth supports step-response settling in <1 μs. |
| Sensor Interface for MCU | Single-Supply Comparator |
Use Scenario: Conditioning thermistor voltage divider output before ADC sampling on an ARM Cortex-M0+. IC Role / Device Role / Timing Role: LM2902M acts as buffer and level translator, driving 12-bit SAR ADC input directly from 3.3 V rail. Use Value: Input common-mode range down to 0 V eliminates need for bias resistors; 700 μA supply current minimizes impact on system power budget. | Use Scenario: Implementing window comparator for overvoltage/undervoltage detection on a 12 V battery monitor. IC Role / Device Role / Timing Role: Two LM2902M amplifiers configured as high/low threshold comparators with hysteresis. Use Value: Rail-to-ground output swing ensures clean TTL-compatible logic levels; 40 mA sink/source capability drives LED indicators directly. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM324M | Wider temp range (0°C to +70°C vs. −40°C to +85°C); higher input offset (7 mV max); lower CMRR (65 dB) | Restricted to commercial-grade consumer electronics; unsuitable for extended-temperature industrial use | Select LM324M only for cost-sensitive, ambient-temperature applications where extended temp rating is unnecessary |
| TLV2464IDR | Rail-to-rail I/O; 6.4 MHz GBW; 550 μA per amp; lower offset (2.5 mV max); higher cost | Required for high-speed or rail-to-rail output swing beyond V+ −1.5 V; not drop-in compatible due to different pinout | Choose TLV2464IDR when signal chain demands >1 MHz bandwidth or true rail-to-rail output, accepting layout change |
Compared with LM324M, LM2902M offers extended temperature operation and tighter offset spec; compared with TLV2464IDR, it trades bandwidth and rail-to-rail output for lower cost, proven reliability, and pin compatibility with legacy designs.
Availability
LM2902M is available at Aetrix Electronics and suitable for industrial sensor interfaces, battery-powered instrumentation, and automotive cabin control modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LM2902M 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
Texas Instruments is a global semiconductor leader delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.
The LM2902M belongs to TI's legacy low-power quad op amp product line, engineered specifically for robust, cost-effective single-supply analog signal conditioning in harsh industrial environments.
FAQ
What is the maximum supply voltage for LM2902M?
The absolute maximum supply voltage for LM2902M is 32 V, but its recommended operating range is 3 V to 26 V for single-supply use. Exceeding 26 V may degrade parametric performance or reliability, especially at elevated temperatures. The LM2902M datasheet specifies 26 V as the upper limit for guaranteed operation across the full −40°C to +85°C junction temperature range, aligning with its industrial qualification profile.
Does LM2902M support rail-to-rail input?
LM2902M supports rail-to-rail input common-mode voltage down to ground (0 V), but not up to V+. Its input common-mode range extends from 0 V to V+ −1.5 V at 25°C. This allows direct connection of ground-referenced sensors while maintaining linear operation - a key advantage over older op amps that require input biasing. However, inputs must not exceed V+ −1.5 V to avoid phase reversal or increased offset error.
Can LM2902M be used as a comparator?
Yes, LM2902M can be used as a comparator in non-critical applications, though it lacks dedicated comparator features like internal hysteresis or fast propagation delay. Its 1 MHz bandwidth and 100 dB open-loop gain enable reliable decision-making for slow-varying signals (e.g., temperature thresholds). For LM2902M, ensure output loading remains within ±40 mA and avoid sustained saturation to prevent excessive power dissipation in the output stage.
What is the typical input bias current of LM2902M?
The typical input bias current of LM2902M is 45 nA at 25°C, with a maximum of 250 nA across the full −40°C to +85°C operating range. This value is temperature-compensated, meaning it remains relatively stable versus ambient changes - a critical feature for precision sensor interfaces where input impedance loading must stay predictable. The PNP input stage causes current to flow *out* of the inputs, which affects bias resistor selection in high-impedance circuits.
Is LM2902M pin-compatible with LM324M?
Yes, LM2902M is pin-compatible with LM324M in SOIC-14 and TSSOP-14 packages - both share identical 14-pin layouts, terminal functions, and footprint dimensions. However, LM2902M offers extended temperature range (−40°C to +85°C vs. 0°C to +70°C), tighter input offset voltage (2 mV vs. 7 mV max), and improved common-mode rejection (50 dB min vs. 65 dB min), making it a direct upgrade for industrial designs without PCB revision.
LM2902M Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LinCMOS™
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 4
- Output Type:
- -
- Slew Rate:
- -
- Gain Bandwidth Product:
- 1 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 45 nA
- Voltage - Input Offset:
- 2 mV
- Current - Supply:
- 1.5mA
- Current - Output / Channel:
- 40 mA
- Voltage - Supply Span (Min):
- 3 V
- Voltage - Supply Span (Max):
- 32 V
- Operating Temperature:
- -40°C ~ 85°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
LM2902M FAQ
1.How can I place an order for LM2902M through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2902M 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 LM2902M reliable?
The price and inventory of LM2902M are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2902M is usually 5 days.
3.What payment methods are accepted for LM2902M?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2902M transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2902M?
LM2902M orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2902M 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 LM2902M?
For technical support, including LM2902M datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2902M requirements.
6.How does Aetrix verify that LM2902M is sourced from the original manufacturer or authorized distributors?
All LM2902M 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 LM2902M meets industry standards.
7.What is the process for return or replacement of LM2902M?
All LM2902M units undergo pre-shipment inspection (PSI). If there is an issue with LM2902M, 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 LM2902M part is unused and in its original packaging.
Return procedure for LM2902M:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM2902M Tags
-
LM358DT
STMicroelectronics
-
LM358DR
Texas Instruments
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LM2904DR
Texas Instruments
-
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
-
MCP6006UT-E/OT
Microchip Technology
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LM324PWR
Texas Instruments
-
LM2902PWR
Texas Instruments
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LM2902DR
Texas Instruments
-
LM358P
Texas Instruments
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