My Inquiry
My Account
Texas Instruments LP2902M
- Part No.:
- LP2902M
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LP2902M.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,141
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LP2902M from Texas Instruments is a micropower quad operational amplifier optimized for single-supply battery-powered systems, featuring 85 μA typical supply current, 2 mV typical input offset voltage, and rail-to-ground input common-mode range - enabling precision sensing and signal conditioning in portable instrumentation and low-power sensor interfaces.
For engineers reviewing the LP2902M datasheet, LP2902M pinout, LP2902M application, or LP2902M equivalent, key selection criteria include its −40°C to +85°C operating temperature range, SOIC-14 package compatibility, 26 V absolute maximum supply voltage, and guaranteed micropower performance across full industrial temperature range.
Technical Context
The LP2902M integrates four independent, internally compensated op-amps with class-B output stages capable of sourcing up to 30 mA and sinking up to 45 mA per channel. Its input stage supports true-differential operation down to ground (VCM = 0 V), enabling direct interfacing with CMOS logic and unipolar sensors without level-shifting.
Designed as a low-power upgrade to LM324, the LP2902M reduces supply current by 10× while retaining pin compatibility and wide 3 V to 26 V supply range. It delivers 100 kHz gain-bandwidth product and 50 V/ms slew rate - sufficient for DC-critical, low-frequency signal conditioning but not high-speed AC applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3 V to 26 V - supports single-cell Li-ion, dual-AA, and industrial 24 V rails without regulation |
| Quiescent Current (per amp) | 85 μA typ - enables multi-year battery life in always-on sensor nodes and backup monitoring circuits |
| Input Offset Voltage | 2 mV typ (max 10 mV) - ensures <0.1% error in 2 V full-scale analog front-ends |
| Input Bias Current | 2 nA typ - minimizes voltage drop across high-impedance sources (e.g., pH electrodes, photodiodes) |
| Common-Mode Input Range | 0 V to V+−1.5 V - allows direct connection of grounded sensors and single-supply transducer interfaces |
| Output Voltage Swing | 0.7 V above GND / 1.9 V below V+ - delivers usable dynamic range near supply rails in 3.3 V or 5 V systems |
| Gain-Bandwidth Product | 100 kHz - suitable for anti-aliasing filters, low-frequency integrators, and DC-stable closed-loop gains ≤100 |
Pinout & Package
LP2902M is housed in a 14-pin SOIC (D) package (JEDEC MS-012 AB), 8.75 mm × 4.0 mm footprint, 1.75 mm max height, with standard 1.27 mm lead pitch and gull-wing leads. Pin 1 is marked by a beveled corner or notch on the package top edge.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Output A | Amplifier A output - placed at corner for minimal trace length in feedback loops |
| 2 | Inverting Input A | Directly adjacent to Output A (Pin 1) to reduce parasitic capacitance in high-gain configurations |
| 3 | Non-Inverting Input A | Supports ground-referenced inputs; no external bias required in single-supply mode |
| 4 | V− (GND) | Ground reference for all amplifiers - shared return path for quiescent current and output loads |
| 5 | Non-Inverting Input B | Enables independent sensor channel buffering without cross-talk via shared ground |
| 6 | Inverting Input B | Paired with Output B (Pin 7) for compact layout of second amplifier stage |
| 7 | Output B | Amplifier B output - corner placement simplifies routing to ADC input or next-stage filter |
| 8 | V+ (Supply) | Positive supply rail - decoupling capacitor must be placed within 5 mm for stability |
| 9 | Output C | Amplifier C output - supports multi-channel signal conditioning (e.g., 3-phase current sensing) |
| 10 | Inverting Input C | Adjacent to Output C (Pin 9); enables local feedback without crossing traces over other channels |
| 11 | Non-Inverting Input C | Accepts 0 V–V+ signals directly - eliminates need for resistor dividers in thermistor or RTD interfaces |
| 12 | Non-Inverting Input D | Fourth channel input - allows simultaneous monitoring of reference, supply, and two sensor outputs |
| 13 | Inverting Input D | Paired with Output D (Pin 14); maintains consistent layout symmetry across all four op-amps |
| 14 | Output D | Amplifier D output - corner location eases connection to comparator or DAC reference buffer |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-ground input common-mode range | Enables direct interface with 0 V-referenced transducers (e.g., load cells, thermocouples with cold-junction compensation) without external bias networks |
| 85 μA per amplifier supply current | Reduces total quiescent draw to 340 μA for all four channels - critical for coin-cell-powered IoT endpoints |
| Pin-for-pin compatible with LM324 | Allows drop-in replacement in legacy designs without PCB rework, preserving existing layout and bill-of-materials |
| 2 nA typical input bias current | Minimizes offset drift in high-impedance pH probe or piezoelectric sensor amplifiers where leakage dominates error |
| −40°C to +85°C operating range | Validated for industrial environments including automotive cabin modules, smart meters, and outdoor sensor enclosures |
Applications
| Portable Gas Sensor Interface | Battery-Powered Data Logger |
|---|---|
|
Use Scenario: Amplifying low-level current output from electrochemical CO sensors powered by CR2032 coin cell. IC Role / Device Role / Timing Role: LP2902M configured as transimpedance amplifier and reference buffer for 12-bit SAR ADC. Use Value: 2 nA input bias current prevents sensor current loss; 85 μA quiescent current extends 10-year battery life target. |
Use Scenario: Signal conditioning for thermistor, humidity, and barometric pressure sensors in field-deployed environmental monitor. IC Role / Device Role / Timing Role: LP2902M provides rail-to-ground input buffering, differential amplification, and reference voltage generation. Use Value: Input common-mode range to GND eliminates level-shifting components; quad integration reduces board space by 60% vs discrete solutions. |
| Industrial PLC Analog Input Module | Medical Wearable Front-End |
|
Use Scenario: Isolated 4–20 mA loop receiver with cold-junction compensation for thermocouple inputs in factory automation. IC Role / Device Role / Timing Role: LP2902M serves as I/V converter, linearizer, and sensor excitation buffer in 24 V-powered module. Use Value: 26 V absolute max supply rating accommodates 24 V system transients; 2 mV offset ensures <0.05% measurement accuracy. |
Use Scenario: Biopotential signal acquisition (ECG/EMG) in ultra-low-power wearable patch using single 3.7 V LiPo cell. IC Role / Device Role / Timing Role: LP2902M implements high-pass filtering, gain staging, and electrode biasing in analog front-end. Use Value: Rail-to-ground inputs accept electrode voltages near 0 V; micropower operation enables >7-day continuous monitoring per charge. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM324DR | 1.5 mA per amplifier supply current (18× higher), 7 mV max VOS, 0°C to +70°C temp range only | Higher power dissipation limits use in battery systems; wider VOS tolerance reduces DC accuracy in precision sensing | Select LM324DR only when cost is primary constraint and thermal/power budgets allow higher quiescent draw |
| LP324M/NOPB | Identical electrical specs but rated for 0°C to +70°C only; same SOIC-14 package and pinout | Not qualified for extended industrial temperature range; unsuitable for automotive or outdoor deployments | Choose LP324M/NOPB only for commercial-grade applications where ambient temperature stays within 0–70°C |
Compared with LM324DR and LP324M/NOPB, the LP2902M uniquely combines industrial temperature range (−40°C to +85°C), micropower operation (85 μA), and rail-to-ground inputs - making it the sole option for battery-powered industrial sensors requiring long-term reliability across temperature extremes.
Availability
LP2902M is available at Aetrix Electronics and suitable for portable instrumentation, battery-backed monitoring systems, and industrial analog input modules requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for LP2902M 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 specializing in analog and embedded processing technologies, with decades of expertise in precision amplifiers and low-power signal chain solutions.
The LP2902M belongs to TI's micropower operational amplifier family, engineered specifically for energy-constrained applications demanding high DC accuracy, rail-to-ground operation, and robust industrial temperature performance.
FAQ
What is the maximum supply voltage for LP2902M?
The LP2902M has an absolute maximum supply voltage of 26 V (or ±13 V). Operation beyond this limit risks permanent damage. The recommended operating range is 3 V to 26 V, with full electrical specifications guaranteed across this span. Exceeding 26 V - even briefly - may trigger internal junction breakdown, especially under elevated temperature conditions.
Does LP2902M support single-supply operation with inputs at ground?
Yes, the LP2902M supports true single-supply operation with input common-mode voltage extending to GND (0 V). This is explicitly confirmed in the datasheet's "Input Vommon Mode to GND" feature and Electrical Characteristics table (VCM min = 0 V). No external biasing is required for ground-referenced sensors, simplifying design of battery-powered front-ends.
Is LP2902M pin-compatible with LM324?
Yes, the LP2902M is pin-for-pin compatible with the LM324, as stated in the datasheet's FEATURES section and APPLICATION HINTS. Both devices use identical SOIC-14 (D), PDIP-14 (N), and TSSOP-14 (PW) packages with matching pin assignments. This allows direct substitution in existing LM324 layouts without PCB modification.
What is the operating temperature range for LP2902M?
The LP2902M is specified for operation from −40°C to +85°C, as documented in the Operating Conditions table. This industrial temperature range is validated across all electrical parameters and distinguishes it from the LP324-N (0°C to +70°C). Thermal derating applies above 25°C per θJA = 140°C/W for SOIC package.
Can LP2902M drive capacitive loads without oscillation?
The LP2902M exhibits improved stability margin for driving capacitive loads compared to LM324, supporting 50 pF to 1000 pF loads without external compensation, per the APPLICATION HINTS section. However, slew rate (50 V/ms) and GBW (100 kHz) are reduced versus LM324 - so high-frequency stability must still be verified in final layout with actual load and parasitics.
LP2902M Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- 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:
- 0.05V/µs
- Gain Bandwidth Product:
- 100 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 2 nA
- Voltage - Input Offset:
- 2 mV
- Current - Supply:
- 85µA
- Current - Output / Channel:
- 10 mA
- Voltage - Supply Span (Min):
- 3 V
- Voltage - Supply Span (Max):
- 26 V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
LP2902M FAQ
1.How can I place an order for LP2902M through Aetrix?
Please submit a Request for Quotation (RFQ) for LP2902M 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 LP2902M reliable?
The price and inventory of LP2902M are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LP2902M is usually 5 days.
3.What payment methods are accepted for LP2902M?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP2902M transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LP2902M?
LP2902M orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LP2902M 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 LP2902M?
For technical support, including LP2902M datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP2902M requirements.
6.How does Aetrix verify that LP2902M is sourced from the original manufacturer or authorized distributors?
All LP2902M 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 LP2902M meets industry standards.
7.What is the process for return or replacement of LP2902M?
All LP2902M units undergo pre-shipment inspection (PSI). If there is an issue with LP2902M, 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 LP2902M part is unused and in its original packaging.
Return procedure for LP2902M:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LP2902M Tags
-
LM358DT
STMicroelectronics
-
LM358DR
Texas Instruments
-
LM2904DR
Texas Instruments
-
LM358ADR
Texas Instruments
-
LM2904DGKR
Texas Instruments
-
LM324DR
Texas Instruments
-
MCP6006T-E/OT
Microchip Technology
-
MCP6006UT-E/OT
Microchip Technology
-
LM324PWR
Texas Instruments
-
LM2902PWR
Texas Instruments
-
LM2902DR
Texas Instruments
-
LM358P
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
