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Home > Products > Integrated Circuits (ICs) > Linear > Instrumentation, Op Amps, Buffer Amps

Texas Instruments LP2902N/NOPB

Name: LP2902N/NOPB
Brand: Texas Instruments
SKU: LP2902N/NOPB
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: LP2902N/NOPB

Manufacturer:: Texas Instruments

Category:: Instrumentation, Op Amps, Buffer Amps

Package:: 14-DIP (0.300", 7.62mm)

Datasheet:: LP2902N/NOPB.pdf

Description:: IC OPAMP GP 4 CIRCUIT 14DIP

Quantity:: RFQ Add To RFQ list

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Product details

Overview

LP2902N/NOPB from Texas Instruments is a micropower quad operational amplifier in 14-pin PDIP package, featuring 85 μA typical supply current, 2 mV typical input offset voltage, and rail-to-ground input common-mode range. It operates from 3 V to 26 V single supply and is optimized for battery-powered instrumentation and low-power sensor signal conditioning.

For engineers reviewing the LP2902N/NOPB datasheet, LP2902N/NOPB pinout, LP2902N/NOPB application, or LP2902N/NOPB equivalent, key selection criteria include micropower operation, ground-sensing input capability, CMOS-compatible output drive, and compatibility with legacy LM324-based designs requiring extended temperature range (−40°C to +85°C).

Technical Context

The LP2902N/NOPB integrates four independent, internally compensated op-amps with class-B output stages enabling both sourcing and sinking of up to 10 mA output current. Its input stage supports common-mode voltages down to ground, eliminating need for input biasing in single-supply configurations.

It delivers 70 V/mV minimum open-loop gain at 30 V supply, 90 dB minimum CMRR and PSRR, and 100 kHz gain-bandwidth product - trade-offs optimized for DC-precision and ultra-low quiescent current rather than high-speed AC performance.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage Range	3 V to 26 V single supply - enables direct use in 5 V, 12 V, and 24 V industrial/battery systems without regulation.
Quiescent Current	85 μA typical per amplifier - extends battery life in portable sensors and backup monitoring circuits.
Input Offset Voltage	2 mV typical - ensures <100 μV error in 50 mV full-scale sensor amplification without trimming.
Input Bias Current	2 nA typical - permits high-impedance source interfacing (e.g., pH electrodes, photodiodes) without significant error.
Common-Mode Input Range	0 V to V+ −1.5 V - allows direct connection of grounded sensors and rail-to-rail input signal handling.
Output Voltage Swing	3.6 V min high / 0.7 V max low (at 350 μA load, V+ = 5 V) - supports logic-level interfacing with 3.3 V/5 V CMOS.
Gain-Bandwidth Product	100 kHz - sufficient for DC-coupled instrumentation, filtering, and slow control loops (e.g., temperature PID).

Pinout & Package

LP2902N/NOPB uses a 14-pin plastic dual in-line package (PDIP-N), 0.300-inch wide body, with standard DIP footprint and through-hole mounting. Thermal resistance θ_JA = 140°C/W.

Pin/Terminal	Circuit Role	Design Meaning
1	Output A	Amplifier A output - placed at corner for minimal trace length in feedback layout.
2	Inverting Input A	Input A− - adjacent to Output A (Pin 1) to simplify compact inverting amplifier routing.
3	Non-Inverting Input A	Input A+ - supports unity-gain buffer or differential sensing with grounded reference.
4	V− (GND)	Ground reference - serves as return path for all four amplifiers and bias network.
5	Non-Inverting Input B	Input B+ - identical function to Pin 3; enables multi-channel parallel signal processing.
6	Inverting Input B	Input B− - adjacent to Output B (Pin 7) for matched layout symmetry.
7	Output B	Amplifier B output - corner placement reduces parasitic coupling in multi-op-amp PCBs.
8	Output C	Amplifier C output - pin 8 is shared corner with Pin 1 and Pin 14 for balanced layout.
9	Inverting Input C	Input C− - paired with Output C (Pin 8) to minimize loop area in feedback networks.
10	Non-Inverting Input C	Input C+ - supports independent channel configuration without cross-talk interference.
11	V+	Positive supply - accepts 3–26 V; decoupling capacitor required near Pin 11 for stability.
12	Non-Inverting Input D	Input D+ - enables fourth independent channel for multi-sensor or redundancy applications.
13	Inverting Input D	Input D− - adjacent to Output D (Pin 14) for consistent routing convention across all four amps.
14	Output D	Amplifier D output - completes quad layout with corner placement matching Pins 1, 7, and 8.

Key Features

Feature	Design Value
Micropower operation	85 μA per amplifier enables >1-year battery life in coin-cell-powered sensor nodes.
Rail-to-ground input	0 V common-mode range eliminates level-shifting circuitry for grounded transducers and thermistors.
CMOS logic interface	Output swing to within 0.7 V of GND and 3.6 V of V+ (at 5 V supply) directly drives 3.3 V/5 V digital inputs.
LM324 pin compatibility	Identical pinout and footprint allow drop-in replacement in existing LM324 designs with 10× lower supply current.
Extended temperature range	−40°C to +85°C operation supports industrial automation, automotive cabin electronics, and outdoor IoT devices.

Applications

Portable Sensor Signal Conditioning	Battery Backup Monitoring
Use Scenario: Amplifying low-level outputs from thermistors, strain gauges, or ambient light sensors in handheld meters. IC Role / Device Role / Timing Role: Quad op-amp provides simultaneous gain, filtering, reference buffering, and comparator hysteresis in one package. Use Value: 2 nA input bias current prevents loading of high-Z sensor elements; 85 μA total quiescent current preserves battery capacity over months of standby.	Use Scenario: Monitoring main supply voltage and triggering switchover to backup battery when voltage drops below threshold. IC Role / Device Role / Timing Role: One amplifier acts as precision comparator with hysteresis; others condition battery voltage and temperature signals. Use Value: Rail-to-ground input allows direct sensing of 0 V–5 V supply rails; 2 mV offset ensures accurate 4.85 V trip point without calibration.
Industrial Process Transmitter	Low-Power Data Acquisition Front-End
Use Scenario: Converting 4–20 mA loop current to voltage, isolating sensor signals, and driving analog outputs in field-mounted transmitters. IC Role / Device Role / Timing Role: Configured as current-to-voltage converter, active filter, buffer, and output driver across four channels. Use Value: 26 V max supply accommodates 24 V loop power; 140°C/W θ_JA enables operation in sealed enclosures up to 70°C ambient.	Use Scenario: Preconditioning analog signals from multiple sensors before ADC sampling in edge-node microcontrollers. IC Role / Device Role / Timing Role: Provides programmable gain, anti-alias filtering, reference buffering, and multiplexed signal routing. Use Value: 100 kHz GBW supports 10-bit resolution at 10 kSPS; quad integration reduces board space and interconnect noise vs. discrete op-amps.

Portable Sensor Signal Conditioning

Battery Backup Monitoring

Use Scenario: Amplifying low-level outputs from thermistors, strain gauges, or ambient light sensors in handheld meters.

IC Role / Device Role / Timing Role: Quad op-amp provides simultaneous gain, filtering, reference buffering, and comparator hysteresis in one package.

Use Value: 2 nA input bias current prevents loading of high-Z sensor elements; 85 μA total quiescent current preserves battery capacity over months of standby.

Use Scenario: Monitoring main supply voltage and triggering switchover to backup battery when voltage drops below threshold.

IC Role / Device Role / Timing Role: One amplifier acts as precision comparator with hysteresis; others condition battery voltage and temperature signals.

Use Value: Rail-to-ground input allows direct sensing of 0 V–5 V supply rails; 2 mV offset ensures accurate 4.85 V trip point without calibration.

Industrial Process Transmitter

Low-Power Data Acquisition Front-End

Use Scenario: Converting 4–20 mA loop current to voltage, isolating sensor signals, and driving analog outputs in field-mounted transmitters.

IC Role / Device Role / Timing Role: Configured as current-to-voltage converter, active filter, buffer, and output driver across four channels.

Use Value: 26 V max supply accommodates 24 V loop power; 140°C/W θ_JA enables operation in sealed enclosures up to 70°C ambient.

Use Scenario: Preconditioning analog signals from multiple sensors before ADC sampling in edge-node microcontrollers.

IC Role / Device Role / Timing Role: Provides programmable gain, anti-alias filtering, reference buffering, and multiplexed signal routing.

Use Value: 100 kHz GBW supports 10-bit resolution at 10 kSPS; quad integration reduces board space and interconnect noise vs. discrete op-amps.

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad operational amplifier applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
LM324N/NOPB	Higher 1.5 mA supply current per amplifier; 7 mV max offset; 0°C to +70°C temp range only.	Legacy designs where power budget allows; unsuitable for battery operation or extended temperature environments.	Select LM324N/NOPB only if existing design requires no layout change and power consumption is not constrained.
TLV2464IPW	Lower 600 μA supply current; rail-to-rail I/O; 1.5 MHz GBW; SOIC-14 or TSSOP-14 only - no PDIP option.	Higher-speed, rail-to-rail applications needing better AC response but sacrificing micropower advantage.	Choose TLV2464IPW when signal bandwidth exceeds 100 kHz or output swing beyond 0.7 V above GND is required.

Compared with LM324N/NOPB, LP2902N/NOPB reduces supply current by 94% while maintaining pin compatibility and extending temperature range; compared with TLV2464IPW, it trades bandwidth and rail-to-rail output for 7× lower quiescent current and PDIP availability - making it optimal for ultra-low-power, cost-sensitive, through-hole production.

Availability

LP2902N/NOPB is available at Aetrix Electronics and suitable for portable instrumentation, battery backup monitoring, and industrial process transmitters requiring stable component supply across long-lifecycle programs.

Supply support for LP2902N/NOPB 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, embedded processing, and connectivity solutions with emphasis on reliability, longevity, and broad technical support.

The LP2902N/NOPB belongs to TI's micropower operational amplifier product line, designed specifically for energy-constrained applications where DC precision, ground-sensing capability, and long-term supply stability are critical.

FAQ

What is the maximum operating supply voltage for LP2902N/NOPB?

The LP2902N/NOPB has an absolute maximum supply voltage rating of 26 V (single supply) or ±13 V (dual supply). Its recommended operating range is 3 V to 26 V. Exceeding 26 V risks permanent damage, and operation above this limit is not characterized or guaranteed. Always observe derating guidelines for elevated ambient temperatures using θ_JA = 140°C/W.

Is LP2902N/NOPB pin-compatible with LM324?

Yes, LP2902N/NOPB is pin-for-pin compatible with LM324 in the 14-pin PDIP package. All four amplifier inputs, outputs, and power pins match exactly. This allows direct replacement in existing LM324 designs without PCB modification, delivering immediate 94% reduction in supply current and extended −40°C to +85°C operation.

Can LP2902N/NOPB drive capacitive loads?

LP2902N/NOPB exhibits improved stability margin for capacitive loads compared to LM324 and can reliably drive 50 pF to 1000 pF without external compensation. For loads >1000 pF, a series resistor (typically 100 Ω to 500 Ω) between output and capacitance is recommended to maintain phase margin and prevent oscillation.

What is the input common-mode voltage range of LP2902N/NOPB?

The LP2902N/NOPB supports an input common-mode voltage range from 0 V (ground) to V+ − 1.5 V. This rail-to-ground input capability enables direct interfacing with grounded sensors, single-supply reference dividers, and 0–5 V signal sources without level-shifting circuitry - a key differentiator versus many general-purpose op-amps.

Does LP2902N/NOPB require external compensation?

No, LP2902N/NOPB is internally compensated and does not require external compensation components. Its unity-gain stable design ensures stable operation in standard inverting, non-inverting, and voltage-follower configurations across its full operating voltage and temperature range.

LP2902N/NOPB Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: -

Package/Case:: 14-DIP (0.300", 7.62mm)

Packaging:: Tube

Product Status:: Active

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:: 150µA

Current - Output / Channel:: 10 mA

Voltage - Supply Span (Min):: 3 V

Voltage - Supply Span (Max):: 26 V

Operating Temperature:: -40°C ~ 85°C

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: 14-PDIP

LP2902N/NOPB FAQ

1.How can I place an order for LP2902N/NOPB through Aetrix?

Please submit a Request for Quotation (RFQ) for LP2902N/NOPB 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 LP2902N/NOPB reliable?

The price and inventory of LP2902N/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LP2902N/NOPB is usually 5 days.

3.What payment methods are accepted for LP2902N/NOPB?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP2902N/NOPB transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for LP2902N/NOPB?

LP2902N/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your LP2902N/NOPB 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 LP2902N/NOPB?

For technical support, including LP2902N/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP2902N/NOPB requirements.

6.How does Aetrix verify that LP2902N/NOPB is sourced from the original manufacturer or authorized distributors?

All LP2902N/NOPB 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 LP2902N/NOPB meets industry standards.

7.What is the process for return or replacement of LP2902N/NOPB?

All LP2902N/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LP2902N/NOPB, 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 LP2902N/NOPB part is unused and in its original packaging.

Return procedure for LP2902N/NOPB:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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