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Texas Instruments LP2902N
- Part No.:
- LP2902N
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-DIP (0.300", 7.62mm)
- Datasheet:
-
LP2902N.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14DIP
- Quantity:
- Payment:
- Shipping:
Inventory:519
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Product details
Overview
LP2902N from Texas Instruments is a quadruple ultra-low-power operational amplifier optimized for battery-operated systems. It delivers 85 μA typical supply current, 2 mV typical input offset voltage, and rail-to-rail input operation down to ground - enabling precision signal conditioning in portable instrumentation and LCD display biasing circuits.
For engineers reviewing the LP2902N datasheet, LP2902N pinout, LP2902N application, or LP2902N equivalent, key selection criteria include its −40°C to +85°C operating range, PDIP-14 package compatibility with legacy LM324 layouts, single-supply capability, and verified performance at 3–32 V supply rails.
Technical Context
The LP2902N implements four independent high-input-impedance op-amps with input common-mode range extending to ground - critical for single-supply sensor front-ends. Its architecture prioritizes low quiescent current over bandwidth, achieving only 100 kHz gain-bandwidth product and 50 V/ms slew rate.
It supports dual- or single-supply operation (±16 V or 3–32 V), features 80–90 dB PSRR and CMRR, and maintains stable output swing within 1.9 V of each rail under load - making it suitable for DC-coupled, low-speed analog stages where power efficiency outweighs speed requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply current | 85 μA typical per amplifier - enables multi-day battery life in coin-cell-powered devices |
| Input offset voltage | 2 mV typical - supports accurate DC amplification without frequent nulling in sensor interfaces |
| Input bias current | 2 nA typical - minimizes error in high-impedance source applications like photodiode amps |
| Supply voltage range | 3 V to 32 V single supply - accommodates wide input sources including 9 V batteries and industrial 24 V rails |
| Input common-mode range | Includes ground (0 V) - allows direct interfacing with unipolar sensors and microcontroller ADC references |
| Output voltage swing | (VCC − 1.9 V) min high-side, 1 V max low-side - provides usable dynamic range in 5 V or 12 V systems |
| Gain-bandwidth product | 100 kHz - sufficient for filtering, level-shifting, and slow control loops but not audio or fast pulse signals |
Pinout & Package
LP2902N is housed in a 14-pin plastic dual in-line package (PDIP), with 0.3-inch body width, 0.1-inch lead pitch, and through-hole mounting compatibility. Pin 1 is marked by a notch or dot at the top-left corner when viewed from the top with the notch facing up.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1IN−, 2IN−, 3IN−, 4IN− | Inverting input | Negative input terminals for each of the four op-amps; accept differential or single-ended signals |
| 1IN+, 2IN+, 3IN+, 4IN+ | Non-inverting input | Positive input terminals; support rail-to-rail common-mode operation down to ground |
| 1OUT, 2OUT, 3OUT, 4OUT | Output | Amplified output nodes; capable of sourcing/sinking ≥4 mA while maintaining specified swing |
| VCC+ | Positive supply | Primary power rail connection; accepts 3–32 V for single-supply or highest rail in dual-supply mode |
| VCC− | Negative supply / ground | Lowest supply node; tied to GND in single-supply configurations; accepts −16 V in dual-supply use |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 85 μA per amplifier - reduces system standby power by >90% versus standard LM324 (1.5 mA) |
| Rail-to-rail input (to ground) | Common-mode range includes 0 V - eliminates need for negative supply in single-ended sensor interfaces |
| Pin-compatible with LM324 | Same 14-pin PDIP footprint and pin functions - enables drop-in replacement in existing designs |
| Wide supply voltage range | 3–32 V single supply - supports direct integration into both low-voltage portable and industrial 24 V systems |
| High PSRR/CMRR | ≥75 dB over full temperature range - rejects noise from shared power rails and common-mode interference in noisy environments |
Applications
| Portable Instrumentation | LCD Display Biasing |
|---|---|
Use Scenario: Battery-powered handheld multimeter measuring DC voltage and resistance. IC Role / Device Role / Timing Role: LP2902N serves as input buffer, reference amplifier, and auto-zero correction stage in the analog front-end. Use Value: 85 μA supply current extends battery life to >1 year on two AA cells; 2 mV offset ensures <0.1% measurement error without calibration. | Use Scenario: Segment driver circuit for monochrome STN LCD panel in medical device display. IC Role / Device Role / Timing Role: LP2902N generates precise bias voltages (VCOM, VON, VOFF) from a single 5 V rail. Use Value: Input common-mode to ground enables direct generation of 0 V reference; rail-compatible output swing ensures stable contrast across temperature. |
| Sensor Signal Conditioning | Low-Power Power Supply Monitoring |
Use Scenario: Thermistor-based temperature sensing in wireless environmental sensor node. IC Role / Device Role / Timing Role: LP2902N configures as precision non-inverting amplifier and low-pass filter for analog signal chain. Use Value: 2 nA input bias current prevents thermistor self-heating errors; 80 dB CMRR suppresses EMI from nearby RF modules. | Use Scenario: Voltage supervision and undervoltage lockout in solar-charged IoT gateway. IC Role / Device Role / Timing Role: LP2902N operates as comparator and reference buffer in 3.3 V LDO monitoring circuit. Use Value: Wide 3–32 V supply range allows direct connection to unregulated battery input; 2 mV offset ensures ±10 mV trip-point accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM324N | Higher 1.5 mA supply current; wider −25°C to +85°C temp range; same PDIP-14 pinout | Not suitable for multi-year battery life; better for AC-powered or short-duty-cycle systems | Select LM324N when cost is primary and power budget exceeds 100 μA per channel |
| LP324N | Identical electrical specs but rated for 0°C to +70°C ambient; same PDIP-14 package | Limited to commercial-grade environments; unsuitable for automotive or industrial outdoor deployment | Choose LP324N only for indoor consumer electronics with controlled thermal conditions |
Compared with LM324N and LP324N, the LP2902N uniquely combines industrial temperature range (−40°C to +85°C) with ultra-low 85 μA supply current - making it the sole option among these three for long-life, wide-temperature, battery-critical applications.
Availability
LP2902N is available at Aetrix Electronics and suitable for portable instrumentation, LCD display biasing, and sensor signal conditioning requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for LP2902N 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, embedded processing, and connectivity technologies, with decades of expertise in precision op-amps and low-power design.
The LP2902N belongs to TI's ultra-low-power operational amplifier product line, engineered specifically for battery-constrained applications demanding extended runtime, wide supply flexibility, and robust DC precision without sacrificing reliability.
FAQ
What is the maximum operating temperature for the LP2902N?
The LP2902N is rated for operation from −40°C to +85°C ambient temperature. This industrial-grade range is confirmed in the "Recommended Operating Conditions" table of the official TI datasheet (SLOS460B), and distinguishes it from the commercial-grade LP324N (0°C to +70°C). The LP2902N maintains all specified electrical characteristics across this full range.
Is the LP2902N pin-compatible with the LM324 series?
Yes, the LP2902N is fully pin-compatible with the LM324 family in PDIP-14 packaging. Pin assignments - including all four amplifier inputs/outputs and dual supply connections - match identically. This allows direct substitution in existing LM324-based PCBs without layout changes, provided the lower supply current and offset voltage of the LP2902N are acceptable for the application.
What is the typical supply current of the LP2902N per amplifier?
The LP2902N draws 85 μA typical supply current per amplifier at 25°C and 5 V supply, as specified in Section 5.5 of the TI datasheet. Over the full −40°C to +85°C range, maximum supply current remains ≤275 μA per amplifier, ensuring predictable battery drain in energy-sensitive designs.
Does the LP2902N support single-supply operation?
Yes, the LP2902N supports true single-supply operation. Its input common-mode voltage range includes ground (0 V), and its outputs swing within 1.9 V of the positive rail and down to 1 V above ground under load - enabling functional operation from a single 3–32 V rail without negative supply or level-shifting circuitry.
What package options are available for the LP2902N?
The LP2902N is offered exclusively in the 14-pin plastic dual in-line package (PDIP-N), with part marking "LP2902N" and tube packaging (25 units per tube). Unlike other variants (e.g., LP2902DR in SOIC or LP2902PWR in TSSOP), the "N" suffix denotes this through-hole PDIP configuration, which is RoHS-compliant with NiPdAu lead finish.
LP2902N Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-DIP (0.300", 7.62mm)
- Packaging:
- Bulk
- 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 FAQ
1.How can I place an order for LP2902N through Aetrix?
Please submit a Request for Quotation (RFQ) for LP2902N 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 reliable?
The price and inventory of LP2902N are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LP2902N is usually 5 days.
3.What payment methods are accepted for LP2902N?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP2902N transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LP2902N?
LP2902N orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LP2902N 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?
For technical support, including LP2902N datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP2902N requirements.
6.How does Aetrix verify that LP2902N is sourced from the original manufacturer or authorized distributors?
All LP2902N 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 meets industry standards.
7.What is the process for return or replacement of LP2902N?
All LP2902N units undergo pre-shipment inspection (PSI). If there is an issue with LP2902N, 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 part is unused and in its original packaging.
Return procedure for LP2902N:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LP2902N 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
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