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Texas Instruments LP2902D
- Part No.:
- LP2902D
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LP2902D.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:966
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Product details
Overview
LP2902D from Texas Instruments is an ultra-low-power quadruple 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 common-mode range including ground - enabling single-supply operation in portable instrumentation and LCD display biasing circuits.
For engineers reviewing the LP2902D datasheet, LP2902D pinout, LP2902D application, or LP2902D equivalent, key selection criteria include its −40°C to +85°C operating temperature range, SOIC-14 package compatibility with LM324 footprints, low input bias current (2 nA typ), and wide 3 V to 32 V supply voltage capability.
Technical Context
The LP2902D implements four independent high-input-impedance op-amps in a single monolithic IC, each featuring input stages that operate down to ground potential - critical for single-supply sensor signal conditioning. Its architecture prioritizes power efficiency over bandwidth, with 100 kHz gain-bandwidth product and 50 V/ms slew rate under ±15 V conditions.
It supports dual- or single-supply configurations via dedicated VCC+ and VCC− pins, where VCC− may be connected to ground. Input offset voltage drift is specified at 10 μV/°C (0°C to 70°C), and PSRR/CMRR are both ≥75 dB across its full temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply current | 85 μA typical per amplifier - enables multi-year battery life in always-on portable devices |
| Input offset voltage | 2 mV typical at 25°C - ensures <±5 mV error in DC-coupled sensor amplification |
| Input bias current | 2 nA typical - minimizes voltage drop across high-impedance source networks (e.g., thermistors) |
| Supply voltage range | 3 V to 32 V single supply - supports direct integration into 3.3 V, 5 V, 12 V, and 24 V industrial rails |
| Input common-mode range | Includes ground (0 V) - allows direct interfacing with unipolar sensors and microcontroller ADC references |
| Output swing (sinking) | 0.7 V above ground at 350 μA load - sufficient to drive LED indicators or logic-level inputs |
| Gain-bandwidth product | 100 kHz - suitable for DC to audio-frequency signal conditioning, not RF or fast pulse applications |
Pinout & Package
LP2902D is housed in a 14-pin SOIC (D) package, 8.75 mm × 4.0 mm body size, 1.75 mm max height, with 1.27 mm pitch leads. RoHS-compliant, NIPDAU lead finish, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 7, 8, 14 | Output (OUT1–OUT4) | Amplifier output nodes; capable of sourcing 10 mA / sinking 5 mA at room temperature |
| 2, 3, 5, 6, 9, 10, 12, 13 | Input (IN±, IN+) | Differential input pairs per amplifier; all inputs tolerate voltages from ground to VCC−1.5 V |
| 4 | VCC+ | Positive supply rail connection - must be ≥3 V above VCC− for proper operation |
| 11 | VCC− | Negative supply or ground reference - enables true single-supply use when tied to GND |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 85 μA per amplifier - reduces system standby power by >90% vs. standard LM324 (1.2 mA) |
| Ground-sensing inputs | Input common-mode range includes 0 V - eliminates need for level-shifting circuitry in single-supply designs |
| Wide supply voltage tolerance | Operates from 3 V to 32 V - supports direct use across automotive, industrial, and consumer rails without regulation |
| LM324 pin compatibility | Identical SOIC-14 pinout and function mapping - allows drop-in replacement in legacy designs with no PCB change |
| Robust ESD protection | ±350 V HBM rating - exceeds JEDEC JS-001 Class 1A, reducing field failure risk in handling and assembly |
Applications
| Portable Instrumentation | LCD Display Biasing |
|---|---|
Use Scenario: Battery-powered multimeter front-end amplifying mV-level thermocouple or resistance bridge signals. IC Role / Device Role / Timing Role: Quad op-amp performing precision DC amplification, filtering, and level shifting before ADC sampling. Use Value: 2 mV offset and 2 nA bias current preserve measurement accuracy across 0–50°C ambient; 85 μA supply current extends AA-cell life to >2 years. | Use Scenario: Generating stable VCOM and gamma correction voltages for segment-based LCD modules in handheld devices. IC Role / Device Role / Timing Role: Four independent buffers driving resistive divider networks to set analog bias points. Use Value: Rail-to-ground input allows direct referencing to microcontroller DAC outputs; 32 V max supply accommodates backlight driver rails up to 24 V. |
| Sensor Signal Conditioning | Low-Power Power Supply Monitoring |
Use Scenario: Amplifying weak signals from piezoresistive pressure sensors in wearable health monitors. IC Role / Device Role / Timing Role: Instrumentation-grade differential amplifier stage with gain-setting resistors and low-pass filtering. Use Value: 10 μV/°C offset drift ensures <±0.1 °C error contribution over operating range; 85 μA draw avoids loading coin-cell batteries. | Use Scenario: Monitoring 12 V and 5 V rail voltages in IoT gateways using resistor dividers and comparator thresholds. IC Role / Device Role / Timing Role: Quad comparator substitute via open-loop configuration detecting over/under-voltage events. Use Value: 3 V min supply enables monitoring of deeply discharged backup batteries; 32 V max handles transient surges on automotive-derived supplies. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM324DR | Higher 1.2 mA supply current; wider 0°C to 70°C temp range; same SOIC-14 pinout | Not suitable for battery life-critical designs; acceptable for AC-powered instrumentation | Select LM324DR only when speed (1.2 MHz GBW) or cost outweighs power savings |
| TLV2464IDR | Lower 22 μA supply current; rail-to-rail I/O; 6.4 V max supply; TSSOP-14 package | Requires PCB redesign; limited to ≤6.4 V systems; superior for ultra-low-power sub-5 V wearables | Choose TLV2464IDR when supply is ≤5 V and layout revision is feasible |
Compared with LM324DR and TLV2464IDR, LP2902D uniquely balances ultra-low power (85 μA), wide supply range (3–32 V), and full LM324 pin compatibility - making it the optimal choice for upgrading legacy 12/24 V portable equipment without board changes.
Availability
LP2902D 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 long production lifecycles.
Supply support for LP2902D 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 power-efficient signal chains.
The LP2902D belongs to TI's ultra-low-power op-amp family designed specifically for battery-constrained applications where extended runtime, ground-referenced inputs, and industrial temperature operation are mandatory design requirements.
FAQ
What is the maximum operating temperature range for the LP2902D?
The LP2902D is rated for operation from −40°C to +85°C ambient temperature. This industrial-grade range is confirmed in the device's Recommended Operating Conditions table and applies specifically to the LP2902D variant - distinct from the LP324 (0°C to 70°C). Thermal derating begins above 85°C ambient per the junction-to-ambient thermal resistance (140°C/W for SOIC).
Is the LP2902D pin-compatible with the LM324?
Yes, the LP2902D is fully pin-compatible with the LM324 in SOIC-14 packaging. Pin functions - including VCC+, VCC−, all four input pairs, and four outputs - match identically. This allows direct substitution in existing LM324-based layouts without PCB modification, provided the wider supply range (3–32 V) and lower power consumption are accounted for in system-level validation.
What is the typical input offset voltage specification for the LP2902D?
The LP2902D has a typical input offset voltage of 2 mV at 25°C, with a maximum of 4 mV under standard test conditions. Over the full −40°C to +85°C operating range, the maximum offset is specified at 10 mV. This value is measured per amplifier unit and is critical for DC-coupled applications such as precision sensor amplification or reference buffering in the LP2902D.
Does the LP2902D support true single-supply operation?
Yes, the LP2902D supports true single-supply operation because its input common-mode voltage range includes ground (0 V), and its output can swing within ~0.7 V of ground when sinking current. When VCC− is tied to GND and VCC+ is supplied with 3–32 V, all four amplifiers function correctly - eliminating the need for split supplies in battery-powered systems using the LP2902D.
What package type is used for the LP2902D?
The LP2902D uses a 14-pin SOIC (Small Outline Integrated Circuit) package, designated as "D" in TI's packaging nomenclature. Its mechanical dimensions are 8.75 mm × 4.0 mm body size, 1.27 mm lead pitch, and 1.75 mm maximum height. The part marking on the top surface reads "LP2902", consistent with TI's SOIC-14 ordering conventions for the LP2902D.
LP2902D Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Bulk
- 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 (x4 Channels)
- Current - Output / Channel:
- 10 mA
- Voltage - Supply Span (Min):
- 3 V
- Voltage - Supply Span (Max):
- 32 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
LP2902D FAQ
1.How can I place an order for LP2902D through Aetrix?
Please submit a Request for Quotation (RFQ) for LP2902D 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 LP2902D reliable?
The price and inventory of LP2902D are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LP2902D is usually 5 days.
3.What payment methods are accepted for LP2902D?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP2902D transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LP2902D?
LP2902D orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LP2902D 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 LP2902D?
For technical support, including LP2902D datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP2902D requirements.
6.How does Aetrix verify that LP2902D is sourced from the original manufacturer or authorized distributors?
All LP2902D 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 LP2902D meets industry standards.
7.What is the process for return or replacement of LP2902D?
All LP2902D units undergo pre-shipment inspection (PSI). If there is an issue with LP2902D, 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 LP2902D part is unused and in its original packaging.
Return procedure for LP2902D:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LP2902D Tags
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LM358DT
STMicroelectronics
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LM358DR
Texas Instruments
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LM2904DR
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LM358ADR
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LM2904DGKR
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LM324DR
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MCP6006T-E/OT
Microchip Technology
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MCP6006UT-E/OT
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LM324PWR
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LM2902PWR
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LM2902DR
Texas Instruments
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LM358P
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