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Texas Instruments LP2902MX/NOPB
- Part No.:
- LP2902MX/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LP2902MX/NOPB.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,118
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Product details
Overview
LP2902MX/NOPB from Texas Instruments is a micropower quad operational amplifier in SOIC-14 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 LP2902MX/NOPB datasheet, LP2902MX/NOPB pinout, LP2902MX/NOPB application, or LP2902MX/NOPB equivalent, key selection criteria include micropower operation under 100 μA, ground-sensing input capability, CMOS logic compatibility, and −40°C to +85°C industrial temperature range.
Technical Context
The LP2902MX/NOPB implements four independent, internally compensated high-gain op-amps with class-B output stages enabling both sourcing and sinking. Its input stage supports common-mode voltages down to ground, eliminating need for input biasing in single-supply configurations.
It features low input bias current (2 nA typ), low input offset current (0.5 nA typ), and stable operation driving capacitive loads up to 1000 pF without external compensation-enabling direct interface with ADC inputs, filters, and transducer front-ends.
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 systems without regulation |
| Quiescent Current per Amplifier | 85 μA typical - allows four amplifiers to operate continuously on coin-cell or Li-ion backup power for months |
| Input Offset Voltage | 2 mV typical (max 10 mV) - supports precision DC-coupled gain stages for thermocouple or strain gauge signals |
| Input Common-Mode Range | 0 V to V+−1.5 V - permits direct sensing of ground-referenced sensors without level-shifting circuitry |
| Output Voltage Swing | 3.6 V min (sourcing), 0.7 V max (sinking) at V+ = 5 V - delivers usable dynamic range near supply rails in single-supply mode |
| Gain Bandwidth Product | 100 kHz - suitable for low-frequency signal conditioning (e.g., <10 kHz sensor outputs, filter stages) |
| Common-Mode Rejection Ratio | 90 dB minimum - rejects noise coupled equally to both inputs in noisy industrial environments |
Pinout & Package
LP2902MX/NOPB is housed in a 14-pin SOIC (D) package, 8.75 mm × 4.0 mm footprint, 1.75 mm max height, with standard 1.27 mm lead pitch and RoHS-compliant matte tin (SN) lead finish. MSL Level-1 rating supports uncompromised reflow assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Amplifier A Output | Drives downstream load or feedback network; capable of sourcing 10 mA / sinking 5 mA |
| 2 | Amplifier A Inverting Input | Accepts feedback signal; adjacent to Pin 1 for compact loop layout |
| 3 | Amplifier A Non-Inverting Input | Receives input signal; supports rail-to-ground common-mode range |
| 4 | V− (GND) | Ground reference for all amplifiers; required return path for input bias and output currents |
| 5 | Amplifier B Non-Inverting Input | Independent input for second amplifier; no crosstalk with A or C sections |
| 6 | Amplifier B Inverting Input | Feedback node for B amplifier; placed adjacent to Pin 7 (B output) |
| 7 | Amplifier B Output | Second independent output; corner pin placement simplifies PCB routing |
| 8 | V+ | Positive supply rail for all four amplifiers; accepts 3–26 V DC |
| 9 | Amplifier C Non-Inverting Input | Third amplifier input; identical electrical specs to Pins 2/3/5/6 |
| 10 | Amplifier C Inverting Input | Feedback terminal for C amplifier; adjacent to Pin 8 (V+) and Pin 9 |
| 11 | Amplifier C Output | Third output; positioned at corner for minimal trace length |
| 12 | Amplifier D Non-Inverting Input | Fourth amplifier input; fully isolated from other sections |
| 13 | Amplifier D Inverting Input | Feedback node for D amplifier; adjacent to Pin 14 (D output) |
| 14 | Amplifier D Output | Fourth independent output; completes quad configuration with consistent drive capability |
Key Features
| Feature | Design Value |
|---|---|
| Micropower Operation | 85 μA per amplifier enables multi-channel signal conditioning in energy-constrained systems like portable gas detectors |
| Rail-to-Ground Input Stage | Input common-mode extends to 0 V, allowing direct interface with grounded thermistors or bridge sensors without bias resistors |
| CMOS Logic Compatibility | Output swing within 0.7 V of GND and 1.9 V of V+ ensures reliable interfacing with 3.3 V and 5 V digital logic families |
| Pin-for-Pin LM324 Replacement | SOIC-14 footprint and identical pinout allow drop-in upgrade from legacy LM324 with 10× lower quiescent current |
| Capacitive Load Drive Stability | Stable with 50–1000 pF loads eliminates need for isolation resistors when driving ADC sample-and-hold inputs |
Applications
| Portable Instrumentation | Battery Backup Monitoring |
|---|---|
Use Scenario: Signal conditioning for handheld multimeters measuring mV-level thermocouple outputs. IC Role / Device Role / Timing Role: Quad op-amp performs cold-junction compensation, gain adjustment, filtering, and buffer isolation in one package. Use Value: 85 μA per amplifier extends battery life beyond 12 months on two AA cells while maintaining 2 mV offset accuracy. | Use Scenario: Supervising voltage levels across backup supercapacitors in industrial PLCs during main power loss. IC Role / Device Role / Timing Role: Four comparators (configured as window detectors) monitor Vcap, Vsys, charge status, and fault thresholds simultaneously. Use Value: Rail-to-ground input enables direct sensing of 0–2.7 V supercap voltage without level-shifting, reducing component count by 4 discrete bias networks. |
| Low-Power Sensor Interface | Industrial Analog Front-End |
Use Scenario: Amplifying and filtering millivolt outputs from MEMS pressure sensors in wireless IoT nodes. IC Role / Device Role / Timing Role: First-stage instrumentation amplifier (A+B), anti-alias filter (C), and output buffer (D) in compact 14-pin layout. Use Value: 100 kHz GBW and 50 V/ms slew rate support 10 kHz sensor bandwidth while consuming <350 μA total for full signal chain. | Use Scenario: Signal conditioning for 4–20 mA current-loop transmitters in process control cabinets. IC Role / Device Role / Timing Role: I/V conversion, offset trimming, linearization correction, and output buffering across four independent channels. Use Value: −40°C to +85°C operating range and 90 dB CMRR ensure stable 12-bit-equivalent linearity over harsh factory environments. |
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 | Higher 1.5 mA supply current; wider 3–32 V supply range; 7 mV max VOS; no guaranteed ground-sensing input | Preferred where higher speed (1.2 MHz GBW) or wider supply range is needed, but not suitable for ultra-low-power designs | Select LM324DR only if system power budget exceeds 6 mA and rail-to-ground input is not required |
| TLV2464IDR | Lower 550 μA supply current; 6 mV max VOS; rail-to-rail I/O; 2.5 V to 6 V supply only | Suitable for 3.3 V systems requiring rail-to-rail output swing, but incompatible with 12/24 V industrial supplies | Choose TLV2464IDR for 3.3 V battery-powered devices needing full output swing, not for 5–26 V general-purpose use |
Compared with LM324DR and TLV2464IDR, LP2902MX/NOPB uniquely balances micropower operation (85 μA), ground-sensing input, and 3–26 V supply flexibility-making it the optimal choice for industrial battery-backed analog signal chains where supply headroom and energy efficiency are both critical.
Availability
LP2902MX/NOPB is available at Aetrix Electronics and suitable for portable instrumentation, battery backup monitoring, and low-power sensor interface applications requiring stable component supply across extended production lifecycles.
Supply support for LP2902MX/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 industrial-grade performance.
The LP2902MX/NOPB belongs to TI's micropower operational amplifier product line, engineered specifically for battery-operated and energy-sensitive systems requiring precision DC performance without compromising supply current.
FAQ
What is the maximum operating temperature range for LP2902MX/NOPB?
The LP2902MX/NOPB is specified for operation from −40°C to +85°C ambient temperature. This industrial-grade range is validated per the Electrical Characteristics table and Operating Conditions section of the SNOSBX6C datasheet. Thermal derating applies above 25°C based on θJA = 140°C/W for the SOIC (D) package. The device remains functional up to its absolute maximum junction temperature of 150°C, but guaranteed parametric performance is limited to the −40°C to +85°C range.
Does LP2902MX/NOPB support true single-supply operation with input signals at ground potential?
Yes, LP2902MX/NOPB supports true single-supply operation with input common-mode voltage extending to GND (0 V). The datasheet explicitly states "Input Common Mode to GND" as a feature and specifies VCM = 0 V in the Electrical Characteristics table. This allows direct connection of grounded sensors (e.g., RTDs, bridge circuits) without external biasing networks, unlike many older op-amps that require ≥1.5 V headroom below V+.
Is LP2902MX/NOPB pin-compatible with LM324, and what are the key electrical trade-offs?
Yes, LP2902MX/NOPB is pin-for-pin compatible with LM324 in SOIC-14 packaging, as confirmed in the Applications Hints section of the datasheet. Key trade-offs include reduced supply current (85 μA vs. 1.5 mA), lower slew rate (50 V/ms vs. 0.5 V/μs), and narrower gain-bandwidth product (100 kHz vs. 1.2 MHz). These reflect its micropower optimization-ideal for DC/low-frequency applications but unsuitable for high-speed signal paths where LM324 was previously used.
What is the recommended PCB layout practice for minimizing noise in LP2902MX/NOPB circuits?
TI recommends placing inverting inputs adjacent to their respective outputs (Pins 2–1, 6–7, 10–11, 13–14) to minimize parasitic capacitance and feedback loop area. Use short, direct traces for high-impedance inputs; decouple V+ (Pin 8) with a 0.1 μF ceramic capacitor close to the package; route analog and digital grounds separately and tie them at a single point near the device. Avoid running noisy digital traces parallel to analog inputs, and maintain clearance around Pin 4 (GND) to preserve reference integrity.
Can LP2902MX/NOPB drive capacitive loads, and what is the maximum stable value?
Yes, LP2902MX/NOPB is designed for stable operation with capacitive loads ranging from 50 pF to 1000 pF without external compensation, as stated in the Applications Hints section. This stability eliminates the need for series isolation resistors when driving ADC sample-and-hold inputs or long cables. For loads exceeding 1000 pF, TI recommends adding a small series resistor (e.g., 10–50 Ω) between the output and the load to maintain phase margin, especially in unity-gain configurations.
LP2902MX/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- 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:
- 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
LP2902MX/NOPB FAQ
1.How can I place an order for LP2902MX/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LP2902MX/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 LP2902MX/NOPB reliable?
The price and inventory of LP2902MX/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LP2902MX/NOPB is usually 5 days.
3.What payment methods are accepted for LP2902MX/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP2902MX/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LP2902MX/NOPB?
LP2902MX/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LP2902MX/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 LP2902MX/NOPB?
For technical support, including LP2902MX/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP2902MX/NOPB requirements.
6.How does Aetrix verify that LP2902MX/NOPB is sourced from the original manufacturer or authorized distributors?
All LP2902MX/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 LP2902MX/NOPB meets industry standards.
7.What is the process for return or replacement of LP2902MX/NOPB?
All LP2902MX/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LP2902MX/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 LP2902MX/NOPB part is unused and in its original packaging.
Return procedure for LP2902MX/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LP2902MX/NOPB Tags
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