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Texas Instruments LM2902N/NOPB
- Part No.:
- LM2902N/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-DIP (0.300", 7.62mm)
- Datasheet:
-
LM2902N/NOPB.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14DIP
- Quantity:
- Payment:
- Shipping:
Inventory:12,466
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Product details
Overview
LM2902N/NOPB from Texas Instruments is a low-power, quad operational amplifier optimized for single-supply operation from 3 V to 26 V, featuring 1 MHz unity-gain bandwidth, 100 dB DC open-loop gain, 700 μA typical supply current per amplifier, and rail-to-rail input common-mode range including ground - widely used in industrial sensor signal conditioning and battery-powered instrumentation.
For engineers reviewing the LM2902N/NOPB datasheet, LM2902N/NOPB pinout, LM2902N/NOPB application, or LM2902N/NOPB equivalent, this page delivers verified specifications, validated pin functions, confirmed operating temperature range (−40°C to +85°C), package mapping (PDIP-14/SOIC-14/TSSOP-14), and real-world design context for transducer amplification, DC gain blocks, and single-supply analog interface circuits.
Technical Context
The LM2902N/NOPB implements a PNP-input stage enabling true ground-sensing capability and output swing down to 0 V (with load-dependent headroom), while maintaining temperature-compensated input bias current (45 nA typ) and offset voltage (2 mV typ). Its internal frequency compensation ensures stable unity-gain operation without external components.
It supports dual-supply operation (±1.5 V to ±16 V) but is primarily deployed in single-rail systems where input signals extend to ground and output must drive logic-compatible levels. The device exhibits 50–100 V/mV large-signal voltage gain and 50–70 dB common-mode rejection over its full operating range, with output sourcing/sinking capability up to 40 mA short-circuit current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3 V to 26 V single supply (or ±1.5 V to ±16 V dual); enables direct interfacing with 5 V digital systems without auxiliary rails. |
| Unity-Gain Bandwidth | 1 MHz; supports audio-frequency signal conditioning and moderate-speed sensor amplification without instability. |
| Input Offset Voltage | 2 mV max at 25°C; ensures ≤20 mV output error in unity-gain buffer configurations at room temperature. |
| Supply Current per Amp | 700 μA typical; allows four op amps to operate continuously on <3 mA total, suitable for long-life battery applications. |
| Input Common-Mode Range | 0 V to V+ −1.5 V; permits direct connection of grounded sensors (e.g., thermocouples, RTDs) without level-shifting circuitry. |
| Output Voltage Swing | 0 V to V+ −1.5 V (RL ≥2 kΩ); delivers logic-low compatible outputs and supports rail-referenced DAC buffering. |
| Operating Temperature | −40°C to +85°C; qualified for industrial control, automotive body electronics, and outdoor instrumentation environments. |
Pinout & Package
LM2902N/NOPB is available in PDIP-14 (19.177 mm × 6.35 mm), SOIC-14 (8.65 mm × 3.91 mm), and TSSOP-14 (5.00 mm × 4.40 mm) packages. Pin functions are identical across all variants.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 7, 8, 14 | Output | Amplifier outputs 1–4; each capable of sourcing/sinking ≥40 mA into resistive loads, with 0 V minimum output under light load. |
| 2, 6, 9, 13 | Inverting Input | Differential inputs for channels 1–4; accept signals down to ground with no level shift required. |
| 3, 5, 10, 12 | Noninverting Input | Positive inputs for channels 1–4; support direct connection to grounded transducers and reference voltages. |
| 4 | V+ | Positive supply terminal; accepts 3–26 V DC; powers all four amplifiers simultaneously. |
| 11 | GND | Ground or negative supply return; serves as common reference for all inputs, outputs, and bias networks. |
Key Features
| Feature | Design Value |
|---|---|
| Single-supply operation | Eliminates need for split supplies in sensor front-ends, reducing BOM count and PCB area in portable and industrial systems. |
| Ground-sensing input | Enables direct amplification of 0 V–referenced signals (e.g., bridge sensors, current shunts) without external biasing resistors. |
| Temperature-compensated bias | Maintains stable 45 nA input bias current across −40°C to +85°C, minimizing drift-induced errors in precision gain stages. |
| Internally compensated | Guarantees stability in unity-gain configurations without external compensation capacitors, simplifying layout and validation. |
| Low quiescent current | 700 μA per amplifier enables multi-channel analog signal chains in power-constrained applications like IoT nodes and handheld meters. |
Applications
| Transducer Amplification | DC Gain Block |
|---|---|
Use Scenario: Amplifying low-level millivolt outputs from strain gauges, thermocouples, or pressure sensors in industrial PLC modules. IC Role / Device Role / Timing Role: Quad op amp configured as four independent non-inverting amplifiers with gain-setting resistors, referenced to system ground. Use Value: Direct ground-referenced input eliminates level-shifting circuitry; 2 mV offset ensures ≤20 mV error in 10× gain stages at 25°C. | Use Scenario: Building fixed-gain signal conditioning stages for analog sensor outputs prior to ADC sampling in data loggers. IC Role / Device Role / Timing Role: Four-channel DC-coupled amplifier providing precise, stable gain (e.g., 10×, 100×) with minimal thermal drift. Use Value: 700 μA per amplifier enables four-stage gain chain on <3 mA total supply current; 100 dB open-loop gain ensures gain accuracy within 0.1%. |
| Single-Supply Interface | Battery-Powered Instrumentation |
Use Scenario: Interfacing analog sensors to 5 V microcontrollers in HVAC controllers, where only a single 5 V rail is available. IC Role / Device Role / Timing Role: Quad op amp used for sensor buffering, level shifting (via pseudo-ground), and active filtering before MCU ADC input. Use Value: Input common-mode range includes ground and output swings to 0 V allow full-scale utilization of 5 V ADCs without external bias networks. | Use Scenario: Signal conditioning in handheld multimeters, portable gas detectors, and field calibration tools powered by AA/AAA batteries. IC Role / Device Role / Timing Role: Low-power quad amplifier performing sensor excitation, amplification, and reference buffering in compact battery-operated enclosures. Use Value: 700 μA per amplifier extends battery life beyond 1000 hours on two AA cells; −40°C to +85°C rating supports outdoor deployment. |
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 | Wider temperature range (0°C to +70°C vs. −40°C to +85°C); higher input offset voltage (7 mV max vs. 2 mV max); same pinout and package options. | Optimized for commercial-grade consumer electronics; not rated for extended industrial temperature operation. | Select LM324N/NOPB only for cost-sensitive, ambient-temperature applications where extended temp range is unnecessary. |
| TLV2464CDR | Rail-to-rail input/output; lower supply current (550 μA per amp); higher GBW (6.4 MHz); SOIC-14 only; requires 2.7–6 V supply. | Suitable for high-precision, low-voltage battery systems (e.g., 3.3 V IoT sensors); incompatible with >6 V supplies or legacy 5 V designs requiring 26 V tolerance. | Choose TLV2464CDR when rail-to-rail performance and sub-1 mA total current are critical, and supply voltage remains ≤6 V. |
Compared with LM324N/NOPB and TLV2464CDR, LM2902N/NOPB uniquely balances extended industrial temperature operation, 3–26 V supply flexibility, ground-sensing capability, and proven reliability in legacy and new industrial designs - making it the preferred choice for robust single-supply analog signal chains where voltage range and environmental resilience are primary constraints.
Availability
LM2902N/NOPB is available at Aetrix Electronics and suitable for industrial sensor interfaces, battery-powered instrumentation, and single-supply analog signal conditioning requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for LM2902N/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 and embedded processing solutions, with over 90 years of innovation in precision analog ICs and broad industrial portfolio coverage.
The LM2902N/NOPB belongs to TI's legacy general-purpose op amp product line, designed specifically for cost-effective, reliable single-supply operation in industrial control, test equipment, and sensor interface applications where ground-referenced inputs and wide supply range are essential.
FAQ
What is the maximum supply voltage for LM2902N/NOPB?
The absolute maximum supply voltage for LM2902N/NOPB is 32 V, but the recommended operating range is 3 V to 26 V for single-supply use. Exceeding 26 V may violate specified electrical characteristics and reduce reliability. This limit is defined in the datasheet's Recommended Operating Conditions table and applies across the full −40°C to +85°C junction temperature range. LM2902N/NOPB maintains stable operation at 26 V with verified parameters including input offset, gain, and output swing.
Does LM2902N/NOPB support rail-to-rail output?
LM2902N/NOPB does not provide true rail-to-rail output: its output swings from 0 V to V+ −1.5 V (for RL ≥2 kΩ) at 25°C. It achieves ground-referenced output (0 V minimum) but cannot reach the positive rail. This behavior is inherent to its PNP-input, NPN-output stage architecture. For applications requiring V+ −0.1 V output swing, LM2902N/NOPB is unsuitable; alternatives like TLV2464CDR should be evaluated. LM2902N/NOPB's 0 V output capability remains critical for interfacing with grounded loads and logic inputs.
Can LM2902N/NOPB operate with a 3.3 V supply?
Yes, LM2902N/NOPB is fully specified to operate from 3 V to 26 V single supply, including 3.3 V systems. At 3.3 V, it maintains functional input common-mode range (0 V to 1.8 V), usable gain (≥25 V/mV), and output swing (0 V to ~1.8 V). However, slew rate and bandwidth decrease versus 5 V operation, and output current capability reduces proportionally. Verified performance at 3.3 V is documented in TI's LM2902-N Electrical Characteristics tables, confirming suitability for low-voltage industrial and battery-powered applications where 3.3 V rails are standard.
What is the input bias current specification for LM2902N/NOPB?
The input bias current for LM2902N/NOPB is 45 nA typical and 250 nA maximum at 25°C, with temperature compensation ensuring stability across −40°C to +85°C. This value reflects current flowing *out* of the PNP input terminals due to base current requirements. It is independent of supply voltage and remains constant across the operating range, enabling predictable resistor selection in high-impedance sensor interfaces. The 45 nA typ value is confirmed in Section 6.6 of the SNOSC16D datasheet and applies identically across all four amplifiers in the LM2902N/NOPB package.
Is LM2902N/NOPB pin-compatible with LM324N/NOPB?
Yes, LM2902N/NOPB is pin-compatible with LM324N/NOPB in all shared packages (PDIP-14, SOIC-14, TSSOP-14): both share identical pin numbering, function mapping, and footprint dimensions. However, they differ in temperature rating (LM2902N/NOPB: −40°C to +85°C; LM324N/NOPB: 0°C to +70°C), input offset voltage (2 mV vs. 7 mV max), and supply voltage upper limit (26 V vs. 32 V absolute max). Substitution is electrically safe but requires validation of thermal and precision requirements in the target application. LM2902N/NOPB retains full functionality when dropped into LM324N/NOPB layouts.
LM2902N/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LinCMOS™
- 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:
- -
- Gain Bandwidth Product:
- 1 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 45 nA
- Voltage - Input Offset:
- 2 mV
- Current - Supply:
- 1.5mA
- Current - Output / Channel:
- 40 mA
- Voltage - Supply Span (Min):
- 3 V
- Voltage - Supply Span (Max):
- 32 V
- Operating Temperature:
- -40°C ~ 85°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 14-PDIP
LM2902N/NOPB FAQ
1.How can I place an order for LM2902N/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2902N/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 LM2902N/NOPB reliable?
The price and inventory of LM2902N/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2902N/NOPB is usually 5 days.
3.What payment methods are accepted for LM2902N/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2902N/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2902N/NOPB?
LM2902N/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2902N/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 LM2902N/NOPB?
For technical support, including LM2902N/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2902N/NOPB requirements.
6.How does Aetrix verify that LM2902N/NOPB is sourced from the original manufacturer or authorized distributors?
All LM2902N/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 LM2902N/NOPB meets industry standards.
7.What is the process for return or replacement of LM2902N/NOPB?
All LM2902N/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM2902N/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 LM2902N/NOPB part is unused and in its original packaging.
Return procedure for LM2902N/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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