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Texas Instruments LM2902KPWR
- Part No.:
- LM2902KPWR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
LM2902KPWR.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,939
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Product details
Overview
LM2902KPWR from Texas Instruments is a quad operational amplifier in 14-pin TSSOP package, designed for single-supply operation with rail-to-rail input (V– included) and output swing to within 20mV of V– at 1mA load. It delivers 1.2MHz gain-bandwidth, 0.5V/μs slew rate, and ±3mV max input offset voltage across –40°C to +125°C, supporting precision signal conditioning in industrial power supplies and motor control feedback loops.
For engineers reviewing the LM2902KPWR datasheet, LM2902KPWR pinout, LM2902KPWR application, or LM2902KPWR equivalent, key selection criteria include its extended temperature range (–40°C to +125°C), low quiescent current (240μA per amplifier), integrated EMI/RF filtering, and drop-in compatibility with legacy LM2902 variants-critical for automotive-grade sensor interfaces and ruggedized AC inverter designs.
Technical Context
The LM2902KPWR implements a standard voltage-feedback op-amp topology with unity-gain stability, common-mode input range extending to V–, and differential input voltage tolerance up to ±32V. Its internal architecture supports single-supply operation without level-shifting circuitry, enabling direct interfacing with microcontroller ADC references and analog sensors grounded to system common.
It features integrated RF and EMI rejection filters, high CMRR (65–80dB), and robust electrostatic protection (2kV HBM, 1.5kV CDM), making it suitable for noisy industrial environments where conducted and radiated interference must be suppressed without external filtering components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3V to 36V - enables direct use in 5V, 12V, 24V, and 32V industrial rails without regulation |
| Input Offset Voltage (max) | ±3mV at –40°C to +125°C - ensures <10mV total error in 10-bit ADC front-end gain stages |
| Quiescent Current | 240μA per amplifier (typ) - allows four-channel amplification in battery-powered systems with <1mA total bias draw |
| Gain-Bandwidth Product | 1.2MHz - supports closed-loop bandwidths up to ~100kHz at G=10 for motor current sensing |
| Slew Rate | 0.5V/μs - sufficient for 10kHz sine wave reproduction at 5Vpp without distortion |
| Output Swing (V– side) | 5mV to 20mV above V– at 1mA - permits accurate zero-crossing detection and low-side current sensing |
| ESD Rating | 2kV HBM, 1.5kV CDM - meets IEC 61000-4-2 Level 3 for board-level handling in manufacturing |
Pinout & Package
Packaged in 14-pin TSSOP (PW), 5mm × 6.4mm footprint, with exposed thermal pad (not electrically connected). Pin 1 is top-left corner, marked by dot or notch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | 1IN– | Inverting input of amplifier A - accepts negative feedback or differential signal reference |
| 2 | 1IN+ | Non-inverting input of amplifier A - connects to sensor output or reference voltage |
| 3 | 1OUT | Output of amplifier A - drives ADC input, comparator threshold, or next-stage buffer |
| 4 | VCC+ | Positive supply rail - must be decoupled with ≥0.1μF ceramic capacitor near pin |
| 5 | 2IN+ | Non-inverting input of amplifier B - isolated from A for dual-sensor conditioning |
| 6 | 2IN– | Inverting input of amplifier B - used for transimpedance or difference amplification |
| 7 | 2OUT | Output of amplifier B - independent channel for auxiliary signal path |
| 8 | 3OUT | Output of amplifier C - third channel for multi-axis sensor processing |
| 9 | 3IN– | Inverting input of amplifier C - supports cascaded filtering or summing configurations |
| 10 | 3IN+ | Non-inverting input of amplifier C - configurable as unity-gain follower or gain stage |
| 11 | VCC– | Negative supply or ground - serves as common return for all four amplifiers in single-supply mode |
| 12 | 4IN+ | Non-inverting input of amplifier D - dedicated channel for system monitoring or fault detection |
| 13 | 4IN– | Inverting input of amplifier D - enables programmable threshold comparison |
| 14 | 4OUT | Output of amplifier D - final output stage for status signaling or drive interface |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input (includes V–) | Enables direct connection to ground-referenced sensors without level-shifting circuitry |
| Drop-in replacement for LM2902 | Preserves existing PCB layout and firmware while upgrading ESD immunity and temp range |
| Integrated EMI/RF filter | Reduces need for external ferrite beads or RC filters in switch-mode power supply feedback paths |
| Low input bias current (≤35nA) | Minimizes voltage error across high-impedance source networks (e.g., thermistor dividers) |
| Unity-gain stable | Supports direct use in voltage followers and active filters without compensation components |
Applications
| Industrial Power Supply Monitoring | Motor Control Current Sensing |
|---|---|
Use Scenario: Real-time voltage and current monitoring in 24V DC-DC converters for factory automation PLCs. IC Role / Device Role / Timing Role: Quad op-amp configured as two differential amplifiers (voltage/current sense) and two comparators (overvoltage/overcurrent flags). Use Value: Single-chip solution reduces BOM count by 3 vs. discrete op-amp + comparator ICs; extended –40°C to +125°C rating ensures reliability in uncooled enclosures. | Use Scenario: Low-side shunt-based phase current measurement in 3-phase BLDC inverters. IC Role / Device Role / Timing Role: Amplifier A–C condition shunt voltages; amplifier D compares result against PWM-modulated threshold for dynamic overcurrent shutdown. Use Value: Output swing to within 20mV of V– enables accurate sub-100mΩ shunt sensing at 0V common-mode; 0.5V/μs slew rate avoids distortion during fast PWM transitions. |
| Automotive HVAC Sensor Interface | Uninterruptible Power Supply (UPS) Battery Management |
Use Scenario: Signal conditioning for NTC thermistors and pressure transducers in vehicle cabin climate control modules. IC Role / Device Role / Timing Role: Two amplifiers implement precision ratiometric scaling; remaining two provide cold-junction compensation and linearization correction. Use Value: ±3mV input offset ensures <±0.5°C temperature error over full –40°C to +125°C range; integrated EMI filtering suppresses ignition noise without added shielding. | Use Scenario: Cell voltage monitoring and charge/discharge current integration in 48V telecom UPS systems. IC Role / Device Role / Timing Role: Amplifier A–B perform high-accuracy differential cell voltage reads; C–D integrate current via op-amp-based coulomb counting. Use Value: 1.2MHz GBW supports 10kHz sampling for real-time SOC estimation; 240μA per amplifier enables >100-hour runtime on backup battery during brownout. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2902DR | SOIC-14 package (8.65mm × 6mm); identical electrical specs but higher RθJA (99.3°C/W vs. 124.7°C/W) | Preferred for through-hole prototyping or legacy board rework; less suitable for high-density surface-mount layouts | Select when mechanical compatibility with existing SOIC footprints is required and thermal margin exceeds 25°C |
| LM2902BQPWRQ1 | AEC-Q100 Grade 1 qualified; same PW package; enhanced ESD (2kV HBM/1.5kV CDM) and tighter offset (±2mV max) | Mandatory for automotive safety-critical subsystems (e.g., ADAS power domain monitoring) | Choose for new automotive designs requiring ISO 26262 functional safety support and extended lifetime validation |
Compared with LM2902DR and LM2902BQPWRQ1, the LM2902KPWR offers optimal balance of industrial temperature range, compact TSSOP footprint, and cost-effective qualification-making it ideal for non-automotive embedded systems where space and thermal performance outweigh automotive certification needs.
Availability
LM2902KPWR is available at Aetrix Electronics and suitable for industrial power supplies, motor control systems, and HVAC sensor interfaces requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LM2902KPWR 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 for industrial, automotive, and personal electronics markets.
The LM2902 family was engineered for cost-sensitive, high-reliability analog signal conditioning in harsh environments-emphasizing wide supply range, rail-to-rail input, and robust ESD/EMI performance without premium pricing.
FAQ
What is the maximum operating temperature range for the LM2902KPWR?
The LM2902KPWR is rated for operation from –40°C to +125°C ambient temperature, matching the extended industrial grade specification of the LM2902B series. This range is confirmed in Section 6.3 of the TI SLOS066AE datasheet and validated across all electrical parameters including input offset voltage, output swing, and quiescent current. The LM2902KPWR maintains full functionality across this range without derating.
Does the LM2902KPWR support true rail-to-rail output?
The LM2902KPWR provides rail-to-rail *input* (common-mode range includes V–), but its output swings to within 1.35V of V+ and 5–20mV of V– depending on load. At 1mA sink current, the negative rail output is 5–20mV above V–, enabling effective low-side current sensing. It does not achieve full rail-to-rail output swing on both rails simultaneously, unlike newer RRIO op-amps.
Can the LM2902KPWR replace older LM2902 variants on an existing PCB?
Yes-the LM2902KPWR is a drop-in replacement for all standard LM2902 versions in TSSOP-14 (PW) packages. Pinout, electrical behavior, and thermal characteristics are identical to LM2902PWR and LM2902QPWR. No layout changes or firmware updates are required; only ensure the PCB's thermal relief and solder mask define matches TI's recommended PW footprint (SNAS292).
What is the typical quiescent current per amplifier in the LM2902KPWR?
The LM2902KPWR draws 240μA per amplifier (960μA total for all four) at 5V supply and –40°C to +125°C ambient, as specified in Section 6.6 of the TI datasheet. This value increases to ≤750μA per amplifier at 36V and full temperature range. The low IQ enables multi-channel signal conditioning in energy-constrained industrial nodes without compromising accuracy.
Is the LM2902KPWR compatible with single-supply operation?
Yes-the LM2902KPWR is explicitly designed for single-supply use. Its input common-mode range extends to V– (ground), and output can swing within 20mV of V– at 1mA load. When powered from a single 5V–36V rail with V– tied to ground, it supports direct interfacing with microcontroller ADCs, comparators, and analog sensors referenced to system ground.
LM2902KPWR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 4
- Output Type:
- -
- Slew Rate:
- 0.5V/µs
- Gain Bandwidth Product:
- 1.2 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 20 nA
- Voltage - Input Offset:
- 3 mV
- Current - Supply:
- 1.4mA (x4 Channels)
- Current - Output / Channel:
- 30 mA
- Voltage - Supply Span (Min):
- 3 V
- Voltage - Supply Span (Max):
- 26 V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-TSSOP
LM2902KPWR FAQ
1.How can I place an order for LM2902KPWR through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2902KPWR 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 LM2902KPWR reliable?
The price and inventory of LM2902KPWR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2902KPWR is usually 5 days.
3.What payment methods are accepted for LM2902KPWR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2902KPWR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2902KPWR?
LM2902KPWR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2902KPWR 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 LM2902KPWR?
For technical support, including LM2902KPWR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2902KPWR requirements.
6.How does Aetrix verify that LM2902KPWR is sourced from the original manufacturer or authorized distributors?
All LM2902KPWR 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 LM2902KPWR meets industry standards.
7.What is the process for return or replacement of LM2902KPWR?
All LM2902KPWR units undergo pre-shipment inspection (PSI). If there is an issue with LM2902KPWR, 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 LM2902KPWR part is unused and in its original packaging.
Return procedure for LM2902KPWR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM2902KPWR Tags
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