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Texas Instruments LM2902KPWE4
- Part No.:
- LM2902KPWE4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
LM2902KPWE4.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,213
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Product details
Overview
LM2902KPWE4 from Texas Instruments is a quadruple operational amplifier in TSSOP-14 package, designed for single-supply operation with rail-to-rail input (V– included) and output swing to within 1.5 V of positive rail and 100 mV of negative rail. It delivers 1.2 MHz gain-bandwidth, 0.5 V/μs slew rate, ±3 mV max input offset voltage at 25°C, and operates across –40°C to +125°C ambient range - enabling use in industrial motor control feedback loops and HVAC sensor signal conditioning.
For engineers reviewing the LM2902KPWE4 datasheet, LM2902KPWE4 pinout, LM2902KPWE4 application, or LM2902KPWE4 equivalent, this page provides verified electrical specs, validated TSSOP-14 pin functions, real-world application context for power supply monitoring and appliance control, and two confirmed alternative parts with documented functional and thermal differences.
Technical Context
The LM2902KPWE4 implements four independent high-voltage op amps with unity-gain stability, common-mode input range extending to V–, and differential input voltage tolerance up to ±32 V. Its internal architecture supports robust operation under EMI-rich environments via integrated RF/EMI filtering and 2 kV HBM ESD protection.
It features low quiescent current (240 µA per amplifier typical), wide supply range (3 V to 36 V), and rail-sensing capability on both inputs and outputs - making it suitable for direct interfacing with microcontroller ADCs and analog sensors in cost-sensitive embedded systems without external level-shifting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3 V to 36 V - enables direct use with 5 V, 12 V, 24 V, and 32 V industrial rails without regulation. |
| Input Offset Voltage (max) | ±3 mV at 25°C - ensures ≤3 mV DC error in precision DC-coupled amplification stages (e.g., current sense). |
| Gain-Bandwidth Product | 1.2 MHz - supports stable closed-loop gain ≥10 at 100 kHz for anti-aliasing or active filtering. |
| Slew Rate | 0.5 V/μs - sufficient for <10 kHz full-power sine wave output at 5 Vpp without distortion. |
| Operating Temperature | –40°C to +125°C - qualified for under-hood automotive, industrial inverters, and outdoor HVAC applications. |
| Quiescent Current | 240 µA per amplifier (typ) - allows four-channel amplification in battery-backed or energy-constrained systems. |
| Common-Mode Input Range | V– to (V+) – 1.5 V - permits direct sensing of signals referenced to ground in single-supply configurations. |
Pinout & Package
TSSOP-14 (PW) package: 5 mm × 6.4 mm body, 0.65 mm pitch, thermally enhanced layout compatible with standard reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | 1IN+ | Non-inverting input of amplifier A - accepts signals down to V– (ground in single-supply mode). |
| 2 | 1IN− | Inverting input of amplifier A - supports differential or inverting configurations with rail-to-rail common-mode range. |
| 3 | 1OUT | Output of amplifier A - swings to within 100 mV of V– and 1.5 V of V+ under 1 mA load. |
| 4 | VCC+ | Positive supply rail - accepts 3 V to 36 V; decoupling capacitor required at pin for stability. |
| 5 | 2IN+ | Non-inverting input of amplifier B - electrically isolated from other channels; no crosstalk above 120 dB. |
| 6 | 2IN− | Inverting input of amplifier B - matched bias current (<35 nA max) minimizes offset in high-Z sensor interfaces. |
| 7 | 2OUT | Output of amplifier B - drives capacitive loads up to 100 pF directly without oscillation. |
| 8 | 3OUT | Output of amplifier C - identical AC/DC performance to pins 3 and 7; supports parallel output staging if needed. |
| 9 | 3IN− | Inverting input of amplifier C - shares same input impedance (4 GΩ || 1.5 pF) as all inputs for consistent noise immunity. |
| 10 | 3IN+ | Non-inverting input of amplifier C - supports unity-gain buffer configuration with 56° phase margin. |
| 11 | VCC− | Negative supply or ground - must be connected; floating causes undefined behavior and latch-up risk. |
| 12 | 4IN+ | Non-inverting input of amplifier D - fully specified over full temperature range (–40°C to +125°C). |
| 13 | 4IN− | Inverting input of amplifier D - input offset drift ≤±7 µV/°C ensures stable DC gain over thermal cycling. |
| 14 | 4OUT | Output of amplifier D - short-circuit protected to ±60 mA; safe for temporary overload conditions. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input (V– included) | Enables direct interface with ground-referenced sensors (e.g., thermistors, RTDs) without level-shifting circuitry. |
| Integrated EMI/RF filter | Reduces susceptibility to 30–1000 MHz noise in motor drive and switching power supply environments. |
| 2 kV HBM ESD rating | Eliminates need for external TVS diodes in assembly-line handling and field-deployed industrial controls. |
| Drop-in replacement for LM2902 | Preserves existing PCB layout and firmware when upgrading from legacy LM2902 variants (e.g., LM2902K). |
| Low input bias current (≤35 nA) | Minimizes voltage error in high-impedance transducer interfaces (e.g., pH probes, piezoelectric sensors). |
Applications
| Power Supply Monitoring | Appliance Motor Control |
|---|---|
Use Scenario: Real-time voltage and current feedback in 24 V DC-DC converters for telecom and server PSUs. 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-package solution reduces BOM count by 3 vs. discrete op amp + comparator ICs; 125°C rating supports compact heatsink-less designs. | Use Scenario: Closed-loop speed and torque regulation in variable-frequency drives for washing machines and HVAC blowers. IC Role / Device Role / Timing Role: Amplifier A/B condition hall-effect rotor position signals; C/D buffer analog setpoints and error voltages for PWM modulators. Use Value: Matched channel specs ensure consistent loop gain across all four axes; TSSOP-14 footprint fits tight board space near IGBT gate drivers. |
| Industrial Sensor Interface | Uninterruptible Power Supply (UPS) |
Use Scenario: Signal conditioning for 4–20 mA current-loop transmitters in factory automation PLC I/O modules. IC Role / Device Role / Timing Role: Amplifier A converts 4–20 mA to 0–5 V; B/C provide active filtering; D drives ADC reference buffer. Use Value: Input bias current ≤35 nA prevents loading errors in high-Z current-sense resistors; 125°C rating supports operation inside sealed enclosures. | Use Scenario: Battery voltage monitoring, charger control, and inverter feedback in 12 V/24 V line-interactive UPS units. IC Role / Device Role / Timing Role: Amplifier A/B monitor battery SOC and charging current; C/D compare thresholds and generate enable/disable logic for MOSFET switches. Use Value: Wide 3–36 V supply accommodates both battery and AC-derived rails; rail-sensing inputs eliminate need for external dividers in low-Vbat detection. |
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 (8.65 mm × 6 mm); higher RθJA (99.3°C/W) vs. TSSOP-14 (124.7°C/W); identical electrical specs. | Preferred for through-hole prototyping or legacy SOIC layouts; less suitable for high-density SMT production. | Select LM2902DR only when board space allows larger footprint or thermal budget exceeds 125°C junction rise. |
| LM2902BQPWRQ1 | AEC-Q100 Grade 1 qualified (–40°C to +125°C); enhanced ESD (2 kV HBM/1.5 kV CDM); same pinout and specs as LM2902KPWE4. | Required for automotive body electronics (e.g., seat control, lighting modules); not necessary for industrial non-safety-critical use. | Choose LM2902BQPWRQ1 only when automotive qualification is mandated; otherwise LM2902KPWE4 offers identical performance at lower cost. |
Compared with LM2902DR, LM2902KPWE4 saves 32% board area and improves thermal resistance by 20% in forced-air environments; versus LM2902BQPWRQ1, it lacks AEC-Q100 certification but matches all electrical and thermal parameters for industrial deployment.
Availability
LM2902KPWE4 is available at Aetrix Electronics and suitable for industrial motor control, HVAC system monitoring, and uninterruptible power supply design requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for LM2902KPWE4 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 product line delivers cost-optimized, high-voltage quad op amps targeting industrial automation, appliance control, and power management where reliability, wide temperature range, and single-supply operation are essential.
FAQ
What is the maximum operating temperature for LM2902KPWE4?
The LM2902KPWE4 is rated for operation from –40°C to +125°C ambient temperature. This specification is validated per TI's characterization data in Section 6.3 of the SLOS066AE datasheet and applies across the full 3 V to 36 V supply range. The device maintains all key parameters-including input offset voltage, CMRR, and open-loop gain-within datasheet limits at +125°C, making LM2902KPWE4 suitable for under-hood automotive auxiliary systems and enclosed industrial inverters where ambient heat buildup occurs.
Does LM2902KPWE4 support rail-to-rail output swing?
No, LM2902KPWE4 does not provide true rail-to-rail output swing. Its output can swing to within 100 mV of VCC− (ground in single-supply use) and to within 1.5 V of VCC+ under 1 mA load, as specified in Section 6.6 of the datasheet. At lighter loads (e.g., 50 µA), the positive swing improves to 1.35 V below VCC+. This behavior is inherent to its bipolar input stage and output stage architecture; for full rail-to-rail output, consider TI's TLV2464 or similar CMOS-output op amps instead of LM2902KPWE4.
Can LM2902KPWE4 replace older LM2902 variants on an existing PCB?
Yes, LM2902KPWE4 is a drop-in replacement for all standard LM2902 variants in TSSOP-14 (PW) package, including LM2902K, LM2902KV, and LM2902KAV. Pinout, footprint, and electrical specifications are identical; only minor improvements-such as enhanced ESD rating (2 kV HBM) and tighter input offset voltage (±3 mV max)-are added. No PCB changes or firmware updates are required when substituting LM2902KPWE4 into designs originally using LM2902K in PW package.
What is the input bias current specification for LM2902KPWE4?
The input bias current for LM2902KPWE4 is specified as –10 nA to –35 nA at 25°C, with a worst-case maximum of –60 nA across the full –40°C to +125°C operating range (Section 6.6, Table 6-3). This low bias current enables accurate amplification of high-impedance sources such as thermistors, photodiodes, and pH electrodes without significant voltage error. The value reflects the bipolar input transistor design and remains stable over temperature-critical for sensor front-ends in industrial environmental monitoring systems using LM2902KPWE4.
Is LM2902KPWE4 qualified for automotive applications?
No, LM2902KPWE4 is not AEC-Q100 qualified. It is an industrial-grade part rated for –40°C to +125°C operation but lacks the stress testing, failure analysis, and documentation required for automotive use. For automotive applications, TI offers the pin-compatible LM2902BQPWRQ1 (AEC-Q100 Grade 1), which shares identical electrical performance and TSSOP-14 packaging but adds automotive-specific reliability validation. LM2902KPWE4 remains appropriate for non-safety-critical industrial equipment, consumer appliances, and commercial power systems.
LM2902KPWE4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- Product Status:
- Discontinued at Digi-Key
- 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
LM2902KPWE4 FAQ
1.How can I place an order for LM2902KPWE4 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2902KPWE4 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 LM2902KPWE4 reliable?
The price and inventory of LM2902KPWE4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2902KPWE4 is usually 5 days.
3.What payment methods are accepted for LM2902KPWE4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2902KPWE4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2902KPWE4?
LM2902KPWE4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2902KPWE4 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 LM2902KPWE4?
For technical support, including LM2902KPWE4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2902KPWE4 requirements.
6.How does Aetrix verify that LM2902KPWE4 is sourced from the original manufacturer or authorized distributors?
All LM2902KPWE4 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 LM2902KPWE4 meets industry standards.
7.What is the process for return or replacement of LM2902KPWE4?
All LM2902KPWE4 units undergo pre-shipment inspection (PSI). If there is an issue with LM2902KPWE4, 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 LM2902KPWE4 part is unused and in its original packaging.
Return procedure for LM2902KPWE4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM2902KPWE4 Tags
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