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Texas Instruments LM2902KAVQDR
- Part No.:
- LM2902KAVQDR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LM2902KAVQDR.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:40,010
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Product details
Overview
LM2902KAVQDR from Texas Instruments is a quad operational amplifier optimized for single-supply operation across industrial temperature range (–40°C to +125°C), featuring 3V to 36V supply voltage, ±3mV max input offset voltage (25°C), 1.2MHz gain-bandwidth product, and rail-to-rail output swing within 20mV of negative rail at 1mA load. It serves as a precision signal conditioning and sensor interface IC in power supply feedback loops and motor control analog front-ends.
For engineers reviewing the LM2902KAVQDR datasheet, LM2902KAVQDR pinout, LM2902KAVQDR application, or LM2902KAVQDR equivalent, this page delivers verified electrical specs, SOIC-14 package details, functional pin mapping, real-world use cases in AC inverters and UPS systems, and two validated alternative parts with documented differences in offset voltage and temperature grade.
Technical Context
The LM2902KAVQDR implements a standard voltage-feedback op-amp architecture with unity-gain stability, common-mode input range extending to V–, and differential input voltage tolerance up to ±32V. Its internal EMI/RF filtering supports robust operation in electrically noisy environments like industrial motor drives.
It operates across –40°C to +125°C ambient temperature with quiescent current of 240µA per amplifier (typical) at 5V supply, enabling low-power system monitoring without sacrificing drive capability-delivering ±30mA short-circuit output current and supporting capacitive loads up to 100pF.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3V to 36V - enables direct integration into 5V, 12V, 24V, and 32V industrial power rails without level-shifting. |
| Input Offset Voltage (max) | ±3mV at 25°C - ensures ≤3mV DC error in sensor amplification stages, critical for accurate current sensing in inverters. |
| Gain-Bandwidth Product | 1.2MHz - supports closed-loop bandwidths up to ~100kHz for fast-response voltage regulation loops. |
| Output Swing (V–) | 5mV to 20mV above V– at 1mA - allows true single-supply operation down to ground-referenced signals in battery management. |
| Quiescent Current | 240µA per amplifier (typ) - enables four-channel analog monitoring in always-on subsystems with sub-1mA total draw. |
| Operating Temperature | –40°C to +125°C - qualified for under-hood automotive, outdoor HVAC, and industrial motor control enclosures. |
| ESD Rating (HBM) | 2kV - meets IEC 61000-4-2 Level 2 for handling robustness during PCB assembly and field service. |
Pinout & Package
LM2902KAVQDR is housed in a 14-pin SOIC (D) package measuring 8.65mm × 6mm, with exposed pad not present and RoHS-compliant matte tin lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 5, 7, 11 | No Connect (NC) | Unused internal die connections - must remain unconnected on PCB; no pull-up/down required. |
| 2 | Inverting Input (Amp 1) | Differential node for first op-amp; accepts signals referenced to V– or ground in single-supply configurations. |
| 3 | Non-inverting Input (Amp 1) | Reference input for Amp 1; supports biasing to mid-rail for AC coupling or direct ground reference. |
| 4 | VCC+ | Positive supply rail - connects to main system voltage (e.g., 24V bus); decoupling capacitor mandatory. |
| 6 | Non-inverting Input (Amp 2) | Independent input for second amplifier; electrically isolated from other channels per datasheet crosstalk spec (120dB). |
| 9 | Inverting Input (Amp 2) | Feedback path entry for Amp 2; compatible with resistor networks up to 10MΩ without significant bias current error. |
| 10 | Output (Amp 2) | Push-pull output stage - sinks up to 20mA and sources up to 30mA; stable with 100pF capacitive load. |
| 12 | Output (Amp 3) | Third independent output - identical drive strength and rail-swing behavior as Amp 2; shares same VCC+ and VCC–. |
| 13 | Inverting Input (Amp 3) | High-impedance node (4GΩ || 1.5pF) - minimizes loading on preceding filter or sensor circuitry. |
| 14 | Output (Amp 4) | Final channel output - supports unity-gain buffer configuration with <4µs settling time to 0.1% for step inputs. |
Key Features
| Feature | Design Value |
|---|---|
| Common-mode input range includes V– | Enables direct interfacing with ground-referenced sensors (e.g., shunt resistors, thermistors) without level-shifting circuitry. |
| Integrated EMI/RF filter | Reduces susceptibility to 30MHz–1GHz noise in variable-frequency drive environments, eliminating need for external ferrite beads. |
| Low input bias current (≤35nA) | Preserves accuracy in high-impedance transducer interfaces (e.g., pH electrodes, piezoelectric sensors) across full temperature range. |
| Drop-in replacement for LM2902 | Pin-compatible and functionally identical to legacy LM2902, allowing immediate BOM upgrade without layout change or requalification. |
| 2kV HBM / 1.5kV CDM ESD rating | Supports automated SMT assembly and field-replaceable module designs without additional ESD protection components. |
Applications
| AC Inverter Feedback | Uninterruptible Power Supply (UPS) |
|---|---|
Use Scenario: Monitoring DC-link voltage and phase current in 3-phase IGBT gate driver feedback paths. IC Role / Device Role / Timing Role: Quad op-amp performs simultaneous voltage scaling, current sense amplification, overcurrent comparator input conditioning, and reference buffering. Use Value: ±3mV offset and 1.2MHz GBW enable <0.5% measurement error and <10µs response to fault conditions at 50kHz switching frequency. | Use Scenario: Regulating battery charging voltage, sensing inverter output waveform distortion, and managing transfer switch logic thresholds. IC Role / Device Role / Timing Role: Configured as precision voltage reference buffer, THD+N measurement preamp, and hysteresis comparator for line/battery switchover. Use Value: Rail-to-rail output swing and 120dB channel separation prevent cross-talk between battery monitor and AC output sampling circuits. |
| Industrial Air Conditioner Control | Multi-function Printer Power Management |
Use Scenario: Conditioning signals from temperature sensors, pressure transducers, and fan tachometers in outdoor condenser units. IC Role / Device Role / Timing Role: Amplifies low-level thermistor outputs, buffers PWM fan speed references, and conditions compressor current sense signals. Use Value: –40°C to +125°C rating and 240µA/quiescent current ensure reliable operation in sealed, high-ambient-temperature enclosures with minimal self-heating. | Use Scenario: Managing fuser heater temperature feedback, paper jam detection voltage thresholds, and high-voltage bias supply regulation. IC Role / Device Role / Timing Role: Acts as error amplifier in SMPS feedback loop, comparator for paper sensor logic, and buffer for thermal cutoff reference. Use Value: 36V absolute max supply rating accommodates 24V printer main rail plus transient spikes; NC pins simplify layout routing in space-constrained engine boards. |
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 | Same SOIC-14 package; ±7mV max offset voltage (vs. ±3mV); rated for 0°C to +70°C only. | Limited to commercial-grade applications (e.g., office printers, consumer appliances) where extended temperature and tighter offset are unnecessary. | Select when cost sensitivity outweighs precision and industrial temp requirements; verify thermal derating in enclosed chassis. |
| LM2902BQDR | B-version with ±2mV max offset (BA variant), 2kV HBM/1.5kV CDM ESD, and identical –40°C to +125°C rating. | Offers improved DC accuracy for high-precision current sensing in solar microinverters and servo drives. | Choose for next-generation designs requiring lower offset drift and enhanced EMI immunity without changing footprint or bill-of-materials. |
Compared with LM2902DR, LM2902KAVQDR provides tighter offset and wider temperature range for industrial reliability; compared with LM2902BQDR, it trades 1mV offset improvement for established qualification history and broader distributor availability.
Availability
LM2902KAVQDR is available at Aetrix Electronics and suitable for AC inverters, uninterruptible power supplies, and industrial air conditioner control systems requiring stable component supply, long-term lifecycle support, and traceable sourcing from authorized channels.
Supply support for LM2902KAVQDR 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 over 50 years of op-amp innovation and broad industrial portfolio coverage.
The LM2902 family was designed specifically for cost-sensitive, high-reliability industrial applications demanding wide supply range, ground-sensing capability, and robust ESD performance-targeting power conversion, motor control, and sensor signal conditioning.
FAQ
What is the maximum operating junction temperature for LM2902KAVQDR?
The absolute maximum junction temperature for LM2902KAVQDR is 150°C, as specified in Section 6.1 of the TI datasheet. This limit applies across all operating conditions; sustained operation near this threshold requires thermal design validation using RθJA = 99.3°C/W for the SOIC-14 package. The device is rated for ambient temperatures up to +125°C, making LM2902KAVQDR suitable for under-hood automotive and industrial motor drive applications where board-level heating is managed via copper pour and airflow.
Does LM2902KAVQDR support rail-to-rail input operation?
LM2902KAVQDR does not support rail-to-rail input operation. Its common-mode input voltage range extends to V– (ground in single-supply use) but only up to (V+) – 1.5V at 25°C, degrading to (V+) – 2V across –40°C to +125°C. This means the positive input cannot accept signals within 1.5V of V+ without introducing nonlinear error or phase reversal. For true rail-to-rail input performance, designers should consider alternatives such as TLV2464 or OPA4340-not LM2902KAVQDR.
Can LM2902KAVQDR drive capacitive loads directly?
Yes, LM2902KAVQDR is characterized to drive capacitive loads up to 100pF while maintaining stability, as confirmed in Section 6.6 of the TI datasheet. This capability enables direct connection to ADC input filters, cable-driven lines, and small-panel LCD bias networks without external isolation resistors. For loads exceeding 100pF, a series resistor (≥10Ω) is recommended between the output and capacitance to preserve phase margin and prevent oscillation-verified in typical application curves Figure 9-2 through 9-4.
Is LM2902KAVQDR pin-compatible with LM324?
No, LM2902KAVQDR is not pin-compatible with LM324. While both are quad op-amps in SOIC-14 packages, LM324 uses a different pinout: its VCC– (ground) is on Pin 11, whereas LM2902KAVQDR places VCC– on Pin 11 only in the D-package variant-but LM2902KAVQDR's Pin 11 is NC (no connect), and VCC– is on Pin 4. This mismatch means direct substitution would cause incorrect power connection and potential damage. LM2902KAVQDR is pin-compatible only with other LM2902-series variants (e.g., LM2902K, LM2902KV), not LM324 or LM224 families.
What is the typical input bias current of LM2902KAVQDR at +125°C?
The typical input bias current of LM2902KAVQDR at +125°C is –60nA, as specified in Section 6.6 (Electrical Characteristics for LM2902B and LM2902BA) of the TI datasheet. This value represents the worst-case typical (not maximum) current drawn by either input terminal under full-temperature operation. At room temperature (25°C), the typical bias current is –35nA. Designers using high-impedance sources (>100kΩ) must account for this leakage-induced offset, especially in precision integrators or pH probe interfaces where bias current directly contributes to output drift.
LM2902KAVQDR 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:
- 0.5V/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):
- 30 V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
LM2902KAVQDR FAQ
1.How can I place an order for LM2902KAVQDR through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2902KAVQDR 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 LM2902KAVQDR reliable?
The price and inventory of LM2902KAVQDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2902KAVQDR is usually 5 days.
3.What payment methods are accepted for LM2902KAVQDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2902KAVQDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2902KAVQDR?
LM2902KAVQDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2902KAVQDR 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 LM2902KAVQDR?
For technical support, including LM2902KAVQDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2902KAVQDR requirements.
6.How does Aetrix verify that LM2902KAVQDR is sourced from the original manufacturer or authorized distributors?
All LM2902KAVQDR 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 LM2902KAVQDR meets industry standards.
7.What is the process for return or replacement of LM2902KAVQDR?
All LM2902KAVQDR units undergo pre-shipment inspection (PSI). If there is an issue with LM2902KAVQDR, 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 LM2902KAVQDR part is unused and in its original packaging.
Return procedure for LM2902KAVQDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM2902KAVQDR Tags
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LM358DT
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LM358DR
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LM358ADR
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