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Texas Instruments LM2902KVQDRG4
- Part No.:
- LM2902KVQDRG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LM2902KVQDRG4.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,335
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Product details
Overview
LM2902KVQDRG4 from Texas Instruments is a quad operational amplifier optimized for single-supply operation with rail-to-rail input (V– to V+ − 1.5 V) and output swing within 1.5 V of the positive rail and 100 mV of the negative rail. It delivers 1.2 MHz gain-bandwidth, 0.5 V/μs slew rate, ±3 mV max input offset voltage at 25°C, 240 μA per amplifier quiescent current, and operates across 3 V to 36 V supply range. It is used in industrial power supply monitoring circuits where wide common-mode input range and robust ESD tolerance (2 kV HBM) are required.
For engineers reviewing the LM2902KVQDRG4 datasheet, LM2902KVQDRG4 pinout, LM2902KVQDRG4 application, or LM2902KVQDRG4 equivalent, key selection criteria include its extended temperature range (−40°C to +125°C), SOIC-14 package compatibility, drop-in replacement capability for legacy LM2902 variants, and verified performance in multi-function printer sensor signal conditioning and AC inverter voltage feedback loops.
Technical Context
The LM2902KVQDRG4 implements a standard BJT-input op-amp architecture with four independent amplifiers sharing a common VCC+ and VCC− (ground) supply pins. Its input stage supports common-mode voltages down to the negative rail, enabling direct sensing of ground-referenced signals without level-shifting circuitry.
It features integrated RF/EMI filtering to suppress high-frequency interference in noisy industrial environments and achieves unity-gain stability without external compensation. The device maintains specified electrical performance over its full operating temperature range (−40°C to +125°C), distinguishing it from commercial-grade LM324 variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3 V to 36 V - enables direct use in 5 V, 12 V, 24 V, and 32 V industrial power rails without regulation |
| Input Offset Voltage (max) | ±3 mV at 25°C - ensures ≤3 mV DC error in precision sensor amplification stages |
| Quiescent Current (per amp) | 240 μA typical - supports low-power system design with total 960 μA for all four amplifiers |
| Gain-Bandwidth Product | 1.2 MHz - supports stable closed-loop operation up to ~100 kHz with moderate gain |
| Slew Rate | 0.5 V/μs - limits large-signal response time to ≥2 μs for 1 V step, suitable for slow control loops |
| Common-Mode Input Range | V– to (V+ − 1.5 V) - allows direct interface with 0 V referenced transducers and current-sense resistors |
| Output Swing (V–) | 100 mV above V– at 50 μA load - enables accurate low-side current sensing with minimal headroom loss |
| ESD Rating (HBM) | 2 kV - meets IEC 61000-4-2 Level 2 for handling robustness in manufacturing and field service |
Pinout & Package
LM2902KVQDRG4 is housed in a 14-pin SOIC (D) package measuring 8.65 mm × 6 mm, with standard JEDEC MS-012AC footprint and gull-wing leads. Pin 1 is marked by a beveled corner or dot; pin numbering follows counter-clockwise convention when viewing top side.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (1IN–) | Negative input of Amp 1 | Inverting node for first amplifier; accepts signals down to V– |
| 2 (1IN+) | Positive input of Amp 1 | Non-inverting node; supports common-mode input to V– |
| 3 (1OUT) | Output of Amp 1 | Delivers amplified signal with 1.5 V headroom to V+ and 100 mV to V– |
| 4 (VCC+) | Positive supply | Connects to main system rail (3–36 V); decoupling capacitor required |
| 5 (2IN+) | Positive input of Amp 2 | Independent non-inverting input; no internal connection to other amps |
| 6 (2IN–) | Negative input of Amp 2 | Independent inverting input; supports differential configurations |
| 7 (2OUT) | Output of Amp 2 | Electrically isolated output; drives loads up to 10 mA sink/source |
| 8 (3OUT) | Output of Amp 3 | Third independent output; shares VCC+ and VCC− with other amps |
| 9 (3IN–) | Negative input of Amp 3 | Third inverting input; identical electrical specs to Pins 1 and 6 |
| 10 (3IN+) | Positive input of Amp 3 | Third non-inverting input; supports rail-to-rail common-mode range |
| 11 (VCC−) | Negative supply / Ground | Reference node for all amplifiers; must be low-impedance path to system ground |
| 12 (4IN+) | Positive input of Amp 4 | Fourth non-inverting input; fully independent with same specs |
| 13 (4IN–) | Negative input of Amp 4 | Fourth inverting input; usable for summing or comparator functions |
| 14 (4OUT) | Output of Amp 4 | Final output; capable of driving capacitive loads up to 100 pF |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input stage | Accepts common-mode signals from V– to (V+ − 1.5 V), eliminating need for input biasing in single-supply designs |
| Extended temperature grade | Specified from −40°C to +125°C - qualified for under-hood automotive and industrial motor drive applications |
| Drop-in replacement for LM2902 | Pin-compatible and functionally equivalent to legacy LM2902, enabling seamless upgrade without PCB changes |
| Integrated EMI/RF filter | Reduces susceptibility to 100 MHz–1 GHz noise in switching power supplies and motor drives |
| Low quiescent current | 240 μA per amplifier enables battery-backed monitoring circuits with >1-year runtime on coin cells |
| High ESD robustness | 2 kV HBM rating simplifies board-level ESD protection design and improves manufacturing yield |
Applications
| Power Supply Monitoring | Multi-Function Printer Sensors |
|---|---|
Use Scenario: Real-time monitoring of +12 V and +24 V rails in industrial SMPS units using resistor-divider networks and ADC front-end buffering. IC Role / Device Role / Timing Role: Quad op-amp configured as four independent voltage followers and difference amplifiers for isolated rail sensing. Use Value: Enables simultaneous measurement of four independent supply rails with <3 mV offset-induced error and immunity to ripple coupling via EMI filtering. | Use Scenario: Signal conditioning of paper jam, toner level, and fuser temperature sensors in office MFPs operating across 0°C–40°C ambient. IC Role / Device Role / Timing Role: Amplifier for thermistor, photodiode, and piezoresistive sensor outputs feeding 12-bit SAR ADCs. Use Value: Delivers stable DC gain and low drift (<7 µV/°C) across full temperature range, ensuring consistent sensor accuracy without calibration rework. |
| AC Inverter Voltage Feedback | Uninterruptible Power Supply (UPS) Control |
Use Scenario: Closed-loop voltage regulation in 3-phase string inverters, where DC bus voltage (300–800 V) is scaled and fed to controller via isolation amplifier. IC Role / Device Role / Timing Role: First-stage buffer and level shifter for isolated voltage sense signals before isolation barrier. Use Value: Common-mode input range extending to V– allows direct interface with isolated shunt-based sensing, reducing component count vs. rail-splitter solutions. | Use Scenario: Battery voltage monitoring, charger status indication, and inverter enable logic in line-interactive UPS systems. IC Role / Device Role / Timing Role: Comparator and precision reference buffer for battery health estimation and transfer switching control. Use Value: Guaranteed operation at −40°C enables reliable cold-start behavior in outdoor UPS deployments, while low IQ extends backup runtime. |
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; ±7 mV max input offset voltage (vs. ±3 mV); rated for 0°C to +70°C only | Limited to commercial-temperature applications; unsuitable for under-hood or industrial enclosures | Select LM2902DR only for cost-sensitive, non-extended-temp consumer electronics with relaxed DC accuracy needs. |
| LM2902BQDR | B-version with ±3 mV max offset and −40°C to +125°C rating; identical pinout and electrical specs to LM2902KVQDRG4 | No functional difference; TI lists LM2902B as direct replacement for LM2902K/LM2902KV family | LM2902BQDR is functionally identical and recommended for new designs requiring guaranteed B-version performance. |
Compared with LM2902DR, LM2902KVQDRG4 provides tighter offset and extended temperature support; compared with LM2902BQDR, it shares identical specifications but reflects TI's legacy KV suffix designation for automotive-qualified variants-both are valid for industrial use with no layout or firmware changes required.
Availability
LM2902KVQDRG4 is available at Aetrix Electronics and suitable for industrial power supplies, multi-function printers, and AC inverters requiring stable component supply, long-term lifecycle assurance, and traceable sourcing from authorized channels.
Supply support for LM2902KVQDRG4 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 decades of experience in precision op-amps and industrial-grade signal chain components.
The LM2902KVQDRG4 belongs to TI's legacy LMx24 family of general-purpose quad op-amps, designed specifically for cost-sensitive industrial, appliance, and power conversion applications demanding reliability, wide supply range, and single-supply operability.
FAQ
What is the maximum operating temperature range for LM2902KVQDRG4?
The LM2902KVQDRG4 is specified to operate from −40°C to +125°C, making it suitable for under-hood automotive modules, industrial motor drives, and outdoor power electronics where ambient temperatures exceed commercial-grade limits. This extended range is confirmed in Section 6.3 of the official TI datasheet SLOS066AE, and distinguishes LM2902KVQDRG4 from standard LM2902 variants rated only to +70°C.
Is LM2902KVQDRG4 pin-compatible with older LM2902 versions?
Yes, LM2902KVQDRG4 uses the standard 14-pin SOIC (D) package with identical pinout to LM2902, LM2902K, and LM2902DR. All input, output, and supply terminals match exactly, enabling drop-in replacement without PCB modification. TI explicitly states in the "B versions are drop-in replacements" feature that LM2902B/KV variants maintain full mechanical and electrical compatibility with legacy LM2902 devices.
Does LM2902KVQDRG4 support rail-to-rail output swing?
No, LM2902KVQDRG4 does not provide rail-to-rail output. Its output swings to within 1.5 V of the positive supply (V+) and to within 100 mV of the negative supply (V−) under light load (50 μA). At 1 mA load, the negative swing degrades to 0.75 V above V−. This is documented in Table 6.6 under "Voltage output swing from rail" and is consistent across the LM2902B/KV family.
What is the input bias current specification for LM2902KVQDRG4?
The LM2902KVQDRG4 has a maximum input bias current of −35 nA at 25°C and −60 nA across the full −40°C to +125°C range, as specified in Section 6.6 of the TI datasheet. This low bias current minimizes voltage errors in high-impedance sensor interfaces such as thermistor networks and photodiode transimpedance stages, especially critical in precision analog front-ends.
Can LM2902KVQDRG4 drive capacitive loads directly?
Yes, LM2902KVQDRG4 is characterized to drive capacitive loads up to 100 pF while maintaining stability, as stated in the "Capacitive load drive" parameter (CLOAD = 100 pF) in Section 6.6. For larger loads, external series resistance (e.g., 10–100 Ω) is recommended at the output to prevent peaking or oscillation, particularly in applications like ADC input buffering where stray capacitance may exceed 100 pF.
LM2902KVQDRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
LM2902KVQDRG4 FAQ
1.How can I place an order for LM2902KVQDRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2902KVQDRG4 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 LM2902KVQDRG4 reliable?
The price and inventory of LM2902KVQDRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2902KVQDRG4 is usually 5 days.
3.What payment methods are accepted for LM2902KVQDRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2902KVQDRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2902KVQDRG4?
LM2902KVQDRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2902KVQDRG4 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 LM2902KVQDRG4?
For technical support, including LM2902KVQDRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2902KVQDRG4 requirements.
6.How does Aetrix verify that LM2902KVQDRG4 is sourced from the original manufacturer or authorized distributors?
All LM2902KVQDRG4 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 LM2902KVQDRG4 meets industry standards.
7.What is the process for return or replacement of LM2902KVQDRG4?
All LM2902KVQDRG4 units undergo pre-shipment inspection (PSI). If there is an issue with LM2902KVQDRG4, 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 LM2902KVQDRG4 part is unused and in its original packaging.
Return procedure for LM2902KVQDRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM2902KVQDRG4 Tags
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LM358DT
STMicroelectronics
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LM358DR
Texas Instruments
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LM2904DR
Texas Instruments
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LM358ADR
Texas Instruments
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LM2904DGKR
Texas Instruments
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LM324DR
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MCP6006T-E/OT
Microchip Technology
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MCP6006UT-E/OT
Microchip Technology
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LM324PWR
Texas Instruments
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LM2902PWR
Texas Instruments
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LM2902DR
Texas Instruments
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LM358P
Texas Instruments
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