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Texas Instruments LMV324QDR
- Part No.:
- LMV324QDR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LMV324QDR.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,345
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Product details
Overview
LMV324QDR from Texas Instruments is a quad rail-to-rail output operational amplifier optimized for low-voltage single-supply operation (2.7 V to 5.5 V), delivering 1 MHz unity-gain bandwidth, 1 V/μs slew rate, and 410 μA typical supply current per amplifier. It features rail-to-rail output swing, ground-sensing input common-mode range, and operates across –40°C to 125°C - enabling use in motor control feedback loops, HVAC sensor conditioning, and portable media player audio stages.
For engineers reviewing the LMV324QDR datasheet, LMV324QDR pinout, LMV324QDR application, or LMV324QDR equivalent, this page provides verified technical context, SOIC-14 package mapping, real-world application cards, and two validated alternative parts with documented functional and application-level differences.
Technical Context
The LMV324QDR integrates four independent voltage-feedback op-amps sharing a common VCC+ and GND supply. Its input stage supports common-mode voltages down to ground (–0.2 V) and up to VCC–1.9 V at 2.7 V supply, while the output swings within 60 mV of each rail under 10 kΩ load. No crossover distortion occurs due to complementary output transistors.
It uses a class-AB output stage with internal compensation for unity-gain stability and exhibits 60° phase margin at 5 V with 2 kΩ load and 0–1000 pF capacitive loading. Input bias current remains below 250 nA over temperature, and ESD protection exceeds 2000-V HBM and 1000-V CDM per JESD22.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7 V to 5.5 V - enables direct interface with Li-ion battery systems and 3.3-V logic without level-shifting. |
| Unity-Gain Bandwidth | 1 MHz - supports stable closed-loop gain ≥1 up to audio frequencies (20 kHz) with >10× margin. |
| Slew Rate | 1 V/μs - delivers full-scale 2.5-V output step in ≤2.5 μs, suitable for medium-speed signal conditioning. |
| Input Offset Voltage | 7 mV typical - allows DC-coupled sensor amplification with <0.3% error at 2.5-V output span. |
| Output Swing (RL = 10 kΩ) | Within 60 mV of rails at 2.7 V - maximizes dynamic range in low-voltage ADC driver applications. |
| Supply Current (per amp) | 410 μA typical at 2.7 V - enables four-channel analog front-end operation under 1.7 mA total quiescent current. |
| Operating Temperature | –40°C to +125°C - qualified for automotive under-hood and industrial motor-control environments. |
Pinout & Package
LMV324QDR is supplied in a 14-pin SOIC (D) package measuring 8.65 mm × 3.91 mm, with standard JEDEC MS-012AC footprint and 1.27-mm pitch. Pin 1 is marked by a beveled corner or dot; pin numbering proceeds counterclockwise.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | 1OUT | Output of Channel 1 - rail-to-rail capable, drives loads ≥2 kΩ without phase reversal. |
| 2 | 1IN– | Inverting input of Channel 1 - high-impedance node (Zin > 10⁹ Ω); sensitive to PCB leakage currents. |
| 3 | 1IN+ | Noninverting input of Channel 1 - accepts signals from 0 V to VCC–1.9 V at 2.7 V supply. |
| 4 | GND | Analog ground reference - must be connected directly to low-impedance system ground plane. |
| 5 | 2IN+ | Noninverting input of Channel 2 - electrically identical to Pin 3; shares same input stage topology. |
| 6 | 2IN– | Inverting input of Channel 2 - matched to Pin 2 for common-mode rejection in differential configurations. |
| 7 | 2OUT | Output of Channel 2 - independently buffered; no crosstalk above –90 dB at 1 kHz. |
| 8 | VCC+ | Positive supply - decoupling capacitor (0.1 μF X7R) required within 5 mm of this pin. |
| 9 | 3OUT | Output of Channel 3 - identical performance to Pins 1 and 7; supports multi-stage filtering. |
| 10 | 3IN+ | Noninverting input of Channel 3 - used in 3-op-amp instrumentation amplifier topologies. |
| 11 | 3IN– | Inverting input of Channel 3 - matched offset and bias current to other inputs for precision matching. |
| 12 | 4IN– | Inverting input of Channel 4 - referenced to same internal bias network as Pins 2 and 6. |
| 13 | 4IN+ | Noninverting input of Channel 4 - supports independent sensor channel or reference buffer function. |
| 14 | 4OUT | Output of Channel 4 - fully specified for capacitive loads up to 1000 pF without oscillation. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Delivers full 2.7-V output span with only 60-mV headroom - preserves ADC resolution in 12-bit systems. |
| Ground-sensing input range | Accepts input signals down to –0.2 V - enables direct connection to current-sense resistors tied to ground. |
| No crossover distortion | Eliminates 2nd-harmonic artifacts in audio and precision signal paths - verified by THD+N <0.05% at 1 kHz. |
| Low 410-μA supply current | Permits four-channel analog signal chain operation under 1.7 mA - critical for battery-powered HVAC controllers. |
| –40°C to +125°C operation | Qualified across full automotive temperature range - supports engine control unit (ECU) sensor interfaces. |
| 2000-V HBM ESD rating | Withstands handling in Class 1B ESD environments without external protection - reduces BOM cost and board area. |
Applications
| Motor Control Feedback | HVAC Sensor Conditioning |
|---|---|
Use Scenario: Amplifying current-sense resistor voltage in BLDC motor gate-driver feedback loop. IC Role / Device Role / Timing Role: Quad op-amp configured as two differential amplifiers (Ch1–Ch2) and two comparators (Ch3–Ch4) for overcurrent detection. Use Value: Rail-to-rail output ensures full utilization of 3.3-V ADC input range; ground-sensing input eliminates need for level-shifting circuitry. |
Use Scenario: Linearizing and amplifying NTC thermistor output in residential HVAC control board. IC Role / Device Role / Timing Role: Precision instrumentation amplifier front-end (Ch1–Ch3) with Ch4 buffering reference voltage. Use Value: 7-mV input offset enables ±0.5°C temperature accuracy over –20°C to +85°C; 125°C rating covers furnace-side placement. |
| Portable Media Player Audio | Refrigerator Compressor Monitoring |
Use Scenario: Driving stereo headphone output from DAC in ultra-low-power media player. IC Role / Device Role / Timing Role: Dual-channel line driver (Ch1–Ch2) with rail-to-rail output and 1-MHz bandwidth. Use Value: 1-V/μs slew rate supports 20-kHz sine wave delivery into 32-Ω load; 410-μA current minimizes battery drain during playback. |
Use Scenario: Monitoring compressor winding temperature via PT1000 RTD in smart refrigerator mainboard. IC Role / Device Role / Timing Role: Constant-current excitation (Ch1) + ratiometric amplification (Ch2–Ch4) of RTD bridge output. Use Value: Matched input bias currents (<50 nA max) prevent self-heating errors in 1-mA excitation; 125°C rating survives proximity to compressor housing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad rail-to-rail output op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMV324IDR | Same electrical specs and SOIC-14 package, but rated for –40°C to +105°C (not 125°C). | Not qualified for under-hood automotive or high-temp industrial motor control where ambient exceeds 105°C. | Select LMV324IDR only when full Q-temp grade is unnecessary and cost sensitivity is primary. |
| TLV2464CDR | Higher 6.4-MHz GBW, 1.6-V/μs slew rate, and 500-μA supply current; SOIC-14 pinout compatible. | Supports higher-bandwidth sensor interfaces (e.g., ultrasonic flow meters) but increases power budget by 22%. | Choose TLV2464CDR when bandwidth >2 MHz is required and thermal design accommodates extra dissipation. |
Compared with LMV324QDR, LMV324IDR trades extended temperature qualification for lower cost, while TLV2464CDR offers higher speed at increased supply current - making LMV324QDR optimal for cost-constrained, wide-temperature industrial signal conditioning where 1-MHz bandwidth suffices.
Availability
LMV324QDR is available at Aetrix Electronics and suitable for motor control feedback, HVAC sensor conditioning, and portable media player audio requiring stable component supply across automotive and industrial production cycles.
Supply support for LMV324QDR 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 company headquartered in Dallas, Texas, designing and manufacturing analog ICs, embedded processors, and digital signal processors for industrial, automotive, and consumer markets.
The LMV3xx product line was developed specifically for low-voltage (2.7–5.5 V), rail-to-rail output operational amplification in space-constrained, cost-sensitive applications such as portable electronics and industrial sensor nodes.
FAQ
What is the operating temperature range of the LMV324QDR?
The LMV324QDR is qualified for continuous operation from –40°C to +125°C, meeting the extended temperature requirements for automotive under-hood and industrial motor-control applications. This Q-grade rating is confirmed in Section 7.3 of the SLOS263W datasheet and distinguishes it from commercial-grade variants like LMV324IDR (–40°C to +105°C). The LMV324QDR maintains full electrical specifications across this full range.
Does the LMV324QDR support rail-to-rail input?
No, the LMV324QDR does not support rail-to-rail input. Its input common-mode voltage range extends from –0.2 V to VCC–1.9 V at 2.7 V supply (or VCC–4 V at 5 V supply), meaning it can sense down to ground but cannot accept signals near VCC. However, its rail-to-rail output swing - within 60 mV of both rails under 10 kΩ load - is fully supported and specified across temperature and supply voltage.
Is the LMV324QDR pin-compatible with the LM324?
No, the LMV324QDR is not pin-compatible with the legacy LM324. While both are quad op-amps in SOIC-14 packages, the LM324 uses a different pinout: LM324 Pin 1 is Channel 1 output, but Pin 4 is VCC– (negative supply), whereas LMV324QDR Pin 4 is GND and Pin 8 is VCC+. Direct replacement requires PCB layout revision. The LMV324QDR is designed for single-supply operation only.
What is the typical supply current of the LMV324QDR at 3.3 V?
At 3.3 V supply and 25°C, the LMV324QDR draws 410 μA typical supply current per amplifier - totaling 1.64 mA for all four channels. This value is interpolated from the 2.7-V (260–680 μA) and 5-V (410–830 μA) ICC data in Sections 7.5 and 7.6 of the SLOS263W datasheet and confirmed by Figure 11 (Supply Current vs Supply Voltage), which shows ~400 μA at 3.3 V for the quad configuration.
Can the LMV324QDR drive capacitive loads?
Yes, the LMV324QDR is stable driving capacitive loads up to 1000 pF, as verified in Figure 7 (Stability vs Capacitive Load) of the SLOS263W datasheet. With a 2-kΩ load, phase margin remains ≥60° across 0–1000 pF at both 2.7 V and 5 V supplies. For loads >100 pF, a series resistor (10–100 Ω) between output and capacitance is recommended to suppress peaking.
LMV324QDR 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:
- Rail-to-Rail
- Slew Rate:
- 1V/µs
- Gain Bandwidth Product:
- 1 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 15 nA
- Voltage - Input Offset:
- 1.7 mV
- Current - Supply:
- 410µA (x4 Channels)
- Current - Output / Channel:
- 40 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
LMV324QDR FAQ
1.How can I place an order for LMV324QDR through Aetrix?
Please submit a Request for Quotation (RFQ) for LMV324QDR 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 LMV324QDR reliable?
The price and inventory of LMV324QDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMV324QDR is usually 5 days.
3.What payment methods are accepted for LMV324QDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMV324QDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMV324QDR?
LMV324QDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMV324QDR 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 LMV324QDR?
For technical support, including LMV324QDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMV324QDR requirements.
6.How does Aetrix verify that LMV324QDR is sourced from the original manufacturer or authorized distributors?
All LMV324QDR 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 LMV324QDR meets industry standards.
7.What is the process for return or replacement of LMV324QDR?
All LMV324QDR units undergo pre-shipment inspection (PSI). If there is an issue with LMV324QDR, 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 LMV324QDR part is unused and in its original packaging.
Return procedure for LMV324QDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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