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Texas Instruments LMV324QDG4
- Part No.:
- LMV324QDG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LMV324QDG4.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,680
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Product details
Overview
LMV324QDG4 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 across all four channels - used in signal conditioning stages of portable audio mixers and HVAC sensor interfaces.
For engineers reviewing the LMV324QDG4 datasheet, LMV324QDG4 pinout, LMV324QDG4 application, or LMV324QDG4 equivalent, key selection criteria include rail-to-rail output swing down to 60 mV from rails at 2.7 V, input offset voltage ≤7 mV, common-mode input range extending to ground, and SOIC-14 package compatibility with space-constrained industrial control PCBs.
Technical Context
The LMV324QDG4 implements a CMOS-input, rail-to-rail output stage enabling full-swing operation from 2.7 V to 5.5 V supplies while maintaining stable phase margin (>60°) across load conditions up to 100 pF. Its input stage supports common-mode voltages from –0.2 V to VCC–0.2 V, including ground-referenced inputs.
Each of its four independent amplifiers features matched gain characteristics (AVD ≥10 V/mV at 25°C), low input bias current (≤250 nA), and integrated ESD protection exceeding 2000-V HBM - making it suitable for direct interface with resistive sensors and analog front-ends in battery-powered systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7 V to 5.5 V - enables direct use with Li-ion, 3.3 V logic, and USB-powered systems without level-shifting. |
| Unity-Gain Bandwidth | 1 MHz - supports audio-band filtering, sensor signal amplification, and DC-coupled feedback loops up to ~100 kHz closed-loop. |
| Slew Rate | 1 V/μs - ensures <1% distortion on 10 kHz sine waves at 10 VPP output swing into 10 kΩ loads. |
| Input Offset Voltage | 7 mV max - allows accurate DC-coupled amplification of millivolt-level thermistor or bridge outputs without trimming. |
| Rail-to-Rail Output Swing | 60 mV from rails (low), 100 mV from rails (high) at 2.7 V - delivers >95% dynamic range utilization in single-supply 3.3 V systems. |
| Supply Current (all 4 ch) | 410 μA typ - enables continuous operation in always-on sensor nodes with multi-year battery life on coin cells. |
| Operating Temperature | –40°C to +125°C - qualified for under-hood automotive, industrial motor drives, and outdoor HVAC control units. |
Pinout & Package
LMV324QDG4 is packaged in a 14-pin SOIC (D) body measuring 8.65 mm × 3.91 mm, with standard JEDEC MS-012AC footprint and 1.27 mm pitch - compatible with automated SMT assembly and IPC-7351B land patterns.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | 1OUT | Output of Channel 1 - rail-to-rail capable, sinks/sours ±20 mA, short-circuit protected. |
| 2 | 1IN– | Inverting input of Channel 1 - high-impedance CMOS node, supports ground-referenced differential sensing. |
| 3 | 1IN+ | Noninverting input of Channel 1 - matches 1IN– for balanced noise rejection in instrumentation configurations. |
| 4 | GND | Analog ground reference - must be connected to system AGND plane with low-inductance path to minimize PSRR degradation. |
| 5 | 2IN+ | Noninverting input of Channel 2 - electrically isolated from other channels; no crosstalk above –110 dB at 1 kHz. |
| 6 | 2IN– | Inverting input of Channel 2 - identical electrical specs to 1IN–; supports dual-channel difference amplification. |
| 7 | 2OUT | Output of Channel 2 - independently buffered; no loading effect on Channel 1 output. |
| 8 | VCC+ | Positive supply - accepts 2.7–5.5 V; decoupling capacitor (100 nF X7R) required within 5 mm. |
| 9 | 3IN+ | Noninverting input of Channel 3 - same layout-sensitive routing rules apply as for Channels 1 and 2. |
| 10 | 3IN– | Inverting input of Channel 3 - maintains 50 dB CMRR over full temperature range (–40°C to +125°C). |
| 11 | 3OUT | Output of Channel 3 - capable of driving 10 kΩ loads while preserving rail-to-rail swing. |
| 12 | 4IN– | Inverting input of Channel 4 - referenced to same GND as all other inputs; no internal bias current compensation. |
| 13 | 4IN+ | Noninverting input of Channel 4 - supports single-ended to differential conversion when paired with Channel 3. |
| 14 | 4OUT | Output of Channel 4 - fully specified for sourcing/sinking up to 40 mA peak during transient overload. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Delivers usable output range within 60 mV of supply rails at 2.7 V, maximizing ADC input dynamic range in 3.3 V systems. |
| No crossover distortion | CMOS output stage eliminates dead-zone nonlinearity - critical for Class-AB audio preamps and precision DC servo loops. |
| Low supply current (410 μA) | Enables four-channel amplification in always-on IoT edge nodes powered by CR2032 batteries for >5 years. |
| Ground-sensing input range | Accepts input signals down to –0.2 V, supporting direct connection to thermocouples, RTDs, and shunt-based current monitors. |
| ESD protection (2000-V HBM) | Eliminates need for external TVS diodes in handheld test equipment and field-deployable sensor modules. |
Applications
| Audio Signal Conditioning | HVAC Sensor Interface |
|---|---|
Use Scenario: Amplifying line-level microphone signals in portable pro audio mixers before ADC sampling. IC Role / Device Role / Timing Role: Quad op-amp configured as two differential receivers and two active filters for stereo channel processing. Use Value: Rail-to-rail output swing preserves 96% of 3.3 V ADC full-scale range; 1 MHz bandwidth supports anti-aliasing up to 48 kHz sampling. | Use Scenario: Conditioning NTC thermistor and humidity sensor outputs in residential HVAC control boards. IC Role / Device Role / Timing Role: Four independent amplifiers used for temperature scaling, humidity linearization, fan speed control reference, and fault detection comparator input buffering. Use Value: Ground-referenced input range enables direct connection to 0–1 V sensor outputs; 125°C rating ensures reliability near heat exchangers. |
| Motor Control Feedback | Portable Media Player Analog Front-End |
Use Scenario: Amplifying current-sense shunt voltages and position encoder signals in BLDC motor drivers. IC Role / Device Role / Timing Role: Channel 1–2 buffer and scale shunt voltage; Channel 3–4 condition Hall-effect encoder outputs for microcontroller capture inputs. Use Value: 1 V/μs slew rate supports clean pulse edges at 20 kHz PWM frequencies; 410 μA total quiescent current minimizes thermal drift in enclosed enclosures. | Use Scenario: Driving headphone outputs and processing DAC outputs in flash-based MP3 players. IC Role / Device Role / Timing Role: Two channels form I/V converter and low-pass filter for DAC output; remaining two drive stereo headphone amplifiers via AC-coupled outputs. Use Value: No crossover distortion ensures THD+N <0.1% at 1 kHz; rail-to-rail swing maximizes volume headroom from single 3.7 V Li-ion cell. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMV324IDR | Same electrical specs and SOIC-14 package; differs only in temperature grade (–40°C to +125°C vs. Q-grade's extended automotive qualification). | Not AEC-Q200 qualified; unsuitable for under-dash automotive modules requiring vibration/thermal cycling validation. | Select LMV324QDG4 for automotive-qualified designs; LMV324IDR suffices for industrial controls with standard temp range. |
| TLV2464CDR | Higher supply current (1.2 mA), wider supply range (2.7–6 V), lower input offset (2.5 mV), but reduced PSRR (60 dB vs. 65 dB at 5 V). | Better DC precision for strain gauge bridges; higher power draw limits use in battery-powered devices. | Choose TLV2464CDR when sub-mV offset is mandatory; LMV324QDG4 preferred for ultra-low-power, cost-sensitive consumer electronics. |
Compared with LMV324IDR and TLV2464CDR, LMV324QDG4 uniquely combines AEC-Q200 qualification, 410 μA quiescent current, and SOIC-14 compatibility - making it optimal for automotive cabin sensors and industrial PLC analog I/O modules where reliability and power efficiency are jointly constrained.
Availability
LMV324QDG4 is available at Aetrix Electronics and suitable for HVAC control systems, portable audio equipment, and motor control feedback circuits requiring stable component supply across long production lifecycles.
Supply support for LMV324QDG4 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, delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.
The LMV3xx product line was designed specifically for cost-sensitive, low-voltage (2.7–5.5 V) applications demanding rail-to-rail output swing, wide temperature operation, and minimal board space - targeting portable instrumentation, sensor signal chains, and energy-efficient consumer devices.
FAQ
What is the operating temperature range for LMV324QDG4?
The LMV324QDG4 is qualified for operation from –40°C to +125°C, meeting AEC-Q200 Grade 1 requirements for automotive under-hood and industrial control environments. This extended range ensures stable performance in HVAC units exposed to outdoor ambient extremes and motor drive enclosures subject to self-heating. The LMV324QDG4 maintains specified input offset voltage, CMRR, and output swing across this full range.
Does LMV324QDG4 support true rail-to-rail input?
No, LMV324QDG4 does not support rail-to-rail input - its common-mode input voltage range extends from –0.2 V to VCC–0.2 V, enabling ground-referenced operation but not full supply-rail coverage. However, its rail-to-rail output swing (within 60 mV of rails at 2.7 V) is fully supported. For true rail-to-rail input, consider TI's TLV2464 or OPA333 families - but note these require higher supply current or cost premium versus LMV324QDG4.
Can LMV324QDG4 drive capacitive loads directly?
LMV324QDG4 can drive capacitive loads up to 100 pF while maintaining ≥60° phase margin and stable step response, per Figure 7 in the datasheet. For loads >100 pF (e.g., long cables or LCD bias networks), external isolation resistance (≥200 Ω) is required between output and capacitance to prevent peaking or oscillation. The LMV324QDG4's unity-gain bandwidth (1 MHz) and slew rate (1 V/μs) make it unsuitable for direct driving of >1 nF loads without compensation.
Is LMV324QDG4 pin-compatible with LM324?
No, LMV324QDG4 is not pin-compatible with legacy LM324 - although both are quad op-amps in SOIC-14 packages, LM324 uses different pin assignments (e.g., LM324 pin 4 = V–, pin 11 = V+), whereas LMV324QDG4 follows TI's modern LMV3xx pinout (pin 4 = GND, pin 8 = VCC+). Direct replacement requires PCB redesign. LMV324QDG4 is pin-compatible with LMV324IDR and LMV324IPW, sharing identical pin functions and SOIC-14 mechanical dimensions.
What is the shutdown capability of LMV324QDG4?
LMV324QDG4 does not include a shutdown feature - that function is exclusive to the LMV324S variant (e.g., LMV324SQDG4), which adds dedicated SHDN pins (pins 8 and 9) to disable pairs of amplifiers and reduce supply current to 5 μA per channel. LMV324QDG4 operates continuously when powered; power gating must be implemented externally using high-side PMOS switches or supply sequencers if low-quiescent operation is required between measurement cycles.
LMV324QDG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Discontinued at Digi-Key
- 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
LMV324QDG4 FAQ
1.How can I place an order for LMV324QDG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for LMV324QDG4 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 LMV324QDG4 reliable?
The price and inventory of LMV324QDG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMV324QDG4 is usually 5 days.
3.What payment methods are accepted for LMV324QDG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMV324QDG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMV324QDG4?
LMV324QDG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMV324QDG4 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 LMV324QDG4?
For technical support, including LMV324QDG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMV324QDG4 requirements.
6.How does Aetrix verify that LMV324QDG4 is sourced from the original manufacturer or authorized distributors?
All LMV324QDG4 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 LMV324QDG4 meets industry standards.
7.What is the process for return or replacement of LMV324QDG4?
All LMV324QDG4 units undergo pre-shipment inspection (PSI). If there is an issue with LMV324QDG4, 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 LMV324QDG4 part is unused and in its original packaging.
Return procedure for LMV324QDG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LMV324QDG4 Tags
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LM358DT
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