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Texas Instruments LMV324AIDR
- Part No.:
- LMV324AIDR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LMV324AIDR.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:15,791
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Product details
Overview
LMV324AIDR from Texas Instruments is a quad-channel, rail-to-rail output operational amplifier optimized for low-voltage (2.5 V to 5.5 V) single-supply operation. It delivers ±1 mV input offset voltage, 1 MHz unity-gain bandwidth, 70 µA per channel quiescent current, and rail-to-rail output swing within 20 mV of supply rails under 10 kΩ load - enabling precision signal conditioning in space-constrained smoke detectors, wearable devices, and low-side current sensing circuits.
For engineers reviewing the LMV324AIDR datasheet, LMV324AIDR pinout, LMV324AIDR application, or LMV324AIDR equivalent, key selection considerations include its resistive open-loop output impedance (1200 Ω at 1 MHz), extended –40°C to 125°C operating range, integrated RFI/EMI filtering, and verified stability with ≥500 pF capacitive loads - critical for robust sensor interface and battery-powered analog front-end designs.
Technical Context
The LMV324AIDR employs a P-channel/N-channel complementary input stage to support rail-to-rail common-mode input (V– – 0.1 V to V+ – 1 V) without phase reversal, while its Class-AB output stage enables full rail-to-rail swing. Its resistive open-loop output impedance simplifies stabilization with high capacitive loads - unlike conventional op amps requiring external compensation for >100 pF.
Designed specifically for 2.5 V to 5.5 V operation, it maintains key specifications - including 10 pA input bias current, 30 nV/√Hz input voltage noise density at 10 kHz, and 76° phase margin at unity gain - across the full industrial temperature range. The device is unity-gain stable and features internal EMI rejection filtering referenced to the noninverting input.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 2.5 V to 5.5 V - supports direct integration into 3.3 V and 5 V systems without level-shifting or LDO overhead. |
| Input Offset Voltage | ±1 mV (typ) - enables accurate DC-coupled amplification in sensor signal chains with <0.1% initial error at room temperature. |
| Unity-Gain Bandwidth | 1 MHz - sufficient for anti-aliasing filters, active low-pass stages, and medium-speed transimpedance amplifiers up to ~100 kHz closed-loop. |
| Quiescent Current | 70 µA per channel - allows four independent amplifiers to operate continuously on microamp-level power budgets in always-on wearables or IoT endpoints. |
| Output Swing | Within 20 mV of rails (RL = 10 kΩ) - maximizes dynamic range when driving SAR ADCs with 0–VDD input ranges, especially at 3.3 V supply. |
| Capacitive Load Drive | Stable with ≥500 pF - eliminates need for isolation resistors when driving long traces, LCD bias networks, or ADC input capacitance directly. |
| Operating Temperature | –40°C to +125°C - qualified for under-hood automotive modules, HVAC controls, and industrial motor drives without derating. |
Pinout & Package
LMV324AIDR is packaged in a 14-pin SOIC (D package), 8.65 mm × 6.0 mm body size, with standard pin spacing and surface-mount compatibility. Thermal resistance RθJA is 102.1°C/W, supporting continuous operation at full rating in moderate airflow environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| V+ | Positive supply rail | Highest potential node; must be decoupled with ≥100 nF ceramic capacitor near pin 4 to suppress supply noise coupling into all four channels. |
| V− | Negative supply or ground | Lowest potential node; serves as reference for single-supply operation; connects to system GND or negative rail in dual-supply configurations. |
| OUT A, OUT B, OUT C, OUT D | Amplifier outputs | Four independent buffered outputs; each capable of sourcing/sinking ±40 mA short-circuit current and swinging rail-to-rail into 10 kΩ. |
| –IN A to –IN D | Inverting inputs | High-impedance (1013 Ω) differential inputs; accept signals down to V− – 0.1 V without phase reversal or distortion. |
| +IN A to +IN D | Noninverting inputs | Matched to inverting inputs; enable precision instrumentation topologies (e.g., difference amplifiers, current-sense buffers) with minimal CMRR degradation. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Enables full utilization of ADC input range in 3.3 V systems - e.g., 0–3.3 V output for 12-bit SAR converters without clipping or headroom loss. |
| Resistive open-loop output impedance | 1200 Ω at 1 MHz - permits direct connection to >500 pF loads without peaking or instability, eliminating series isolation resistors in filter or ADC driver stages. |
| Integrated RFI/EMI filter | Rejects >80 dB of RF interference above 10 MHz (EMIRR+ = 120 dB at 100 MHz) - critical for reliable operation near switching regulators or wireless transceivers. |
| No phase reversal on overdrive | Guaranteed behavior up to ±6 V differential input - prevents latch-up or erroneous output states during transient overvoltage events in sensor interfaces. |
| Low input bias current | ±10 pA (typ) - reduces voltage error across high-impedance sources (e.g., pH electrodes, photodiodes, thermistors) to <1 µV per GΩ source resistance. |
Applications
| Smoke Detectors | Motion Detectors |
|---|---|
Use Scenario: Amplifying weak ionization chamber or photoelectric sensor currents (nA–µA range) into clean, rail-to-rail voltage signals for MCU ADC sampling. IC Role / Device Role / Timing Role: Precision transimpedance amplifier and buffer stage with ultra-low input bias current and EMI immunity. Use Value: Enables reliable detection at <100 nA signal levels while rejecting RF noise from nearby AC wiring or wireless modules. |
Use Scenario: Conditioning pyroelectric (PIR) sensor outputs with high source impedance and sub-mV amplitude in battery-powered security sensors. IC Role / Device Role / Timing Role: Low-noise, low-power DC-coupled amplifier with rail-to-rail output for direct ADC interfacing. Use Value: Delivers 30 nV/√Hz noise floor and 70 µA/channel quiescent current - extending coin-cell life beyond 2 years in intermittent wake-up mode. |
| Wearable Devices | Low-Side Current Sensing |
Use Scenario: Amplifying bio-potential signals (ECG, EMG) or environmental sensor outputs (temperature, humidity) in compact, low-voltage wearables. IC Role / Device Role / Timing Role: Quad-channel analog front-end for multi-sensor fusion with shared supply and layout simplicity. Use Value: Four matched amplifiers in one SOIC reduce PCB area by >60% vs discrete solutions while maintaining ±1 mV offset matching across channels. |
Use Scenario: Measuring motor or load current via shunt resistor in 3.3 V/5 V embedded controllers for HVAC, appliances, or power tools. IC Role / Device Role / Timing Role: High-accuracy, unity-gain stable difference amplifier with rail-to-rail output for 0–4.9 V output scaling. Use Value: Achieves <0.5% total error (offset + gain + temp drift) over –40°C to 125°C - meeting IEC 61000-4-3 immunity requirements without external calibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMV324IDR | Higher max input offset voltage (±3 mV vs ±1 mV); same package, pinout, and supply range. | Suitable for cost-sensitive general-purpose amplification where <0.1% DC accuracy is not required. | Select LMV324IDR only if offset drift and noise performance are secondary to BOM cost reduction. |
| TLV9004IPWR | Lower quiescent current (60 µA/ch), higher GBW (1 MHz), but reduced PSRR (70 dB vs 100 dB) and no integrated EMI filter. | Better for ultra-low-power always-on monitoring; less robust in noisy industrial or automotive environments. | Choose TLV9004IPWR when minimizing sleep-mode current dominates over EMI resilience and supply rejection. |
Compared with LMV324IDR, the LMV324AIDR provides tighter DC precision and superior EMI rejection; compared with TLV9004IPWR, it trades 10 µA/ch higher quiescent current for 30 dB better PSRR and guaranteed RFI filtering - making LMV324AIDR optimal for safety-critical or electrically noisy applications.
Availability
LMV324AIDR is available at Aetrix Electronics and suitable for smoke detectors, wearable devices, and low-side current sensing applications requiring stable component supply, long-term lifecycle assurance, and traceable sourcing from Texas Instruments' authorized channel.
Supply support for LMV324AIDR 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 expertise in precision op-amps and low-power signal chain solutions.
The LMV324AIDR belongs to TI's LMV3xxA family - engineered for low-voltage, rail-to-rail output operation in portable, battery-powered, and space-constrained industrial systems where power efficiency, noise immunity, and DC accuracy are jointly critical.
FAQ
What is the maximum capacitive load the LMV324AIDR can drive without oscillation?
The LMV324AIDR is characterized for stable operation with ≥500 pF capacitive loads across its full operating range. Its resistive open-loop output impedance (1200 Ω at 1 MHz) enables this capability without external compensation. For loads exceeding 1 nF, verify phase margin using bench testing with actual board parasitics, as layout-dependent inductance may affect stability.
Does the LMV324AIDR support true rail-to-rail input?
The LMV324AIDR supports rail-to-rail output swing but has a limited input common-mode range: V– – 0.1 V to V+ – 1 V. It does not accept signals within 1 V of the positive rail. This design avoids phase reversal and ensures specified CMRR (≥86 dB) while enabling robust single-supply operation with grounded negative inputs.
What is the overload recovery time of the LMV324AIDR?
The LMV324AIDR recovers from output saturation in approximately 850 ns - defined as the time for the output to return to linear operation after an overdrive condition. This fast recovery minimizes signal distortion in pulse-amplification or comparator-like applications where input transients exceed the linear input range.
Can the LMV324AIDR be used in dual-supply configurations?
Yes, the LMV324AIDR operates with split supplies (e.g., ±1.25 V to ±2.75 V) as long as the total supply voltage remains between 2.5 V and 5.5 V. Pin 4 (V+) and Pin 11 (V−) must be biased to the respective positive and negative rails; the input common-mode range then extends from V− – 0.1 V to V+ – 1 V.
How does the EMI rejection filter in the LMV324AIDR improve system-level robustness?
The LMV324AIDR integrates an on-die RFI/EMI rejection filter referenced to the noninverting input, delivering >120 dB rejection at 100 MHz (EMIRR+). This prevents rectification of high-frequency noise into DC offsets - a critical advantage in systems near switching power supplies, Bluetooth/Wi-Fi modules, or motor drives where conducted EMI would otherwise corrupt sensor readings.
LMV324AIDR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LMV®
- 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:
- 1.7V/µs
- Gain Bandwidth Product:
- 1 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 10 pA
- Voltage - Input Offset:
- 1 mV
- Current - Supply:
- 70µA (x4 Channels)
- Current - Output / Channel:
- 40 mA
- Voltage - Supply Span (Min):
- 2.5 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
LMV324AIDR FAQ
1.How can I place an order for LMV324AIDR through Aetrix?
Please submit a Request for Quotation (RFQ) for LMV324AIDR 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 LMV324AIDR reliable?
The price and inventory of LMV324AIDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMV324AIDR is usually 5 days.
3.What payment methods are accepted for LMV324AIDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMV324AIDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMV324AIDR?
LMV324AIDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMV324AIDR 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 LMV324AIDR?
For technical support, including LMV324AIDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMV324AIDR requirements.
6.How does Aetrix verify that LMV324AIDR is sourced from the original manufacturer or authorized distributors?
All LMV324AIDR 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 LMV324AIDR meets industry standards.
7.What is the process for return or replacement of LMV324AIDR?
All LMV324AIDR units undergo pre-shipment inspection (PSI). If there is an issue with LMV324AIDR, 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 LMV324AIDR part is unused and in its original packaging.
Return procedure for LMV324AIDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LMV324AIDR Tags
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