LM324QDRQ1 - Quad Op Amp, 1MHz, RRO | Texas Instruments
MPN: LM324QDRQ1 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0.85 | $0.85 |
| 10 | $0.76 | $7.60 |
| 100 | $0.68 | $68.00 |
| 500 | $0.61 | $305.00 |
| 1,000 | $0.55 | $550.00 |
Drop-in alternatives for LM324QDRQ1 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
LMV324QDRQ1
✅ Drop-In📋 Reference alternative (not in catalog)
LMV324AQDRQ1
✅ Drop-In📋 Reference alternative (not in catalog)
LM2904QDRQ1
✅ Drop-In✓ In Stock
$0.22 / Unit
View Datasheet →LM358DR
✅ Drop-In✓ In Stock
$0.08 / Unit
View Datasheet →LM324DR
✅ Drop-In📋 Reference alternative (not in catalog)
LM324QDRQ1 Maximum Ratings & Electrical Characteristics
| Number of Channels | 4 |
| Supply Voltage Range | 2.7 V to 5.5 V |
| Gain Bandwidth Product | 1 MHz |
| Input Offset Voltage (Max) | 4 mV |
| Quiescent Current per Amplifier | 100 µA |
| Output Type | Rail-to-Rail |
| Common Mode Rejection Ratio (CMRR) | 65 dB (typical) |
| Slew Rate | 1 V/µs |
| Operating Temperature Range | -40°C to +125°C |
| Package | 14-SOIC (D) |
| Mounting Type | Surface Mount |
| AEC-Q100 Qualified | Yes |
| RoHS Compliant | Yes |
| Input Common-Mode Voltage Range | 0 V to VCC-1.5 V |
| Output Current (Max) | 40 mA |
LM324QDRQ1 Pin Configuration
| Pin 1 | 1OUT — Output of amplifier 1 |
| Pin 2 | 1IN- — Inverting input of amplifier 1 |
| Pin 3 | 1IN+ — Non-inverting input of amplifier 1 |
| Pin 4 | VCC — Positive power supply |
| Pin 5 | 2IN+ — Non-inverting input of amplifier 2 |
| Pin 6 | 2IN- — Inverting input of amplifier 2 |
| Pin 7 | 2OUT — Output of amplifier 2 |
| Pin 8 | 3OUT — Output of amplifier 3 |
| Pin 9 | 3IN- — Inverting input of amplifier 3 |
| Pin 10 | 3IN+ — Non-inverting input of amplifier 3 |
| Pin 11 | GND — Ground |
| Pin 12 | 4IN+ — Non-inverting input of amplifier 4 |
| Pin 13 | 4IN- — Inverting input of amplifier 4 |
| Pin 14 | 4OUT — Output of amplifier 4 |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this component. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
LM324QDRQ1 is suitable for 6 applications: Automotive Sensor Signal Conditioning, Battery Management Systems, Motor Control Circuits, Portable and Battery-Powered Devices, Industrial Process Control, Test and Measurement Equipment.
Automotive Sensor Signal Conditioning
The LM324QDRQ1 is ideal for conditioning signals from automotive sensors such as temperature, pressure, and position sensors. Its low-voltage operation (2.7V to 5.5V) matches the 3.3V and 5V supply rails commonly used in automotive ECUs. The rail-to-rail output maximizes the dynamic range for ADC interfacing, while the AEC-Q100 qualification ensures reliability in harsh environments. The quad configuration allows multiple sensor channels to be processed in a single IC, reducing board space and cost. The 1 MHz bandwidth is sufficient for most sensor signals, and the low quiescent current (100 µA per amp) minimizes power consumption in always-on systems.
Recommended
Battery Management Systems
In battery management systems (BMS), the LM324QDRQ1 is used for current sensing and voltage monitoring. Its low supply voltage range is compatible with battery voltages in portable and automotive applications. The rail-to-rail output allows accurate measurement of small voltage drops across sense resistors. The quad configuration enables monitoring of multiple cells or parameters simultaneously. The low quiescent current is crucial for minimizing battery drain in standby mode. The device's wide temperature range (-40°C to +125°C) ensures operation in extreme conditions. The 1 MHz bandwidth is adequate for current sensing at moderate frequencies.
Recommended
Motor Control Circuits
The LM324QDRQ1 is used in motor control circuits for current sensing and feedback signal conditioning. Its low-voltage operation is suitable for control electronics powered by 3.3V or 5V supplies. The rail-to-rail output ensures that the feedback signal can drive the full input range of ADCs or comparators. The quad configuration allows for multiple feedback loops, such as phase current sensing and position feedback. The device's robustness, including short-circuit protection, is beneficial in motor drive environments. The 1 MHz bandwidth is sufficient for most motor control loops, and the low quiescent current reduces power dissipation in the control circuitry.
Recommended
Portable and Battery-Powered Devices
The LM324QDRQ1 is well-suited for portable devices due to its low supply voltage (2.7V to 5.5V) and low quiescent current (100 µA per amplifier). It can be used in audio signal conditioning, sensor interfaces, and power management circuits. The rail-to-rail output is beneficial for maximizing signal swing in battery-powered systems. The small SOIC package is ideal for space-constrained designs. The device's wide temperature range ensures reliable operation in various environments. The 1 MHz bandwidth is adequate for audio and sensor applications, and the low power consumption extends battery life.
Recommended
Industrial Process Control
In industrial process control, the LM324QDRQ1 is used for signal conditioning of transducers and sensors. Its low-voltage operation is compatible with modern industrial control systems that use 3.3V or 5V logic. The rail-to-rail output allows direct interfacing with ADCs in microcontrollers. The quad configuration enables multiple channels for monitoring various process parameters. The device's robustness, including short-circuit protection, is important in industrial environments. The 1 MHz bandwidth is sufficient for most process control signals, and the low quiescent current reduces power consumption in remote monitoring stations.
Recommended
Test and Measurement Equipment
The LM324QDRQ1 is used in test and measurement equipment for signal conditioning and buffering. Its low-voltage operation is suitable for portable instruments powered by batteries. The rail-to-rail output ensures accurate signal reproduction over the full supply range. The quad configuration allows for multiple measurement channels in a single device. The device's low input offset voltage (4 mV max) ensures accuracy in DC measurements. The 1 MHz bandwidth is adequate for many test signals, and the low quiescent current is beneficial for battery-powered instruments.
Recommended
Recommended Products Summary
Engineering reference data for LM324QDRQ1 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | LMV324QDRQ1 | LMV324AQDRQ1 | LM2904QDRQ1 | LM358DR | LM324DR |
|---|---|---|---|---|---|---|
| Package | 14-SOIC | 14-SOIC | 14-SOIC | 14-SOIC | 14-SOIC | 14-SOIC |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Number of Channels | 4 | 4 | 4 | 2 | 2 | 4 |
| Supply Voltage Range | 2.7V to 5.5V | 2.7V to 5.5V | 2.7V to 5.5V | 3V to 26V | 3V to 32V | 3V to 32V |
| Gain Bandwidth Product | 1 MHz | 1 MHz | 1 MHz | 0.7 MHz | 0.7 MHz | 1.2 MHz |
| Input Offset Voltage (Max) | 4 mV | 4 mV | 1 mV | 7 mV | 7 mV | 7 mV |
| Quiescent Current per Amplifier | 100 µA | 100 µA | 100 µA | 250 µA | 250 µA | 250 µA |
| Output Type | Rail-to-Rail | Rail-to-Rail | Rail-to-Rail | Standard | Standard | Standard |
Key Differentiators
- Low-voltage operation (2.7V to 5.5V) (vs LM324DR)
- Rail-to-rail output (vs LM324DR)
- AEC-Q100 qualified (vs LM324DR)
Design Notes
Ensure proper power supply decoupling. Place a 0.1 µF ceramic capacitor close to the VCC pin and a 10 µF electrolytic capacitor at the power entry point. This helps to filter high-frequency noise and stabilize the supply voltage, which is critical for maintaining the op amp's performance.
Use a ground plane to minimize noise and parasitic inductance. Keep the input traces short and shielded if possible. Avoid routing high-speed digital signals near the input pins to prevent coupling. The SOIC package has a thermal pad; connect it to the ground plane for better heat dissipation.
Do not exceed the input common-mode voltage range (0V to VCC-1.5V) to avoid output phase reversal. Also, ensure the output load does not exceed the maximum output current of 40 mA. For capacitive loads, add a series resistor to maintain stability.
Compliance Information
AEC-Q100 qualified per TI product page. RoHS compliant. REACH compliance assumed based on TI's global compliance.
