LM2904QDRQ1 - Automotive Dual Op Amp | TI | 8-SOIC
MPN: LM2904QDRQ1 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0.45 | $0.45 |
| 10 | $0.38 | $3.80 |
| 100 | $0.3 | $30.00 |
| 500 | $0.25 | $125.00 |
| 1,000 | $0.22 | $220.00 |
Drop-in alternatives for LM2904QDRQ1 — 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:
LM2904DR
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View Datasheet →LM2904BIDR
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LM2904QDRG4Q1
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LM358DR
✅ Drop-In✓ In Stock
$0.08 / Unit
View Datasheet →LM2904DT
✅ Drop-In📋 Reference alternative (not in catalog)
LM2904DR2G
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LM2904QDRQ1 Maximum Ratings & Electrical Characteristics
| Number of Channels | 2 |
| Supply Voltage (Single) | 3 V to 26 V |
| Supply Voltage (Dual) | ±1.5 V to ±13 V |
| Gain Bandwidth Product | 700 kHz |
| Supply Current (per Amplifier) | 500 µA |
| Input Offset Voltage | 2 mV (typ) |
| Input Bias Current | 20 nA (typ) |
| Common-Mode Input Voltage Range | 0 V to VCC-1.5 V |
| Output Current | 30 mA (typ) |
| Slew Rate | 0.3 V/µs |
| Operating Temperature Range | -40°C to +125°C |
| Package | 8-SOIC (D) |
| Mounting Type | Surface Mount |
| Automotive Qualification | AEC-Q100 |
| RoHS Status | Compliant |
LM2904QDRQ1 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- — Negative supply or ground |
| 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 | VCC+ — Positive supply |
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
LM2904QDRQ1 is suitable for 6 applications: Automotive Sensor Signal Conditioning, Battery Management Systems, Industrial Process Control, Power Supply Control, Audio Signal Processing, Test and Measurement Equipment.
Automotive Sensor Signal Conditioning
The LM2904QDRQ1 is ideal for conditioning signals from temperature, pressure, and position sensors in automotive systems. Its AEC-Q100 qualification ensures reliability in harsh environments, and its wide supply range (3V to 26V) allows direct operation from a 12V battery rail. The 700 kHz bandwidth is sufficient for most sensor signals, and the low supply current (500 µA per amplifier) minimizes power consumption in always-on systems. The dual-channel configuration saves board space and cost compared to using two single op amps.
Recommended
Battery Management Systems
In battery management systems (BMS), the LM2904QDRQ1 is used for cell voltage monitoring, current sensing, and temperature measurement. Its wide supply range accommodates varying battery voltages, and its low offset voltage (2 mV) ensures accurate measurements. The automotive qualification makes it suitable for electric and hybrid vehicles. The dual op amp can be used to amplify shunt resistor voltages and condition temperature sensor outputs simultaneously, reducing component count. Its 700 kHz bandwidth is adequate for the low-frequency signals in BMS applications.
Recommended
Industrial Process Control
The LM2904QDRQ1 is well-suited for industrial process control systems, such as PLCs and motor drives, where it conditions signals from sensors and actuators. Its wide supply voltage range (3V to 26V) allows operation from 24V industrial supplies, and its temperature range of -40°C to +125°C covers harsh industrial environments. The dual op amp can be used for signal amplification and active filtering, and its low power consumption is beneficial for power-sensitive applications. The device's robustness and long-term availability make it a reliable choice for industrial designs.
Recommended
Power Supply Control
In power supply designs, the LM2904QDRQ1 is used for voltage and current sensing, error amplification, and feedback control. Its wide supply range and low offset voltage make it suitable for monitoring output voltages and currents. The 700 kHz bandwidth is sufficient for most switching power supply control loops, and the dual op amp can be used for both voltage and current feedback. The automotive qualification is beneficial for automotive power supplies, such as those in engine control units. The device's low supply current helps maintain efficiency in power-sensitive applications.
Recommended
Audio Signal Processing
The LM2904QDRQ1 can be used in audio applications such as preamplifiers, active filters, and tone control circuits. Its 700 kHz bandwidth is more than adequate for audio frequencies (20 Hz to 20 kHz), and its low distortion characteristics make it suitable for basic audio processing. The dual op amp allows stereo processing in a single package, saving space. While not as high-performance as dedicated audio op amps, it offers a cost-effective solution for automotive audio systems and industrial audio equipment. Its wide supply range allows operation from various audio supply rails.
Recommended
Test and Measurement Equipment
The LM2904QDRQ1 is used in test and measurement equipment for signal conditioning, amplification, and filtering. Its low offset voltage and bias current ensure accurate measurements, and its wide supply range allows operation from various power sources. The dual op amp can be used for differential amplification or to process multiple channels. The device's temperature stability and long-term reliability make it suitable for bench instruments and data acquisition systems. Its 700 kHz bandwidth is adequate for many measurement applications, and its low cost makes it attractive for high-volume test equipment.
Recommended
Recommended Products Summary
Engineering reference data for LM2904QDRQ1 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | LM2904DR | LM2904BIDR | LM358DR | LM2904DT |
|---|---|---|---|---|---|
| Package | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | STMicroelectronics |
| Supply Voltage Range | 3V to 26V | 3V to 26V | 3V to 26V | 3V to 32V | 3V to 32V |
| Gain Bandwidth Product | 700 kHz | 700 kHz | 700 kHz | 700 kHz | 1.1 MHz |
| Supply Current (per Amp) | 500 µA | 500 µA | 500 µA | 500 µA | 700 µA |
| Input Offset Voltage (typ) | 2 mV | 2 mV | 0.5 mV | 2 mV | 2 mV |
| Automotive Grade | Yes (AEC-Q100) | No | No | No | No |
| Operating Temperature Range | -40°C to +125°C | -40°C to +125°C | -40°C to +125°C | 0°C to +70°C | -40°C to +125°C |
Key Differentiators
- Automotive AEC-Q100 qualification (vs LM2904DR)
- Wide supply voltage range (vs LM358DR)
- Lower supply current (vs LM2904DT)
Design Notes
Decouple the power supply pins with a 0.1 µF ceramic capacitor placed as close to the VCC+ and VCC- pins as possible. For noisy environments, add a 10 µF electrolytic capacitor in parallel. The LM2904QDRQ1 can operate from a single 3V to 26V supply or dual supplies. Ensure the supply voltage does not exceed the absolute maximum rating of 32V to prevent damage.
For optimal performance, place the input and output components close to the op amp to minimize parasitic capacitance and inductance. Use a ground plane to reduce noise and provide a low-impedance return path. Keep the input traces short and shielded if the source impedance is high. The 8-SOIC package has a thermal pad that can be soldered to a copper pour for improved heat dissipation, though power dissipation is typically low.
Avoid operating the inputs beyond the common-mode input voltage range (0V to VCC-1.5V) as this can cause output phase reversal. Use input resistors to limit current if the input voltage can exceed the supply rails. Also, be aware that the output is not rail-to-rail; it can swing close to the rails but not exactly to them. For single-supply operation, ensure the input signals are biased within the common-mode range.
Compliance Information
AEC-Q100 qualified per TI product page. RoHS compliant per distributor data.
