LM2904QDRQ1 - Dual 26V 700kHz Op Amp AEC-Q100 | TI
MPN: LM2904QDRQ1 β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0.35 | $0.35 |
| 10 | $0.32 | $3.20 |
| 100 | $0.26 | $26.00 |
| 500 | $0.24 | $120.00 |
| 1,000 | $0.22 | $220.00 |
Drop-in alternatives for LM2904QDRQ1 β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
LM2904BQDRQ1
β Drop-Inπ Reference alternative (not in catalog)
LM358QDRQ1
β Drop-Inβ In Stock
$0.18 / Unit
View Datasheet βLM2904QDR
β Drop-Inπ Reference alternative (not in catalog)
LM2904VQDR
β Drop-Inπ Reference alternative (not in catalog)
NCV2904DR2G
β Drop-Inπ Reference alternative (not in catalog)
LM2904DR2G
β Drop-Inπ Reference alternative (not in catalog)
LM2904QDRQ1 Maximum Ratings & Electrical Characteristics
| Amplifier Channels | 2 |
| Gain-Bandwidth Product | 700 kHz |
| Supply Voltage Range (Single) | 3 V to 26 V |
| Supply Voltage Range (Dual) | Β±1.5 V to Β±13 V |
| Slew Rate | 0.3 V/us |
| Supply Current Per Amplifier | 500 uA |
| Input Offset Voltage (Typ / Max) | 2 mV / 7 mV |
| Input Bias Current (Typ) | 20 nA |
| Input Common-Mode Range | Includes ground (V-) |
| Output Swing | Swings close to V- (not rail-to-rail) |
| ESD Protection (HBM) | Exceeds 500 V (MIL-STD-883 Method 3015) |
| ESD Protection (MM) | Exceeds 200 V (200 pF) |
| Operating Temperature | -40C to +125C |
| Package | 8-SOIC (D) |
| Mounting Type | Surface Mount |
| Automotive Qualification | AEC-Q100 Qualified |
| Output Short-Circuit Protection | Yes |
LM2904QDRQ1 Pin Configuration
| Pin 1 | OUT1 β Amplifier 1 output |
| Pin 2 | IN1- β Amplifier 1 inverting input |
| Pin 3 | IN1+ β Amplifier 1 non-inverting input |
| Pin 4 | GND / V- β Ground or negative supply |
| Pin 5 | IN2+ β Amplifier 2 non-inverting input |
| Pin 6 | IN2- β Amplifier 2 inverting input |
| Pin 7 | OUT2 β Amplifier 2 output |
| Pin 8 | VCC / V+ β Positive supply, 3V to 26V |
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, Low-Side Current Sensing, Active Filters, DC Motor Control Loops, Battery Management Front-Ends, Comparators and Level Detection.
Automotive Sensor Signal Conditioning
The LM2904QDRQ1 fits automotive sensor front-ends because its input common-mode range includes ground and its 26V supply rating tolerates 12V battery transients. Per the TI datasheet, the AEC-Q100 qualification and -40C to +125C range cover underhood and body electronics environments. Used as a non-inverting amplifier after temperature, pressure, or position sensors, each of the two 700 kHz channels conditions one signal; the 2 mV typical offset limits DC error, and the ground-sensing output interfaces directly to MCU ADC inputs in single-supply 5V systems.
Recommended
Low-Side Current Sensing
The ground-inclusive common-mode input range makes the LM2904QDRQ1 well suited for low-side current sensing with a shunt resistor. Per the TI datasheet, the amplifier input can measure the small shunt voltage at ground potential, amplified by the second channel with a gain-set resistor network to drive an ADC or comparator. With a 2 mV typical input offset, the measurable current floor is set by offset divided by shunt value; the 700 kHz GBW supports bandwidths adequate for motor and load current monitoring in 12V automotive rails.
Recommended
Active Filters
With a 700 kHz gain-bandwidth product and internal frequency compensation, the LM2904QDRQ1 implements Sallen-Key and multiple-feedback active filters for frequencies up to the tens-of-kilohertz range with minimal Q degradation. Per the TI datasheet, the bipolar input stage and 0.3 V/us slew rate handle anti-aliasing and noise-filtering duties ahead of ADCs in audio-band and control-loop applications. The dual channels allow a two-stage filter in one SOIC-8, and the ground-sensing output avoids the negative-supply complexity of classic filter topologies.
Recommended
DC Motor Control Loops
In DC motor control, the LM2904QDRQ1 serves as an error amplifier for PWM regulation loops and as a buffer for tachometer feedback. The 26V supply rating allows direct connection to 12V automotive rails, and the output short-circuit protection adds robustness in harsh electrical environments, per the TI datasheet. The 500 uA per-amplifier supply current keeps quiescent drain low in ignition-off states, while the 700 kHz GBW provides sufficient loop bandwidth for stable proportional-integral compensation of low-cost brushed motor drives.
Recommended
Battery Management Front-Ends
The LM2904QDRQ1 conditions cell-voltage and current signals in 12V lead-acid and low-cell-count lithium monitoring circuits. Per the TI datasheet, the 3V minimum supply supports operation directly from a single cell stack segment, while the 26V maximum tolerates charging transients. One channel can amplify a shunt-based charge/discharge current signal and the second can buffer a divided battery voltage into an ADC. The AEC-Q100 qualification addresses the automotive BMS environment, and low 500 uA per-channel drain limits standby battery depletion.
Recommended
Comparators and Level Detection
Operating open-loop, each LM2904QDRQ1 channel functions as a low-speed comparator for under/over-voltage detection and window monitors in automotive modules. The ground-including common-mode range permits ground-referenced threshold detection on a single 5V or 12V supply, per the TI datasheet. The 700 kHz GBW limits response speed, so it suits DC-level supervision (battery undervoltage, sensor fault lines) rather than fast edge detection. Output saturation near the negative rail gives a clean logic-compatible low level for MCU GPIO inputs.
Recommended
Recommended Products Summary
Engineering reference data for LM2904QDRQ1 β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | LM2904BQDRQ1 | LM358QDRQ1 | NCV2904DR2G |
|---|---|---|---|---|
| Package | 8-SOIC (D) | 8-SOIC (D) - same | 8-SOIC (D) - same | 8-SOIC - same footprint |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | onsemi |
| Maximum Supply Voltage | 26 V | 36 V | 32 V | 26 V |
| Gain-Bandwidth Product | 700 kHz | 700 kHz | 700 kHz | 700 kHz |
| Input Offset Voltage (Max) | 7 mV | 3 mV (improved) | 7 mV | 7 mV |
| AEC-Q100 Qualified | Yes | Yes | Yes | Yes |
| Operating Temperature | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +125C |
| Supply Current per Amplifier | 500 uA | 500 uA | 500 uA | 500 uA |
Key Differentiators
- Higher 36V supply rating with improved precision (vs LM2904BQDRQ1)
- Automotive AEC-Q100 qualification at commodity pricing (vs LM2904QDR)
- Ground-inclusive single-supply input range (vs Generic rail-to-rail-input alternatives)
Design Notes
Place a 0.1 uF ceramic decoupling capacitor directly across pins 8 (VCC) and 4 (GND), within 2-3 mm of the package. Because the LM2904-Q1 is a bipolar dual op amp, both channels share the supply; a second channel's output transient can couple into the first channel through shared supply impedance. For designs driving moderate loads, add a 10 uF bulk capacitor on the local supply rail. Keep high-impedance input traces (pins 2, 3, 5, 6) short and guarded against leakage.
The input common-mode range extends to V- but only to approximately VCC-1.5V on the high side; exceeding it causes phase reversal of the output. Keep input signals below VCC-1.5V under all conditions including transients. The output is not rail-to-rail - it saturates roughly 20 mV above V- but can only reach VCC-1.5V when sourcing load current. Design gain stages so expected output swings stay within these limits to avoid clipping that looks like signal distortion.
With a 700 kHz GBW, a unity-gain buffer has roughly 700 kHz of closed-loop bandwidth; a gain-of-10 stage drops to about 70 kHz. Plan filter corner frequencies and settle times accordingly. The 0.3 V/us slew rate limits large-signal handling - a 10 Vpp sine needs at least 4.8 kHz to slew undistorted. For capacitive loads above roughly 50 pF, add an output isolation resistor (50-100 ohm) to prevent instability, consistent with guidance in TI's LM2904 application section.
Compliance Information
AEC-Q100 qualified for automotive applications per TI product page. ESD protection exceeds 500V per MIL-STD-883 Method 3015 and 200V machine model. Customer-specific configuration control supported.
