LM2904AVQPWRQ1 - 26V, 700kHz Automotive Dual Op Amp | TI
MPN: LM2904AVQPWRQ1 ✓ ActiveLM2904AVQPWRQ1 Overview
An operational amplifier is an analog IC that provides high open-loop gain and signal amplification for sensors, control loops, filters, and signal-conditioning circuits. The LM2904-Q1 family belongs to the operational amplifier hierarchy, where each amplifier section provides voltage amplification, impedance buffering, and feedback-based signal conditioning within a wider analog or mixed-signal system.
Key characteristics include two amplifier circuits, a 700 kHz gain-bandwidth product, a 0.3 V/µs slew rate, a typical input offset voltage of 3 mV, and typical input bias current of 20 nA. The operating temperature range extends from -40°C to +125°C, supporting industrial and automotive environments where temperature and qualification requirements exceed those of ordinary general-purpose amplifiers.
The internally compensated architecture simplifies implementation of standard inverting, non-inverting, summing, and feedback amplifier circuits. A typical supply current is 500 µA per channel, while output current capability reaches 40 mA per channel. These characteristics make the device suitable for low-power analog signal conditioning where a 3 V minimum supply is required and the circuit must tolerate supply voltages up to 26 V.
Typical uses include sensor interfaces, actuator drivers, motor-control feedback networks, battery-powered instrumentation, industrial control loops, and automotive signal-conditioning modules. The wide supply range allows operation from single or split supplies, although the differential voltage between the supply rails must remain within the device limits.
Designers should verify output swing, input common-mode range, stability, and load capability across the complete supply and temperature range. Decoupling capacitors should be placed close to the supply pins, while feedback components and sensitive input routes should be kept away from switching nodes to reduce coupling and maintain low offset performance.
Drop-in alternatives for LM2904AVQPWRQ1 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with LM2904AVQPWRQ1 (same form factor and footprint) — differing in Amplifier Type, Automotive Qualification, Compensation, RoHS Status.
LM2904AVQPWR
✅ Drop-In ⚠️ Specs UnverifiedContact for price
View Datasheet →LM2904AQPWRQ1
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
LM2904AQPWRG4Q1
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
LM2904BVPWRQ1
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
LM2904BAVPWRQ1
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
LM2904AVQPWRQ1 Maximum Ratings & Electrical Characteristics
| Amplifier Type | General-purpose operational amplifier |
| Number of Channels | 2 channels |
| Automotive Qualification | AEC-Q100 qualified |
| Maximum Supply Voltage | 26 V |
| Minimum Supply Voltage | 3 V |
| Gain-Bandwidth Product | 700 kHz |
| Slew Rate | 0.3 V/µs |
| Input Offset Voltage | 3 mV typical |
| Input Bias Current | 20 nA typical |
| Supply Current | 500 µA per channel typical |
| Output Current per Channel | 40 mA |
| Operating Temperature Range | -40°C to +125°C |
| Package | 8-pin TSSOP (PW) |
| Mounting Type | Surface mount |
| Compensation | Internally frequency compensated |
| RoHS Status | RoHS-compliant |
| Lead-Free Status | Lead-free |
| Supply Configuration | Single or split supply |
| Product Qualification | Automotive-grade |
LM2904AVQPWRQ1 8-pin tssop (pw) Pin Configuration Guide
Pin configuration for LM2904AVQPWRQ1 (8-pin tssop (pw) package). This analog component features input, output, and power supply pins. Refer to the manufacturer datasheet for offset null, compensation, and enable pin configurations. Ideal for signal conditioning and amplifier circuits.
No detailed pinout data available for LM2904AVQPWRQ1.
Refer to the datasheet for full pin configuration.
Typical Applications
LM2904AVQPWRQ1 is suitable for 6 applications: Automotive Sensor Signal Conditioning, Industrial Control-Loop Amplification, Battery-Powered Instrumentation, Active Filtering and Signal Shaping, Motor and Actuator Feedback, Power-Supply Feedback and Monitoring.
Automotive Sensor Signal Conditioning
The LM2904AVQPWRQ1 fits automotive sensor-conditioning circuits because it combines two independent amplifiers, a 3 V to 26 V supply range, and AEC-Q100 qualification in an 8-pin TSSOP package. Each section can provide gain or active filtering for a resistive sensor such as a temperature, pressure, or position transducer. Its 700 kHz gain-bandwidth product supports low-bandwidth automotive signals, while 20 nA typical input bias current limits loading on high-impedance sensor networks. The 0.3 V/µs slew rate also allows the amplifier stage to preserve reasonable pulse fidelity. Engineers should verify the input common-mode range and output swing throughout the vehicle's full -40°C to +125°C operating environment.
Recommended
Industrial Control-Loop Amplification
The LM2904AVQPWRQ1 is suitable for error-amplifier and controller-feedback stages in industrial equipment operating from 3 V to 26 V. Its two channels can implement separate summing or differential functions, reducing the need for multiple amplifier packages when board space is constrained. The 700 kHz gain-bandwidth product is adequate for many low-bandwidth control loops, while internal frequency compensation simplifies stable feedback implementation. For actuator or power-converter control, engineers should calculate loop gain and phase margin and verify output-current capability against the load. The -40°C to +125°C operating range supports demanding industrial environments, although AEC-Q100 qualification does not replace application-specific safety analysis.
Recommended
Battery-Powered Instrumentation
A low-power instrumentation front end can use the LM2904AVQPWRQ1's typical 500 µA supply current per channel to conserve battery capacity while processing analog sensor signals. The device operates from a 3 V minimum supply, making it suitable for compact portable equipment, and its 20 nA typical input bias current is useful with high-impedance sources. Two independent channels can handle excitation, sensing, or active filtering in one package. The 700 kHz gain-bandwidth product is sufficient for low-frequency measurements rather than wideband instrumentation. Designers should confirm input offset across temperature, include adequate bypass capacitance, and account for the amplifier's quiescent current when calculating the complete sensor-node power budget.
Recommended
Active Filtering and Signal Shaping
The LM2904AVQPWRQ1 can implement active low-pass, high-pass, or band-pass networks when a design calls for gain and filtering around audio-band or lower-frequency signals. Its two channels allow independent stages, such as an anti-alias filter followed by a gain or level-shifting stage, within one 8-pin TSSOP package. A 700 kHz gain-bandwidth product and 0.3 V/µs slew rate provide useful dynamic range for moderate-frequency precision conditioning. Component tolerances will often dominate filter accuracy, so use suitable resistor and capacitor grades and verify gain-bandwidth effects around the operating frequency. Decoupling capacitors and short feedback paths are important for stable operation and reduced noise pickup.
Recommended
Motor and Actuator Feedback
The dual LM2904AVQPWRQ1 can monitor a motor or actuator plant by amplifying current-sense or position-feedback signals in one package. The first channel may condition a low-level feedback voltage, while the second supports an error amplifier or driver-control comparison. Its 26 V maximum supply rating provides headroom for systems sharing a protected intermediate rail, and the 40 mA per-channel output rating is suitable for many feedback-network loads. For motor environments, keep sensitive input traces away from switching currents and provide local supply bypassing. Confirm the common-mode range at every sensed voltage, check output swing against the control signal range, and use the -40°C to +125°C limits for worst-case design calculations.
Recommended
Power-Supply Feedback and Monitoring
The LM2904AVQPWRQ1 can amplify the error voltage of a linear power-supply feedback loop or monitor a divided output rail. Its 3 V to 26 V operating range and two-channel architecture permit separate output and input monitoring functions in a compact design. The 700 kHz gain-bandwidth product is suitable for low-frequency regulation loops, and the 500 µA typical supply current per channel helps limit auxiliary monitoring overhead. Stable operation depends on feedback-network design, output loading, and the power stage rather than the nominal gain-bandwidth value alone. Validate phase margin, output-current margin, startup behavior, and input common-mode limits. Automotive power systems should also verify qualification and transient requirements for the complete design.
Recommended
Recommended Products Summary
Engineering reference data for LM2904AVQPWRQ1 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | LM2904AVQPWR | LM2904AQPWRQ1 | LM2904AQPWRG4Q1 | LM2904BVPWRQ1 | LM2904BAVPWRQ1 |
|---|---|---|---|---|---|---|
| Package | 8-pin TSSOP (PW) | 8-pin TSSOP (PW) | 8-pin TSSOP (PW) | 8-pin TSSOP (PW) | 8-pin TSSOP (PW) | 8-pin TSSOP (PW) |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Amplifier Configuration | Dual operational amplifier | Dual operational amplifier | Dual operational amplifier | Dual operational amplifier | Dual operational amplifier | Dual operational amplifier |
| Maximum Supply Voltage | 26 V | 26 V | 26 V | 26 V | 26 V | 26 V |
| Minimum Supply Voltage | 3 V | 3 V | 3 V | 3 V | 3 V | 3 V |
| Gain-Bandwidth Product | 700 kHz | 700 kHz | 700 kHz | 700 kHz | 700 kHz | 700 kHz |
| Slew Rate | 0.3 V/µs | 0.3 V/µs | 0.3 V/µs | 0.3 V/µs | 0.3 V/µs | 0.3 V/µs |
| Input Offset Voltage | 3 mV typical | 3 mV typical | 3 mV typical | 3 mV typical | 3 mV typical | 3 mV typical |
| Input Bias Current | 20 nA typical | 20 nA typical | 20 nA typical | 20 nA typical | 20 nA typical | 20 nA typical |
| Automotive Qualification | AEC-Q100 qualified | Not the Q1 automotive ordering code | Q1 automotive ordering code | Q1 automotive ordering code | Q1 automotive ordering code | Q1 automotive ordering code |
| Operating Temperature Range | -40°C to +125°C | -40°C to +125°C | -40°C to +125°C | -40°C to +125°C | -40°C to +125°C | -40°C to +125°C |
Key Differentiators
- Automotive qualification in a compact dual TSSOP package (vs LM2904AVQPWR)
- Two independent amplifiers reduce package count (vs LM2903DR)
- Wide supply range with low typical channel current (vs LM2902DR)
- Automotive temperature capability (vs LM2904BAVPWRQ1)
Design Notes
Place the supply bypass capacitor directly between each amplifier's supply pin and ground reference. The dual device requires a local supply path that keeps both channels electrically close to the same low-impedance rail node; long traces between channel pins can impair transient response. Keep the 26 V absolute operating limit in view during automotive load-dump and supply-transient analysis, and verify that all feedback-generated output voltages remain inside the amplifier's output-swing limits.
Route each inverting and non-inverting input with short, quiet traces, especially when the source impedance is high. Keep these routes away from power-switching nodes, motor phases, relay contacts, and the unused amplifier's output. Connect the bypass network near the package rather than at the connector or power-supply output. These layout practices reduce common-mode pickup and parasitic feedback that can degrade the typical 3 mV offset performance and 700 kHz gain-bandwidth capability.
Do not assume the common-mode input range covers the complete 3 V to 26 V supply interval. Check the non-inverting input voltage against the device's common-mode limits at the minimum and maximum operating supply, especially when sensing near the lower rail. Also confirm that the load does not exceed the 40 mA per-channel output rating and that split-supply operation keeps the total rail-to-rail voltage within the device limit. Thermal analysis should include ambient temperature over the full -40°C to +125°C range.
Select feedback resistors and capacitors to keep the closed-loop bandwidth comfortably below the 700 kHz gain-bandwidth product, with additional margin for the 0.3 V/µs slew-rate requirement. Stable feedback ratios, physically small loops, and grounded unused inputs reduce oscillation and offset risk. For low-level sensor signals, use guarding or a ground plane and avoid placing high-current return paths beneath the input traces. Validate the completed board for oscillation, settling, and channel-to-channel interaction.
Compliance Information
Texas Instruments states that the LM2904-Q1 family is qualified to AEC-Q100 specifications. RoHS-compliant and lead-free status is stated by an authorized component listing; REACH, halogen-free, and conflict-minerals status are unknown.