LM2904QPWRG4Q1 - 26V Dual Op Amp | Texas Instruments
N.º da peça: LM2904QPWRG4Q1 ✓ AtivoLM2904QPWRG4Q1 Visão geral
An operational amplifier is a high-gain, frequency-compensated analog building block used to amplify sensor signals, control feedback loops, buffer voltage references, and perform general signal conditioning. The LM2904 belongs to the dual operational-amplifier hierarchy and combines low supply-current consumption with a wide common-mode input range that includes ground, making it suitable for single-supply systems operating near the lower rail.
The dual configuration provides two amplifiers in one package, reducing board area when a design needs matched general-purpose stages. Key characteristics include a 700 kHz gain-bandwidth product, a 0.3 V/µs slew rate, and a typical low supply-current drain of 0.7 mA per amplifier. Its AEC-Q100 qualification supports automotive-grade applications where temperature robustness and production quality requirements are important.
Internally, the device contains two independent, high-gain, frequency-compensated amplifiers. Frequency compensation allows operation without external compensation, while the ground-referenced common-mode capability is valuable for sensing small signals produced by sensors, resistive dividers, and single-supply analog circuits. The 26 V maximum rating also provides headroom for industrial and automotive supply environments.
Typical uses include low-side current sensing, sensor-signal conditioning, actuator feedback, automotive interface electronics, and general dual-amplifier signal conditioning. Because both channels are independent, one package can support two related functions, such as signal amplification and an active filter, without requiring separate single amplifier packages.
Designers should maintain input and output voltage limits, account for input common-mode range, and provide stable feedback-network layouts around the device. Decoupling capacitors should be placed close to the supply pins, while sensitive input and feedback nodes should be kept away from switching-current paths. The automotive qualification does not replace application-level validation of transient immunity, noise, and thermal performance.
This page organizes the device specifications, qualified family information, package details, practical design guidance, and qualified same-footprint alternatives into an engineering-focused selection resource for analog and automotive power-management designs.
Alternativas drop-in para LM2904QPWRG4Q1 — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com LM2904QPWRG4Q1 (mesmo formato e footprint) — diferindo em Amplifier Type, Architecture, Package, Slew Rate.
LM2904PWRG3
✅ Drop-InConsulte o preço
Ver ficha técnica →LM2904QPWRQ1
✅ Drop-InConsulte o preço
Ver ficha técnica →LM2904VQPWRQ1
✅ Drop-InConsulte o preço
Ver ficha técnica →LM2904QPWRG4Q1 Classificações máximas e características elétricas
| Amplifier Type | General Purpose |
| Number of Circuits | 2 circuits |
| Architecture | Dual, independent operational amplifier |
| Maximum Supply Voltage | 26 V |
| Gain-Bandwidth Product | 700 kHz |
| Slew Rate | 0.3 V/µs |
| Supply Current Drain | 0.7 mA typical per amplifier |
| Common-Mode Input Voltage Range | Includes ground |
| Automotive Qualification | AEC-Q100 qualified |
| Faixa de temperatura de operação | -40 °C to +125 °C |
| Encapsulamento | 8-pin TSSOP (PW) |
| Package Width | 4.40 mm |
| Tipo de montagem | Surface Mount |
| Shipping Package | Tape and Reel (TR) |
| Standard Pack Quantity | 2000 pieces |
Configuração de pinos do LM2904QPWRG4Q1
| Pino 1 | OUTA — Output of amplifier A |
| Pino 2 | INA- — Inverting input of amplifier A |
| Pino 3 | INA+ — Noninverting input of amplifier A |
| Pino 4 | V- — Negative supply connection |
| Pino 5 | INB+ — Noninverting input of amplifier B |
| Pino 6 | INB- — Inverting input of amplifier B |
| Pino 7 | OUTB — Output of amplifier B |
| Pino 8 | V+ — Positive supply connection |
Aplicações típicas
LM2904QPWRG4Q1 é adequado para 6 aplicaçãos: Automotive Sensor Signal Conditioning, Low-Side Current Sensing, Active Filtering and Feedback Control, Actuator Feedback Interface, Battery and Power-System Monitoring, Interface and Level Conditioning.
Automotive Sensor Signal Conditioning
The LM2904QPWRG4Q1 fits automotive sensor-conditioning stages that require low-noise amplification close to the ground rail. Its common-mode input range includes ground, while the 0.7 mA typical supply-current drain per amplifier helps control system loading. The two independent channels can amplify or buffer related sensor signals in one 8-pin TSSOP. Automotive qualification to AEC-Q100 supports its use in electronic-control units, provided the complete circuit also satisfies transient, electromagnetic-interference, and temperature-system requirements.
Recomendado
Low-Side Current Sensing
The LM2904QPWRG4Q1 can amplify the small voltage generated by a low-side current-shunt resistor in an automotive or industrial power path. The ground-inclusive common-mode range supports measurements near the lower supply rail, and the 700 kHz gain-bandwidth product supports signal bandwidth beyond static DC measurements. Its 0.3 V/µs slew rate also provides useful slew capability. The shunt, filtering network, amplifier gain, output range, and common-mode margin must be evaluated together at the highest operating temperature.
Recomendado
Active Filtering and Feedback Control
For active filters and analog feedback loops, the LM2904QPWRG4Q1 provides two independent, frequency-compensated amplifiers in a compact 8-pin TSSOP. The 700 kHz gain-bandwidth product and 0.3 V/µs slew rate make it practical for moderate-bandwidth control and conditioning stages rather than high-speed precision signal chains. Both channels can form a second-order filter or implement gain and filtering functions in one package. Stability should be confirmed using the actual noise gain, external capacitance, load, and supply conditions used in the final circuit.
Recomendado
Actuator Feedback Interface
The LM2904QPWRG4Q1 is suitable for conditioning actuator-position or drive-feedback signals in automotive and industrial control systems. A 26 V maximum supply rating provides useful tolerance for protected supply rails, while AEC-Q100 qualification supports automotive manufacturing requirements. The device can amplify a feedback divider or resistive transducer and provide a buffered reference for a controller. Ensure the selected channel remains within its input common-mode range and that the output swing reaches the controller limits over the full -40 °C to +125 °C operating range.
Recomendado
Battery and Power-System Monitoring
The LM2904QPWRG4Q1 can monitor low-level voltage signals in battery-management or industrial power-control circuits where low supply-current consumption is beneficial. Its typical 0.7 mA drain per amplifier reduces demand on constrained rails, and the ground-inclusive input range supports measurements near zero volts. Two channels can process a sensed battery or supply rail and a related threshold signal. Protection, transient filtering, and accurate reference components remain necessary because the operational amplifier does not replace input surge protection or precision measurement circuitry.
Recomendado
Interface and Level Conditioning
The LM2904QPWRG4Q1 can buffer or amplify logic-level and transducer signals in mixed-signal automotive electronics. Its 700 kHz gain-bandwidth product accommodates many control and communications interfaces while its dual-channel construction reduces component count. The two amplifiers may implement an independent receive and reference path, or one may provide gain while the other buffers a threshold or level-shift node. Validate source impedance, capacitive loading, output drive, and stability. For slow, open-collector or differential interfaces, a dedicated interface IC may provide a more suitable electrical solution.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para LM2904QPWRG4Q1 — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | LM2904PWR | LM2904QPWRQ1 | LM2904VQPWRQ1 |
|---|---|---|---|---|
| Package | 8-TSSOP (PW) | 8-TSSOP (PW) | 8-TSSOP (PW) | 8-TSSOP (PW) |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Amplifier Configuration | Dual, independent channels | Dual general-purpose amplifier | Dual LM2904-Q1 amplifier | Dual LM2904-Q1 amplifier |
| Maximum Supply Voltage | 26 V | 26 V | 26 V | 26 V |
| Automotive Qualification | AEC-Q100 qualified | Not identified as automotive qualified | LM2904-Q1 family | LM2904-Q1 family |
Principais diferenciais
- Automotive qualification without changing the basic LM2904 performance class (vs LM2904PWR)
- Direct same-family ordering option (vs LM2904QPWRQ1)
- Dual-channel integration reduces package count (vs LM2904VQPWRQ1)
Notas de projeto
Place the supply bypass capacitor directly between the V+ and V- pins and the ground reference plane. Keep the input, feedback, and output routing short, especially on the noninverting inputs, because parasitic capacitance combined with high source resistance can alter gain and stability. Route the two channels separately where one channel carries a fast or high-current signal and the other handles a sensitive sensor node.
Check the output-voltage headroom and input common-mode range over the full -40 °C to +125 °C operating range. The common-mode range includes ground, which supports near-rail sensing, but it does not remove all common-mode restrictions. For gain stages near the positive rail, add headroom by reducing the target output swing and account for the amplifier's offset voltage when resolving very small sensor signals.
Do not assume that every LM2904 ordering code satisfies the same automotive qualification requirement. The LM2904QPWRG4Q1 carries the AEC-Q100-oriented G4Q1 ordering designation, while LM2904PWR is a commercial 8-pin TSSOP option. Before substitution, compare the device-ordering table, temperature grade, qualification status, and electrical limits in the manufacturer datasheet, then review the revised component against the schematic and layout.
Informações de conformidade
Texas Instruments states that the LM2904-Q1 family is qualified in accordance with AEC-Q100 specifications. RoHS, REACH, lead-free, halogen-free, and conflict-minerals declarations require confirmation from the current manufacturer product or compliance documentation.