LM2904AVQPWR - Dual 30V 700kHz Op Amp | Texas Instruments
MPN： LM2904AVQPWR ✓ 啟用中LM2904AVQPWR 概覽
An operational amplifier is an analog building block that amplifies the voltage difference between its differential input while using negative feedback to set closed-loop gain and bandwidth. The LM2904 belongs to the broader hierarchy of linear amplifiers, analog signal-chain ICs, and semiconductor components. It is internally compensated, which simplifies implementation by removing the need for an external compensation capacitor in standard closed-loop configurations.
Key characteristics include low supply-current drain, low input bias and offset currents, and an input common-mode range that extends close to ground for single-supply applications. The typical supply-current consumption is 0.7 mA per amplifier. Its broad supply range and temperature rating support industrial control, automotive, instrumentation, and test-equipment designs where the amplifier must operate across changing supply and ambient conditions.
The LM2904 architecture uses two independent, high-gain, frequency-compensated amplifiers in one package. Internal compensation establishes the dominant pole and makes unity-gain operation practical without external compensation components. The 700 kHz gain-bandwidth product supports moderate-frequency signal conditioning rather than high-speed data acquisition, so layout should minimize feedback-loop area and keep sensitive input nodes away from supply and output routing.
Typical uses include sensor-amplifier front ends, low-frequency active filters, comparator-style threshold circuits with saturation recovery, audio preamplifier stages, and programmable control interfaces. For automotive and industrial systems, the wide operating-temperature range and wide supply tolerance are especially useful, while the low input bias current helps preserve sensor accuracy.
When designing around the LM2904AVQPWR, verify the input common-mode range against the actual signal and supply levels, particularly near the positive rail. Decoupling capacitors should be placed directly across the supply pins, and unused amplifier inputs must be biased rather than left floating. Avoid relying on the device for millivolt-level precision tasks without checking offset, drift, and bias-current contributions for the complete signal chain.
This page consolidates package details, verified distributor pricing evidence, drop-in alternatives, and application-oriented design guidance for engineers evaluating the LM2904AVQPWR. It also distinguishes supply-voltage, temperature, channel-count, and bandwidth trade-offs among pin-compatible LM2904-family options.
直接替換替代品，適用於 LM2904AVQPWR — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： LM2904AVQPWR （相同外形與佔位） — 差異在於 Amplifier Type, Automotive Qualification, Compensation, RoHS Status.
LM2904AVQPWRQ1
✅ 直接替換聯絡詢價
查看資料表 →LM2904AQPT
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
LM2904AYPT
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
LM2904APT
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
LM2904AVQPWR 最大額定值與電氣特性
| Number of Amplifiers | 2 channels |
| Amplifier Type | Dual general-purpose operational amplifier |
| Maximum Total Supply Voltage | 30 V |
| Single-Supply Operating Range | Up to +13 V |
| Gain-Bandwidth Product | 700 kHz |
| Typical Supply Current per Amplifier | 0.7 mA |
| 工作溫度範圍 | -40°C to +125°C |
| 封裝 | 8-pin TSSOP (PW) |
| Package Body Width | 4.40 mm |
| 安裝類型 | Surface Mount |
| Compensation | Internal frequency compensation |
| Common-Mode Input Range | Includes ground |
| Automotive Qualification | Automotive-grade variant available as LM2904AVQPWRQ1 |
| MSL 等級 | MSL 1 - 260°C unlimited floor life |
| RoHS 狀態 | Compliant |
LM2904AVQPWR 4.40 mm 腳位配置指南
LM2904AVQPWR（4.40 mm 封裝）的腳位配置。 此類比元件具有輸入、輸出與電源腳位。偏移歸零、補償與致能腳位配置請參閱製造商資料表。適用於訊號調理與放大器電路。
無詳細腳位定義資料： LM2904AVQPWR.
請參閱 資料表 以查看完整腳位配置。
典型應用
LM2904AVQPWR 適用於 6 應用s: Industrial Sensor Signal Conditioning, Automotive Control Interface, Low-Frequency Active Filtering, Transducer Bridge Amplification, Audio Preamplifier Stage, Test and Measurement Equipment.
Industrial Sensor Signal Conditioning
The LM2904AVQPWR fits resistive-sensor front ends that require two independent analog channels within a single 8-pin TSSOP package. Its low input bias and offset currents help reduce measurement error, while the common-mode input range includes ground for signals referenced to the lower supply rail. The 30 V maximum supply rating also supports 24 V industrial systems. In a typical conditioning stage, one amplifier amplifies the sensor output and the second provides gain or an active-filter function. Keep the high-impedance input traces short, bias unused inputs, and place supply-decoupling capacitors adjacent to the device.
推薦
Automotive Control Interface
The LM2904AVQPWR is appropriate for low-frequency automotive control and conditioning circuits that need a wide supply range and operation over -40°C to 125°C. Its dual-channel arrangement supports independent error-amplifier and buffer functions, while the 700 kHz gain-bandwidth product is sufficient for slow control loops rather than high-speed communication. The automotive-qualified LM2904AVQPWRQ1 is the preferred option when AEC-Q100 qualification and automotive traceability are mandatory. Protect external inputs against transients and keep sensitive analog routing separated from actuator drive lines.
推薦
Low-Frequency Active Filtering
The LM2904AVQPWR can implement first- and second-order active filters for audio, vibration, and process-control signals because each channel provides internally compensated gain at approximately 700 kHz. One amplifier may form an inverting stage while the other supplies the required feedback or buffering. Component tolerances and the amplifier's finite gain-bandwidth product determine the achieved cutoff accuracy and phase response. Validate stability in the physical layout, especially when capacitor values create high closed-loop gain near the gain-bandwidth limit.
推薦
Transducer Bridge Amplification
The dual LM2904AVQPWR is useful in bridge-amplifier and instrumentation designs where two amplifiers must operate over a wide voltage range and temperature interval. Its low supply-current drain of approximately 0.7 mA per amplifier reduces power consumption in portable measurement equipment, while the common-mode input range extending toward ground supports bridge returns near 0 V. Resistor-network matching determines the common-mode rejection, so use closely matched precision resistors and maintain symmetric layout. The 700 kHz bandwidth handles slow mechanical or temperature signals without requiring a high-speed amplifier.
推薦
Audio Preamplifier Stage
The LM2904AVQPWR supports cost-effective microphone and line-level preamplifier circuits because it combines two general-purpose amplifier channels in one package. The internal frequency compensation simplifies standard inverting and non-inverting gain stages, and the low supply-current drain suits battery-operated audio equipment. Gain-bandwidth limits require care: excessive closed-loop gain narrows the usable bandwidth and increases distortion risk. Set input and feedback resistors with low noise, keep the input node compact, and use stable film capacitors where the circuit depends on accurate frequency response.
推薦
Test and Measurement Equipment
The LM2904AVQPWR is useful in buffer, comparator, and programmable-reference circuits within laboratory and field test equipment. Two independent amplifiers can provide input buffering and level shifting in a single 8-pin TSSOP footprint, simplifying board space in multi-function instruments. Its broad operating-temperature range supports equipment used in uncontrolled environments, while the low supply-current draw benefits from portable instruments. Use the pin-configuration and recommended operating conditions in the manufacturer datasheet to establish safe input and output ranges for each measurement mode.
推薦
推薦產品摘要
工程參考資料，適用於 LM2904AVQPWR — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | LM2904AVQPWRQ1 | LM2904AQPT | LM2904AYPT | LM2904APT |
|---|---|---|---|---|---|
| Package | 8-TSSOP (PW) | 8-TSSOP (PW) - same | 8-TSSOP (PW) - same | 8-TSSOP (PW) - same | 8-TSSOP (PW) - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Number of Amplifiers | 2 channels | 2 channels | 2 channels | 2 channels | 2 channels |
| Maximum Total Supply Voltage | 30 V | 30 V | 30 V | 30 V | 30 V |
| Gain-Bandwidth Product | 700 kHz | 700 kHz | 700 kHz | 700 kHz | 700 kHz |
| Typical Supply Current per Amplifier | 0.7 mA | 0.7 mA | 0.7 mA | 0.7 mA | 0.7 mA |
| 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 |
| Automotive Qualification | Standard ordering option | Automotive-qualified option | Automotive-grade ordering option | Grade-specific ordering option | Standard grade ordering option |
| Internal Compensation | Yes | Yes | Yes | Yes | Yes |
| Input Common-Mode Range | Includes ground | Includes ground | Includes ground | Includes ground | Includes ground |
主要差異化特點
- Wide supply operation in a compact dual-amplifier package (對比LM2904APT)
- Automotive-qualified ordering path without a footprint change (對比LM2904AVQPWRQ1)
- Ground-referenced common-mode operation for single-supply designs (對比LM2904AYPT)
設計說明
Place the supply-decoupling capacitor directly across the amplifier's supply and ground pins, with the shortest possible trace between the capacitor and the device. A second local bypass capacitor can suppress higher-frequency supply noise. Keep the two sensitive input nodes physically separate from output and supply routing because the high open-loop gain of this amplifier family can convert small coupled signals into output errors.
Route each feedback loop as a compact loop and avoid routing the feedback trace alongside the input trace. The LM2904AVQPWR has a 700 kHz gain-bandwidth product, so stability is adequate in conventional closed-loop designs, but large capacitive loads, excessive closed-loop gain, or long feedback paths can reduce phase margin. Confirm stability with the intended load and PCB geometry before production release.
Do not leave either input of an unused amplifier floating. Bias the unused channel with a resistor network referenced to a valid common-mode voltage, and verify that its output remains within the amplifier's output-swing range. Also check the signal against both the input common-mode range and the output-swing limits because these limits differ and neither reaches the full positive supply rail.
Estimate: each channel can consume approximately 0.7 mA under the stated typical condition, so dual-channel current is about 1.4 mA before output-current contribution. At a 24 V total supply the internal dissipation from supply-current draw alone is approximately 33.6 mW, which is normally minor. Actual channel dissipation depends on output voltage, load current, and quiescent current, so evaluate the complete operating state rather than the typical quiescent value alone.
合規資訊
The LM2904AVQPWR is identified as RoHS compliant. Select the LM2904AVQPWRQ1 automotive-qualified option when AEC-Q100 qualification is required for the target application.