LM2904QDRG4 - Dual 26 V 700 kHz Op Amp | Texas Instruments
MPN： LM2904QDRG4 ✓ 啟用中LM2904QDRG4 概覽
An operational amplifier is an analog signal-conditioning IC that uses high open-loop gain and negative feedback to amplify voltage differences. The dual-amplifier configuration places two independent amplifiers in one package, making it useful within the hierarchy of op amp, dual op amp, analog IC, and integrated circuit. Common uses include sensor conditioning, voltage amplification, comparison, and control-loop stages where broad supply-voltage tolerance is valuable.
The LM2904QDRG4 is specified for single-supply operation up to 26 V and dual-supply operation at ±13 V. Its common-mode input range includes ground, which allows the device to process signals near the lower supply rail. The internally frequency-compensated architecture simplifies closed-loop design, while the 700 kHz gain-bandwidth product supports general-purpose signal paths rather than high-speed precision applications.
The two channels provide independent operation, allowing one channel to perform signal amplification while the other handles feedback, comparison, or monitoring. A 0.3 V/µs slew rate governs large-signal response, and the 0.7 mA typical supply-current drain supports low-power control designs. The 8-SOIC footprint is widely used for industrial and automotive printed-circuit boards, although engineers should verify the exact pin arrangement and exposed thermal requirements in the manufacturer datasheet.
Typical applications include automotive sensor interfaces, industrial control loops, low-level signal conditioning, actuator-driver feedback networks, and general dual-amplifier signal paths. The 26 V supply capability is particularly useful when a circuit must operate from a nominal 24 V industrial rail while retaining tolerance for transient excursions, provided the absolute maximum limits are respected.
When designing a replacement, verify the channel pinout, supply limits, common-mode range, output-swing limits, and required package dimensions before changing the PCB. Decoupling capacitors should be placed close to the supply pins, and sensitive layouts should minimize parasitic capacitance between input and output nodes to preserve stability.
This page combines manufacturer specifications, package information, same-family replacement guidance, comparison parameters, and practical circuit-design considerations. It is intended to help engineers identify an exact-footprint alternative, compare practical constraints, and design the LM2904QDRG4 into industrial or automotive control electronics.
直接替換替代品，適用於 LM2904QDRG4 — 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： LM2904QDRG4 （相同外形與佔位） — 差異在於 Slew Rate, Package, Gain-Bandwidth Product, Common-Mode Input Range, Input Offset Voltage.
LM2904DR
✅ 直接替換聯絡詢價
查看資料表 →LM2904QDRG4Q1
✅ 直接替換聯絡詢價
查看資料表 →LM2904YDT
✅ 直接替換📋 參考替代品（不在目錄中）
LM2904VDR2G
✅ 直接替換聯絡詢價
查看資料表 →LM2904QDRQ1
✅ 直接替換✗ 缺貨
$0.22 / 單位
查看資料表 →LM2904QDRG4 最大額定值與電氣特性
| Product Type | Dual general-purpose operational amplifier |
| Number of Amplifier Channels | 2 circuits |
| Maximum Total Supply Voltage | 26 V |
| Recommended Single-Supply Operation | Up to 26 V |
| Recommended Dual-Supply Operation | ±13 V |
| Gain-Bandwidth Product | 700 kHz per channel |
| Slew Rate | 0.3 V/µs |
| Typical Supply-Current Drain | 0.7 mA |
| Common-Mode Input Range | Includes ground |
| Compensation | Internally frequency compensated |
| 封裝 | 8-SOIC, 3.90 mm body width |
| Package Body Width | 3.90 mm |
| Packaging | Tape and reel |
| 安裝類型 | Surface mount |
| Application Category | Automotive and industrial control systems |
LM2904QDRG4 3.90 mm 腳位配置指南
LM2904QDRG4（3.90 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： LM2904QDRG4.
請參閱 資料表 以查看完整腳位配置。
典型應用
LM2904QDRG4 適用於 6 應用s: Automotive Sensor Signal Conditioning, Industrial Control Loop Amplification, Low-Level Voltage Amplification, Actuator Driver Feedback, Power-Supply Monitoring, General-Purpose Dual Signal Conditioning.
Automotive Sensor Signal Conditioning
The LM2904QDRG4 fits automotive sensor-conditioning stages because it provides two independent amplifiers, a 700 kHz gain-bandwidth product, and a 26 V maximum total supply in an 8-SOIC package. One channel can amplify a transducer signal while the other provides feedback, level shifting, or monitoring within a closed control loop. The 0.3 V/µs slew rate supports general-purpose signals without requiring a high-speed precision amplifier. Its common-mode input range includes ground, which helps process signals near the lower rail. Qualification, transient protection, and exact suffix requirements must be confirmed for the vehicle platform.
推薦
Industrial Control Loop Amplification
The LM2904QDRG4 is appropriate for industrial control loops operating from a nominal 24 V rail because the LM2904 family supports a 26 V total supply. Two independent channels can amplify a sensor error signal and condition a feedback or monitor signal without using two separate packages. The 700 kHz gain-bandwidth product is suitable for general control bandwidth, while the 0.7 mA typical supply-current drain reduces demand in distributed control hardware. Include transient suppression and verify the signal remains inside the common-mode and output-swing limits specified in the datasheet.
推薦
Low-Level Voltage Amplification
The LM2904QDRG4 can amplify low-level differential or single-ended sensor voltages when the required bandwidth is consistent with a 700 kHz gain-bandwidth product. Its internally frequency-compensated amplifiers simplify implementation of standard inverting, non-inverting, and differential gain stages. The common-mode input range includes ground, making the device useful for circuits operating near the lower supply rail. The 0.3 V/µs slew rate limits large-signal response, so it is better suited to general instrumentation than precision audio or wideband measurement paths.
推薦
Actuator Driver Feedback
The dual LM2904QDRG4 architecture supports actuator-driver feedback, where one channel amplifies the command or driver signal and the other senses the resulting feedback voltage. The 26 V supply capability accommodates industrial power rails better than a typical 5 V amplifier, while the 700 kHz gain-bandwidth product is adequate for many servo and valve-control loops. The 8-SOIC package reduces board area by combining two independent amplifiers. Check output-current capability, capacitive-load stability, and saturation recovery against the datasheet before driving valves, relays, or power stages.
推薦
Power-Supply Monitoring
The LM2904QDRG4 can monitor a power rail or control signal by comparing the sensed voltage against a reference and producing an amplified error signal. Its 26 V operating capability is useful for 24 V industrial systems, and two channels allow one stage to monitor while the other amplifies or buffers the result. The 0.7 mA typical supply-current drain is advantageous when supervisory circuitry remains continuously powered. The design must account for input offset, output saturation, and tolerance across the full supply range rather than assuming rail-to-rail accuracy.
推薦
General-Purpose Dual Signal Conditioning
The LM2904QDRG4 consolidates two general-purpose amplifier channels into one 8-SOIC package, reducing component count in instrumentation and interface boards. The channels operate independently, allowing one to amplify and the other to invert, buffer, or compare. Its 700 kHz gain-bandwidth product and 0.3 V/µs slew rate cover many audio-band and low-frequency control applications, while operation up to 26 V supports higher-voltage systems. Designers should still account for input common-mode limits, output swing, stability with capacitive loading, and channel-to-channel behavior.
推薦
推薦產品摘要
工程參考資料，適用於 LM2904QDRG4 — 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 | LM2904DR | LM2904QDRG4Q1 | LM2904YDT | LM2904VDR2G | LM2904QDR |
|---|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 8-SOIC, 3.90 mm body width | 8-SOIC, 3.90 mm body width | 8-SOIC, 3.90 mm body width | 8-SOIC, 3.90 mm body width | 8-SOIC, 3.90 mm body width | 8-SOIC, 3.90 mm body width |
| Amplifier Channels | 2 circuits | 2 circuits | 2 circuits | 2 circuits | 2 circuits | 2 circuits |
| Amplifier Type | General Purpose | General Purpose | General Purpose | General Purpose | General Purpose | General Purpose |
| 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 |
| Typical Supply-Current Drain | 0.7 mA | 0.7 mA | 0.7 mA | 0.7 mA | 0.7 mA | 0.7 mA |
| Common-Mode Input Range | Includes ground | Includes ground | Includes ground | Includes ground | Includes ground | Includes ground |
| Compensation | Internally frequency compensated | Internally frequency compensated | Internally frequency compensated | Internally frequency compensated | Internally frequency compensated | Internally frequency compensated |
主要差異化特點
- Combines two independent general-purpose amplifiers in one narrow-body 8-SOIC (對比MCP6043-E/P)
- Supports higher supply voltage than conventional low-voltage general-purpose amplifiers (對比MCP608-I/SN)
- Provides enough bandwidth for general control and instrumentation paths (對比TLV2462ID)
設計說明
The LM2904 family supports a total supply of up to 26 V, but industrial and automotive rails can contain transients beyond that limit. Place a suitable protection network between the rail and the amplifier, route the return current directly to the supply reference, and add local bypass capacitors at the device. Confirm the selected protection component's voltage rating and the amplifier's operating region before connecting power.
Use a short, low-impedance path from each bypass capacitor to the corresponding supply and ground pins. Keep input and feedback traces away from the output node and from switching or high-current traces. Because the amplifiers are internally frequency compensated, the design still requires stable feedback ratios and an appropriate source and load impedance; confirm stability in simulation when driving unusual capacitive loads.
Do not assume rail-to-rail input or output operation. The common-mode input range includes ground, but it does not necessarily extend to the positive supply rail, and the output swing is also limited. Check both channels against the actual signal range and load, especially in single-supply systems where the amplifier must process signals near ground while driving a biased output.
合規資訊
The LM2904 family is associated with automotive and industrial applications, but the retrieved information does not explicitly state the RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status of the exact LM2904QDRG4 ordering code.
