LM2904DE4 - Dual 26V 700kHz Op Amp | Texas Instruments
MPN: LM2904DE4 ✓ AktifLM2904DE4 Ringkasan
An operational amplifier is an analog amplifier that uses high open-loop gain and negative feedback to amplify voltage differences. Within the semiconductor hierarchy, an operational amplifier belongs to the amplifier IC and signal-conditioning category. The LM2904 combines two general-purpose amplifier channels in a single package, reducing board area when a design requires matched dual-channel functions such as filtering, buffering, or gain stages.
The LM2904DE4 provides a 700 kHz gain-bandwidth product, a 0.3 V/µs slew rate, and a low 0.7 mA typical supply-current drain independent of supply voltage. Its common-mode input range includes ground, making it useful in circuits that operate near the lower supply rail. The dual configuration supports applications in industrial controls, sensor interfaces, audio paths, and general-purpose analog signal conditioning.
The 26 V maximum supply rating provides ample headroom for conventional industrial supply rails, although the actual operating voltage must remain within the manufacturer’s specified limits. Because this is a general-purpose amplifier rather than a precision part, design engineers should verify input offset, input bias current, output swing, and channel behavior against the application’s signal-integrity requirements. Feedback-network components and signal-source impedances determine practical accuracy and stability.
Typical uses include two-stage sensor amplification, low-frequency active filters, buffered instrument inputs, audio preamplification, and general industrial signal conditioning. The 8-pin SOIC package is also compatible with conventional surface-mount assembly and automated PCB manufacturing. The dual organization allows one package to implement complementary signal paths while reducing component count compared with two separate single amplifiers.
For stable operation, follow the manufacturer’s recommended compensation and decoupling practices, place input and output networks close to the device, and avoid driving the output beyond its specified load and swing limits. Grounding and trace-return paths should be planned to prevent supply and ground noise from entering the signal path. The manufacturer datasheet is the controlling reference for electrical limits, pin functions, and application details.
This product page combines the official family specifications with practical design guidance, application fit analysis, and a package-focused replacement comparison. It is intended to help engineers identify the correct operating limits and select a pin-compatible alternative without overlooking differences in bandwidth, slew rate, supply current, or package construction.
Pilihan pengganti yang segera untuk LM2904DE4 — sama paket, pin-pin kompatibel. Bahagian paket yang berbeza memerlukan kerja ulang PCB diasingkan.
Varietas dalam siri ini
Model serupa yang kompatibel dengan pengganti yang segera LM2904DE4 (sama faktor bentuk dan kaki) — berbeza dalam Amplifier Type, Package, Mounting Type, Gain-Bandwidth Product, Maximum Supply Voltage.
LM2904P3
✅ Masuk Drop-InHubungi untuk harga
Lihat Datasheet →TLV2402ID
✅ Masuk Drop-InHubungi untuk harga
Lihat Datasheet →LM358DR
✅ Masuk Drop-InHubungi untuk harga
Lihat Datasheet →LMV358DR
✅ Masuk Drop-In📋 Alternatif rujukan (tidak dalam katalog)
RC4558DR
✅ Masuk Drop-In📋 Alternatif rujukan (tidak dalam katalog)
LM2904DE4 Penilaian maksimum & Ciri-ciri Elektrik
| Amplifier Type | General-purpose dual operational amplifier |
| Number of Circuits | 2 circuits |
| Maximum Supply Voltage | 26 V |
| Gain-Bandwidth Product | 700 kHz |
| Slew Rate | 0.3 V/µs |
| Typical Supply-Current Drain | 0.7 mA |
| Supply-Current Drain Dependence | Independent of supply voltage |
| Common-Mode Input Range | Includes ground |
| Kemasan | 8-SOIC, 0.154 in (3.90 mm) body width |
| Packaging | Tube |
| Jenis Pemasangan | Surface mount |
Konfigurasi Pin LM2904DE4
| Pin 1 | OUTA — Amplifier A output |
| Pin 2 | INA− — Amplifier A inverting input |
| Pin 3 | INA+ — Amplifier A non-inverting input |
| Pin 4 | V+ — Positive supply connection |
| Pin 5 | INB+ — Amplifier B non-inverting input |
| Pin 6 | INB− — Amplifier B inverting input |
| Pin 7 | OUTB — Amplifier B output |
| Pin 8 | V− — Negative supply connection or ground in single-supply operation |
Aplikasi Biasa
LM2904DE4 patut untuk 6 aplikasis: Industrial Sensor Signal Conditioning, Active Audio Preamplification, Low-Frequency Active Filters, Control-System Error Amplification, Buffered Instrumentation Inputs, General-Purpose Dual Amplification.
Industrial Sensor Signal Conditioning
The LM2904DE4 suits low-frequency industrial sensor front ends that require two amplifier channels, moderate bandwidth, and low supply current. Its 700 kHz gain-bandwidth product supports gain stages above the sensor’s signal bandwidth, while the common-mode input range that includes ground is useful for signals referenced near the lower rail. Place one channel around a differential sensor input and use the second for filtering or output buffering. Check offset voltage and bias-current requirements for high-impedance sources because general-purpose performance may be insufficient for precision measurement.
Disebarkan
Active Audio Preamplification
The LM2904DE4 can provide two general-purpose gain stages for microphone, line, or control-signal preamplification. Its 0.3 V/µs slew rate handles moderate audio-bandwidth waveforms without requiring a high-speed amplifier, and the 700 kHz gain-bandwidth product allows useful closed-loop bandwidth in typical non-precision audio stages. The 8-SOIC package simplifies conventional surface-mount assembly. Keep the feedback resistors close to the device, verify output headroom at the selected supply voltage, and choose resistor values that preserve stability with the source impedance.
Disebarkan
Low-Frequency Active Filters
The LM2904DE4 is appropriate for first- and second-order active-filter stages operating well below its 700 kHz gain-bandwidth product. Two independent channels allow implementation of a cascaded filter, an inverting section followed by a buffer, or separate processing for balanced signals. Its 0.7 mA typical supply-current drain supports compact low-power analog modules, while the 26 V maximum supply rating covers conventional industrial rails. Select external resistor and capacitor values from the target cutoff frequency and use the manufacturer’s stability guidance, particularly at low closed-loop gains or with high source impedances.
Disebarkan
Control-System Error Amplification
The LM2904DE4 can serve as an error amplifier in a general control loop where signal bandwidth remains well below 700 kHz. Two channels may form an error amplifier and actuator-output stage, or they may provide separate positive and negative error paths. The common-mode input range that includes ground supports feedback nodes near the lower supply rail, and the 0.3 V/µs slew rate is useful for correcting moderate plant dynamics. Validate loop stability, output swing, load capability, and compensation values because a general-purpose amplifier does not automatically guarantee closed-loop stability in every topology.
Disebarkan
Buffered Instrumentation Inputs
The LM2904DE4 provides a practical choice for buffering sensor, transducer, or test-signal inputs before they reach an ADC or measurement block. Its 700 kHz gain-bandwidth product comfortably covers many low-frequency measurement channels, while dual packaging can buffer two related inputs. The common-mode range that includes ground is helpful for zero-based sensors, but the complete signal must remain inside the amplifier’s permitted operating region. Account for input bias current when driving high source impedances and provide a stable reference return to minimize channel-to-channel error.
Disebarkan
General-Purpose Dual Amplification
The LM2904DE4 is appropriate when one board needs two independent general-purpose amplifier functions without using separate single-channel packages. Typical uses include waveform shaping, comparator-style threshold conditioning, gain-and-bias networks, and signal routing. The 8-SOIC arrangement contains two complete channels, and the 0.7 mA typical supply-current drain keeps power use modest. Because general-purpose operation trades precision for broad utility, establish the minimum gain, usable bandwidth, output load, supply range, and temperature grade before using it in a new design.
Disebarkan
Ringkasan Produk Disebarkan
Data referensi kejuruteraan untuk LM2904DE4 — perbandingan, panduan rancangan, dan maklumat kesediaan
Panduan Pilihan
Perbandingan dengan Gantian
| Parametr | Produk Ini | LM2904P3 | TLV2402ID | LM358DR | LMV358DR | RC4558DR |
|---|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | STMicroelectronics | STMicroelectronics | onsemi |
| Package | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC |
| Amplifier Configuration | Dual general-purpose operational amplifier | Dual general-purpose operational amplifier | Dual operational amplifier | Dual operational amplifier | Dual operational amplifier | Dual operational amplifier |
Penyeberangsung Jelas
- Closest same-family surface-mount option (vsLM2904P3)
- Established general-purpose dual-amplifier supply rating (vsLM358DR)
- Lower-voltage rail-to-rail option for constrained rails (vsTLV2402ID)
Catatan Desain
Do not treat the 26 V rating as a recommended operating point. The rating is an absolute maximum constraint, while the allowed supply range, input range, output swing, and thermal conditions must be taken from the manufacturer’s recommended operating conditions. Also avoid assuming that the 0.7 mA typical figure applies identically to both channels under every load condition. Design the supply and thermal path for the actual channel loading and temperature.
Place the SOIC close to the feedback resistors and bypass capacitor, and route input and output traces away from switching nodes and supply-return paths. The common-mode range that includes ground helps with ground-referenced signals, but the input pins must still remain within their permitted common-mode limits. Maintain a low-impedance ground reference under both amplifier channels and check the unused channel configuration against the manufacturer recommendations.
Use the manufacturer’s recommended feedback and compensation values for the intended closed-loop gain. The 700 kHz gain-bandwidth product does not imply 700 kHz of usable closed-loop bandwidth at every gain, and high source impedance can combine with input capacitance to alter frequency response. For sensor interfaces, compare the amplifier’s input bias current with the sensor impedance and evaluate offset error at the actual operating temperature.
Maklumat Kesediaan
Compliance declarations were not identified in the referenced product information. Verify the current declarations for the exact LM2904DE4 ordering code before production release.
