LM2904M8-13 - Dual 700 kHz Op Amp | Diodes Incorporated
Teilenummer: LM2904M8-13 ✓ AktivLM2904M8-13 Übersicht
An operational amplifier is an analog signal-conditioning IC that amplifies the voltage difference between its inverting and non-inverting inputs. Operational amplifiers belong to the amplifier IC hierarchy and are widely used in sensor interfaces, filters, comparators, feedback-control loops, and low-frequency signal-processing circuits. The LM2904 combines two operational amplifiers in one compact surface-mount package, reducing board area compared with separate single-channel devices.
Each LM2904 channel provides high open-loop gain and a 700 kHz gain-bandwidth product. The 2 mV input offset rating helps limit output error in DC amplifier and comparator circuits. Single-supply operation from 3 V to 36 V makes the device suitable for industrial control, instrumentation, sensor-conditioning, and power-supply feedback applications. Its -40°C to +125°C characterization also supports designs operating across extended temperature ranges.
The LM2904 architecture supports both single-supply and split-supply operation. In a single-supply circuit, the input common-mode range, output swing, and bias arrangement remain important design constraints, particularly when signals remain close to ground. With dual supplies, the two amplifier channels can process signals around ground more naturally, although common-mode and output-range checks remain necessary at the supply limits.
Typical uses include transimpedance amplifiers for low-frequency sensor signals, active filters for analog signal conditioning, threshold detectors, and closed-loop control amplifiers. The two channels may also be configured as a comparator, voltage follower, or differential amplifier, depending on the feedback network and system voltage requirements. Its 8-MSOP package is suited to compact industrial and embedded control boards where a dual amplifier offers practical space savings.
For reliable layout, place input and feedback components close to their corresponding pins and keep sensitive input traces away from high-current switching paths. The power-supply pins require effective bypassing with a short ground return. Confirm that input and output signal levels remain inside the amplifier's usable common-mode and output ranges, particularly in single-supply configurations where the available signal headroom is reduced.
This page combines the manufacturer datasheet, distributor listings, package and pinout information, application guidance, and replacement-selection criteria to support faster engineering evaluation. Review the electrical limits and application circuit in the Diodes Incorporated LM2904/LM2902 datasheet before finalizing a production design.
Drop-in-Alternativen für LM2904M8-13 – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.
Für dieses Produkt sind keine Drop-in-Alternativen verfügbar.
Alternativen anfordernLM2904M8-13 Grenzwerte & elektrische Eigenschaften
| Number of Amplifier Channels | 2 channels |
| Amplifier Type | General-purpose operational amplifier |
| Supply Voltage Range | 3 V to 36 V |
| Gain-Bandwidth Product | 700 kHz |
| Input Offset Voltage | 2 mV |
| Betriebstemperaturbereich | -40°C to +125°C |
| Single-Supply Operation | Supported from 3 V to 36 V |
| Split-Supply Operation | Supported |
| Manufacturer Package | 8-MSOP |
| Montageart | Surface mount |
| Mold Compound | Green mold compound |
LM2904M8-13 Pin-Konfiguration
| Pin 1 | OUT1 — Amplifier 1 output |
| Pin 2 | IN1- — Amplifier 1 inverting input |
| Pin 3 | IN1+ — Amplifier 1 non-inverting input |
| Pin 4 | V- — Ground or negative supply connection |
| Pin 5 | IN2+ — Amplifier 2 non-inverting input |
| Pin 6 | IN2- — Amplifier 2 inverting input |
| Pin 7 | OUT2 — Amplifier 2 output |
| Pin 8 | V+ — Positive supply connection |
Typische Anwendungen
LM2904M8-13 ist geeignet für 6 Anwendungs: Industrial Sensor Signal Conditioning, Active Audio Filtering, Battery and Supply Monitoring, Transimpedance Amplifier, Comparator and Threshold Detection, Embedded Control Feedback Loop.
Industrial Sensor Signal Conditioning
The LM2904M8-13 is appropriate for conditioning low-level sensor signals in industrial control equipment because it combines two independent amplifiers, a 700 kHz gain-bandwidth product, and operation over a 3 V to 36 V supply range. One channel can amplify a transducer output while the other handles a reference, monitor, or filter stage. Its 2 mV input offset rating is important when the target signal is DC and offset error must remain small. The -40°C to +125°C characterization supports extended-temperature environments, although the completed assembly still requires normal thermal validation.
Empfohlen
Active Audio Filtering
The LM2904M8-13 can implement dual active-filter stages for low-frequency audio or communication signals. Its 700 kHz gain-bandwidth product provides useful bandwidth for many tone-control, anti-alias, and noise-shaping networks, while the two channels can form a second-order section or two independent filter paths. Single-supply operation from 3 V to 36 V offers flexibility across different rail architectures. Because the LM2904 is not a rail-to-rail precision op amp, designers should verify the output swing and input common-mode range at the actual supply voltage before selecting resistor and capacitor values.
Empfohlen
Battery and Supply Monitoring
The LM2904M8-13 can monitor a supply or battery-related voltage in power-management circuitry. One channel may compare a divided feedback voltage with a reference, while the other amplifies a scaled sensor output. The wide 3 V to 36 V supply range supports industrial and distributed power systems, and the 700 kHz bandwidth is sufficient for many monitoring paths. The 2 mV input offset specification contributes to threshold accuracy. For battery applications, validate quiescent behavior, input common-mode limits, and leakage using the exact manufacturer electrical characteristics.
Empfohlen
Transimpedance Amplifier
The LM2904M8-13 is suitable for basic low-frequency transimpedance amplification when photodiode, temperature, or other high-impedance sensors require current-to-voltage conversion. Two amplifier channels allow a gain stage and a following filter or buffer within the same 8-MSOP package. Its 700 kHz gain-bandwidth product supports moderate-bandwidth sensing rather than high-speed optical signaling. The input bias current, operating-voltage range, and compensation requirements must be checked carefully because they determine achievable bandwidth and offset error in the selected feedback network.
Empfohlen
Comparator and Threshold Detection
The LM2904M8-13 can be configured as a comparator for threshold detection when its operating limits and output behavior suit the application. One channel can detect an upper limit and the other a lower limit, enabling window monitoring from two sensed voltages. The 2 mV input offset specification affects threshold repeatability, while the 700 kHz gain-bandwidth product provides response well above basic slow-control bandwidth. Single-supply operation is convenient, but output saturation behavior and input common-mode limits must be confirmed for the intended supply and signal levels.
Empfohlen
Embedded Control Feedback Loop
The LM2904M8-13 can implement error amplifiers, integrators, and feedback elements in low-bandwidth embedded control systems. The dual configuration allows one channel to serve a control loop while the second handles an auxiliary feedback or signal-conditioning path. Its 3 V to 36 V supply range and -40°C to +125°C characterization are useful in industrial embedded equipment. Compensation must be evaluated around the complete loop, and the amplifier's output-current capability, slew rate, and stability behavior should be checked against the load and controller response.
Empfohlen
Technische Referenzdaten für LM2904M8-13 – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt |
|---|---|
| Number of Amplifier Channels | 2 channels |
| Supply Voltage Range | 3 V to 36 V |
| Gain-Bandwidth Product | 700 kHz |
| Input Offset Voltage | 2 mV |
| Operating Temperature Range | -40°C to +125°C |
| Package | 8-MSOP |
| Brand | Diodes Incorporated |
| Supply Configuration | Single supply or split supply |
Wichtigste Unterscheidungsmerkmale
- Wide single-supply operating range in a dual 8-MSOP device (vs. LM2904P3)
- Extended-temperature general-purpose dual amplifier (vs. LM2904PW)
- Two independent channels with useful closed-loop bandwidth (vs. Single-amplifier MSOP alternatives)
Designhinweise
Connect the supply pins to a low-impedance bypass network and keep the return path short. Place the principal bypass capacitor close to the positive supply pin and ground connection, then verify startup, supply rejection, and transient response on the assembled board. The LM2904M8-13 accepts a 3 V to 36 V supply, but the usable signal range also depends on the selected single- or split-supply topology.
Route each inverting-input trace as short as practical and keep it away from power-switching nodes and high-current return paths. Place feedback components next to their associated amplifier pins rather than around the package perimeter. Because the two channels share supply pins, each channel should retain its own quiet-ground return where practical to reduce coupling between sensitive and drive-related signals.
Do not assume that the full 3 V to 36 V supply range is also the input common-mode or output swing range. Check the manufacturer electrical characteristics for the actual supply voltage, output load, and temperature. Single-supply operation usually requires careful input biasing, and driving either output close to a rail can reduce linearity or cause saturation.
Compliance-Informationen
The Diodes Incorporated LM2904/LM2902 datasheet states that green mold compound is used as standard. No specific RoHS, REACH, lead-free, halogen-free, conflict-minerals, or AEC-Q100 declaration is identified in the referenced sources.
