LM2904DMR2G - Dual 3-26V Low-Power Op Amp | onsemi
MPN: LM2904DMR2G ✓ সক্রিয়LM2904DMR2G সারাংশ
An operational amplifier is a voltage-gain building block used throughout analog electronics. Its differential input stage compares two input voltages and drives an output to amplify the difference between them. The LM2904 belongs to the bipolar operational-amplifier hierarchy, combining two amplifier channels in one package for general-purpose precision, control, and instrumentation applications.
The LM2904DMR2G provides two amplifier circuits, a gain-bandwidth product of 1 MHz, and a maximum supply voltage of 32 V. Its specified operating temperature range is -40°C to 105°C. The 3 V to 26 V operating supply range supports low-voltage systems as well as higher-voltage industrial circuits when the total supply and input limits are observed.
The bipolar internal design favors low-cost, general-purpose signal conditioning rather than rail-to-rail input or output operation. Its common-mode input range extending to ground or VEE is particularly useful with single-supply sensors whose signals remain near the lower rail. Single-supply and split-supply operation gives designers flexibility when building signal paths around positive-only or bipolar reference voltages.
Typical uses include low-side current monitoring, pressure and temperature sensor interfaces, audio preamplifier stages, industrial control loops, and general amplifier or buffer configurations. The two independent channels can process different signals or implement a more complete analog function within one compact 8-MSOP package.
Designers should check input and output common-mode limits at the selected supply voltage and load current. Stable operation with capacitive loads may require an isolation resistor or an application-specific compensation network. PCB placement should keep input and feedback traces short, provide a stable ground reference, and avoid routing sensitive signals beside switching nodes or high-current power paths.
This page combines the LM2904DMR2G package and operating characteristics with practical design guidance, verified drop-in candidates, application analysis, and a parameter-by-parameter comparison. It is intended to help engineers confirm compatibility, assess supply and thermal margins, and select an amplifier that can be implemented without unnecessary PCB redesign.
এর জন্য ড্রপ-ইন বিকল্প LM2904DMR2G — একই package, pin-to-pin compatible। ভিন্ন package-এর যেসব পার্টে PCB rework প্রয়োজন সেগুলো বাদ দেওয়া হয়েছে।
এই সিরিজের ভ্যারিয়েন্ট
একই সিরিজের মডেল যেগুলো drop-in compatible LM2904DMR2G (একই form factor এবং footprint) — পার্থক্য রয়েছে Amplifier Type, Package Width.
LM2904VDMR2G
✅ ড্রপ-ইনমূল্যের জন্য যোগাযোগ করুন
ডেটাশিট দেখুন →LM2904ADMR2G
✅ ড্রপ-ইনমূল্যের জন্য যোগাযোগ করুন
ডেটাশিট দেখুন →LM2904DMR2G সর্বোচ্চ রেটিং ও বৈদ্যুতিক বৈশিষ্ট্য
| Amplifier Type | General-purpose operational amplifier |
| Number of Amplifier Circuits | 2 circuits |
| Operating Supply Voltage Range | 3 V to 26 V |
| Maximum Supply Voltage | 32 V |
| Gain-Bandwidth Product | 1 MHz |
| অপারেটিং তাপমাত্রার পরিসর | -40°C to 105°C |
| প্যাকেজ | 8-MSOP |
| পিন সংখ্যা | 8 pins |
| Package Length | 3 mm |
| Package Width | 3.9 mm |
| Technology | Bipolar |
| মাউন্টিং স্টাইল | SMD/SMT |
| Supply Configuration | Single supply or split supply |
| Common-Mode Input Range | Extends to ground or VEE |
| Power Consumption | Low power drain |
LM2904DMR2G 3.9 mm পিন কনফিগারেশন গাইড
LM2904DMR2G (3.9 mm প্যাকেজ)-এর পিন কনফিগারেশন। এই অ্যানালগ কম্পোনেন্টে ইনপুট, আউটপুট ও পাওয়ার সাপ্লাই পিন রয়েছে। অফসেট নাল, কম্পেনসেশন ও এনেবল পিন কনফিগারেশনের জন্য প্রস্তুতকারকের ডেটাশিট দেখুন। সিগন্যাল কন্ডিশনিং ও অ্যামপ্লিফায়ার সার্কিটের জন্য আদর্শ।
এর জন্য বিস্তারিত পিনআউট ডেটা পাওয়া যায়নি LM2904DMR2G.
দেখুন ডেটাশিট সম্পূর্ণ পিন কনফিগারেশনের জন্য।
সাধারণ ব্যবহার
LM2904DMR2G এর জন্য উপযুক্ত 6 অ্যাপ্লিকেশনs: Low-Side Current Monitoring, Industrial Sensor Interfacing, Audio Preamplifier Stages, Process-Control Feedback Loops, Data Acquisition Front Ends, General-Purpose Buffering.
Low-Side Current Monitoring
The LM2904DMR2G is suitable for amplifying the small voltage produced by a low-side current-sense resistor. Its two amplifier channels can form a gain stage and an output buffer, while the 1 MHz gain-bandwidth product supports bandwidths well below the amplifier limit. The 3 V to 26 V supply range accommodates 5 V, 12 V, and 24 V systems. Keep the input common-mode voltage inside the operating limits, and use a Kelvin connection from the sense resistor to minimize errors from copper resistance.
সুপারিশকৃত
Industrial Sensor Interfacing
The LM2904DMR2G fits sensor-amplifier stages operating from industrial 12 V or 24 V rails. Its common-mode input range extends toward ground or VEE, making it useful for sensors whose output is close to the lower rail. The -40°C to 105°C operating range covers many industrial environments, and the 1 MHz bandwidth supports common pressure, temperature, and position sensing signals. Confirm that the sensor output stays within the common-mode limits and add filtering appropriate to the measured bandwidth.
সুপারিশকৃত
Audio Preamplifier Stages
The two channels in LM2904DMR2G can implement small-signal audio preamplifier or buffering stages where a general-purpose bipolar amplifier is sufficient. The 1 MHz gain-bandwidth product permits moderate closed-loop bandwidth, while the dual package reduces the number of active components. The LM2904DMR2G is more appropriate for low-frequency microphone or line-level conditioning than for high-fidelity audio paths requiring low noise, wide bandwidth, or rail-to-rail output. Use short, shielded signal traces and verify output swing against the selected supply voltage.
সুপারিশকৃত
Process-Control Feedback Loops
The LM2904DMR2G can serve as the amplifier in a basic industrial process-control loop by conditioning a sensor reference and driving a control stage. Its 1 MHz gain-bandwidth product is ample for many slow thermal, level, or pressure loops, while dual channels can be assigned to separate signal paths. The 3 V to 26 V supply range supports common control hardware. Validate loop stability, output-current demand, and saturation recovery at the minimum expected loop gain before deployment.
সুপারিশকৃত
Data Acquisition Front Ends
The LM2904DMR2G can provide differential gain and buffering ahead of an ADC in a general-purpose acquisition system. Its 1 MHz gain-bandwidth product is suitable for many low-frequency measurements, and the common-mode input range extending toward ground or VEE helps when the source operates near the lower rail. The two channels can amplify a differential sensor signal or buffer multiple inputs. Verify ADC input range, settling time, noise, and common-mode compatibility as a complete signal chain.
সুপারিশকৃত
General-Purpose Buffering
The LM2904DMR2G is appropriate for unity-gain or moderate-gain buffering when source and sink capability, offset, and noise meet the circuit requirements. Two channels provide independent buffers in a single 8-MSOP package, helping conserve PCB area in dense analog designs. Its 3 V to 26 V supply range supports several industrial and embedded rails. Account for input and output swing limits, load capacitance, and output-current demand; otherwise, a buffer can introduce unexpected distortion or instability.
সুপারিশকৃত
সুপারিশকৃত পণ্যের সারসংক্ষেপ
এর জন্য ইঞ্জিনিয়ারিং রেফারেন্স ডেটা LM2904DMR2G — তুলনা, ডিজাইন গাইডেন্স এবং কমপ্লায়েন্স তথ্য।
নির্বাচন গাইড
বিকল্পের সাথে তুলনা
| পারামিটার | এই পণ্য | LM2904VDMR2G | LM2904ADMR2G |
|---|---|---|---|
| Package | 8-MSOP | 8-MSOP | 8-MSOP |
| Brand | onsemi | onsemi | onsemi |
| Amplifier Channels | 2 circuits | 2 circuits | 2 circuits |
মূল পার্থক্যসমূহ
- Two general-purpose amplifier channels in one compact package (বনামLM2904VDMR2G)
- Broad industrial supply capability (বনামLM2904ADMR2G)
- Single- and split-supply flexibility (বনামLM2904VDMR2G)
ডিজাইন নোট
Place the positive and ground bypass capacitors close to the LM2904DMR2G supply pins, and use the capacitance and ceramic type recommended in the manufacturer datasheet. Keep the exposed trace or pad area free of long thermal and high-current paths where practical. Route the two input channels separately from switching inductors, relay contacts, and motor drive nodes to prevent common-impedance coupling.
Do not assume that an amplifier can reach its negative supply rail. Although the LM2904 common-mode input range extends toward ground or VEE, the valid range depends on supply voltage and output state. Check the input common-mode graph, output swing, and load current before using small sensor signals. In feedback circuits, also confirm that the selected closed-loop gain remains stable with the intended output load and capacitive loading.
Keep feedback components and signal traces compact, and connect the inverting-input return path away from high-impedance bias networks. For sensor inputs, use a guarded or shielded route where cable noise is significant, and place anti-alias filters close to the amplifier. The 1 MHz gain-bandwidth product is sufficient for many low-frequency signals but should not be treated as unrestricted bandwidth at high gain or with capacitive loading.
Estimated: the total dissipated power equals the sum of the two channels' quiescent dissipation and load-related dissipation. With a 24 V supply, two channels at 1 mA each contribute approximately 48 mW before output-current losses; calculate actual values using the datasheet supply-current curves and operating common-mode condition. Verify the resulting junction temperature against the -40°C to 105°C device rating and the PCB's thermal resistance.
কমপ্লায়েন্স তথ্য
The accessible product information identifies the LM2904DMR2G as an onsemi general-purpose operational amplifier in an 8-MSOP package but does not state the requested environmental or material-compliance certifications.
