LM2904QM8-13 - 36 V Dual Op Amp | Diodes Incorporated
MPN: LM2904QM8-13 ✓ Hoạt độngLM2904QM8-13 Tóm tắt
An operational amplifier is a high-gain analog building block that compares an input voltage with a feedback voltage and drives its output to reduce the difference between them. In the signal-conditioning hierarchy, the LM2904QM8-13 belongs to the general-purpose operational-amplifier class, a type of analog amplifier used in instrumentation, sensor interfaces, active filters, and closed-loop control. Its dual-channel configuration allows two amplifier functions in one package while reducing board area.
The main features of this device include two amplifier circuits, a 36 V maximum total supply voltage, 500 uA supply current, 20 nA input offset current, and 100 dB open-loop gain. The automotive-compliant construction identifies it for applications requiring a higher-reliability general-purpose amplifier. Its MSOP-8 package supports compact PCB layouts, while the -13 ordering suffix identifies tape-and-reel production packaging.
The manufacturer describes the LM2904Q family as automotive-compliant dual and quad operational amplifiers, with industry-standard pinouts and green mold compound. The LM2904Q and LM2904AQ devices are offered in SO-8, TSSOP-8, and MSOP-8 packages. This package compatibility gives engineers a familiar circuit implementation, while the dual topology simplifies circuits requiring one signal-conditioning channel and one feedback or drive channel.
Typical uses include low-side current sensing, transducer amplification, active filtering, comparator-style signal conditioning, and general industrial control. In current-sensing applications, the amplifier compares a scaled voltage across a shunt with a reference. In sensor interfaces, it amplifies small voltage changes around a common-mode level. In active filters, its gain-bandwidth behavior and open-loop gain define the operating point when combined with external resistors and capacitors.
For a new layout, verify the MSOP-8 pin assignment and orient the exposed package according to the manufacturer datasheet before assigning input, output, supply, and feedback connections. Decoupling capacitors should be placed close to the supply pins, and sensitive input traces should be kept away from switching nodes and high-current paths. The 36 V rating is a maximum operating limit rather than a recommended supply condition.
This page organizes the verified device characteristics, package information, application guidance, and same-family replacement candidates into a practical engineering reference. It also highlights where a new design should consult the manufacturer datasheet for detailed electrical limits, test conditions, pin definitions, and qualification criteria.
Bộ thay thế dễ dàng lắp đặt cho LM2904QM8-13 — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với LM2904QM8-13 (cùng hình factor và footprint) — khác nhau ở Package, Automotive Qualification, Input Bias Current.
LM2904QDRQ1
✅ Drop-In✗ Hết hàng
$0.22 / Đơn vị
Xem tài liệu →LM2904AQ
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
LM2904AAQ
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
LM2904QM8-13 Tỷ lệ tối đa & tính chất điện
| Amplifier Type | General-purpose operational amplifier |
| Number of Circuits | 2 circuits |
| Number of Amplifier Channels | 2 channels |
| Maximum Total Supply Voltage | 36 V |
| Nominal Total Supply Voltage | +/-18 V |
| Điện áp cung cấp | 500 uA |
| Input Offset Current | 20 nA |
| Open-Loop Gain | 100 dB |
| Automotive Classification | Automotive compliant |
| Hộp | MSOP-8 |
| Kiểu lắp đặt | Surface mount |
| Ordering Package | Tape and reel |
| Mold Compound | Green mold compound |
| Pin Layout | Industry-standard pinout |
Hướng dẫn cấu hình chân LM2904QM8-13 tape and reel
Cấu hình chân cho LM2904QM8-13 (tape and reel gói). Động cơ điện này có chân cổng, nguồn và đầu ra. Đối với các gói không phân極, tham khảo tài liệu thông số kỹ thuật của nhà sản xuất để biết hướng dẫn chính xác của chân 1 và chi tiết về vân footprint. Các ứng dụng phổ biến bao gồm thiết kế nguồn cung cấp điện, điều khiển động cơ và chuyển đổi tải.
Không có dữ liệu chân cụ thể sẵn có cho LM2904QM8-13.
Tham khảo: tài liệu kỹ thuật cho cấu hình chân đầy đủ.
Ứng dụng tiêu biểu
LM2904QM8-13 phù hợp cho 6 Áp dụngs: Automotive Sensor Signal Conditioning, Low-Side Current Sensing, Active Audio and Analog Filters, Industrial Control and Data Acquisition, Transducer and Bridge Interfaces, General-Purpose Voltage Amplification.
Automotive Sensor Signal Conditioning
The LM2904QM8-13 fits two-channel automotive sensor conditioning because it combines two general-purpose amplifier circuits in an 8-pin MSOP package and is identified by the manufacturer as automotive compliant. One channel can amplify a sensor signal while the other provides gain, buffering, or an intermediate reference-conditioning function. Its 20 nA input offset current is relevant when source impedance converts offset current into a meaningful input-voltage error. Before finalizing the circuit, confirm the selected suffix's operating-temperature range, common-mode limits, output swing, and electromagnetic-compatibility requirements.
Được đề xuất
Low-Side Current Sensing
The LM2904QM8-13 can amplify the small voltage generated across a low-side shunt when a bipolar supply is available. With a 36 V maximum total supply rating and 100 dB open-loop gain, it can provide useful signal headroom around a scaled shunt voltage while the two channels support an instrumentation-style implementation. The designer should choose shunt and feedback values that keep the amplifier inside its input common-mode range, then verify offset error using the 20 nA input offset-current figure and source impedance.
Được đề xuất
Active Audio and Analog Filters
The LM2904QM8-13 is suitable for modest-bandwidth active filtering and general analog signal processing where two independent amplifier channels are useful. The 100 dB open-loop gain provides loop gain for closed-loop configurations, while the 500 uA supply current supports low-power system operation. A practical filter must be designed around the device's actual gain-bandwidth product, slew rate, output-swing limits, and stability behavior. Dual-channel use can implement a two-pole active filter or two separate signal paths without requiring two packages.
Được đề xuất
Industrial Control and Data Acquisition
The LM2904QM8-13 fits industrial data-acquisition and control blocks that require general-purpose amplification around a bipolar supply. Its two channels can condition two low-level inputs or provide signal gain and feedback functions within a compact MSOP-8 footprint. The 36 V total supply rating offers useful voltage-range potential, but the operating supply should be selected below the maximum rating with suitable margin. Validate noise, input bias behavior, common-mode range, and channel matching against the specific production suffix before using it in a precision acquisition path.
Được đề xuất
Transducer and Bridge Interfaces
The dual LM2904QM8-13 can serve as an instrumentation-style interface for a bridge or another transducer when the common-mode voltage falls within the amplifier's permitted range. One channel may amplify the sensor signal while the second handles a reference or auxiliary signal. Its 20 nA input offset current makes high-impedance sources particularly sensitive to bias-network selection, and its 100 dB open-loop gain can improve closed-loop accuracy when feedback resistors are balanced. Confirm bridge excitation limits, input bias current, and output-swing margin in the manufacturer datasheet.
Được đề xuất
General-Purpose Voltage Amplification
The LM2904QM8-13 can amplify low-level voltage signals in test, interface, and feedback applications that do not require a rail-to-rail input or output. A 36 V maximum total supply and 100 dB open-loop gain allow conventional closed-loop amplifier configurations with external feedback components. The dual package can implement a voltage gain stage plus an inverter or buffer. Designers must account for the 500 uA supply current when defining the power budget and confirm the output-voltage swing at the intended load, since the maximum supply rating alone does not guarantee rail-to-rail operation.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho LM2904QM8-13 — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | LM2904Q | LM2904AQ | LM2904AAQ |
|---|---|---|---|---|
| Package | MSOP-8 | MSOP-8 | MSOP-8 | MSOP-8 |
| Brand | Diodes Incorporated | Diodes Incorporated | Diodes Incorporated | Diodes Incorporated |
| Amplifier Configuration | Dual | Dual | Dual | Dual |
| Maximum Total Supply Voltage | 36 V | 36 V | 36 V | 36 V |
| Supply Current | 500 uA | 500 uA | 500 uA | 500 uA |
| Input Offset Current | 20 nA | 20 nA | 20 nA | 20 nA |
| Open-Loop Gain | 100 dB | 100 dB | 100 dB | 100 dB |
Bảo phân biệt quan trọng
- Automotive-compliant option with the standard LM2904 family architecture (vsLM2904Q)
- Two amplifier channels in a compact 8-pin MSOP package (vsLM2904AQ)
- MSOP-8 tape-and-reel ordering configuration (vsLM2904AAQ)
Ghi chú thiết kế
Place supply-bypass capacitors close to the MSOP-8 power pins and connect each bypass capacitor directly to its intended ground reference. Keep the feedback resistors and input components near the amplifier pins to minimize parasitic inductance and capacitive loading. Follow the manufacturer package drawing for pin-one orientation and pad geometry rather than deriving the footprint only from the generic MSOP-8 outline.
Route sensitive non-inverting and inverting inputs away from power switches, relay contacts, inductors, and high-current return paths. Ground currents from the load should return to the supply entry point rather than through the analog ground region. Because the amplifier provides 100 dB open-loop gain and 20 nA input offset current, small layout-induced errors can become meaningful in high-impedance sensor circuits.
Do not treat the 36 V total supply rating as a recommended operating point or assume that the output can swing rail to rail. Check the selected suffix's common-mode range, output-swing limits, supply-current limit, and operating-temperature range in the manufacturer datasheet. For a high-impedance source, include the voltage error created by input bias current and input offset current when setting the signal-chain accuracy budget.
Estimated: with a 36 V total supply, 500 uA supply current, and approximately 100% quiescent-current efficiency, the amplifier can dissipate up to 18 mW from the supply. Actual dissipation depends on the operating voltage and output current because the device also supports output drive. This estimate uses the stated 36 V maximum total supply and 500 uA supply-current values; confirm thermal limits and output loading from the manufacturer datasheet.
Thông tin tuân thủ
The manufacturer datasheet identifies the LM2904Q family as automotive compliant and states that green mold compound is standard. No explicit RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals declaration was present, so those fields are not treated as confirmed.
