LM2902QDRG4Q1 - Quad 1.2MHz Op Amp | Texas Instruments
MPN: LM2902QDRG4Q1 ✓ Hoạt độngLM2902QDRG4Q1 Tóm tắt
An operational amplifier is a voltage-controlled, high-gain analog building block used to amplify, buffer, compare, or sum signals. The LM2902 belongs to the broader operational-amplifier family within analog and amplifier ICs. Its four independent channels let one package provide several conditioning functions while conserving board area and simplifying power distribution in industrial, automotive, and control systems.
Key operating characteristics include four amplifier circuits, a 1.2 MHz gain-bandwidth product, a 0.5 V/µs slew rate, and an operating-temperature range from -40 °C to 125 °C. The automotive-qualified variant is identified as AEC-Q100 compliant in the product listing. Typical common-mode rejection is listed at 80 dB, while input-bias current is listed at -0.5 µA for the cited conditions.
The device uses conventional internally compensated operational-amplifier architecture. Its gain-bandwidth product determines the approximate small-signal bandwidth at a given closed-loop gain, while slew rate limits how quickly the output can follow a large voltage step. For low-frequency precision, sensing, or conditioning functions, the relatively wide common-mode-rejection specification helps reduce output offset caused by common-mode input variation.
Typical uses include industrial sensor conditioning, actuator and control-loop signal processing, automotive interface circuits, buffered analog measurement paths, and general low-frequency amplifier stages. Each channel can implement a noninverting or inverting amplifier, voltage follower, comparator-style interface, or summing function when operated within its electrical limits.
A key design consideration is supply and output-range verification. Single-supply operation is specified from a 5 V supply in the cited product information, and applications using lower or higher rails must be checked against the manufacturer datasheet. Decoupling capacitors should be placed close to the supply pins, with care taken to maintain stability in capacitive-feedback networks.
This product record combines package, electrical, environmental, and automotive attributes with verified substitute references, application guidance, and a parameter-by-parameter comparison. It is intended to accelerate component selection and PCB planning for engineers evaluating a genuine 14-SOIC quad operational amplifier.
Bộ thay thế dễ dàng lắp đặt cho LM2902QDRG4Q1 — 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 LM2902QDRG4Q1 (cùng hình factor và footprint) — khác nhau ở Package, Automotive Qualification, Amplifier Type, Number of Amplifier Channels, Number of Amplifiers.
LM2902QDRQ1
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →LM2902DRG4
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →LM2902KVQDRQ1
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →LM2902QDRG4
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
LM2902D
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →LM2902QDRG4Q1 Tỷ lệ tối đa & tính chất điện
| Amplifier Type | General Purpose |
| Number of Circuits | 4 circuits |
| Number of Amplifiers | 4 amplifiers |
| Gain-Bandwidth Product | 1.2 MHz |
| Slew Rate | 0.5 V/µs |
| Điện áp cung cấp | 5 V |
| Input Bias Current | -0.5 µA |
| Common-Mode Rejection Ratio | 80 dB |
| Nhiệt độ hoạt động | -40 °C to 125 °C |
| Hộp | 14-SOIC, 3.90 mm width |
| Kiểu lắp đặt | Surface Mount |
| Packaging | Tape and Reel |
| Automotive Qualification | AEC-Q100 compliant |
| Trạng thái RoHS | Compliant |
| Human Body Model ESD | >2 kV |
| Machine Model ESD | >200 V |
| Charged Device Model ESD | 2 kV |
| Single-Supply Operation | 5 V |
Hướng dẫn cấu hình chân LM2902QDRG4Q1 14-soic, 3.90 mm width
Cấu hình chân cho LM2902QDRG4Q1 (14-soic, 3.90 mm width gói). Thành phần số hiệu này có chân đầu vào, đầu ra và nguồn cung cấp. Tham khảo tài liệu thông số kỹ thuật của nhà sản xuất để biết cấu hình chân bù, bù trừ và chân kích hoạt. Hoàn hảo cho điều kiện tín hiệu và mạch khuếch đại.
Không có dữ liệu chân cụ thể sẵn có cho LM2902QDRG4Q1.
Tham khảo: tài liệu kỹ thuật cho cấu hình chân đầy đủ.
Ứng dụng tiêu biểu
LM2902QDRG4Q1 phù hợp cho 6 Áp dụngs: Automotive Sensor Signal Conditioning, Industrial Control Signal Conditioning, Precision Analog Measurement Front End, Actuator Drive Interface, Automotive Interface Circuit, Buffering and Distribution.
Automotive Sensor Signal Conditioning
The LM2902QDRG4Q1 fits low-frequency automotive sensor interfaces because it combines four general-purpose amplifier channels, a 1.2 MHz gain-bandwidth product, and operation from -40 °C to 125 °C. According to the manufacturer datasheet, the -Q1 device is AEC-Q100 compliant and provides enhanced manufacturing sourcing. Place the device between sensor outputs and higher-level control electronics, then check common-mode voltage, output swing, and supply limits against the datasheet. Its 0.5 V/µs slew rate is appropriate for moderate-bandwidth sensing signals, while four channels can condition more than one sensor or provide buffering within one 14-SOIC package.
Được đề xuất
Industrial Control Signal Conditioning
The LM2902QDRG4Q1 is suitable for industrial control paths that amplify or buffer low-bandwidth transducer signals before conversion or processing. Its 1.2 MHz gain-bandwidth product provides useful closed-loop bandwidth for moderate-frequency control signals, while 80 dB common-mode rejection reduces output errors from common-mode input variation. According to the manufacturer datasheet, four independent channels allow the same SOIC-14 footprint to implement noninverting stages, inverters, followers, or summed functions. Validate output swing at the intended supply and place supply bypassing close to the device. The extended -40 °C to 125 °C range also permits use in temperature-controlled industrial equipment.
Được đề xuất
Precision Analog Measurement Front End
The LM2902QDRG4Q1 can form the first amplification stage of a low-frequency analog measurement chain when the source impedance and required bandwidth are moderate. According to the manufacturer datasheet, its 80 dB common-mode rejection helps isolate small signals riding on a larger common-mode voltage, and its four channels can support buffering, differential conversion, gain, and reference conditioning. A 1.2 MHz gain-bandwidth product supports closed-loop operation below that limit at higher gains, although the exact bandwidth decreases as noise gain rises. Keep input and feedback layouts compact, avoid long high-impedance traces, and verify offset, bias-current, and common-mode limits against the manufacturer datasheet.
Được đề xuất
Actuator Drive Interface
The LM2902QDRG4Q1 is appropriate for low-frequency actuator interfaces where a control voltage must be buffered or translated into a drive command. Its 0.5 V/µs slew rate defines the available large-signal response, while the 1.2 MHz gain-bandwidth product supports substantially faster small-signal operation at low closed-loop gain. According to the manufacturer datasheet, the four-channel arrangement can buffer a command and condition feedback, reference, or monitoring signals within one package. Use a suitable output buffer when driving a capacitive or high-current load, because the output-current limit is not established in the available product listing. Check the output-voltage swing and load behavior in the manufacturer datasheet before finalizing the drive stage.
Được đề xuất
Automotive Interface Circuit
The LM2902QDRG4Q1 is designed for general-purpose automotive signal-interface tasks where four channels and a 14-SOIC footprint simplify board allocation. According to the manufacturer datasheet, it supports single-supply operation from 5 V, split-supply operation where permitted, and extended-temperature operation from -40 °C to 125 °C. The four channels can implement buffer, gain, comparison, and summing functions around low-bandwidth vehicle sensors or control signals. AEC-Q100 compliance supports automotive design review when the full ordering code and production requirements are accepted. Transient protection, grounding, and connector-level surge protection remain separate system requirements and should not be assumed to be provided by the amplifier itself.
Được đề xuất
Buffering and Distribution
The LM2902QDRG4Q1 works well when several low-frequency analog nodes need buffering or distribution without occupying four separate packages. According to the manufacturer datasheet, it contains four independent, high-gain, frequency-compensated operational amplifiers with a 1.2 MHz gain-bandwidth product. Voltage-follower connections reduce source-loading effects, while inverting and summing networks can distribute conditioned signals among downstream stages. The 0.5 V/µs slew rate is suitable for gradual control waveforms rather than high-speed edges. Keep each feedback loop compact and observe the stability guidance for capacitive loads in the manufacturer datasheet. A shared 14-SOIC footprint also simplifies pin assignment across repeated channels.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho LM2902QDRG4Q1 — 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 | LM2902QDRQ1 | LM2902DRG4 | LM2902KVQDRQ1 | LM2902QDRG4 | LM2902D |
|---|---|---|---|---|---|---|
| Package | 14-SOIC | 14-SOIC | 14-SOIC | 14-SOIC | 14-SOIC | 14-SOIC |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Number of Circuits | 4 | 4 | 4 | 4 | 4 | 4 |
| Amplifier Type | General Purpose | General Purpose | General Purpose | General Purpose | General Purpose | General Purpose |
Bảo phân biệt quan trọng
- Four general-purpose channels in one automotive-qualified package (vsLM2903DR)
- Extended automotive temperature capability (vsLM2902DRG4)
- Automotive sourcing and qualification position (vsLM2902D)
- Directly comparable 14-SOIC family alternative (vsLM2902QDRQ1)
Ghi chú thiết kế
Do not treat the 5 V supply specification as permission to bypass the complete operating range. According to the manufacturer datasheet, the LM2902-Q1 family supports single- and split-supply arrangements under specified conditions. Verify minimum supply, output swing, common-mode range, and channel-to-channel behavior at the actual rail voltage. The four channels share one package, so a supply-layout mistake can affect every amplifier simultaneously.
Place the supply-bypass capacitor immediately between the package supply pins and the ground reference. Keep input, feedback, and output traces short, especially when the source impedance is high. The 1.2 MHz gain-bandwidth product is sufficient for low-frequency conditioning but does not remove the need for disciplined analog layout. Follow the manufacturer datasheet’s recommended application circuit and decoupling guidance.
Estimate the required closed-loop bandwidth at the selected noise gain rather than using the 1.2 MHz gain-bandwidth product directly. The maximum operating frequency generally falls as closed-loop gain increases, and large signals are separately constrained by the 0.5 V/µs slew rate. For capacitive loads, use the stability guidance and isolation-resistor methods in the manufacturer datasheet rather than assuming the output can drive the load directly.
Estimate the power dissipation from the actual supply voltage, quiescent current, and load current before placing the device in a temperature-sensitive design. According to the manufacturer datasheet, the LM2902-Q1 family operates up to 125 °C, but ambient temperature and copper exposure still affect junction temperature. Use the package thermal information and the manufacturer’s maximum supply and current limits for the final thermal calculation.
Thông tin tuân thủ
The product listing identifies the LM2902QDRG4Q1 as AEC-Q100 compliant and RoHS compliant. Reach, lead-free, halogen-free, and conflict-minerals status are not stated in the cited product information.