ADA4817-1ARDZ - 1GHz FastFET Op Amp | Analog Devices
MPN： ADA4817-1ARDZ ✓ 啟用中ADA4817-1ARDZ 概覽
An operational amplifier (op amp) is a high-gain voltage amplifier with differential inputs and a single-ended output. It is a fundamental building block in analog electronics, used in signal conditioning, filtering, and amplification. The ADA4817-1ARDZ belongs to the FastFET amplifier family, which combines the high input impedance of FET inputs with the high speed of bipolar amplifiers, enabling it to buffer high-impedance sources without loading them.
Key features of the ADA4817-1ARDZ include a low input bias current of 2 pA, low input capacitance, and a high slew rate of 870 V/µs. The device also offers a 0.1% settling time of 9 ns, making it ideal for fast-settling applications such as data acquisition systems and ADC drivers. The unity-gain stability ensures reliable operation in buffer configurations without external compensation.
The ADA4817-1ARDZ is built on Analog Devices' proprietary eXtra fast complementary bipolar (XFCB) process, which enables its high bandwidth and low noise performance. The amplifier's low input bias current and low input capacitance make it suitable for photodiode amplifiers and other high-impedance sensor interfaces. The device operates over a wide supply voltage range, providing design flexibility.
Typical applications include high-speed data acquisition, medical instrumentation, and high-speed signal processing. The amplifier's high bandwidth and fast settling time make it suitable for driving high-speed ADCs, while its low input bias current is ideal for transimpedance amplifiers in optical receivers.
When designing with the ADA4817-1ARDZ, it is important to consider the thermal performance of the SOIC-EP package. The exposed pad should be soldered to a large copper area to ensure adequate heat dissipation. Additionally, proper decoupling of the power supply pins is essential to maintain high-frequency performance.
直接替換替代品，適用於 ADA4817-1ARDZ — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
ADA4817-1ARDZ-R7
✅ 直接替換📋 參考替代品（不在目錄中）
ADA4817-2ARDZ
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
OPA659
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
LMH6629
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
AD8000
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
ADA4817-1ARDZ 最大額定值與電氣特性
| Amplifier Type | Voltage Feedback |
| Number of Circuits | 1 |
| 輸出類型 | Single-ended |
| Slew Rate | 870 V/µs |
| -3 dB Bandwidth | 1050 MHz |
| Input Bias Current | 2 pA |
| 0.1% Settling Time | 9 ns |
| 封裝 | 8-SOIC-EP |
| 安裝類型 | Surface Mount |
| RoHS 狀態 | Compliant |
| Unity-Gain Stable | Yes |
| FET Input | Yes |
ADA4817-1ARDZ 腳位配置
| 腳位 1 | OUT — Amplifier output |
| 腳位 2 | -IN — Inverting input |
| 腳位 3 | +IN — Non-inverting input |
| 腳位 4 | V- — Negative supply |
| 腳位 5 | NC — No connect |
| 腳位 6 | NC — No connect |
| 腳位 7 | V+ — Positive supply |
| 腳位 8 | NC — No connect |
| 腳位 9 | EP — Exposed pad (thermal) |
典型應用
ADA4817-1ARDZ 適用於 6 應用s: High-Speed Data Acquisition, Medical Instrumentation, High-Speed Signal Processing, Photodiode Amplifier, ADC Driver, Video Amplification.
High-Speed Data Acquisition
The ADA4817-1ARDZ's 1050 MHz bandwidth and 9 ns settling time make it ideal for driving high-speed ADCs in data acquisition systems. Its low input bias current minimizes errors when interfacing with high-impedance sensors, ensuring accurate signal capture. The amplifier's fast slew rate preserves signal integrity for large amplitude inputs, while its unity-gain stability simplifies buffer configurations. In a typical setup, the ADA4817-1ARDZ is placed between a sensor and an ADC, providing the necessary gain and buffering without introducing significant noise or distortion.
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Medical Instrumentation
In medical instrumentation, the ADA4817-1ARDZ is used in ultrasound imaging and MRI systems where high-speed signal processing is required. Its low input bias current of 2 pA is crucial for amplifying signals from high-impedance transducers without loading them. The amplifier's high bandwidth ensures that fast transient signals are accurately reproduced, which is essential for diagnostic imaging. The device's small SOIC-EP package allows for compact designs in portable medical devices, while its low noise performance maintains signal fidelity in sensitive measurements.
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High-Speed Signal Processing
The ADA4817-1ARDZ excels in high-speed signal processing applications such as radar, communications, and test equipment. Its 1050 MHz bandwidth and 870 V/µs slew rate enable it to handle wideband signals with minimal distortion. The amplifier's FET inputs provide high input impedance, making it suitable for buffering high-frequency sources without loading. In radar receivers, the ADA4817-1ARDZ can be used in the IF stage to amplify signals before digitization, ensuring that fast pulses are captured accurately. Its fast settling time also makes it ideal for sample-and-hold circuits.
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Photodiode Amplifier
The ADA4817-1ARDZ is well-suited for photodiode amplifier circuits due to its low input bias current of 2 pA and high bandwidth. In optical receivers, the amplifier converts the photodiode current into a voltage with high speed and accuracy. The low input capacitance minimizes the effect of the photodiode's capacitance on the bandwidth, allowing for high-speed operation. The amplifier's low noise performance ensures that weak optical signals are not buried in noise. A typical transimpedance amplifier configuration uses the ADA4817-1ARDZ with a feedback resistor to set the gain, achieving high sensitivity and fast response.
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ADC Driver
The ADA4817-1ARDZ is an excellent choice for driving high-speed ADCs, such as the AD9680, due to its fast settling time and low distortion. In ADC driver circuits, the amplifier provides the necessary gain and buffering to match the ADC's input range while maintaining signal integrity. Its high bandwidth ensures that the ADC's Nyquist frequency is well within the amplifier's passband, preventing signal attenuation. The low input bias current reduces DC errors, and the unity-gain stability allows for simple buffer configurations. The amplifier's low output impedance drives the ADC's capacitive load without significant degradation.
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Video Amplification
The ADA4817-1ARDZ's 1050 MHz bandwidth makes it suitable for video amplification in broadcast and professional video equipment. It can buffer and amplify composite video signals with minimal distortion, preserving the signal's amplitude and phase. The amplifier's high slew rate ensures that fast video transitions are reproduced accurately, preventing smearing. Its low input bias current is beneficial when interfacing with high-impedance video sources. In a typical video distribution amplifier, the ADA4817-1ARDZ provides the necessary gain to drive multiple loads, maintaining signal quality over long cable runs.
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推薦產品摘要
工程參考資料，適用於 ADA4817-1ARDZ — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | ADA4817-1ARDZ-R7 | ADA4817-2ARDZ | OPA659 |
|---|---|---|---|---|
| Package | 8-SOIC-EP | 8-SOIC-EP | 8-SOIC-EP | 8-SOIC-EP |
| Brand | Analog Devices | Analog Devices | Analog Devices | Texas Instruments |
| Number of Circuits | 1 | 1 | 2 | 1 |
| Bandwidth | 1050 MHz | 1050 MHz | 1050 MHz | 650 MHz |
| Slew Rate | 870 V/µs | 870 V/µs | 870 V/µs | 2550 V/µs |
| Input Bias Current | 2 pA | 2 pA | 2 pA | 2 pA |
| Unity-Gain Stable | Yes | Yes | Yes | Yes |
主要差異化特點
- Higher bandwidth than OPA659 (對比OPA659)
- Lower input bias current than AD8000 (對比AD8000)
- Single version with lower cost than dual (對比ADA4817-2ARDZ)
設計說明
For optimal high-frequency performance, place the ADA4817-1ARDZ close to the signal source and ADC. Use a solid ground plane and minimize trace lengths. The exposed pad (EP) should be soldered to a large copper area to enhance thermal dissipation and reduce parasitic inductance.
Decouple the power supply pins with 0.1 µF and 10 µF capacitors placed as close as possible to the V+ and V- pins. This ensures stable operation at high frequencies and reduces power supply noise. Consider using ferrite beads for additional isolation in noisy environments.
Avoid exceeding the absolute maximum supply voltage and ensure the input common-mode voltage stays within the specified range. The FET inputs are sensitive to electrostatic discharge, so proper ESD protection is essential. Also, verify that the output load capacitance does not cause instability; use a small series resistor if driving capacitive loads.
合規資訊
RoHS compliant per Analog Devices product page. No AEC-Q100 qualification for this part.
