OP42AZ/883 - Fast Precision JFET Op Amp | Analog Devices
料号： OP42AZ/883 ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $12.5 | $12.50 |
| 10 | $11.2 | $112.00 |
| 100 | $9.8 | $980.00 |
| 500 | $8.5 | $4,250.00 |
| 1,000 | $7.9 | $7,900.00 |
OP42AZ/883 概述
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 instrumentation. The OP42AZ/883 belongs to the family of precision op amps, which prioritize accuracy and stability over raw speed, making them suitable for high-performance analog signal processing.
Key features of the OP42AZ/883 include a 10 MHz gain-bandwidth product, a 58 V/µs slew rate, and a supply current of less than 6 mA. It offers a common-mode rejection ratio (CMRR) of 94 dB and a minimum voltage gain of 80,000, ensuring excellent accuracy in precision applications. The JFET input stage provides high input impedance and low input bias current, typically 80 pA, which is critical for high-impedance sensor interfaces.
The OP42AZ/883 is internally compensated for unity-gain operation, simplifying design and ensuring stability without external components. Its fast settling time and low distortion make it ideal for data acquisition systems, active filters, and precision instrumentation. The device operates from dual supplies up to ±18 V, providing flexibility in various circuit configurations.
Typical applications include high-speed data acquisition, precision analog-to-digital converter (ADC) drivers, and active filters in communication systems. The OP42AZ/883's military-grade temperature rating and hermetic package make it suitable for aerospace and defense applications where reliability is paramount.
When designing with the OP42AZ/883, ensure proper decoupling of the power supply pins with 0.1 µF ceramic capacitors placed close to the device. The high slew rate can cause ringing if the output load is capacitive; a small series resistor may be needed to maintain stability.
直接替换替代料： OP42AZ/883 ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
快速对比工具——选择替代料号进行并排对比：
OP42AZ/883C
✅ 直接替换📋 参考替代料（不在目录中）
OP42EZ
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
OP42GPZ
✅ 直接替换📋 参考替代料（不在目录中）
OP17AZ
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
AD797ARZ
⚡ 相同封装 ⚠️ 规格未核验📋 参考替代料（不在目录中）
OP42AZ/883 最大额定值与电气特性
| Amplifier Type | J-FET |
| Number of Circuits | 1 |
| Slew Rate | 58 V/µs |
| Gain Bandwidth Product | 10 MHz |
| Input Bias Current | 80 pA |
| Input Offset Voltage | 300 µV |
| Common Mode Rejection Ratio | 94 dB |
| Voltage Gain | 80,000 V/V |
| Supply Voltage Range | ±4.5 V to ±18 V |
| 电源电流 | 6 mA |
| 工作温度范围 | -55°C to +125°C |
| Package Type | 8-CERDIP |
| 安装类型 | Through-Hole |
| RoHS 状态 | Non-Compliant |
| Military Grade | Yes (883) |
OP42AZ/883 引脚配置
| 引脚 1 | OFFSET N1 — Offset null input 1 |
| 引脚 2 | IN- — Inverting input |
| 引脚 3 | IN+ — Non-inverting input |
| 引脚 4 | V- — Negative supply |
| 引脚 5 | OFFSET N2 — Offset null input 2 |
| 引脚 6 | OUT — Output |
| 引脚 7 | V+ — Positive supply |
| 引脚 8 | NC — No connection |
典型应用
OP42AZ/883 适用于 6 应用s: High-Speed Data Acquisition, Precision Instrumentation, Active Filters, Aerospace and Defense, Medical Instrumentation, Test and Measurement.
High-Speed Data Acquisition
The OP42AZ/883's 58 V/µs slew rate and 10 MHz bandwidth make it ideal for driving high-speed ADCs in data acquisition systems. Its fast settling time ensures accurate conversion of high-frequency signals, while the JFET input minimizes loading on sensors. In a typical ADC driver circuit, the op amp buffers the sensor output and provides gain, maintaining signal integrity up to several megahertz. The low input bias current of 80 pA is crucial for high-impedance sources, reducing offset errors. For optimal performance, use a 0.1 µF decoupling capacitor on each supply pin and a small series resistor (e.g., 50 Ω) at the output to isolate capacitive loads.
推荐
Precision Instrumentation
In precision instrumentation, the OP42AZ/883 provides high accuracy with 94 dB CMRR and 80,000 voltage gain. It is used in strain gauge amplifiers, thermocouple conditioners, and precision voltage references. The low offset voltage of 300 µV and low drift ensure accurate measurements over temperature. The military temperature range (-55°C to +125°C) allows deployment in harsh environments. For bridge circuits, the op amp's high input impedance prevents loading, and its low noise contributes to high resolution. Designers should use precision resistors (0.1% tolerance) in the feedback network to maintain overall accuracy.
推荐
Active Filters
The OP42AZ/883 is well-suited for active filter designs, such as Butterworth or Chebyshev low-pass filters, due to its 10 MHz gain-bandwidth product and high slew rate. It can implement filters with cutoff frequencies up to 1 MHz while maintaining stability. The JFET input provides high input impedance, allowing the use of high-value resistors without offset errors. In a Sallen-Key topology, the op amp's low output impedance drives the RC network effectively. For high-Q filters, ensure adequate phase margin by selecting appropriate component values. The device's low distortion ensures clean signal processing in communication systems.
推荐
Aerospace and Defense
The OP42AZ/883 is designed for military and aerospace applications, with a hermetic CERDIP package and full -55°C to +125°C operation. It is used in avionics signal conditioning, radar receivers, and guidance systems. The high slew rate and bandwidth support fast signal processing, while the low bias current ensures accuracy in sensor interfaces. The device's reliability in extreme conditions is critical for mission-critical systems. For space applications, additional radiation hardening may be required, but the OP42AZ/883 provides a solid baseline. Designers should follow military standards for derating and screening.
推荐
Medical Instrumentation
In medical devices, the OP42AZ/883 is used in ECG, EEG, and patient monitoring systems where precision and low noise are essential. Its high CMRR rejects common-mode interference from the body, and the low input bias current minimizes electrode polarization. The wide temperature range allows use in sterilization environments. The op amp's fast settling is beneficial for pulsed signals in defibrillators. For safety, ensure proper isolation and compliance with medical standards (IEC 60601). The device's low power consumption (6 mA) is acceptable for battery-powered portable monitors.
推荐
Test and Measurement
The OP42AZ/883 is a key component in test equipment such as oscilloscopes, spectrum analyzers, and signal generators. Its high slew rate and bandwidth enable accurate reproduction of fast waveforms, while the low distortion ensures signal fidelity. In a function generator, the op amp can drive the output stage with minimal settling time. The device's precision characteristics make it suitable for calibration instruments. For high-frequency measurements, use proper PCB layout with ground planes and short traces to minimize parasitic capacitance. The military temperature rating allows use in field-deployed test equipment.
推荐
推荐产品汇总
工程参考数据： OP42AZ/883 ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | OP42AZ/883C | OP42EZ | OP42GPZ |
|---|---|---|---|---|
| Package | 8-CERDIP | 8-CERDIP | 8-CERDIP | 8-PDIP |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Slew Rate | 58 V/µs | 58 V/µs | 58 V/µs | 58 V/µs |
| Gain Bandwidth Product | 10 MHz | 10 MHz | 10 MHz | 10 MHz |
| Input Bias Current | 80 pA | 80 pA | 80 pA | 80 pA |
| CMRR | 94 dB | 94 dB | 94 dB | 94 dB |
| Operating Temperature | -55°C to +125°C | -55°C to +125°C | 0°C to +70°C | 0°C to +70°C |
| RoHS | Non-Compliant | Compliant | Non-Compliant | Compliant |
关键差异点
- Military temperature range and hermetic package （对比 OP42GPZ)
- RoHS compliance （对比 OP42AZ/883)
- Higher slew rate than OP17 （对比 OP17AZ)
设计说明
The OP42AZ/883 operates from dual supplies up to ±18V. Use 0.1 µF ceramic capacitors close to the V+ and V- pins to decouple high-frequency noise. For optimal performance, add 10 µF tantalum capacitors in parallel for bulk decoupling, especially when driving heavy loads.
For high-speed operation, use a ground plane and keep traces short to minimize parasitic inductance and capacitance. Place the feedback resistor close to the inverting input to reduce stray capacitance. Avoid routing high-impedance inputs near noisy digital lines.
The high slew rate can cause ringing when driving capacitive loads. Add a small series resistor (e.g., 50 Ω) at the output to isolate the capacitance. Also, ensure the input common-mode voltage does not exceed the supply rails to prevent latch-up.
合规信息
Military-grade part with lead-based solder, not RoHS compliant. The 'C' suffix version (OP42AZ/883C) is RoHS compliant.
