AD8627ARZ - Precision JFET Op Amp, Single Supply | Analog Devices
料号： AD8627ARZ ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $4.4 | $4.40 |
| 10 | $3.96 | $39.60 |
| 100 | $3.52 | $352.00 |
| 500 | $3.17 | $1,585.00 |
| 1,000 | $2.82 | $2,820.00 |
AD8627ARZ 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 amplification. The AD8627ARZ belongs to the precision JFET input amplifier family, which offers high input impedance and low input bias current, ideal for interfacing with high-impedance sensors such as photodiodes.
Key features of the AD8627ARZ include true single-supply operation, rail-to-rail output swing, low power consumption, and high capacitive load stability. The JFET input stage provides very low input bias current, minimizing errors in high-impedance applications. The amplifier also features low offset voltage and drift, ensuring accurate signal processing over temperature.
The AD8627ARZ is designed using Analog Devices' precision bipolar and JFET process, combining the benefits of low noise and high speed with low power. The output stage is rail-to-rail, allowing maximum dynamic range in single-supply systems. The device is stable with capacitive loads exceeding 500 pF, simplifying PCB layout and reducing the need for external compensation.
Typical applications include photodiode transimpedance amplification, ATE reference level drivers, battery management, and portable instrumentation. The low supply current and wide supply range make it ideal for battery-powered devices where power efficiency is critical. The rail-to-rail output ensures full-scale signal swing, maximizing ADC input range.
When designing with the AD8627ARZ, ensure proper decoupling of the power supply pins with 0.1 µF ceramic capacitors placed close to the device. The input common-mode range extends to the negative rail, but for best performance, keep inputs within the specified common-mode voltage range. The output can drive capacitive loads up to 500 pF without oscillation, but for larger loads, add a series resistor.
直接替换替代料： AD8627ARZ ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： AD8627ARZ （相同外形与封装尺寸） ——差异在于 Amplifier Type, Current - Supply, Package / Case, Slew Rate.
快速对比工具——选择替代料号进行并排对比：
AD8627ARZ-REEL
✅ 直接替换📋 参考替代料（不在目录中）
AD8627ARZ-REEL7
✅ 直接替换📋 参考替代料（不在目录中）
MCP6H81-E/MNY
✅ 直接替换📋 参考替代料（不在目录中）
MCP6H81T-E/MNY
✅ 直接替换📋 参考替代料（不在目录中）
AD8627ARZ 最大额定值与电气特性
| Amplifier Type | J-FET |
| Number of Circuits | 1 |
| 输出类型 | Rail-to-Rail |
| Current - Supply | 900 µA (max) |
| 封装 / 外壳 | 8-SOIC |
| 安装类型 | Surface Mount |
| RoHS 状态 | Compliant |
AD8627ARZ 引脚配置
| 引脚 1 | NC — No connect |
| 引脚 2 | -IN — Inverting input |
| 引脚 3 | +IN — Non-inverting input |
| 引脚 4 | V- — Negative supply |
| 引脚 5 | NC — No connect |
| 引脚 6 | OUT — Output |
| 引脚 7 | V+ — Positive supply |
| 引脚 8 | NC — No connect |
典型应用
AD8627ARZ 适用于 6 应用s: Photodiode Transimpedance Amplification, ATE Reference Level Drivers, Battery Management, Portable Instrumentation, Active Filters, Sensor Signal Conditioning.
Photodiode Transimpedance Amplification
The AD8627ARZ's JFET input provides ultra-low input bias current, essential for photodiode transimpedance amplifiers where leakage current causes offset errors. Its low supply current (900 µA) and rail-to-rail output enable battery-powered optical sensors. The amplifier's stability with capacitive loads up to 500 pF simplifies compensation, allowing direct connection to photodiodes with large parasitic capacitance. This makes it ideal for portable light meters, pulse oximeters, and industrial photodetectors.
推荐
ATE Reference Level Drivers
In automatic test equipment (ATE), the AD8627ARZ drives reference levels with high accuracy and low drift. Its rail-to-rail output ensures full-scale voltage swings, while the low offset voltage and JFET input minimize errors in precision measurements. The low supply current reduces thermal effects in dense ATE boards. The amplifier's stability with capacitive loads allows direct driving of long cables and capacitive loads without oscillation, ensuring reliable test signals.
推荐
Battery Management
The AD8627ARZ monitors battery voltage and current in battery management systems (BMS). Its low supply current (900 µA) is crucial for minimizing drain on the battery being monitored. The JFET input provides high impedance, preventing loading of the sense lines. Rail-to-rail output allows the amplifier to interface directly with ADCs in the BMS controller. The wide supply range accommodates varying battery voltages, making it suitable for portable electronics and electric vehicles.
推荐
Portable Instrumentation
In portable instruments like multimeters and data loggers, the AD8627ARZ provides precision signal conditioning with minimal power consumption. Its low supply current extends battery life, while the JFET input ensures accurate measurement of high-impedance signals. The rail-to-rail output maximizes dynamic range for ADC conversion. The small SOIC package and stability with capacitive loads make it easy to integrate into compact, battery-powered designs.
推荐
Active Filters
The AD8627ARZ is well-suited for active filter circuits in signal conditioning chains. Its low offset voltage and drift ensure accurate filter response, while the JFET input minimizes loading on preceding stages. The rail-to-rail output allows maximum signal swing, and the low supply current is beneficial in multi-stage filters. The amplifier's stability with capacitive loads simplifies filter design, as the output can directly drive the feedback network without stability issues.
推荐
Sensor Signal Conditioning
The AD8627ARZ conditions signals from various sensors, including temperature, pressure, and chemical sensors. Its JFET input provides high input impedance, preventing sensor loading. The low offset voltage and drift ensure accurate signal processing over temperature. The rail-to-rail output allows direct interface with ADCs, and the low supply current is ideal for battery-powered sensor nodes. The amplifier's stability with capacitive loads simplifies connection to sensors with long leads.
推荐
推荐产品汇总
工程参考数据： AD8627ARZ ——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 | AD8627ARZ-REEL | AD8627ARZ-REEL7 | MCP6H81-E/MNY |
|---|---|---|---|---|
| Package | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC |
| Brand | Analog Devices | Analog Devices | Analog Devices | Microchip Technology |
| Number of Circuits | 1 | 1 | 1 | 1 |
| Output Type | Rail-to-Rail | Rail-to-Rail | Rail-to-Rail | Rail-to-Rail |
| Input Type | JFET | JFET | JFET | JFET |
| RoHS | Compliant | Compliant | Compliant | Compliant |
关键差异点
- Low supply current of 900 µA （对比 MCP6H81-E/MNY)
- Stable with capacitive loads over 500 pF （对比 MCP6H81-E/MNY)
- True single-supply operation （对比 AD8628WARZ-RL)
设计说明
The AD8627ARZ operates with a supply current of less than 900 µA per amplifier. For battery-powered applications, this low quiescent current is beneficial, but ensure the power supply is well-regulated and decoupled with 0.1 µF ceramic capacitors close to the V+ and V- pins to prevent instability.
For optimal performance, place the AD8627ARZ away from high-frequency digital traces and use a ground plane to minimize noise pickup. The SOIC package has exposed thermal pad? No, standard SOIC-8 does not have exposed pad, but ensure adequate copper area for heat dissipation if operating at high supply voltages.
The AD8627ARZ has no-connect pins (pins 1, 5, 8) that are not internally connected. Do not connect these pins to ground or supply, as this may cause unexpected behavior. Verify the pinout before layout to avoid shorting these pins.
合规信息
RoHS compliance indicated by distributor listings. Other compliance data not specified in provided sources.
