AD8605ARZ-REEL7 - Precision CMOS RRIO Op Amp | Analog Devices
料号： AD8605ARZ-REEL7 ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $1.52 | $1.52 |
| 10 | $1.36 | $13.60 |
| 100 | $1.09 | $109.00 |
| 500 | $0.92 | $460.00 |
| 1,000 | $0.78 | $780.00 |
AD8605ARZ-REEL7 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 circuits. The AD8605 belongs to the class of CMOS rail-to-rail op amps, which are characterized by their ability to handle input and output signals that swing close to the supply rails. This makes them particularly useful in single-supply systems where the available voltage headroom is limited. Within the hierarchy of amplifiers, the AD8605 is a precision op amp, distinguished by its low offset voltage and low noise, making it suitable for high-accuracy applications.
Key features of the AD8605ARZ-REEL7 include its rail-to-rail input and output capability, which maximizes dynamic range in low-voltage applications. The low offset voltage of 65 µV (typical) and low input bias current of 1 pA (typical) ensure high precision in sensor interface and instrumentation circuits. The wide signal bandwidth of 10 MHz (typical) and slew rate of 5 V/µs (typical) allow it to handle moderate-speed signals. Additionally, the op amp features a low quiescent current of 1.3 mA (typical), which is beneficial for power-sensitive designs.
Technically, the AD8605 uses Analog Devices' DigiTrim technology, which provides precision trimming of the offset voltage without the need for external components. This results in a very low offset voltage that is stable over temperature. The CMOS input stage provides extremely high input impedance, minimizing loading on the signal source. The output stage is rail-to-rail, capable of driving loads down to 600 Ω, making it versatile for various applications.
Typical applications for the AD8605ARZ-REEL7 include photodiode amplification, battery-powered instrumentation, active filters, and portable medical devices. Its low noise and low offset make it ideal for precision signal conditioning, while its rail-to-rail operation allows it to interface directly with ADCs and DACs in single-supply systems.
When designing with the AD8605, it is important to provide adequate power supply decoupling with 0.1 µF ceramic capacitors placed close to the supply pins. Additionally, for optimal performance, keep the input traces short and shielded to minimize noise pickup.
直接替换替代料： AD8605ARZ-REEL7 ——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： AD8605ARZ-REEL7 （相同外形与封装尺寸） ——差异在于 Gain Bandwidth Product, Amplifier Type, Input Bias Current, Input Voltage Noise Density, Package.
快速对比工具——选择替代料号进行并排对比：
AD8605ARZ
✅ 直接替换✓ 有现货
$1.79 / 个
查看数据手册 →AD8606ARZ
⚡ 相同封装✓ 有现货
$1.3 / 个
查看数据手册 →OPA376AIDR
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
MCP6V11-E/SN
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
AD8605ARZ-REEL7 最大额定值与电气特性
| Number of Channels | 1 |
| Supply Voltage Range | 2.7 V to 5.5 V |
| Input Offset Voltage | 65 µV (typical) |
| Input Bias Current | 1 pA (typical) |
| Input Voltage Noise Density | 7 nV/√Hz (typical) |
| Gain Bandwidth Product | 10 MHz (typical) |
| Slew Rate | 5 V/µs (typical) |
| 静态电流 | 1.3 mA (typical) |
| Rail-to-Rail Input | Yes |
| Rail-to-Rail Output | Yes |
| Output Current | 50 mA (typical) |
| 工作温度范围 | -40°C to +125°C |
| 封装 | 8-Lead SOIC (N) |
| 安装类型 | Surface Mount |
| RoHS 状态 | Compliant |
AD8605ARZ-REEL7 引脚配置
| 引脚 1 | OUT — Output |
| 引脚 2 | -IN — Inverting input |
| 引脚 3 | +IN — Non-inverting input |
| 引脚 4 | V- — Negative supply (ground in single-supply) |
| 引脚 5 | NC — No connect |
| 引脚 6 | NC — No connect |
| 引脚 7 | NC — No connect |
| 引脚 8 | V+ — Positive supply |
典型应用
AD8605ARZ-REEL7 适用于 6 应用s: Photodiode Amplifier, Battery-Powered Instrumentation, Active Filters, Portable Medical Devices, Audio Preamplifier, Sensor Signal Conditioning.
Photodiode Amplifier
The AD8605ARZ-REEL7 is ideal for photodiode amplification due to its low input bias current (1 pA) and low noise (7 nV/√Hz). In a transimpedance amplifier configuration, the op amp converts the photodiode current to a voltage with high precision. The rail-to-rail output allows direct interfacing with ADCs. The low offset voltage ensures accurate signal detection even at low light levels. The wide bandwidth of 10 MHz supports high-speed optical communication systems.
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Battery-Powered Instrumentation
The AD8605ARZ-REEL7 operates from 2.7V to 5.5V, making it suitable for battery-powered instruments. Its low quiescent current of 1.3 mA extends battery life. The rail-to-rail input and output maximize dynamic range in low-voltage systems. The low offset and noise ensure accurate measurements in portable data acquisition systems. The op amp can be used in signal conditioning for sensors such as temperature and pressure sensors.
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Active Filters
The AD8605ARZ-REEL7 is well-suited for active filter designs due to its wide bandwidth (10 MHz) and low noise. It can be used in low-pass, high-pass, and band-pass filters for audio and communication systems. The rail-to-rail output allows the filter to drive ADCs directly. The low offset voltage minimizes DC errors in the filter response. The op amp's stability with capacitive loads makes it easy to implement in various filter topologies.
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Portable Medical Devices
The AD8605ARZ-REEL7 is suitable for portable medical devices such as glucose monitors and pulse oximeters. Its low power consumption and low noise are critical for battery-operated medical equipment. The rail-to-rail operation allows direct interfacing with low-voltage ADCs. The high precision ensures accurate readings in diagnostic applications. The op amp's small SOIC-8 package is ideal for compact medical devices.
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Audio Preamplifier
The AD8605ARZ-REEL7 can be used as an audio preamplifier due to its low noise (7 nV/√Hz) and wide bandwidth (10 MHz). It provides clean amplification for microphones and other audio sources. The rail-to-rail output allows it to drive headphone amplifiers directly. The low distortion and high slew rate ensure faithful reproduction of audio signals. The op amp's low power consumption is beneficial for portable audio devices.
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Sensor Signal Conditioning
The AD8605ARZ-REEL7 is ideal for sensor signal conditioning due to its low offset voltage and low noise. It can amplify small signals from sensors such as thermocouples, strain gauges, and RTDs. The rail-to-rail input allows it to handle signals near the supply rails. The low input bias current minimizes errors in high-impedance sensor circuits. The op amp's wide bandwidth supports dynamic sensor measurements.
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推荐产品汇总
工程参考数据： AD8605ARZ-REEL7 ——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 | AD8605ARZ | AD8605ARTZ-REEL7 | OPA376AIDR |
|---|---|---|---|---|
| Package | 8-Lead SOIC (N) | 8-Lead SOIC (N) | 5-Lead SOT-23 | 8-Lead SOIC (N) |
| Brand | Analog Devices | Analog Devices | Analog Devices | Texas Instruments |
| Supply Voltage Range | 2.7V to 5.5V | 2.7V to 5.5V | 2.7V to 5.5V | 2.2V to 5.5V |
| Input Offset Voltage | 65 µV (typical) | 65 µV (typical) | 65 µV (typical) | 25 µV (typical) |
| Input Bias Current | 1 pA (typical) | 1 pA (typical) | 1 pA (typical) | 0.2 pA (typical) |
| Gain Bandwidth Product | 10 MHz | 10 MHz | 10 MHz | 5.5 MHz |
| Quiescent Current | 1.3 mA (typical) | 1.3 mA (typical) | 1.3 mA (typical) | 0.95 mA (typical) |
| Rail-to-Rail | Yes | Yes | Yes | Yes |
关键差异点
- Low input bias current of 1 pA （对比 OPA376AIDR)
- Wide bandwidth of 10 MHz （对比 OPA376AIDR)
- DigiTrim technology for low offset （对比 MCP6V11-E/SN)
设计说明
The AD8605ARZ-REEL7 operates from 2.7V to 5.5V. For optimal performance, use a clean power supply with adequate decoupling. Place a 0.1 µF ceramic capacitor close to the V+ pin and a 10 µF tantalum capacitor for lower frequency decoupling. In single-supply applications, ensure the ground connection is solid to avoid noise.
For best noise performance, keep the input traces short and shielded. Use a ground plane to minimize noise pickup. Place the feedback resistor and capacitor close to the inverting input to reduce parasitic capacitance. Avoid routing high-speed digital traces near the input pins.
Do not exceed the absolute maximum supply voltage of 6V. Ensure the input voltages do not exceed the supply rails by more than 0.3V to avoid latch-up. The output can drive capacitive loads up to 100 pF without oscillation, but for larger loads, add a series resistor to isolate the output.
合规信息
RoHS compliant per Analog Devices product page. Not AEC-Q100 qualified.
