Overview
The AD8657ARMZ-RL is a dual micropower, precision, rail-to-rail input/output operational amplifier produced by Analog Devices Inc. This amplifier is optimized for low power consumption and operates over a wide range of supply voltages, making it suitable for various precision analog applications. The AD8657 is part of the AD8657/AD8659 family, which includes dual and quad configurations, respectively.
Key Specifications
| Parameter | Symbol | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Offset Voltage | VOS | VCM = 0 V to 5 V | 0.6 | 2.5 | 3.2 | mV |
| Offset Voltage Drift | ΔVOS/ΔT | −40°C < TA < +125°C | 1.8 | 7.5 | μV/°C | |
| Input Bias Current | IB | −40°C < TA < +85°C | 0.3 | 1 | 50 | pA |
| Input Offset Current | IOS | −40°C < TA < +85°C | 0.1 | 0.5 | 50 | pA |
| Input Voltage Range | VCM | 0 | 5 | V | ||
| Common-Mode Rejection Ratio | CMRR | VCM = 0 V to 5 V | 67 | 84 | dB | |
| Large Signal Voltage Gain | AVO | RL = 2 kΩ, VO = 0.5 V to 4.5 V | 104 | 116 | dB | |
| Output Voltage High | VOH | IOUT = 1 mA | 4.98 | 4.99 | 4.90 | V |
| Output Voltage Low | VOL | IOUT = 1 mA | 8.4 | 20 | 40 | mV |
| Slew Rate | SR | RL = 2 kΩ | 0.07 | V/μs | ||
| Gain Bandwidth Product | GBP | 200 | kHz | |||
| Supply Current per Amplifier | ISY | 1.5 | 2.0 | 2.5 | mA |
Key Features
- Rail-to-Rail Input and Output: The AD8657 can swing rail-to-rail at both the input and output, enabling it to buffer CMOS ADCs, DACs, ASICs, and other wide output swing devices in single-supply applications.
- Low Power Consumption: The amplifier is designed for micropower operation, making it suitable for battery-powered and power-sensitive applications.
- Wide Operating Supply Voltage Range: The AD8657 operates over a supply voltage range of 2.7 V to 5.5 V, providing flexibility in various system designs.
- Precision Performance: The amplifier features low offset voltage, low offset voltage drift, and high common-mode rejection ratio, ensuring high precision in analog signal processing.
- Low Slew Rate and Gain Bandwidth Product: With a slew rate of 0.07 V/μs and a gain bandwidth product of 200 kHz, the AD8657 is optimized for low-frequency precision applications.
Applications
- Precision Analog Signal Processing: The AD8657 is ideal for applications requiring high precision and low noise, such as in medical devices, industrial control systems, and scientific instruments.
- Buffering and Amplification: It can be used to buffer the outputs of CMOS ADCs, DACs, and other wide output swing devices in single-supply configurations.
- Battery-Powered Devices: The low power consumption of the AD8657 makes it suitable for battery-powered devices where power efficiency is critical.
- Automotive and Aerospace Systems: The amplifier's ability to operate over a wide temperature range and its robust performance make it a good choice for automotive and aerospace applications.
Q & A
- What is the part number of the dual micropower operational amplifier from Analog Devices Inc.?
The part number is AD8657ARMZ-RL.
- What is the typical supply current per amplifier for the AD8657?
The typical supply current per amplifier is 2.0 mA.
- What is the slew rate of the AD8657?
The slew rate of the AD8657 is 0.07 V/μs.
- What is the gain bandwidth product of the AD8657?
The gain bandwidth product of the AD8657 is 200 kHz.
- What is the common-mode rejection ratio (CMRR) of the AD8657?
The CMRR of the AD8657 is typically 84 dB.
- What is the input voltage range for the AD8657?
The input voltage range for the AD8657 is from 0 V to 5 V.
- Can the AD8657 operate in single-supply configurations?
Yes, the AD8657 can operate in single-supply configurations and is capable of rail-to-rail input and output.
- What are some typical applications for the AD8657?
Typical applications include precision analog signal processing, buffering and amplification, battery-powered devices, and automotive and aerospace systems.
- What is the operating temperature range for the AD8657?
The operating temperature range for the AD8657 is from −40°C to +125°C.
- How many amplifiers are included in the AD8657?
The AD8657 includes two amplifiers.
