Overview
The AD8662ARMZ is a rail-to-rail output, single-supply operational amplifier produced by Analog Devices Inc. This amplifier utilizes the patented DigiTrim® trimming technique to achieve low offset voltage, making it suitable for a wide range of applications. The AD8662 is part of the AD8661/AD8662/AD8664 series, known for its extended operating voltage range up to 16 V, low input bias current, and wide signal bandwidth.
Key Specifications
| Parameter | Symbol | Test Conditions/Comments | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Offset Voltage | VOS | VCM = VS/2 | 50 | 160 | 1000 | µV |
| Input Bias Current | IB | −40°C < TA < +85°C | 0.3 | 1 | 50 | pA |
| Input Offset Current | IOS | −40°C < TA < +85°C | 0.2 | 0.5 | 20 | pA |
| Input Voltage Range | −0.1 | +14.0 | V | |||
| Common-Mode Rejection Ratio | CMRR | VCM = −0.1 V to +14.0 V | 90 | 110 | dB | |
| Large Signal Voltage Gain | AVO | RL = 2 kΩ, VO = 0.5 V to 15.5 V | 200 | 360 | V/mV | |
| Output Voltage High | VOH | IL = 1 mA | 15.93 | 15.97 | V | |
| Output Voltage Low | VOL | IL = 1 mA | 24 | 50 | mV | |
| Short-Circuit Current | ISC | ±140 | mA | |||
| Power Supply Rejection Ratio | PSRR | VS = 5 V to 16 V | 95 | 110 | dB | |
| Supply Current per Amplifier | ISY | VO = VS/2 | 1.25 | 1.55 | 2.1 | mA |
Key Features
- Low Offset Voltage: Up to 100 µV maximum at VS = 5 V, achieved through the patented DigiTrim® trimming technique.
- Low Input Bias Current: 1 pA maximum, making it suitable for high impedance sensors.
- Single-Supply Operation: Supports supply voltages from 5 V to 16 V.
- Low Noise: 10 nV/√Hz, contributing to high signal integrity.
- Wide Bandwidth: 4 MHz, ensuring good dynamic performance.
- Unity-Gain Stable: Stable in unity-gain configurations.
- Small Package Options: Available in compact packages such as 8-lead SOIC and MSOP.
- High Common-Mode Rejection Ratio (CMRR): Up to 110 dB, enhancing the amplifier's ability to reject common-mode signals.
Applications
- High Impedance Sensors: Ideal for systems using photodiodes and other high impedance sensors due to its low input bias current and noise.
- Analog-to-Digital Converters (ADCs) and Digital-to-Analog Converters (DACs): Suitable for high-performance ADCs and DACs due to its wide operating voltage range.
- Audio Applications: Used in audio circuits where high input impedance, low voltage noise, and wide bandwidth are required.
- Medical Monitoring Equipment: Applicable in medical devices that demand low noise, high input impedance, and wide bandwidth.
Q & A
- What is the maximum offset voltage of the AD8662?
The maximum offset voltage of the AD8662 is 100 µV at VS = 5 V.
- What is the input bias current of the AD8662?
The input bias current of the AD8662 is 1 pA maximum.
- What is the supply voltage range for the AD8662?
The AD8662 operates with supply voltages from 5 V to 16 V.
- What is the bandwidth of the AD8662?
The bandwidth of the AD8662 is 4 MHz.
- Is the AD8662 unity-gain stable?
Yes, the AD8662 is unity-gain stable.
- What are the typical package options for the AD8662?
The AD8662 is available in packages such as 8-lead SOIC and MSOP.
- What is the common-mode rejection ratio (CMRR) of the AD8662?
The CMRR of the AD8662 is up to 110 dB.
- What is the short-circuit current of the AD8662?
The short-circuit current of the AD8662 is ±140 mA.
- What are some typical applications of the AD8662?
The AD8662 is used in applications involving high impedance sensors, ADCs, DACs, audio circuits, and medical monitoring equipment.
- What is the power supply rejection ratio (PSRR) of the AD8662?
The PSRR of the AD8662 is up to 110 dB.
