Overview
The AD8661ARZ-REEL 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. It operates with supply voltages from 5 V to 16 V, offering low input bias current, wide signal bandwidth, and low noise characteristics. The AD8661 is particularly useful in systems requiring high precision and low noise, such as those involving high impedance sensors, analog-to-digital converters (ADCs), digital-to-analog converters (DACs), audio applications, and medical monitoring equipment.
Key Specifications
| Parameter | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Offset Voltage | VOS | 50 | 160 | 1000 | µV |
| Input Bias Current | IB | 0.3 | 1 | 50 | pA |
| Input Offset Current | IOS | 0.2 | 0.5 | 20 | pA |
| Input Voltage Range | -0.1 | +14.0 | V | ||
| Common-Mode Rejection Ratio | CMRR | 90 | 110 | dB | |
| Large Signal Voltage Gain | AVO | 200 | 360 | V/mV | |
| Output Voltage High | VOH | 15.93 | 15.97 | V | |
| Output Voltage Low | VOL | 24 | 50 | mV | |
| Short-Circuit Current | ISC | ±140 | mA | ||
| Power Supply Rejection Ratio | PSRR | 95 | 110 | dB | |
| Supply Current per Amplifier | ISY | 1.25 | 1.55 | mA |
Key Features
- Low offset voltage: 100 µV maximum at VS = 5 V
- Low input bias current: 1 pA maximum
- Single-supply operation: 5 V to 16 V
- Low noise: 10 nV/√Hz
- Wide bandwidth: 4 MHz
- Unity-gain stable
- Small package options, including 8-lead SOIC
- High input impedance, low voltage, and low current noise
Applications
- Systems using high impedance sensors, such as photodiodes
- Analog-to-digital converters (ADCs) and digital-to-analog converters (DACs)
- Audio applications
- Medical monitoring equipment
- High performance analog circuits requiring low noise and high precision
Q & A
- What is the typical offset voltage of the AD8661ARZ-REEL?
The typical offset voltage is 160 µV at VS = 5 V.
- What is the input bias current of the AD8661ARZ-REEL?
The input bias current is 1 pA maximum.
- What is the operating supply voltage range for the AD8661ARZ-REEL?
The operating supply voltage range is from 5 V to 16 V.
- What is the noise performance of the AD8661ARZ-REEL?
The noise performance is 10 nV/√Hz.
- Is the AD8661ARZ-REEL unity-gain stable?
- What are the common package options for the AD8661ARZ-REEL?
The AD8661ARZ-REEL is available in an 8-lead SOIC package.
- What are some typical applications for the AD8661ARZ-REEL?
Typical applications include systems with high impedance sensors, ADCs, DACs, audio applications, and medical monitoring equipment.
- What is the short-circuit current of the AD8661ARZ-REEL?
The short-circuit current is ±140 mA.
- What is the power supply rejection ratio (PSRR) of the AD8661ARZ-REEL?
The PSRR is 95 dB to 110 dB.
- What is the supply current per amplifier for the AD8661ARZ-REEL?
The supply current per amplifier is 1.25 mA to 1.55 mA.
