Overview
The AD8608AR is a quad rail-to-rail input and output, single-supply operational amplifier produced by Analog Devices Inc. This amplifier is part of the AD8605, AD8606, and AD8608 family, known for their low offset voltage, low noise, and wide signal bandwidth. The AD8608AR utilizes Analog Devices' patented DigiTrim® trimming technique, which ensures superior precision without the need for laser trimming. It operates over a single supply range of 2.7 V to 5.5 V and is specified over the extended industrial temperature range of −40°C to +125°C.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Offset Voltage (VOS) | VS = 3.5 V, VCM = 2.7 V | 20 | 75 | 300 | µV |
| Input Bias Current (IB) | −40°C < TA < +125°C | 0.2 | 1 | 300 | pA |
| Input Offset Current (IOS) | −40°C < TA < +125°C | 0.1 | 0.5 | 75 | pA |
| Common-Mode Rejection Ratio (CMRR) | VCM = 0 V to 2.7 V | 80 | 95 | 95 | dB |
| Large Signal Voltage Gain (AVO) | RL = 2 kΩ, VO = 0.5 V to 2.2 V | 110 | 350 | 350 | V/mV |
| Output Voltage High (VOH) | IL = 1 mA | 4.96 | 4.98 | 4.98 | V |
| Output Voltage Low (VOL) | IL = 1 mA | 20 | 40 | 40 | mV |
| Supply Current/Amplifier (ISY) | IOUT = 0 mA | 1.15 | 1.4 | 1.4 | mA |
Key Features
- Low offset voltage: up to 75 µV maximum
- Low input bias currents: up to 1 pA maximum
- Low noise: 8 nV/√Hz at 1 kHz
- Wide bandwidth: 10 MHz
- High open-loop gain: up to 1000 V/mV
- Unity gain stable
- Single-supply operation: 2.7 V to 5.5 V
- High common-mode rejection ratio (CMRR): up to 95 dB
- Low distortion and no phase reversal
- Patented DigiTrim® trimming technique for superior precision
Applications
- Photodiode amplification
- Battery-powered instrumentation
- Multipole filters
- Sensors and high impedance sensors
- Barcode scanners
- Audio amplification for portable devices
- Optical control loops
- Portable and loop-powered instrumentation
Q & A
- What is the operating voltage range of the AD8608AR?
The AD8608AR operates over a single supply range of 2.7 V to 5.5 V.
- What is the maximum offset voltage of the AD8608AR?
The maximum offset voltage is up to 75 µV.
- What is the input bias current of the AD8608AR?
The input bias current is up to 1 pA maximum.
- What is the bandwidth of the AD8608AR?
The bandwidth is up to 10 MHz.
- Is the AD8608AR unity gain stable?
- What is the common-mode rejection ratio (CMRR) of the AD8608AR?
The CMRR is up to 95 dB.
- What are the typical applications of the AD8608AR?
The AD8608AR is used in photodiode amplification, battery-powered instrumentation, multipole filters, sensors, barcode scanners, audio amplification, and optical control loops.
- What is the temperature range for the AD8608AR?
The AD8608AR is specified over the extended industrial temperature range of −40°C to +125°C.
- What is the supply current per amplifier for the AD8608AR?
The supply current per amplifier is typically 1.15 mA to 1.4 mA.
- Does the AD8608AR use any special trimming technique?
