Overview
The AD8604AR, produced by Analog Devices Inc., is a quad rail-to-rail input and output, single-supply operational amplifier. It is part of the AD8601/AD8602/AD8604 family, known for its precision CMOS design. This amplifier operates from a single supply voltage ranging from 2.7 V to 5.5 V, making it suitable for a variety of applications, including battery-powered instrumentation and automotive systems. The AD8604AR features very low offset voltage, low input bias currents, and wide signal bandwidth, making it an excellent choice for applications requiring high precision and low noise.
Key Specifications
| Parameter | Typical Value | Maximum Value | Conditions |
|---|---|---|---|
| Offset Voltage (VOS) | 80 µV | 600 µV | VCM = 0 V to 1.3 V, -40°C ≤ TA ≤ +85°C |
| Input Bias Current (IB) | 0.2 pA | 60 pA | -40°C ≤ TA ≤ +85°C |
| Input Offset Current (IOS) | 0.1 pA | 30 pA | -40°C ≤ TA ≤ +85°C |
| Common-Mode Rejection Ratio (CMRR) | 68 dB | 83 dB | VCM = 0 V to 3 V |
| Large Signal Voltage Gain (AVO) | 30 V/mV | 100 V/mV | RL = 2 kΩ, VCM = 0 V |
| Slew Rate (SR) | 5 V/µs | 6 V/µs | RL = 2 kΩ |
| Full Power Bandwidth (BWp) | 360 kHz | - | <1% distortion |
| Gain Bandwidth Product (GBP) | 8.4 MHz | - | - |
| Supply Current/Amplifier (ISY) | 750 µA | 1200 µA | VO = 0 V, -40°C ≤ TA ≤ +125°C |
Key Features
- Rail-to-Rail Input and Output: The AD8604AR can operate with input and output signals that range from the negative to the positive supply rail.
- Low Offset Voltage: Maximum offset voltage of 500 µV, ensuring high precision in applications.
- Low Supply Current: Each amplifier consumes a low supply current of 750 µA, making it suitable for battery-powered devices.
- Wide Bandwidth: A gain bandwidth product of 8.4 MHz and a slew rate of 5 V/µs provide high-speed performance.
- Low Distortion and No Phase Reversal: Ensures high fidelity in signal processing and avoids phase reversal issues.
- Unity-Gain Stable: Stable operation in unity-gain configurations.
- Automotive Qualified: Qualified for use in automotive applications.
Applications
- Current Sensing: Ideal for current sensing applications due to its high precision and low noise.
- Barcode Scanners: Used in barcode scanners for signal amplification and processing.
- PA Controls: Suitable for power amplifier control circuits.
- Battery-Powered Instrumentation: Perfect for battery-powered devices requiring low power consumption and high precision.
- Multipole Filters and Sensors: Used in filter circuits and sensor applications where high accuracy is required.
- ASIC Input or Output Amplifiers: Can be used as input or output amplifiers in ASIC designs.
- Audio Applications: Suitable for audio applications due to its wide bandwidth and low distortion.
Q & A
- What is the operating voltage range of the AD8604AR?
The AD8604AR operates from a single supply voltage ranging from 2.7 V to 5.5 V.
- What is the maximum offset voltage of the AD8604AR?
The maximum offset voltage is 500 µV.
- How much current does each amplifier in the AD8604AR consume?
Each amplifier consumes a supply current of 750 µA.
- What is the gain bandwidth product of the AD8604AR?
The gain bandwidth product is 8.4 MHz.
- Is the AD8604AR unity-gain stable?
- What are some common applications of the AD8604AR?
- What is the slew rate of the AD8604AR?
The slew rate is 5 V/µs.
- Is the AD8604AR qualified for automotive use?
- What is the common-mode rejection ratio (CMRR) of the AD8604AR?
- What is the full power bandwidth of the AD8604AR?
