Overview
The AD8065AR is a high-performance operational amplifier from Analog Devices Inc. It is part of the AD8065/AD8066 family, which includes single and dual amplifiers, respectively. The AD8065AR is a single amplifier with FET inputs, offering high performance and ease of use. Developed in Analog Devices' proprietary XFCB process, this amplifier is known for its exceptionally low noise operation and very high input impedance. It features a wide supply voltage range, rail-to-rail outputs, and excellent overall performance, making it suitable for a variety of applications.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Bandwidth (–3 dB) | G = +1, VO = 0.2 V p-p | 100 | - | 145 | MHz |
| Slew Rate | G = +2, VO = 4 V step | 130 | - | 180 | V/μs |
| Input Voltage Noise | f = 10 kHz | - | 7 | - | nV/√Hz |
| Input Current Noise | f = 10 kHz | - | 0.6 | - | fA/√Hz |
| Supply Voltage Range | - | 5 | - | 24 | V |
| Quiescent Current per Amplifier | - | 6.4 | - | 7.2 | mA |
| Input Offset Voltage | VCM = 0 V, SOIC package | 0.4 | - | 1.5 | mV |
| Common-Mode Rejection Ratio | VCM = 1 V to 4 V | -74 | - | -100 | dB |
| Output Voltage Swing | RL = 1 kΩ | 0.1 | - | 4.85 | V |
Key Features
- High Performance: 145 MHz bandwidth and 180 V/μs slew rate, making it suitable for high-speed applications.
- Low Noise Operation: Exceptionally low noise with 7 nV/√Hz input voltage noise and 0.6 fA/√Hz input current noise at 10 kHz.
- Wide Supply Voltage Range: Operates from 5 V to 24 V, including single-supply configurations.
- Rail-to-Rail Outputs: Provides full output swing to the supply rails.
- High Input Impedance: FET inputs with very high common-mode input impedance.
- Low Power Consumption: Typical supply current of 6.4 mA per amplifier.
- Small Packaging: Available in SOIC-8, SOT-23-5, and MSOP-8 packages.
- Excellent Distortion Specifications: SFDR of −88 dBc at 1 MHz.
- No Phase Reversal: Ensures stable operation without phase reversal.
Applications
- Instrumentation: Suitable for various instrumentation applications due to its high accuracy and low noise.
- Photodiode Preamps: Ideal for photodiode preamplification due to its high input impedance and low noise.
- Filters and A/D Drivers: Used in filter circuits and as drivers for analog-to-digital converters.
- Level Shifting and Buffering: Effective in level shifting and buffering applications requiring high accuracy.
- Automotive Driver Assistance Systems: Qualified for automotive applications, including driver assistance systems.
- Video Applications: Excellent for video applications with differential gain and phase errors of 0.02% and 0.02°, respectively.
Q & A
- What is the bandwidth of the AD8065AR operational amplifier?
The AD8065AR has a bandwidth of 145 MHz at a gain of +1 and 0.2 V p-p output voltage.
- What is the slew rate of the AD8065AR?
The slew rate of the AD8065AR is 180 V/μs at a gain of +2 and a 4 V step output voltage.
- What is the input voltage noise of the AD8065AR?
The input voltage noise is 7 nV/√Hz at 10 kHz.
- What is the supply voltage range for the AD8065AR?
The AD8065AR operates from 5 V to 24 V, including single-supply configurations.
- What are the typical applications of the AD8065AR?
The AD8065AR is used in instrumentation, photodiode preamps, filters, A/D drivers, level shifting, buffering, and video applications.
- What is the quiescent current per amplifier for the AD8065AR?
The typical quiescent current per amplifier is 6.4 mA.
- What is the common-mode rejection ratio of the AD8065AR?
The common-mode rejection ratio is -74 dB to -100 dB.
- What are the available package types for the AD8065AR?
The AD8065AR is available in SOIC-8, SOT-23-5, and MSOP-8 packages.
- Does the AD8065AR have rail-to-rail outputs?
- Is the AD8065AR suitable for automotive applications?
