Overview
The AD8655ARMZ-REEL, produced by Analog Devices Inc., is a precision CMOS operational amplifier known for its low noise and high dc accuracy. This amplifier leverages Analog Devices' DigiTrim® technology to enhance its precision performance. It is particularly beneficial in low voltage applications, improving resolution and dynamic range. The AD8655 is ideal for audio applications such as microphone pre-amps and audio mixing consoles due to its low noise, low distortion, and high output current capability, which helps in reducing system-level noise and maintaining audio fidelity.
Key Specifications
| Parameter | Value | Conditions |
|---|---|---|
| Input Voltage Noise Density | 2.7 nV/√Hz | f = 10 kHz |
| Offset Voltage | 250 µV max | Over VCM |
| Offset Voltage Drift | 0.4 µV/°C typ | |
| Bandwidth | 28 MHz | |
| Operating Voltage Range | 2.7 V to 5.5 V | |
| Input Bias Current | 1 pA typ | VS = 5 V, VCM = VS/2, TA = 25°C |
| Common-Mode Rejection Ratio | 100 dB typ | VCM = 0 V to 5 V |
| Supply Current/Amplifier | 3.7 mA typ | VO = 0 V |
| Operating Temperature Range | −40°C to +125°C | |
| Packaging Style | 8-lead MSOP |
Key Features
- Low Noise and High Precision: The AD8655 features low input voltage noise density of 2.7 nV/√Hz at 10 kHz and low offset voltage, making it suitable for high-precision applications.
- Rail-to-Rail Input and Output: This amplifier offers rail-to-rail input and output, enhancing its usability in a wide range of applications.
- High Output Current Capability: It has a high output current capability, which is beneficial for audio and other high-current applications.
- Wide Operating Voltage Range: The device operates over a voltage range of 2.7 V to 5.5 V, making it versatile for various power supply conditions.
- High Common-Mode Rejection Ratio: With a common-mode rejection ratio of 100 dB, it provides excellent noise rejection in differential signal applications.
Applications
- Audio Applications: Suitable for microphone pre-amps and audio mixing consoles due to its low noise and high output current capability.
- Data Acquisition and Process Controls: Benefits from its high precision and rail-to-rail input and output, making it ideal for data acquisition, process controls, and PLL filter applications.
- ADC and DAC Buffers: Used in analog-to-digital converter (ADC) and digital-to-analog converter (DAC) buffers due to its precision and low noise characteristics.
- Industrial Controls and Precision Filters: Applicable in industrial controls, precision filters, and digital scales.
- Automotive Collision Avoidance: Used in automotive collision avoidance systems due to its high precision and reliability.
Q & A
- What is the input voltage noise density of the AD8655ARMZ-REEL?
The input voltage noise density of the AD8655ARMZ-REEL is 2.7 nV/√Hz at 10 kHz.
- What is the maximum offset voltage of the AD8655ARMZ-REEL?
The maximum offset voltage is 250 µV over VCM.
- What is the bandwidth of the AD8655ARMZ-REEL?
The bandwidth of the AD8655ARMZ-REEL is 28 MHz.
- What is the operating voltage range of the AD8655ARMZ-REEL?
The operating voltage range is from 2.7 V to 5.5 V.
- What is the typical input bias current of the AD8655ARMZ-REEL?
The typical input bias current is 1 pA at VS = 5 V, VCM = VS/2, and TA = 25°C.
- What is the common-mode rejection ratio of the AD8655ARMZ-REEL?
The common-mode rejection ratio is 100 dB typ at VCM = 0 V to 5 V.
- What is the supply current per amplifier for the AD8655ARMZ-REEL?
The supply current per amplifier is 3.7 mA typ at VO = 0 V.
- What is the operating temperature range of the AD8655ARMZ-REEL?
The operating temperature range is from −40°C to +125°C.
- What is the packaging style of the AD8655ARMZ-REEL?
The packaging style is 8-lead MSOP.
- In which applications is the AD8655ARMZ-REEL commonly used?
The AD8655ARMZ-REEL is commonly used in audio applications, data acquisition, process controls, ADC and DAC buffers, industrial controls, precision filters, digital scales, and automotive collision avoidance systems.
