Overview
The AD7864ASZ-2REEL is a high-speed, 4-channel, simultaneous sampling 12-bit analog-to-digital converter (ADC) produced by Analog Devices Inc. This component operates from a single 5 V supply and is designed for low power and high-speed applications. It features four track-and-hold amplifiers and a successive approximation ADC, allowing for simultaneous sampling and conversion of any subset of the four channels.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Number of Channels | 4 | |
| Number of Bits | 12 | |
| Sampling Rate | 520 ksps | |
| Supply Voltage | 5 V (nominal), 4.75 V (min), 5.25 V (max) | V |
| Input Voltage Range | 0 V to 2.5 V, 0 V to 5 V | V |
| Conversion Time | 1.65 μs | μs |
| Track-and-Hold Acquisition Time | 0.35 μs | μs |
| Power Dissipation | 90 mW (typical), 120 mW (max) | mW |
| Package | 44-QFP | |
| Differential Nonlinearity (DNL) | 0.9 LSB | LSB |
Key Features
- Simultaneous sampling of four analog inputs with tight aperture delay matching.
- High-speed parallel interface for easy connection to microprocessors, microcontrollers, and digital signal processors.
- Single 5 V supply operation with low power consumption (90 mW typical, 20 μW in standby mode).
- Overvoltage protection on analog inputs.
- Hardware or software selectable channel sequence for conversion.
- On-chip clock oscillator and signal conditioning circuitry.
Applications
- AC motor control.
- Uninterrupted power supplies.
- Data acquisition systems.
- Communications systems.
Q & A
- What is the number of channels in the AD7864ASZ-2REEL?
The AD7864ASZ-2REEL has 4 channels.
- What is the resolution of the AD7864ASZ-2REEL?
The AD7864ASZ-2REEL is a 12-bit analog-to-digital converter.
- What are the input voltage ranges for the AD7864ASZ-2REEL?
The input voltage ranges are 0 V to 2.5 V and 0 V to 5 V.
- What is the conversion time per channel for the AD7864ASZ-2REEL?
The conversion time per channel is 1.65 μs.
- How does the AD7864ASZ-2REEL handle power consumption?
The AD7864ASZ-2REEL operates with a typical power consumption of 90 mW and can enter a standby mode consuming 20 μW.
- What type of interface does the AD7864ASZ-2REEL use?
The AD7864ASZ-2REEL features a high-speed parallel interface.
- Does the AD7864ASZ-2REEL have overvoltage protection?
Yes, the AD7864ASZ-2REEL has overvoltage protection on its analog inputs.
- How can the channel sequence for conversion be selected?
The channel sequence can be selected via hardware (using channel select input pins) or software (programming the channel select register).
- What is the package type of the AD7864ASZ-2REEL?
The AD7864ASZ-2REEL is packaged in a 44-QFP.
- What are some typical applications of the AD7864ASZ-2REEL?
Typical applications include AC motor control, uninterrupted power supplies, data acquisition systems, and communications systems.
