Overview
The AD7865ASZ-2, produced by Analog Devices Inc., is a high-performance, four-channel simultaneous sampling 14-bit analog-to-digital converter (ADC). This component operates from a single +5 V supply and is designed for applications requiring fast and accurate analog-to-digital conversion. It features a successive approximation ADC with a conversion time of 2.5 µs, four track/hold amplifiers, a 2.5 V reference, an on-chip clock oscillator, and signal conditioning circuitry. The AD7865ASZ-2 is packaged in a 44-lead MQFP (13.9mm x 10mm) and is suitable for a variety of industrial and medical applications where simultaneous sampling of multiple analog inputs is necessary.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Bits | 14 |
| Number of A/D Converters | 4 (simultaneous sampling) |
| Sampling Rate | 350 ksps |
| Supply Voltage | 4.75 V to 5 V |
| Analog Input Range | ±10 V, ±5 V, ±2.5 V |
| Integral Nonlinearity (INL) | 2 LSB |
| Differential Nonlinearity | 1 LSB |
| Package Type | 44-Lead MQFP (13.9mm x 10mm) |
| Overvoltage Protection | Up to ±20 V |
Key Features
- Simultaneous sampling of four analog inputs to preserve relative phase information.
- Fast conversion time of 2.5 µs using successive approximation ADC.
- On-chip 2.5 V reference and clock oscillator.
- High-speed parallel interface for data output.
- Signal conditioning circuitry for improved accuracy.
- Overvoltage protection up to ±20 V on analog inputs.
- Low power consumption from a single +5 V supply.
Applications
The AD7865ASZ-2 is suitable for various applications requiring simultaneous sampling of multiple analog inputs, such as:
- Industrial process control systems.
- Medical imaging and diagnostic equipment.
- Aerospace and defense systems.
- Automotive systems requiring high-speed data acquisition.
- Test and measurement equipment.
Q & A
- What is the conversion time of the AD7865ASZ-2?
The conversion time of the AD7865ASZ-2 is 2.5 µs. - How many analog inputs can the AD7865ASZ-2 sample simultaneously?
The AD7865ASZ-2 can sample four analog inputs simultaneously. - What is the supply voltage range for the AD7865ASZ-2?
The supply voltage range is from 4.75 V to 5 V. - What is the maximum overvoltage protection on the analog inputs?
The maximum overvoltage protection is up to ±20 V. - What is the sampling rate of the AD7865ASZ-2?
The sampling rate is 350 ksps. - What type of package does the AD7865ASZ-2 come in?
The AD7865ASZ-2 comes in a 44-Lead MQFP (13.9mm x 10mm) package. - Does the AD7865ASZ-2 have on-chip signal conditioning circuitry?
Yes, the AD7865ASZ-2 includes on-chip signal conditioning circuitry. - What are the typical applications for the AD7865ASZ-2?
Typical applications include industrial process control, medical imaging, aerospace, automotive systems, and test and measurement equipment. - Is the AD7865ASZ-2 available in different models or grades?
Yes, the AD7865 is available in various models and grades, such as AD7865ASZ-1, AD7865ASZ-3, etc. - Where can I find detailed documentation and support for the AD7865ASZ-2?
Detailed documentation and support can be found on the Analog Devices website and through their support portal.
