Overview
The AD7865ASZ-3REEL is a high-performance, four-channel simultaneous sampling 14-bit analog-to-digital converter (ADC) produced by Analog Devices Inc. This component operates from a single +5 V supply and is designed for applications requiring fast, low-power conversion with high accuracy. The AD7865 features a successive approximation ADC, four track/hold amplifiers, a 2.5 V reference, an on-chip clock oscillator, and signal conditioning circuitry. It also includes a high-speed parallel interface, making it suitable for a variety of industrial and medical applications.
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Analog Devices Inc. |
| Part Number | AD7865ASZ-3REEL |
| Package | 44-Lead MQFP (13.9mm x 10mm) |
| Number of Pins | 44 |
| Number of Bits | 14 |
| Sampling Rate | 350 ksps |
| Polarity | Bipolar |
| Integral Nonlinearity (INL) | 2 LSB |
| Differential Nonlinearity | 1 LSB |
| Number of A/D Converters | 1 (4 channels) |
| Min Supply Voltage | 4.75 V |
| Supply Voltage | 5 V |
| Analog Input Range | ±10 V, ±5 V, ±2.5 V |
| Overvoltage Protection | ±20 V |
Key Features
- Four-channel simultaneous sampling to preserve relative phase information of the input signals.
- Successive approximation ADC with a conversion time of 2.5 µs.
- On-chip track/hold amplifiers, 2.5 V reference, and clock oscillator.
- High-speed parallel interface for fast data transfer.
- Low power consumption, operating from a single +5 V supply.
- Overvoltage protection up to ±20 V on the analog inputs.
- Signal conditioning circuitry integrated on the chip.
Applications
The AD7865ASZ-3REEL is suitable for various applications, including:
- Industrial process control systems requiring simultaneous sampling of multiple channels.
- Medical devices such as ECG and EEG systems where accurate and fast data acquisition is crucial.
- Aerospace and defense systems needing high reliability and precision in data conversion.
- Automotive systems, particularly in safety and control systems.
- Test and measurement equipment where multiple channels need to be sampled simultaneously.
Q & A
- What is the AD7865ASZ-3REEL?
The AD7865ASZ-3REEL is a four-channel simultaneous sampling 14-bit analog-to-digital converter produced by Analog Devices Inc.
- What is the sampling rate of the AD7865ASZ-3REEL?
The sampling rate of the AD7865ASZ-3REEL is 350 ksps.
- What is the power supply requirement for the AD7865ASZ-3REEL?
The AD7865ASZ-3REEL operates from a single +5 V supply.
- What is the analog input range for the AD7865ASZ-3REEL?
The analog input range for the AD7865ASZ-3REEL is ±10 V, ±5 V, or ±2.5 V.
- Does the AD7865ASZ-3REEL have overvoltage protection?
Yes, the AD7865ASZ-3REEL has overvoltage protection up to ±20 V on the analog inputs.
- What type of interface does the AD7865ASZ-3REEL use?
The AD7865ASZ-3REEL uses a high-speed parallel interface.
- What is the conversion time of the AD7865ASZ-3REEL?
The conversion time of the AD7865ASZ-3REEL is 2.5 µs.
- How many channels does the AD7865ASZ-3REEL support?
The AD7865ASZ-3REEL supports four simultaneous sampling channels.
- What is the package type of the AD7865ASZ-3REEL?
The AD7865ASZ-3REEL comes in a 44-Lead MQFP package.
- What are some common applications of the AD7865ASZ-3REEL?
The AD7865ASZ-3REEL is commonly used in industrial process control, medical devices, aerospace and defense systems, automotive systems, and test and measurement equipment.
