Overview
The AD7865ASZ-1, produced by Analog Devices Inc., is a high-performance, four-channel simultaneous sampling 14-bit analog-to-digital converter (ADC). This device operates from a single +5 V supply and features a 2.5 µs 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. The AD7865ASZ-1 is designed to sample input signals on four channels simultaneously, preserving the relative phase information of the signals. This makes it ideal for applications requiring precise and synchronized data acquisition.
Key Specifications
| Specification | Value |
|---|---|
| Number of Channels | 4 |
| Resolution | 14 bits |
| Sampling Rate | 350 ksps |
| Analog Input Range | ±10 V, ±5 V, ±2.5 V |
| Overvoltage Protection | ±20 V |
| Supply Voltage | 4.75 V to 5.25 V |
| Package Type | 44-Lead MQFP (13.9mm x 10mm) |
| Integral Nonlinearity (INL) | 2 LSB |
| Differential Nonlinearity | 1 LSB |
Key Features
- Four-channel simultaneous sampling to preserve relative phase information.
- High-speed parallel interface for fast data transfer.
- On-chip clock oscillator and 2.5 V reference for reduced external component count.
- Signal conditioning circuitry for improved signal integrity.
- Low power consumption, making it suitable for battery-powered applications.
- Overvoltage protection up to ±20 V on analog inputs.
Applications
- Data acquisition systems requiring synchronized multi-channel sampling.
- Industrial control and automation systems.
- Medical devices, such as patient monitoring systems.
- Aerospace and defense applications where precise data acquisition is critical.
- Test and measurement equipment.
Q & A
- What is the resolution of the AD7865ASZ-1?
The AD7865ASZ-1 has a resolution of 14 bits.
- How many channels does the AD7865ASZ-1 support?
The AD7865ASZ-1 supports four channels.
- What is the sampling rate of the AD7865ASZ-1?
The sampling rate of the AD7865ASZ-1 is 350 ksps.
- What are the available analog input ranges for the AD7865ASZ-1?
The available analog input ranges are ±10 V, ±5 V, and ±2.5 V.
- Does the AD7865ASZ-1 have overvoltage protection?
Yes, the AD7865ASZ-1 has overvoltage protection up to ±20 V on the analog inputs.
- What is the supply voltage range for the AD7865ASZ-1?
The supply voltage range is from 4.75 V to 5.25 V.
- What type of package does the AD7865ASZ-1 come in?
The AD7865ASZ-1 comes in a 44-Lead MQFP package (13.9mm x 10mm).
- What is the integral nonlinearity (INL) of the AD7865ASZ-1?
The integral nonlinearity (INL) is 2 LSB.
- What is the differential nonlinearity of the AD7865ASZ-1?
The differential nonlinearity is 1 LSB.
- What are some typical applications of the AD7865ASZ-1?
Typical applications include data acquisition systems, industrial control, medical devices, aerospace and defense, and test and measurement equipment.
