Overview
The AD7865ASZ-3 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 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-3 is designed to sample input signals on four channels simultaneously, preserving the relative phase information of the signals on the four analog inputs. The device accepts analog input ranges of ±10 V, ±5 V, or ±2.5 V and includes overvoltage protection up to ±20 V without damaging the part or affecting an ongoing conversion.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Bits | 14 |
| Number of A/D Converters | 4 |
| Sampling Rate | 350 ksps |
| Polarity | Bipolar |
| Integral Nonlinearity (INL) | 2 LSB |
| Differential Nonlinearity | 1 LSB |
| Minimum Supply Voltage | 4.75 V |
| Supply Voltage | 5 V |
| Package Type | 44-Lead MQFP (13.9mm x 10mm) |
| Number of Pins | 44 |
| 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.
- Low power consumption with a single +5 V supply.
- High-speed parallel interface for fast data transfer.
- On-chip clock oscillator and signal conditioning circuitry.
- Overvoltage protection up to ±20 V on the analog inputs.
- Compact 44-Lead MQFP package.
Applications
The AD7865ASZ-3 is suitable for a variety of applications that require high-speed, multi-channel analog-to-digital conversion. These include:
- Industrial control systems.
- Medical devices.
- Aerospace and defense systems.
- Automotive systems.
- Data acquisition systems.
Q & A
- What is the resolution of the AD7865ASZ-3 ADC?
The AD7865ASZ-3 has a resolution of 14 bits. - How many channels does the AD7865ASZ-3 support?
The AD7865ASZ-3 supports four simultaneous sampling channels. - What is the sampling rate of the AD7865ASZ-3?
The sampling rate is 350 ksps. - What are the accepted analog input ranges for the AD7865ASZ-3?
The device accepts analog input ranges of ±10 V, ±5 V, or ±2.5 V. - Does the AD7865ASZ-3 have overvoltage protection?
Yes, it has overvoltage protection up to ±20 V. - What is the supply voltage for the AD7865ASZ-3?
The supply voltage is 5 V. - What type of package does the AD7865ASZ-3 come in?
The AD7865ASZ-3 comes in a 44-Lead MQFP package. - What is the minimum supply voltage for the AD7865ASZ-3?
The minimum supply voltage is 4.75 V. - Does the AD7865ASZ-3 have an on-chip clock oscillator?
Yes, it includes an on-chip clock oscillator. - What is the polarity of the AD7865ASZ-3?
The polarity is bipolar.
