Overview
The AD7874ARZ-REEL, produced by Analog Devices Inc., is a four-channel simultaneous sampling, 12-bit data acquisition system. This component is designed to provide high-speed data acquisition with precise phase information preservation, making it ideal for applications such as phased-array sonar and AC motor controllers. The AD7874 includes a high-speed 12-bit ADC, on-chip reference, on-chip clock, and four track/hold amplifiers, allowing simultaneous sampling of all four input channels. This feature ensures that the relative phase information between the input channels is accurately preserved.
Key Specifications
| Specification | Value |
|---|---|
| Number of Channels | 4 |
| Resolution | 12-bit |
| Conversion Time per Channel | 8 μs |
| Sample Rate for All Four Channels | 29 kHz |
| Input Range | ±10 V |
| Supply Voltage | ±5 V |
| Max Operating Temperature | 125 °C |
| Interface | Parallel |
| Package Types | 28-pin PDIP, 28-pin SOIC (Wide), 28-terminal LCCC |
Key Features
- Simultaneous sampling of four input channels using four on-chip track/hold amplifiers, preserving relative phase information.
- High-speed 12-bit ADC with an 8 μs conversion time per channel.
- On-chip reference and on-chip clock for stable and synchronized operation.
- Input bandwidth of the track/hold amplifier greater than the Nyquist rate of the ADC.
- Small signal 3 dB cutoff frequency typically at 500 kHz.
- Automatic addressing of the four on-chip data registers, simplifying data read operations.
Applications
- Phased-array sonar systems where preserving relative phase information is crucial.
- AC motor controllers requiring precise phase information for control algorithms.
- Adaptive filters and digital signal processing applications.
Q & A
- What is the resolution of the AD7874ARZ-REEL?
The AD7874ARZ-REEL has a 12-bit resolution.
- How many channels does the AD7874ARZ-REEL support?
The AD7874ARZ-REEL supports four simultaneous sampling channels.
- What is the conversion time per channel for the AD7874ARZ-REEL?
The conversion time per channel is 8 μs.
- What is the sample rate for all four channels of the AD7874ARZ-REEL?
The sample rate for all four channels is 29 kHz.
- What are the typical package types available for the AD7874ARZ-REEL?
The AD7874ARZ-REEL is available in 28-pin PDIP, 28-pin SOIC (Wide), and 28-terminal LCCC packages.
- What is the maximum operating temperature for the AD7874ARZ-REEL?
The maximum operating temperature is 125 °C.
- Does the AD7874ARZ-REEL have on-chip reference and clock?
Yes, the AD7874ARZ-REEL includes an on-chip reference and on-chip clock.
- What is the input range of the AD7874ARZ-REEL?
The input range is ±10 V.
- What are some common applications of the AD7874ARZ-REEL?
Common applications include phased-array sonar systems, AC motor controllers, adaptive filters, and digital signal processing.
- How does the AD7874ARZ-REEL preserve relative phase information between channels?
The AD7874ARZ-REEL preserves relative phase information by using four on-chip track/hold amplifiers that sample the input channels simultaneously.
