Overview
The AD7856KR, produced by Analog Devices Inc., is a high-speed, low-power, 14-bit analog-to-digital converter (ADC) designed for a wide range of applications. It operates from a single 5 V power supply and features automatic calibration on power-up, ensuring accurate operation over time and temperature. The ADC supports eight single-ended or four pseudo-differential input channels and has a throughput rate of 285 kSPS. It is constructed using CMOS technology, which ensures low power dissipation, typically 60 mW during normal operation and 5.1 mW in power-down mode at 10 kSPS throughput rate.
Key Specifications
| Parameter | Value |
|---|---|
| Type | ADC, Successive Approximation |
| Number of Bits | 14 |
| Number of Analog Input Channels | 8 (single-ended) or 4 (pseudo-differential) |
| Sampling Rate | 285 kSPS |
| Supply Voltage | 5 V |
| Operating Temperature | 0°C to 105°C |
| Package | 24-lead SOIC, DIP, SSOP |
| Output Format | Serial (SPI/QSPI/8051/µP) |
| Sample and Hold / Track and Hold | Track and Hold |
| Power Consumption (Typical) | 60 mW (normal operation), 5.1 mW (power-down mode at 10 kSPS) |
Key Features
- Single 5 V supply with automatic calibration on power-up
- Self- and system calibration options
- Eight single-ended or four pseudo-differential input channels
- 285 kSPS throughput rate
- Low power consumption: 60 mW typical during normal operation and 5.1 mW in power-down mode
- Flexible power management options including automatic power-down after conversion
- Versatile serial interface: SPI/QSPI/8051/µP
- CMOS construction for low power dissipation
- Full power bandwidth up to 10 MHz
Applications
The AD7856KR is suitable for various applications requiring high-speed and accurate analog-to-digital conversion. These include:
- Data acquisition systems
- Industrial control systems
- Medical devices
- Aerospace and defense systems
- Automotive systems
- Test and measurement equipment
Q & A
- What is the resolution of the AD7856KR ADC?
The AD7856KR has a resolution of 14 bits. - What is the sampling rate of the AD7856KR?
The sampling rate is 285 kSPS. - What types of input channels does the AD7856KR support?
The AD7856KR supports eight single-ended or four pseudo-differential input channels. - What is the supply voltage for the AD7856KR?
The supply voltage is 5 V. - What are the operating temperature ranges for the AD7856KR?
The operating temperature range is from 0°C to 105°C. - What types of packages are available for the AD7856KR?
The AD7856KR is available in 24-lead SOIC, DIP, and SSOP packages. - What is the typical power consumption of the AD7856KR during normal operation?
The typical power consumption is 60 mW during normal operation. - Does the AD7856KR support automatic power-down after conversion?
Yes, the AD7856KR supports automatic power-down after conversion. - What types of serial interfaces does the AD7856KR support?
The AD7856KR supports SPI/QSPI/8051/µP serial interfaces. - What is the full power bandwidth of the AD7856KR?
The full power bandwidth is up to 10 MHz.
