Overview
The AD7851KRZ is a high-speed, 14-bit analog-to-digital converter (ADC) produced by Analog Devices Inc. This component operates from a single 5 V power supply and is designed for high-performance applications. It features self-calibration and system calibration options to ensure accurate operation over time and temperature. The ADC powers up with a set of default conditions, allowing it to be operated as a read-only ADC. It also includes power-down options for low power applications, making it versatile for various use cases.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 14 bits | |
| Throughput Rate | 333 kSPS (A Grade), 285 kSPS (K Grade) | |
| Supply Voltage | 5 V | |
| Power Consumption | 60 mW (typ), 5 μW (power-down mode) | |
| Input Voltage Ranges | 0 V to VREF, –VREF/2 to +VREF/2 centered about VREF/2 | |
| Conversion Time | 2.78 μs to 3.25 μs max | |
| Track-and-Hold Acquisition Time | 0.33 μs | |
| Package Types | 24-Lead PDIP, SOIC, and SSOP | |
| Operating Temperature Range | 0°C to 85°C, –40°C to +85°C |
Key Features
- Single 5 V supply operation
- Pseudo-differential input with two input voltage ranges
- Self-calibration and system calibration options
- Low power consumption with power-down mode
- Flexible serial interface: 8051/SPI/QSPI/μP compatible
- Read/write capability of calibration data
- High-speed throughput rate of up to 333 kSPS
- Input track-and-hold acquisition time of 0.33 μs
Applications
- Digital signal processing
- Speech recognition and synthesis
- Spectrum analysis
- DSP servo control
- Instrumentation and control systems
- High-speed modems
- Automotive systems
Q & A
- What is the resolution of the AD7851KRZ ADC?
The AD7851KRZ has a resolution of 14 bits. - What is the maximum throughput rate of the AD7851KRZ?
The maximum throughput rate is 333 kSPS for A Grade and 285 kSPS for K Grade. - What are the input voltage ranges for the AD7851KRZ?
The input voltage ranges are 0 V to VREF and –VREF/2 to +VREF/2 centered about VREF/2. - What is the typical power consumption of the AD7851KRZ?
The typical power consumption is 60 mW, with a power-down mode of 5 μW. - What are the package types available for the AD7851KRZ?
The package types available are 24-Lead PDIP, SOIC, and SSOP. - Does the AD7851KRZ support self-calibration?
Yes, the AD7851KRZ supports self-calibration and system calibration. - What is the track-and-hold acquisition time of the AD7851KRZ?
The track-and-hold acquisition time is 0.33 μs. - What are some common applications of the AD7851KRZ?
Common applications include digital signal processing, speech recognition and synthesis, spectrum analysis, DSP servo control, instrumentation and control systems, high-speed modems, and automotive systems. - Is the AD7851KRZ compatible with various serial interfaces?
Yes, it is compatible with 8051/SPI/QSPI/μP serial interfaces. - Can the calibration data of the AD7851KRZ be read and written?
Yes, the AD7851KRZ allows read/write capability of calibration data.
