Overview
The AD7851KN is a high-speed, 14-bit analog-to-digital converter (ADC) produced by Analog Devices Inc. This ADC 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 AD7851KN powers up with a set of default conditions and can be operated as a read-only ADC. It is available in a 24-lead PDIP package.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 14-bit | |
| Throughput Rate | 285 kSPS (K Grade), 333 kSPS (A Grade) | kSPS |
| Input Voltage Range | 0 V to VREF, –VREF/2 to +VREF/2 centered about VREF/2 | V |
| Supply Voltage | 5 V | V |
| Power Consumption | 60 mW (typical), 5 μW (power-down mode) | mW, μW |
| Conversion Time | 2.78 μs to 3.25 μs | μs |
| Track-and-Hold Acquisition Time | 0.33 μs | μs |
| Package Type | 24-lead PDIP | |
| Operating Temperature Range | 0°C to 85°C | °C |
Key Features
- Single 5 V power supply
- Pseudo-differential input with two input voltage ranges
- Self-calibration and system calibration options
- Low power consumption: 60 mW typical, 5 μW in power-down mode
- Flexible serial interface: 8051/SPI/QSPI/μP compatible
- Read/write capability of calibration data
- High throughput rate: 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 AD7851KN ADC?
The AD7851KN has a 14-bit resolution. - What is the maximum throughput rate of the AD7851KN?
The maximum throughput rate is 333 kSPS for the A Grade and 285 kSPS for the K Grade. - What are the input voltage ranges for the AD7851KN?
The input voltage ranges are 0 V to VREF and –VREF/2 to +VREF/2 centered about VREF/2. - What is the supply voltage for the AD7851KN?
The supply voltage is 5 V. - How much power does the AD7851KN consume?
The typical power consumption is 60 mW, and it reduces to 5 μW in power-down mode. - What is the conversion time of the AD7851KN?
The conversion time ranges from 2.78 μs to 3.25 μs. - What is the track-and-hold acquisition time of the AD7851KN?
The track-and-hold acquisition time is 0.33 μs. - In what package type is the AD7851KN available?
The AD7851KN is available in a 24-lead PDIP package. - What is the operating temperature range of the AD7851KN?
The operating temperature range is 0°C to 85°C. - Does the AD7851KN support self-calibration?
Yes, the AD7851KN supports self-calibration and system calibration options.
