Overview
The AD7872KR, produced by Analog Devices Inc., is a high-performance, 14-bit analog-to-digital converter (ADC) designed for a wide range of applications requiring high-speed and high-accuracy data conversion. This device is part of the AD7871/AD7872 family, which features a complete monolithic ADC with a track/hold amplifier, successive-approximation ADC, and a 3 V buried Zener reference. The AD7872KR operates from ±5 V power supplies and accepts bipolar input signals of ±3 V, making it versatile for various digital signal processing tasks.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Bits | 14 |
| Sampling Rate | Up to 83 kSPS |
| Input Range | ±3 V |
| Power Supply | ±5 V |
| Operating Temperature | 0°C to +70°C |
| Signal-to-Noise Ratio (SNR) | 80 dB at 10 kHz input frequency |
| Data Access Time | 57 ns |
| Package Type | 16-lead SOIC, 16-pin plastic DIP, hermetic DIP |
Key Features
- Complete monolithic 14-bit ADC with track/hold amplifier and successive-approximation ADC.
- Self-contained, laser-trimmed internal clock; can be overridden for synchronization with external digital systems.
- Low power consumption: 50 mW typical.
- Serial data output format.
- Dynamic performance specifications including distortion and signal-to-noise ratio.
- ESD protection circuitry.
- Compatible with all modern microprocessors and digital signal processors.
Applications
- Digital Signal Processing (DSP).
- High-speed modems.
- Speech recognition and synthesis.
- Spectrum analysis.
- DSP servo control.
Q & A
- What is the resolution of the AD7872KR ADC?
The AD7872KR has a resolution of 14 bits. - What is the maximum sampling rate of the AD7872KR?
The maximum sampling rate is up to 83 kSPS. - What is the input voltage range for the AD7872KR?
The input voltage range is ±3 V. - What are the power supply requirements for the AD7872KR?
The device operates from ±5 V power supplies. - What is the operating temperature range for the AD7872KR?
The operating temperature range is 0°C to +70°C. - What is the signal-to-noise ratio (SNR) of the AD7872KR at 10 kHz input frequency?
The SNR is 80 dB at 10 kHz input frequency. - What is the data access time for the AD7872KR?
The data access time is 57 ns. - What types of packages are available for the AD7872KR?
The device is available in 16-lead SOIC, 16-pin plastic DIP, and hermetic DIP packages. - Does the AD7872KR have ESD protection?
Yes, the AD7872KR features proprietary ESD protection circuitry. - What are some common applications of the AD7872KR?
Common applications include digital signal processing, high-speed modems, speech recognition and synthesis, spectrum analysis, and DSP servo control.
