Overview
The AD7872JRZ is a 14-bit, complete sampling analog-to-digital converter (ADC) produced by Analog Devices Inc. This device is part of the AD7871/AD7872 family, which features a track-and-hold amplifier, a successive approximation ADC, a 3 V buried Zener reference, and versatile interface logic. The AD7872JRZ operates from ±5 V power supplies and accepts bipolar input signals of ±3 V, making it suitable for a wide range of applications requiring high accuracy and dynamic performance.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 14 bits |
| Input Range | ±3 V |
| Power Supply | ±5 V ± 5% |
| Conversion Rate | Up to 83 kHz |
| Signal-to-Noise Ratio (SNR) | Fully specified for dynamic performance parameters |
| Distortion | Specified for dynamic performance parameters |
| Track-and-Hold Acquisition Time | < 2 μs |
| Throughput Time | 12 μs maximum (for 2 MHz input clock) |
| Internal Reference | 3 V buried Zener reference, factory trimmed to ±0 mV |
| Package Type | 16-Lead SOIC Wide |
| Operating Temperature | 0°C to +70°C |
Key Features
- Self-contained, laser-trimmed internal clock, eliminating the need for external clock timing components.
- Serial data output format.
- On-chip temperature-compensated 3 V buried Zener reference.
- High-speed comparator and CMOS SAR (Successive Approximation Register).
- Track-and-hold amplifier with a 0.1 dB cutoff frequency at 500 kHz.
- Capable of interfacing to all modern microprocessors and digital signal processors.
Applications
The AD7872JRZ is suitable for various applications that require high precision and dynamic performance, such as:
- Industrial control systems.
- Medical devices.
- Aerospace and defense systems.
- Automotive systems.
- Data acquisition systems.
Q & A
- What is the resolution of the AD7872JRZ?
The AD7872JRZ has a resolution of 14 bits. - What is the input voltage range of the AD7872JRZ?
The input voltage range is ±3 V. - What type of power supply does the AD7872JRZ require?
The AD7872JRZ operates from ±5 V power supplies. - What is the maximum conversion rate of the AD7872JRZ?
The maximum conversion rate is up to 83 kHz. - Does the AD7872JRZ have an internal clock?
Yes, it has a self-contained, laser-trimmed internal clock. - What type of output format does the AD7872JRZ support?
The AD7872JRZ supports serial data output format. - How does the track-and-hold amplifier perform?
The track-and-hold amplifier can acquire an input signal to 14-bit accuracy in less than 2 μs and has a 0.1 dB cutoff frequency at 500 kHz. - What is the operating temperature range of the AD7872JRZ?
The operating temperature range is 0°C to +70°C. - What type of package is the AD7872JRZ available in?
The AD7872JRZ is available in a 16-Lead SOIC Wide package. - Does the AD7872JRZ have an internal reference voltage?
Yes, it has a 3 V buried Zener reference, factory trimmed to ±0 mV.
