Overview
The AD7872KRZ is a 14-bit analog-to-digital converter (ADC) produced by Analog Devices Inc. It is part of the AD7871/AD7872 family, known for their high performance and versatility. These ADCs are fabricated using the LC2MOS mixed technology process and are designed to operate from ±5 V power supplies, accepting bipolar input signals of ±3 V. The AD7872KRZ is particularly suited for applications requiring high accuracy and dynamic performance, including distortion and signal-to-noise ratio specifications.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 14 bits |
| Input Range | ±3 V |
| Power Supply | ±5 V ± 5% |
| Conversion Rate | Up to 83 kHz |
| Input Bandwidth | Greater than the Nyquist rate, 0.1 dB cutoff frequency at 500 kHz |
| Track-and-Hold Acquisition Time | |
| Throughput Time | 12 μs maximum (with 2 MHz input clock) |
| Reference Voltage | 3 V ± 0 mV (internal, temperature compensated) |
| 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.
- On-chip temperature-compensated 3 V buried Zener reference, providing both the DAC reference and the dc bias required for bipolar operation.
- Track-and-hold amplifier with high input bandwidth and fast acquisition time.
- Serial data output format, compatible with modern microprocessors and digital signal processors.
- No external components required apart from power supply decoupling capacitors.
Applications
The AD7872KRZ is suitable for a variety of applications that require high precision and dynamic performance. These include:
- Data acquisition systems
- Industrial control systems
- Medical devices
- Aerospace and defense systems
- Any application requiring accurate conversion of bipolar analog signals to digital data
Q & A
- What is the resolution of the AD7872KRZ?
The AD7872KRZ has a resolution of 14 bits. - What is the input voltage range of the AD7872KRZ?
The input voltage range is ±3 V. - What is the power supply requirement for the AD7872KRZ?
The AD7872KRZ operates from ±5 V power supplies. - What is the maximum conversion rate of the AD7872KRZ?
The maximum conversion rate is up to 83 kHz. - Does the AD7872KRZ require an external clock?
No, the AD7872KRZ has a self-contained, laser-trimmed internal clock. - What type of output does the AD7872KRZ provide?
The AD7872KRZ provides a serial data output. - What is the operating temperature range of the AD7872KRZ?
The operating temperature range is 0°C to +70°C. - What package types are available for the AD7872KRZ?
The AD7872KRZ is available in a 16-Lead SOIC Wide package. - Does the AD7872KRZ require any external components for operation?
No external components are required apart from power supply decoupling capacitors). - How does the track-and-hold amplifier in the AD7872KRZ perform?
The track-and-hold amplifier has a high input bandwidth and can acquire an input signal to 14-bit accuracy in less than 2 μs).
