Overview
The AD7872ANZ is a 14-bit, complete, sampling analog-to-digital converter (ADC) produced by Analog Devices Inc. This device is part of the AD7871/AD7872 series and is fabricated using the LC2MOS mixed technology process. It 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. The AD7872ANZ features a self-contained, laser-trimmed internal clock and does not require external clock timing components, although it can be overridden for synchronization with digital systems to minimize noise.
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 Nyquist rate, 0.1 dB cutoff at 500 kHz |
| Track-and-Hold Acquisition Time | |
| Throughput Time | 12 μs maximum (with 2 MHz clock) |
| Reference Voltage | 3 V ± 0 mV (internal, temperature compensated) |
| Package Types | 16-Lead PDIP, CERDIP, SOIC |
| Operating Temperature Range | -40°C to +85°C |
Key Features
- Self-contained, laser-trimmed internal clock with the option to override for synchronization with digital systems.
- On-chip temperature-compensated 3 V buried Zener reference.
- Track-and-hold amplifier with high input bandwidth and fast acquisition time.
- Successive approximation ADC with high accuracy and dynamic performance specifications.
- Serial data output format.
- No external components required apart from power supply decoupling capacitors.
Applications
The AD7872ANZ 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 AD7872ANZ?
The AD7872ANZ has a resolution of 14 bits. - What is the input voltage range of the AD7872ANZ?
The input voltage range is ±3 V. - What are the power supply requirements for the AD7872ANZ?
The device operates from ±5 V power supplies. - What is the maximum conversion rate of the AD7872ANZ?
The maximum conversion rate is up to 83 kHz. - Does the AD7872ANZ require an external clock?
No, it has a self-contained, laser-trimmed internal clock, but it can be overridden for synchronization. - What is the track-and-hold acquisition time of the AD7872ANZ?
The track-and-hold acquisition time is less than 2 μs. - What are the package options for the AD7872ANZ?
The device is available in 16-Lead PDIP, CERDIP, and SOIC packages. - What is the operating temperature range of the AD7872ANZ?
The operating temperature range is -40°C to +85°C. - Does the AD7872ANZ have an internal reference voltage?
Yes, it has an on-chip temperature-compensated 3 V buried Zener reference. - What is the output format of the AD7872ANZ?
The output format is serial data.
