Overview
The AD7876BQ is a high-performance, 12-bit analog-to-digital converter (ADC) produced by Analog Devices Inc. This component is part of the AD7870/AD7875/AD7876 family, which offers a complete ADC solution on a single chip. The AD7876BQ features a track-and-hold amplifier, an 8 μs successive approximation ADC, a 3 V buried Zener reference, and versatile interface logic. It is designed to operate with a self-contained internal clock, eliminating the need for external clock timing components, although an external clock can be used if required. The device supports multiple data output formats, including a single 12-bit parallel word, two 8-bit bytes, or serial data, making it compatible with modern microprocessors and digital signal processors.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Bits | 12 |
| Sampling Rate | 100 kHz |
| Input Range | ±10 V |
| Input Type | Single Ended |
| Data Interface | Parallel, Serial |
| Reference Type | Internal 3 V Buried Zener |
| Analog Supply Voltage | ±5 V |
| Digital Supply Voltage | 5 V |
| Operating Temperature | −40°C to +85°C |
| Package | 24-Lead CERDIP |
| Power Consumption | −60 mW typical |
| Data Access Time | 57 ns |
Key Features
- Complete ADC on a Single Chip: Includes a track-and-hold amplifier, an 8 μs successive approximation ADC, a 3 V buried Zener reference, and control logic.
- Dynamic Specifications: Fully specified and tested for ac parameters such as signal-to-noise ratio, harmonic distortion, and intermodulation distortion.
- Fast Microprocessor Interface: Compatible with modern 8-bit and 16-bit microprocessors and digital signal processors with fast bus access times.
- Internal Clock: Self-contained internal clock with the option to override with an external clock if needed.
- Multiple Data Output Formats: Supports parallel (12-bit word or two 8-bit bytes) and serial data output.
- Low Power Consumption: Typical power consumption of −60 mW.
Applications
- Data Acquisition Systems: Ideal for applications requiring high-speed and high-accuracy analog-to-digital conversion.
- Digital Signal Processing (DSP): Suitable for DSP applications due to its dynamic specifications and fast interface capabilities.
- Industrial Automation: Used in various industrial automation systems where precise and fast analog-to-digital conversion is necessary.
- Medical Devices: Can be used in medical devices that require accurate and reliable analog-to-digital conversion.
- Aerospace and Defense: Applicable in aerospace and defense systems where high reliability and performance are critical.
Q & A
- What is the resolution of the AD7876BQ ADC?
The AD7876BQ is a 12-bit analog-to-digital converter.
- What are the input voltage ranges for the AD7876BQ?
The AD7876BQ accepts input signals in the range of ±10 V.
- What is the sampling rate of the AD7876BQ?
The AD7876BQ has a sampling rate of 100 kHz.
- Does the AD7876BQ have an internal clock?
Yes, the AD7876BQ has a self-contained internal clock, but it can also be overridden by an external clock if needed.
- What are the supported data output formats for the AD7876BQ?
The AD7876BQ supports parallel (12-bit word or two 8-bit bytes) and serial data output formats.
- What is the typical power consumption of the AD7876BQ?
The typical power consumption of the AD7876BQ is −60 mW.
- What is the operating temperature range for the AD7876BQ?
The operating temperature range for the AD7876BQ is −40°C to +85°C.
- What type of package is the AD7876BQ available in?
The AD7876BQ is available in a 24-Lead CERDIP package.
- Is the AD7876BQ suitable for DSP applications?
Yes, the AD7876BQ is fully specified and tested for ac parameters, making it suitable for DSP applications.
- How fast is the data access time for the AD7876BQ?
The data access time for the AD7876BQ is 57 ns.
