Overview
The AD7876CRZ is a fast, complete 12-bit analog-to-digital converter (ADC) produced by Analog Devices Inc. This component integrates all the necessary functions for analog-to-digital conversion, including a track-and-hold amplifier, an 8 μs successive approximation ADC, a 3 V buried Zener reference, and versatile interface logic. The AD7876CRZ is designed to provide high performance and compatibility with modern microprocessors and digital signal processors.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 12 bits |
| Input Range | ±10 V |
| Conversion Time | 8 μs |
| Reference Voltage | 3 V ± 10 mV |
| Data Access Time | 57 ns |
| Operating Temperature Range | −40°C to +85°C |
| Package Type | 24-Lead SOIC |
| Power Consumption | −60 mW typical |
Key Features
- Complete 12-bit ADC on a single chip, including track-and-hold amplifier, successive approximation ADC, and internal clock.
- Internal 3 V buried Zener reference, factory trimmed to ±10 mV, with an output capable of providing up to 500 μA to an external load.
- Fast microprocessor interface with data access times of 57 ns, compatible with modern 8-bit and 16-bit microprocessors and digital signal processors.
- Detailed dynamic specifications for DSP users, including signal-to-noise ratio, harmonic distortion, and intermodulation distortion.
- Temperature compensation for stable operation over the full operating temperature range.
Applications
- Digital Signal Processing (DSP) systems requiring high-speed and accurate analog-to-digital conversion.
- Industrial control systems where precise measurement and fast data acquisition are necessary.
- Medical devices that require reliable and high-resolution analog-to-digital conversion.
- Aerospace and defense applications where robust and accurate data conversion is critical.
- Automotive systems that need fast and reliable data acquisition and processing.
Q & A
- What is the resolution of the AD7876CRZ ADC?
The AD7876CRZ has a resolution of 12 bits.
- What is the input voltage range of the AD7876CRZ?
The input voltage range of the AD7876CRZ is ±10 V.
- How long does the AD7876CRZ take to convert an analog signal to digital?
The conversion time of the AD7876CRZ is 8 μs.
- What is the reference voltage of the AD7876CRZ?
The reference voltage of the AD7876CRZ is 3 V ± 10 mV.
- What is the data access time of the AD7876CRZ?
The data access time of the AD7876CRZ is 57 ns.
- What is the operating temperature range of the AD7876CRZ?
The operating temperature range of the AD7876CRZ is −40°C to +85°C.
- In what package type is the AD7876CRZ available?
The AD7876CRZ is available in a 24-Lead SOIC package.
- What is the typical power consumption of the AD7876CRZ?
The typical power consumption of the AD7876CRZ is −60 mW.
- Is the AD7876CRZ suitable for use in DSP systems?
Yes, the AD7876CRZ is fully specified and tested for ac parameters, making it suitable for DSP systems.
- How should the reference output be decoupled for external use?
The reference output should be decoupled with a 200 Ω resistor in series with a parallel combination of a 10 μF tantalum capacitor and a 0.1 μF ceramic capacitor.
