Overview
The AD7875KN is a 12-bit analog-to-digital converter (ADC) produced by Analog Devices Inc. This component is part of the AD7870/AD7875/AD7876 family, known for their comprehensive integration of all necessary functions for analog-to-digital conversion on a single chip. The AD7875KN features a track-and-hold amplifier, an 8 μs successive approximation ADC, a 3 V buried Zener reference, and versatile interface logic, making it suitable for a wide range of applications requiring high precision and speed.
Key Specifications
| Specification | Value |
|---|---|
| Number of Bits | 12 |
| Sampling Rate | 100 kHz |
| Number of Inputs | 1 |
| Input Type | Single Ended |
| Input Range | 0 V to +5 V |
| Input Resistance | Typically 25 kΩ |
| Data Interface | Parallel and Serial (DSP compatible) |
| Architecture | Successive Approximation (SAR) |
| Reference Type | Internal 3 V buried Zener reference |
| Voltage - Supply, Analog | ±5 V |
| Voltage - Supply, Digital | 5 V |
| Operating Temperature | -55°C to 125°C |
| Package / Case | 28-pin plastic leaded chip carrier (PLCC) |
| Data Access Time | 57 ns |
Key Features
- Complete 12-bit ADC on a single chip, including track-and-hold amplifier, ADC, and internal reference.
- Fast microprocessor interface with data access times of 57 ns, compatible with modern 8-bit and 16-bit microprocessors and digital signal processors.
- Dynamic specifications fully tested for ac parameters such as signal-to-noise ratio, harmonic distortion, and intermodulation distortion.
- Low power consumption: typically 60 mW.
- Versatile interface logic supporting both parallel and serial data transfer.
Applications
The AD7875KN is suitable for various applications requiring high-speed and high-precision analog-to-digital conversion. These include:
- Digital signal processing systems.
- Industrial control systems.
- Medical devices.
- Aerospace and defense systems.
- Automotive systems.
Q & A
- What is the resolution of the AD7875KN ADC?
The AD7875KN has a 12-bit resolution. - What is the sampling rate of the AD7875KN?
The sampling rate is up to 100 kHz. - What is the input voltage range for the AD7875KN?
The input voltage range is 0 V to +5 V. - What type of interface does the AD7875KN support?
The AD7875KN supports both parallel and serial interfaces, compatible with DSP systems. - What is the typical power consumption of the AD7875KN?
The typical power consumption is 60 mW. - What is the operating temperature range of the AD7875KN?
The operating temperature range is -55°C to 125°C. - What package type is the AD7875KN available in?
The AD7875KN is available in a 28-pin plastic leaded chip carrier (PLCC). - How long does it take to access data from the AD7875KN?
The data access time is 57 ns. - Does the AD7875KN have an internal reference?
Yes, the AD7875KN has an internal 3 V buried Zener reference. - What are some common applications for the AD7875KN?
Common applications include digital signal processing systems, industrial control systems, medical devices, aerospace and defense systems, and automotive systems.
