Overview
The AD7875KP, produced by Analog Devices Inc., is a fast, complete 12-bit analog-to-digital converter (ADC) designed for high-performance data acquisition applications. This ADC integrates a track-and-hold amplifier, a successive approximation ADC, a 3 V buried Zener reference, and versatile interface logic on a single chip. It operates from ±5 V power supplies and supports a unipolar input range of 0 V to +5 V, making it suitable for a variety of analog-to-digital conversion tasks. The AD7875KP is known for its low power consumption, fast data access times, and compatibility with modern microprocessors and digital signal processors.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Bits | 12 |
| Sampling Rate | 100 kHz |
| Number of Inputs | 1 |
| Input Type | Single Ended |
| Input Range | 0 V to +5 V |
| Data Interface | SPI, Parallel |
| Architecture | Successive Approximation (SAR) |
| Reference Type | Internal |
| Voltage - Supply, Analog | ±5 V |
| Voltage - Supply, Digital | ±5 V |
| Operating Temperature | 0°C to 70°C |
| Package | 28-Lead PLCC (J-Lead) |
| Data Access Time | 57 ns |
Key Features
- Complete 12-bit ADC on a single chip, including track-and-hold amplifier, successive approximation ADC, and internal 3 V reference.
- Low power consumption: typically 60 mW.
- Fast microprocessor interface with data access times of 57 ns, compatible with modern 8-bit and 16-bit microprocessors and digital signal processors.
- Self-contained internal clock, which can be overridden by an external clock if required.
- Supports multiple data output formats: single 12-bit parallel word, two 8-bit bytes, or serial data.
- Dynamic performance specifications include signal-to-noise ratio, harmonic distortion, and intermodulation distortion.
Applications
The AD7875KP is suitable for a wide range of applications requiring high-speed and accurate analog-to-digital conversion. These include:
- Data acquisition systems.
- Digital signal processing (DSP) systems.
- Industrial control systems.
- Medical devices.
- Aerospace and defense applications.
Q & A
- What is the input voltage range of the AD7875KP?
The AD7875KP accepts a unipolar input range of 0 V to +5 V. - What is the resolution of the AD7875KP?
The AD7875KP is a 12-bit analog-to-digital converter. - What are the power supply requirements for the AD7875KP?
The AD7875KP operates from ±5 V power supplies. - What are the data interface options for the AD7875KP?
The AD7875KP supports SPI, parallel data interfaces. - What is the typical power consumption of the AD7875KP?
The typical power consumption is 60 mW. - What is the data access time of the AD7875KP?
The data access time is 57 ns. - Is the AD7875KP compatible with modern microprocessors and DSPs?
Yes, it is compatible with modern 8-bit and 16-bit microprocessors and digital signal processors. - What is the operating temperature range of the AD7875KP?
The operating temperature range is 0°C to 70°C. - What package types are available for the AD7875KP?
The AD7875KP is available in a 28-Lead PLCC (J-Lead) package. - Does the AD7875KP have an internal clock?
Yes, the AD7875KP has a self-contained internal clock that can be overridden by an external clock if required.
