Overview
The AD7870KN is a 12-bit analog-to-digital converter (ADC) manufactured by Analog Devices Inc. This component is part of the AD7870 series, known for its high performance and versatility in various analog-to-digital conversion applications. The AD7870KN features a complete ADC on a single chip, including a track-and-hold amplifier, a successive approximation ADC, an internal clock, and a 3 V buried Zener reference. It operates from ±5 V power supplies and is available in a 24-pin dual-in-line package (DIP).
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Analog Devices Inc. |
| Part Number | AD7870KN |
| Package | 24-DIP (0.300", 7.62mm) |
| Number of Bits | 12 |
| Number of Analog In Channels | 1 |
| Sampling Rate | 100 ksps |
| Analog Input Voltage Range | ±3 V |
| Supply Voltage | ±5 V |
| Conversion Time-Max | 8 μs |
| Interface | Parallel, SPI |
| Integral Nonlinearity (INL) | 1 LSB |
Key Features
- Complete ADC on a Chip: Includes a track-and-hold amplifier, a successive approximation ADC, an internal clock, and a 3 V buried Zener reference.
- Dynamic Specifications: Fully specified for dynamic performance parameters including signal-to-noise ratio, harmonic distortion, and intermodulation distortion.
- Fast Microprocessor Interface: Data access times of 57 ns, making it compatible with modern 8-bit and 16-bit microprocessors and digital signal processors.
- Versatile Interface Logic: Offers a choice of three data output formats: a single, parallel, 12-bit word; two 8-bit bytes; or serial data.
- Internal Reference: On-chip temperature-compensated buried Zener reference, factory-trimmed to 3 V ± 10 mV.
Applications
- Data Acquisition Systems: Suitable for high-speed data acquisition in various industrial, medical, and scientific applications.
- Digital Signal Processing (DSP): Ideal for DSP applications requiring high accuracy and fast conversion times.
- Embedded Systems: Compatible with modern microprocessors and digital signal processors, making it a good choice for embedded system designs.
- Industrial Automation: Used in control systems, monitoring, and automation where precise analog-to-digital conversion is necessary.
Q & A
- What is the resolution of the AD7870KN ADC?
The AD7870KN has a resolution of 12 bits.
- What is the sampling rate of the AD7870KN?
The sampling rate of the AD7870KN is 100 ksps.
- What is the input voltage range for the AD7870KN?
The input voltage range for the AD7870KN is ±3 V.
- What type of package does the AD7870KN come in?
The AD7870KN is available in a 24-pin dual-in-line package (DIP).
- Does the AD7870KN have an internal clock?
Yes, the AD7870KN has a self-contained internal clock that can be overridden by an external clock if required.
- What are the supply voltage requirements for the AD7870KN?
The AD7870KN operates from ±5 V power supplies.
- What is the conversion time for the AD7870KN?
The maximum conversion time for the AD7870KN is 8 μs.
- Does the AD7870KN support multiple interface formats?
Yes, the AD7870KN supports parallel and SPI interfaces, and offers three data output formats: a single, parallel, 12-bit word; two 8-bit bytes; or serial data.
- Is the AD7870KN suitable for high-speed applications?
Yes, the AD7870KN is designed for high-speed applications with fast bus access times and is compatible with modern microprocessors and digital signal processors.
- What is the integral nonlinearity (INL) of the AD7870KN?
The integral nonlinearity (INL) of the AD7870KN is 1 LSB.
