AD7986BCPZ

Product Overview

Category

AD7986BCPZ belongs to the category of analog-to-digital converters (ADCs).

Use

The AD7986BCPZ is used for converting analog signals into digital data. It is commonly employed in various applications that require precise and accurate conversion of analog signals, such as industrial automation, medical equipment, and communication systems.

Characteristics

• High resolution: The AD7986BCPZ offers a resolution of up to 18 bits, ensuring accurate conversion of analog signals.
• Fast conversion rate: With a maximum sampling rate of 1 MSPS (Mega Samples Per Second), it can quickly convert analog signals into digital data.
• Low power consumption: The device operates at low power, making it suitable for battery-powered applications.
• Wide input voltage range: It supports a wide input voltage range, allowing it to handle various signal levels.
• Serial interface: The AD7986BCPZ utilizes a serial interface (SPI) for easy integration with microcontrollers or other digital devices.

Package and Quantity

The AD7986BCPZ comes in a small form factor package known as LFCSP (Lead Frame Chip Scale Package). It is available in tape and reel packaging, with a quantity of 250 units per reel.

Specifications

• Resolution: Up to 18 bits
• Sampling Rate: Up to 1 MSPS
• Input Voltage Range: ±10V
• Power Supply: 2.7V to 5.25V
• Operating Temperature Range: -40°C to +85°C
• Interface: Serial Peripheral Interface (SPI)
• Package Type: LFCSP

Pin Configuration

The AD7986BCPZ has a total of 20 pins. Here is the detailed pin configuration:

1. VDD: Power supply positive terminal
2. VREF: Reference voltage input
3. AGND: Analog ground
4. VIN: Analog input voltage
5. SCLK: Serial clock input
6. SDI: Serial data input
7. SDO: Serial data output
8. CS: Chip select input
9. DGND: Digital ground
10. VDRIVE: Drive voltage for digital interface

11-20. Reserved for other functions

Functional Features

1. High-resolution conversion: The AD7986BCPZ offers high-resolution conversion up to 18 bits, ensuring accurate representation of analog signals.
2. Fast conversion rate: With a maximum sampling rate of 1 MSPS, it can quickly capture and convert analog signals into digital data.
3. Low power consumption: The device operates at low power, making it suitable for power-sensitive applications.
4. Flexible interface: It utilizes a serial interface (SPI) for easy integration with microcontrollers or other digital devices.
5. Wide input voltage range: The AD7986BCPZ supports a wide input voltage range, allowing it to handle various signal levels.

Advantages and Disadvantages

Advantages

• High resolution ensures accurate conversion.
• Fast conversion rate enables real-time data acquisition.
• Low power consumption extends battery life in portable applications.
• Wide input voltage range allows for versatile signal handling.
• Serial interface simplifies integration with digital systems.

Disadvantages

• Limited number of available pins may restrict certain applications requiring more I/O connections.
• Higher cost compared to lower-resolution ADCs.

Working Principles

The AD7986BCPZ operates based on the successive approximation register (SAR) architecture. It samples the analog input voltage and performs a series of comparisons to determine the digital representation of the input signal. The internal circuitry includes a sample-and-hold amplifier, SAR ADC core, and digital interface.

When a conversion is initiated, the sample-and-hold amplifier captures and holds the analog input voltage. The SAR ADC core then performs a binary search algorithm to determine the digital code that best represents the input voltage. The resulting digital data is then made available through the serial interface for further processing or storage.

Application Field Plans

The AD7986BCPZ finds applications in various fields, including:

1. Industrial Automation: It can be used for precise measurement and control of analog signals in industrial processes.
2. Medical Equipment: The high resolution and accuracy make it suitable for medical devices requiring precise data acquisition, such as patient monitoring systems.
3. Communication Systems: The ADC can be utilized in communication systems for converting analog signals into digital format, enabling signal processing and transmission.

Alternative Models

Here are some alternative models that offer similar functionality:

1. AD7987BCPZ: Similar to AD7986BCPZ but with higher resolution (up to 20 bits).
2. AD7984BCPZ: Lower-resolution version (up to 16 bits) with lower cost.
3. AD7988BCPZ: Higher-speed version with increased