AD7687BCPZ-R2

Product Overview

Category

AD7687BCPZ-R2 belongs to the category of analog-to-digital converters (ADCs).

Use

The AD7687BCPZ-R2 is used to convert analog signals into digital data. It is commonly employed in various applications that require accurate and precise conversion of analog signals.

Characteristics

• High resolution: The AD7687BCPZ-R2 offers a resolution of up to 16 bits, ensuring accurate conversion of analog signals.
• Fast conversion rate: With a maximum conversion rate of 250 kilosamples per second (ksps), it provides real-time data acquisition capabilities.
• Low power consumption: The device operates at low power levels, making it suitable for battery-powered applications.
• Wide input voltage range: It can handle a wide range of input voltages, allowing flexibility in signal acquisition.
• Small package size: The AD7687BCPZ-R2 comes in a compact package, enabling space-efficient designs.

Package and Quantity

The AD7687BCPZ-R2 is available in a small form factor package known as LFCSP (lead-frame chip-scale package). It is typically sold in reels containing a specified quantity of units.

Specifications

• Resolution: 16 bits
• Conversion Rate: Up to 250 ksps
• Input Voltage Range: ±10V
• Power Supply: 2.7V to 5.25V
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The AD7687BCPZ-R2 has a total of 20 pins. The pin configuration is as follows:

1. VREF
2. AGND
3. REFOUT
4. REFIN
5. DGND
6. SDI
7. SDO
8. SCLK
9. CS
10. BUSY
11. DOUT/DRDY
12. DVDD
13. AVDD
14. VDRIVE
15. VIN+
16. VIN-
17. VBIAS
18. NC
19. NC
20. VIO

Functional Features

• High accuracy: The AD7687BCPZ-R2 offers excellent linearity and low integral non-linearity, ensuring precise conversion of analog signals.
• Flexible interface: It supports both serial peripheral interface (SPI) and serial data output (SDO) modes, providing compatibility with various microcontrollers and digital systems.
• Low noise performance: The device incorporates advanced noise reduction techniques, resulting in high signal-to-noise ratio and improved overall performance.

Advantages and Disadvantages

Advantages

• High resolution and accuracy
• Fast conversion rate
• Low power consumption
• Wide input voltage range
• Compact package size

Disadvantages

• Limited number of channels
• Requires external reference voltage for optimal performance

Working Principles

The AD7687BCPZ-R2 operates based on the successive approximation register (SAR) architecture. It utilizes a capacitor array and a comparator to perform the analog-to-digital conversion. The input voltage is sampled, held, and compared against a reference voltage. The converter iteratively adjusts the digital code until it accurately represents the input voltage.

Detailed Application Field Plans

The AD7687BCPZ-R2 finds applications in various fields, including but not limited to: - Industrial automation - Data acquisition systems - Medical equipment - Instrumentation and measurement devices - Audio processing systems

Alternative Models

1. AD7686BCPZ-R2: Similar to AD7687BCPZ-R2 but with 12-bit resolution.
2. AD7688BCPZ-R2: Similar to AD7687BCPZ-R2 but with 18-bit resolution.
3. AD7690BCPZ-R2: Similar to AD7687BCPZ-R2 but with 20-bit resolution.

These alternative models offer different resolutions to cater to specific application requirements.

In conclusion, the AD7687BCPZ-R2 is a high-resolution analog-to-digital converter that offers fast conversion rates and low power consumption. Its compact package and wide input voltage range make it suitable for various applications. However, it has a limited number of channels and requires an external reference voltage. The device operates based on the SAR architecture and finds applications in industrial automation, data acquisition systems, medical equipment, instrumentation, and audio processing systems. Alternative models with different resolutions are available to meet specific needs.