AD7703BNZ

Product Overview

Category

AD7703BNZ belongs to the category of analog-to-digital converters (ADCs).

Use

The AD7703BNZ is used to convert analog signals into digital data for further processing or analysis.

Characteristics

• High resolution: The AD7703BNZ offers a resolution of up to 16 bits, ensuring accurate conversion of analog signals.
• Low power consumption: It operates at low power, making it suitable for battery-powered applications.
• Versatile input range: The ADC supports both unipolar and bipolar input ranges, providing flexibility in signal acquisition.
• On-chip filtering: It includes an on-chip programmable filter that helps eliminate noise and improve signal quality.
• Serial interface: The AD7703BNZ utilizes a serial interface for communication with microcontrollers or other devices.
• Wide temperature range: It can operate reliably over a wide temperature range, making it suitable for various environments.

Package

The AD7703BNZ comes in a standard 24-pin plastic DIP (Dual Inline Package) or SOIC (Small Outline Integrated Circuit) package.

Essence

The essence of the AD7703BNZ lies in its ability to accurately convert analog signals into digital form, enabling further processing and analysis.

Packaging/Quantity

The AD7703BNZ is typically available in reels or tubes, with a quantity of 1000 units per reel/tube.

Specifications

• Resolution: Up to 16 bits
• Input voltage range: ±Vref
• Operating voltage: 2.7V to 5.25V
• Power consumption: 1.5mW (typical)
• Conversion rate: Up to 20 kSPS (samples per second)
• Temperature range: -40°C to +105°C

Detailed Pin Configuration

The AD7703BNZ has a total of 24 pins, which are assigned specific functions. The pin configuration is as follows:

1. VDD: Power supply voltage
2. VSS: Ground reference
3. AGND: Analog ground
4. REFOUT: Reference voltage output
5. REFIN1(+): Positive input for Channel 1
6. REFIN1(-): Negative input for Channel 1
7. AIN1(+): Positive analog input for Channel 1
8. AIN1(-): Negative analog input for Channel 1
9. CLK: Serial clock input
10. DIN: Serial data input
11. DOUT: Serial data output
12. CS: Chip select input
13. DRDY: Data ready output
14. PD: Power-down mode control
15. RST: Reset input
16. REFIN2(+): Positive input for Channel 2
17. REFIN2(-): Negative input for Channel 2
18. AIN2(+): Positive analog input for Channel 2
19. AIN2(-): Negative analog input for Channel 2
20. AVDD: Analog power supply voltage
21. DVDD: Digital power supply voltage
22. DGND: Digital ground
23. NC: No connection
24. NC: No connection

Functional Features

• Dual-channel operation: The AD7703BNZ supports simultaneous conversion of two independent analog signals.
• Programmable gain: It offers programmable gain options to amplify weak signals or accommodate higher voltage levels.
• On-chip calibration: The ADC includes on-chip calibration circuits to ensure accurate and reliable measurements.
• Flexible serial interface: It utilizes a serial interface that allows easy integration with microcontrollers or other digital devices.
• Low noise performance: The AD7703BNZ provides excellent noise rejection, resulting in high-quality digitized signals.

Advantages and Disadvantages

Advantages

• High resolution for accurate signal conversion.
• Low power consumption, suitable for battery-powered applications.
• Versatile input range for flexible signal acquisition.
• On-chip filtering to improve signal quality.
• Wide temperature range for reliable operation in various environments.

Disadvantages

• Limited number of channels (dual-channel operation).
• Requires external components for voltage reference and filtering.

Working Principles

The AD7703BNZ operates based on the principle of successive approximation. It samples the analog input signal, converts it into a digital representation using an internal ADC, and outputs the result through the serial interface. The ADC includes calibration circuits to compensate for any errors introduced during the conversion process.

Detailed Application Field Plans

The AD7703BNZ finds applications in various fields, including: 1. Industrial automation: Used for data acquisition and control systems in industrial processes. 2. Medical devices: Enables precise measurement and monitoring of vital signs. 3. Instrumentation: Utilized in test and measurement equipment for accurate signal analysis. 4. Energy management: Helps monitor and control energy consumption in