AD7849CR

Product Overview

Category: Integrated Circuit (IC)

Use: The AD7849CR is a high-performance, 14-bit successive approximation analog-to-digital converter (ADC). It is designed for precision measurement applications where accuracy and speed are crucial.

Characteristics: - High resolution: The AD7849CR offers a resolution of 14 bits, allowing for precise measurements. - Fast conversion rate: With a maximum conversion rate of 1 MSPS (Mega Samples Per Second), it can quickly convert analog signals into digital data. - Low power consumption: The ADC operates at low power, making it suitable for battery-powered devices. - Wide input voltage range: The AD7849CR can handle input voltages ranging from 0V to Vref, providing flexibility in various applications.

Package: The AD7849CR comes in a small form factor package, making it suitable for space-constrained designs. It is available in a 16-lead SOIC (Small Outline Integrated Circuit) package.

Essence: The essence of the AD7849CR lies in its ability to accurately convert analog signals into digital data with high resolution and speed.

Packaging/Quantity: The AD7849CR is typically sold in reels or tubes containing multiple units. The exact quantity depends on the supplier and customer requirements.

Specifications

• Resolution: 14 bits
• Conversion Rate: Up to 1 MSPS
• Input Voltage Range: 0V to Vref
• Power Supply: +5V
• Operating Temperature Range: -40°C to +85°C
• Package Type: 16-lead SOIC

Detailed Pin Configuration

The AD7849CR has a total of 16 pins, each serving a specific purpose. Here is the detailed pin configuration:

1. VDD: Power supply voltage input
2. VREF: Reference voltage input
3. AGND: Analog ground
4. DGND: Digital ground
5. VIN: Analog input voltage
6. VOUT: Digital output voltage
7. CLK: Clock input for conversion timing
8. CS: Chip select input
9. D0-D13: Data bus lines
10. RD: Read control input
11. WR: Write control input
12. RESET: Reset control input
13. PD: Power-down control input
14. REFOUT: Reference voltage output
15. REFIN: Reference voltage input
16. NC: No connection

Functional Features

The AD7849CR offers several functional features that enhance its performance and usability:

1. High-resolution conversion: The 14-bit resolution ensures accurate conversion of analog signals into digital data.
2. Fast conversion rate: With a maximum conversion rate of 1 MSPS, it can handle high-speed applications.
3. Flexible input voltage range: The ADC accepts a wide range of input voltages, allowing for versatile use in different scenarios.
4. Low power consumption: The AD7849CR operates at low power, making it suitable for battery-powered devices.
5. Easy integration: The small form factor package enables easy integration into space-constrained designs.

Advantages and Disadvantages

Advantages: - High resolution for precise measurements - Fast conversion rate for time-sensitive applications - Wide input voltage range for versatility - Low power consumption for energy efficiency - Small form factor package for easy integration

Disadvantages: - Limited pin count may restrict the number of simultaneous inputs or outputs - Requires external reference voltage for accurate conversions

Working Principles

The AD7849CR utilizes the successive approximation technique to convert analog signals into digital data. It samples the analog input voltage, compares it with a reference voltage, and iteratively adjusts the digital output to match the input voltage. This process continues until the desired level of accuracy is achieved.

Detailed Application Field Plans

The AD7849CR finds applications in various fields where precise analog-to-digital conversion is required. Some potential application areas include:

1. Industrial automation: The ADC can be used in industrial control systems for accurate measurement and monitoring of physical parameters.
2. Medical devices: It can be employed in medical instruments for high-resolution data acquisition, such as ECG (Electrocardiogram) machines or blood pressure monitors.
3. Test and measurement equipment: The AD7849CR is suitable for use in oscilloscopes, data loggers, and other test equipment that require precise analog signal digitization.
4. Communication systems: It can be utilized in communication systems for signal processing and modulation/demodulation purposes.

Detailed and Complete Alternative Models

1. AD7949: A similar 14-bit ADC from Analog Devices with a higher maximum conversion rate of 2 MSPS.
2. MAX11100: A 14-bit ADC from Maxim Integrated with an integrated reference voltage and a maximum conversion rate of 500