AD7847BR

Product Overview

• Category: Integrated Circuit (IC)
• Use: Analog-to-Digital Converter (ADC)
• Characteristics: High-resolution, low-power consumption
• Package: 24-pin SOIC (Small Outline Integrated Circuit)
• Essence: Converts analog signals to digital data
• Packaging/Quantity: Available in reels of 2500 units

Specifications

• Resolution: 12 bits
• Conversion Rate: 1 MSPS (Mega Samples Per Second)
• Input Voltage Range: 0V to Vref (Reference Voltage)
• Power Supply: +5V
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The AD7847BR has a total of 24 pins. The pin configuration is as follows:

1. REFOUT
2. VREF
3. AGND
4. DGND
5. VIN
6. VDD
7. DB11
8. DB10
9. DB9
10. DB8
11. DB7
12. DB6
13. DB5
14. DB4
15. DB3
16. DB2
17. DB1
18. DB0
19. CS
20. RD
21. WR
22. A0
23. A1
24. A2

Functional Features

• High-resolution ADC with 12-bit output
• Fast conversion rate of 1 MSPS
• Wide input voltage range from 0V to Vref
• Low power consumption for energy-efficient operation
• Internal reference voltage generation (VREF) for accurate conversions
• Serial interface for easy integration with microcontrollers and other digital systems

Advantages and Disadvantages

Advantages: - High resolution provides precise digital representation of analog signals - Fast conversion rate allows for real-time data acquisition - Wide input voltage range accommodates a variety of signal levels - Low power consumption reduces energy usage and heat generation - Serial interface simplifies integration with digital systems

Disadvantages: - Limited to 12-bit resolution, which may not be sufficient for certain applications requiring higher precision - Requires an external reference voltage (VREF) for accurate conversions - Limited operating temperature range (-40°C to +85°C) may restrict usage in extreme environments

Working Principles

The AD7847BR is an analog-to-digital converter that converts continuous analog signals into discrete digital data. It utilizes a successive approximation algorithm to determine the digital representation of the input voltage. The input voltage is compared to a reference voltage (VREF) and the converter iteratively adjusts its internal digital code until it converges to the closest digital representation.

Detailed Application Field Plans

The AD7847BR can be used in various applications that require analog-to-digital conversion, such as:

1. Data acquisition systems
2. Industrial automation
3. Medical instrumentation
4. Audio processing
5. Communication systems

Detailed and Complete Alternative Models

1. AD7887BR - 12-bit ADC with higher operating temperature range (-40°C to +125°C)
2. AD7824BR - 8-bit ADC with lower resolution but faster conversion rate (2 MSPS)
3. AD7791BR - 16-bit ADC with lower conversion rate (250 kSPS) but higher resolution

These alternative models offer different trade-offs in terms of resolution, conversion rate, and operating temperature range, allowing users to choose the most suitable option for their specific application requirements.

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