AD7846KN

Product Overview

Category

AD7846KN belongs to the category of integrated circuits (ICs).

Use

The AD7846KN is commonly used as a 12-bit successive approximation analog-to-digital converter (ADC). It converts analog signals into digital data for various applications.

Characteristics

• 12-bit resolution
• Successive approximation conversion technique
• Low power consumption
• Wide operating voltage range
• High accuracy and linearity
• Fast conversion speed

Package

AD7846KN is available in a 20-pin plastic dual in-line package (PDIP).

Essence

The essence of AD7846KN lies in its ability to accurately convert analog signals into digital data, making it suitable for precise measurement and control applications.

Packaging/Quantity

AD7846KN is typically packaged in tubes or trays, with quantities varying depending on the supplier. Common packaging options include tubes of 25 or 50 units.

Specifications

• Resolution: 12 bits
• Conversion Time: 1.5 µs (typical)
• Input Voltage Range: 0V to Vref
• Operating Voltage Range: 2.7V to 5.5V
• Power Consumption: 200 µA (typical)
• Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The AD7846KN has a total of 20 pins, each serving a specific function. The pin configuration is as follows:

1. REF IN: Reference input voltage
2. VDD: Positive supply voltage
3. AGND: Analog ground
4. VREF OUT: Reference output voltage
5. VREF CAP: Reference capacitor connection
6. D7-D0: Digital output pins
7. CS: Chip select input
8. RD: Read input
9. WR: Write input
10. BUSY: Conversion in progress indicator
11. DGND: Digital ground
12. VLOGIC: Logic supply voltage
13. DB7-DB0: Data bus pins
14. A0-A3: Address input pins
15. RESET: Reset input
16. VSS: Negative supply voltage

Functional Features

1. Successive Approximation Conversion Technique

The AD7846KN utilizes the successive approximation technique to convert analog signals into digital data. This method provides high accuracy and fast conversion speed.

2. Low Power Consumption

With a typical power consumption of only 200 µA, the AD7846KN is designed to minimize energy usage, making it suitable for battery-powered applications.

3. Wide Operating Voltage Range

The AD7846KN can operate within a wide voltage range of 2.7V to 5.5V, allowing flexibility in various electronic systems.

4. High Accuracy and Linearity

This ADC offers high accuracy and linearity, ensuring precise measurement and control of analog signals.

Advantages and Disadvantages

Advantages

• High accuracy and linearity
• Fast conversion speed
• Low power consumption
• Wide operating voltage range

Disadvantages

• Limited resolution (12 bits)
• Requires external reference voltage

Working Principles

The AD7846KN works by sampling an analog input signal and converting it into a digital representation using the successive approximation technique. It compares the input voltage with a reference voltage and adjusts the digital output accordingly. The conversion process is controlled by the internal logic circuitry.

Detailed Application Field Plans

The AD7846KN finds applications in various fields, including but not limited to: - Industrial automation - Medical equipment - Test and measurement instruments - Data acquisition systems - Process control systems

Detailed and Complete Alternative Models

1. AD7866: 12-bit ADC with simultaneous sampling capability
2. AD7829: 8-channel, 8-bit ADC with serial interface
3. AD7791: Low-power, low-noise 24-bit ADC for precision measurements
4. AD7476: 12-bit ADC with integrated temperature sensor

These alternative models offer different features and specifications to cater to specific application requirements.

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