DS1868E-010/T&R

Basic Information Overview

• Category: Electronic Component
• Use: Digital Potentiometer
• Characteristics: Programmable, Non-volatile, Dual Channel
• Package: T&R (Tape and Reel)
• Essence: Provides digital control of resistance in electronic circuits
• Packaging/Quantity: 2500 units per reel

Specifications

• Resolution: 256 steps
• Resistance Range: 10kΩ
• Supply Voltage: 2.7V to 5.5V
• Temperature Range: -40°C to +85°C
• Interface: I2C

Detailed Pin Configuration

The DS1868E-010/T&R has a total of 14 pins. The pin configuration is as follows:

1. VCC: Power supply voltage
2. GND: Ground reference
3. SDA: Serial Data Line for I2C communication
4. SCL: Serial Clock Line for I2C communication
5. A0: Address bit 0 for device addressing
6. A1: Address bit 1 for device addressing
7. NC: No Connection
8. NC: No Connection
9. W0: Digital potentiometer wiper terminal for channel 0
10. B0: Terminal connected to one end of the resistor element for channel 0
11. A0: Terminal connected to the other end of the resistor element for channel 0
12. W1: Digital potentiometer wiper terminal for channel 1
13. B1: Terminal connected to one end of the resistor element for channel 1
14. A1: Terminal connected to the other end of the resistor element for channel 1

Functional Features

• Programmable resistance adjustment through digital control
• Non-volatile memory to retain settings even after power loss
• Dual channel design allows independent control of two resistors
• I2C interface for easy integration into digital systems

Advantages and Disadvantages

Advantages

• Precise resistance adjustment with 256 steps resolution
• Non-volatile memory ensures settings are retained
• Dual channel design provides flexibility in circuit design
• Easy integration into digital systems with I2C interface

Disadvantages

• Limited resistance range of 10kΩ
• Temperature range may not be suitable for extreme environments

Working Principles

The DS1868E-010/T&R is a digital potentiometer that utilizes electronic switches to adjust the resistance. It operates based on the principle of varying the position of the wiper terminal along the resistor element. The digital control signals received through the I2C interface determine the position of the wiper, thereby adjusting the resistance value.

Detailed Application Field Plans

The DS1868E-010/T&R finds applications in various electronic systems where precise resistance adjustment is required. Some potential application fields include: 1. Audio Equipment: Volume control circuits, equalizers, and tone control circuits. 2. Industrial Control Systems: Variable gain amplifiers, motor speed control, and sensor calibration. 3. Test and Measurement Instruments: Programmable signal generators, attenuators, and voltage dividers. 4. Communication Systems: RF power control, impedance matching circuits, and filter tuning.

Detailed and Complete Alternative Models

1. DS1804 - Digital Potentiometer with 100kΩ Resistance Range
2. MCP4017 - Single Channel Digital Potentiometer with I2C Interface
3. MAX5486 - Dual Channel Digital Potentiometer with SPI Interface
4. AD8403 - Quad Channel Digital Potentiometer with 1kΩ Resistance Range

These alternative models offer similar functionality and can be considered as alternatives to the DS1868E-010/T&R based on specific requirements.

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