DS1804U-010/T&R

Product Overview

Category

The DS1804U-010/T&R belongs to the category of digital potentiometers.

Use

It is primarily used as a variable resistor in electronic circuits, providing a digitally controlled resistance value.

Characteristics

• Digital control: The DS1804U-010/T&R can be controlled digitally, allowing for precise adjustment of resistance.
• Non-volatile memory: It retains its resistance setting even when power is removed.
• Low power consumption: The device operates with low power requirements.
• Wide resistance range: It offers a wide range of resistance values, making it suitable for various applications.

Package

The DS1804U-010/T&R comes in a small surface-mount package.

Essence

The essence of the DS1804U-010/T&R lies in its ability to provide a digitally adjustable resistance value, offering flexibility and precision in electronic circuits.

Packaging/Quantity

The DS1804U-010/T&R is typically packaged in reels and is available in large quantities.

Specifications

• Resistance Range: 0Ω to 10kΩ
• Resolution: 256 steps
• Supply Voltage: 2.7V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Interface: Serial (3-wire)

Detailed Pin Configuration

1. VCC: Power supply voltage
2. GND: Ground reference
3. CS: Chip select input
4. SCLK: Serial clock input
5. SDI: Serial data input
6. SDO: Serial data output
7. U/D: Up/Down control input
8. RST: Reset input
9. W: Wiper terminal
10. A: Terminal A
11. B: Terminal B

Functional Features

• Digital control: The DS1804U-010/T&R allows for precise digital adjustment of resistance.
• Non-volatile memory: It retains the resistance setting even when power is removed, ensuring consistency in circuit performance.
• Up/Down control: The device can be controlled to increase or decrease the resistance value.
• Reset function: The reset input allows for a quick return to a default resistance value.

Advantages and Disadvantages

Advantages

• Precise resistance adjustment
• Non-volatile memory ensures consistent performance
• Low power consumption
• Wide resistance range

Disadvantages

• Limited resolution (256 steps)
• Serial interface may require additional circuitry

Working Principles

The DS1804U-010/T&R operates by digitally controlling the resistance value using a series of internal switches. These switches are controlled by the digital inputs, allowing the user to adjust the resistance to the desired value. The non-volatile memory ensures that the resistance setting is retained even when power is removed.

Detailed Application Field Plans

The DS1804U-010/T&R finds applications in various fields, including:

1. Audio equipment: Used for volume control and tone adjustment.
2. Industrial automation: Provides variable resistance for precise control in industrial processes.
3. Test and measurement instruments: Allows for calibration and adjustment of signal levels.
4. Consumer electronics: Used in devices such as televisions, radios, and gaming consoles for control purposes.

Detailed and Complete Alternative Models

1. DS1804Z-010+: Similar to DS1804U-010/T&R but available in a different package.
2. MCP4131-103E/P: Digital potentiometer with similar specifications and features.
3. MAX5486EUD+: Offers higher resolution and wider resistance range compared to DS1804U-010/T&R.

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