DS1804Z-050/T&R

Product Overview

Category: Integrated Circuit (IC)

Use: Digital Potentiometer

Characteristics: - Non-volatile memory - 256-position resolution - Serial interface - Low power consumption - Wide operating voltage range

Package: T&R (Tape and Reel)

Essence: The DS1804Z-050/T&R is a digital potentiometer IC that provides a variable resistance in electronic circuits. It offers the ability to digitally control the resistance value, making it suitable for applications where precise resistance adjustments are required.

Packaging/Quantity: The DS1804Z-050/T&R is available in a tape and reel package, which is commonly used for automated assembly processes. The quantity per reel may vary depending on the manufacturer's specifications.

Specifications

• Resolution: 256 positions
• Resistance Range: 50 kΩ
• Operating Voltage Range: 2.7V to 5.5V
• Temperature Range: -40°C to +85°C
• Interface: Serial (3-wire)
• Memory Type: Non-volatile
• Power Consumption: Low

Detailed Pin Configuration

The DS1804Z-050/T&R has the following 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. H/L: High/Low control input
9. W: Wiper terminal
10. A: Terminal A of the potentiometer
11. B: Terminal B of the potentiometer

Functional Features

• Digital control: The DS1804Z-050/T&R allows for precise digital control of the resistance value, eliminating the need for manual adjustments.
• Non-volatile memory: The IC retains its resistance setting even when power is removed, ensuring that the desired resistance value is maintained upon power-up.
• Wide operating voltage range: The DS1804Z-050/T&R can operate within a wide voltage range, making it compatible with various electronic systems.
• Low power consumption: The IC consumes minimal power, making it suitable for battery-powered applications.

Advantages and Disadvantages

Advantages: - Precise resistance control - Non-volatile memory - Wide operating voltage range - Low power consumption

Disadvantages: - Limited resistance range (50 kΩ) - Serial interface may require additional circuitry for communication

Working Principles

The DS1804Z-050/T&R utilizes a combination of digital logic and analog circuitry to adjust the resistance value. It consists of a series of resistive elements connected in a ladder configuration. By selectively connecting or disconnecting these elements, the effective resistance between the wiper terminal and the A or B terminal can be adjusted digitally.

The control inputs (CS, SCLK, SDI) allow the user to send commands to the IC, specifying the desired resistance value. The IC then adjusts the position of the wiper terminal accordingly, resulting in the desired resistance.

Detailed Application Field Plans

The DS1804Z-050/T&R can be used in various applications, including:

1. Audio equipment: Volume control circuits, equalizers, and tone control circuits.
2. Industrial automation: Precision control systems, motor speed control, and instrumentation.
3. Consumer electronics: LCD brightness control, LED dimming, and power supply adjustment.
4. Communication systems: Signal conditioning, filter adjustment, and impedance matching.

Detailed and Complete Alternative Models

Some alternative models to the DS1804Z-050/T&R include:

1. MCP401X: Microchip Technology Inc.
2. X9C103: Intersil Corporation
3. AD8400: Analog Devices Inc.
4. MAX5486: Maxim Integrated

These alternative models offer similar functionality and can be considered as replacements for the DS1804Z-050/T&R in various applications.

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