DS1804Z-100

Product Overview

Category

The DS1804Z-100 belongs to the category of digital potentiometers.

Use

It is primarily used for electronic circuit adjustments and as a replacement for mechanical potentiometers.

Characteristics

• Digital control interface
• Non-volatile memory
• Low power consumption
• Wide operating voltage range

Package

The DS1804Z-100 comes in a small outline integrated circuit (SOIC) package.

Essence

This digital potentiometer serves as a variable resistor, allowing precise control over resistance values in electronic circuits.

Packaging/Quantity

The DS1804Z-100 is typically packaged in reels or tubes and is available in quantities of 250 or 1,000 units per package.

Specifications

• Resistance Range: 10 kΩ
• Number of Taps: 100
• Supply Voltage Range: 2.7V to 5.5V
• Temperature Range: -40°C to +85°C
• End-to-End Resistance Tolerance: ±20%
• Increment/Decrement Step Size: 1 LSB (Least Significant Bit)

Detailed Pin Configuration

The DS1804Z-100 has eight pins, each serving a specific function:

1. VCC: Power supply voltage input
2. GND: Ground reference
3. INC: Increment control input
4. U/D: Up/Down control input
5. CS: Chip select input
6. H/L: High/Low control input
7. W: Wiper terminal
8. B: Fixed terminal

Functional Features

• Digital control allows precise adjustment of resistance values.
• Non-volatile memory retains settings even when power is disconnected.
• Increment and decrement control inputs enable easy adjustment.
• High/Low control input determines the initial wiper position.
• Chip select input enables multiple devices to be used in a circuit.

Advantages and Disadvantages

Advantages

• Precise resistance control
• Non-volatile memory for retaining settings
• Low power consumption
• Wide operating voltage range

Disadvantages

• Limited resistance range (10 kΩ)
• Resistance tolerance of ±20%

Working Principles

The DS1804Z-100 utilizes digital switching techniques to adjust the resistance. It consists of a series of resistive elements connected in a ladder configuration. The wiper terminal selects the desired tap point, effectively changing the resistance value. Control inputs determine the direction and step size of the adjustment.

Detailed Application Field Plans

The DS1804Z-100 finds applications in various electronic systems, including:

1. Audio equipment: Volume control, tone adjustment
2. Industrial automation: Calibration, fine-tuning
3. Test and measurement instruments: Signal conditioning, calibration
4. Communication systems: Gain control, impedance matching

Detailed and Complete Alternative Models

1. DS1802Z-100: Similar specifications with a different package (DIP)
2. MCP4131-103E/P: Higher resolution (256 taps) with similar characteristics
3. X9C104SIZ: Lower resistance range (100 Ω) with similar features

These alternative models offer similar functionality and can be considered as replacements for the DS1804Z-100 in specific applications.

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