DAC7731E

Product Overview

Category: Digital-to-Analog Converter (DAC)

Use: The DAC7731E is a high-performance, 12-bit voltage output digital-to-analog converter. It is designed to convert digital signals into analog voltages with high precision and accuracy.

Characteristics: - High resolution: 12-bit resolution allows for precise voltage output. - Fast settling time: Provides quick response to changes in input signals. - Low power consumption: Operates at low power levels, making it suitable for battery-powered devices. - Wide operating temperature range: Can function reliably in extreme temperature conditions. - Small package size: Comes in a compact package, saving space on circuit boards.

Package: The DAC7731E is available in a small outline integrated circuit (SOIC) package.

Essence: The essence of the DAC7731E lies in its ability to convert digital data into corresponding analog voltages accurately and efficiently.

Packaging/Quantity: The DAC7731E is typically sold in reels containing a quantity of 250 units per reel.

Specifications

• Resolution: 12 bits
• Voltage Reference Range: 0V to Vref
• Output Voltage Range: 0V to Vref
• Supply Voltage: 2.7V to 5.5V
• Operating Temperature Range: -40°C to +125°C
• Settling Time: 10µs (typical)
• Power Consumption: 0.6mW (typical)

Pin Configuration

The DAC7731E has a total of 16 pins. The pin configuration is as follows:

1. VDD: Positive supply voltage
2. VREF: Voltage reference input
3. AGND: Analog ground
4. OUT: Analog voltage output
5. A0-A11: Address inputs for selecting the digital input code
6. CS: Chip select input
7. WR: Write control input
8. GND: Ground

Functional Features

• High linearity: The DAC7731E provides excellent linearity, ensuring accurate conversion of digital signals to analog voltages.
• Low glitch energy: Minimizes unwanted voltage transients during signal transitions.
• Power-on reset: Automatically initializes the DAC to a known state upon power-up.
• Serial interface: Allows for easy integration with microcontrollers and other digital systems.

Advantages and Disadvantages

Advantages: - High resolution and accuracy - Fast settling time - Low power consumption - Wide operating temperature range - Compact package size

Disadvantages: - Limited output voltage range (0V to Vref)

Working Principles

The DAC7731E utilizes a binary-weighted resistor ladder network to convert digital input codes into corresponding analog voltages. The digital input codes are applied to the address inputs (A0-A11), and the internal circuitry generates the appropriate voltage output on the OUT pin based on the input code.

Detailed Application Field Plans

The DAC7731E is commonly used in various applications that require precise analog voltage generation, such as: - Audio equipment - Instrumentation and measurement systems - Industrial control systems - Communication devices - Automotive electronics

Detailed and Complete Alternative Models

• DAC7731EVM: Evaluation module for the DAC7731E
• DAC7731IPW: Similar 12-bit DAC in a different package (TSSOP)
• DAC8830: 16-bit DAC with similar features
• AD5621: 12-bit DAC from Analog Devices

These alternative models offer similar functionality and can be considered as alternatives to the DAC7731E depending on specific requirements.

Word count: 511 words