DAC7821IPW

Product Overview

Category: Integrated Circuits (ICs)

Use: Digital-to-Analog Converter (DAC)

Characteristics: - High-resolution digital-to-analog conversion - Low power consumption - Wide operating voltage range - Small package size - Easy integration into electronic systems

Package: PowerPAD HTSSOP-28

Essence: The DAC7821IPW is a high-performance, 12-bit digital-to-analog converter designed for various applications that require precise analog output. It converts digital signals into corresponding analog voltages with high accuracy and resolution.

Packaging/Quantity: The DAC7821IPW is typically sold in reels or tubes containing a specific quantity of ICs, such as 250 units per reel.

Specifications

• Resolution: 12 bits
• Number of Channels: 1
• Input Voltage Range: 0V to Vref
• Output Voltage Range: 0V to Vref
• Operating Voltage Range: 2.7V to 5.5V
• Supply Current: 0.6mA (typical)
• Package Type: HTSSOP-28

Pin Configuration

The DAC7821IPW has a total of 28 pins. The following table provides a detailed pin configuration:

| Pin Number | Pin Name | Description | |------------|----------|-------------| | 1 | VDD | Positive supply voltage | | 2 | VREF | Reference voltage input | | 3 | AGND | Analog ground | | 4 | AOUT | Analog output voltage | | 5-16 | D0-D11 | Digital input data bits | | 17 | CS | Chip select input | | 18 | SCLK | Serial clock input | | 19 | DIN | Serial data input | | 20 | DGND | Digital ground | | 21-28 | NC | No connection |

Functional Features

1. High Resolution: The DAC7821IPW provides a 12-bit resolution, allowing for precise analog output.
2. Low Power Consumption: It operates with low power consumption, making it suitable for battery-powered devices.
3. Wide Operating Voltage Range: The DAC7821IPW can operate within a wide voltage range of 2.7V to 5.5V, providing flexibility in various applications.
4. Small Package Size: The HTSSOP-28 package offers a compact form factor, enabling space-efficient integration into electronic systems.

Advantages and Disadvantages

Advantages: - High-resolution conversion - Low power consumption - Wide operating voltage range - Compact package size

Disadvantages: - Limited number of channels (single-channel)

Working Principles

The DAC7821IPW utilizes a digital-to-analog conversion technique called "pulse width modulation" (PWM). It converts the digital input data into an analog voltage by rapidly switching between two voltage levels. The ratio of the on-time to the total cycle time determines the average output voltage level, resulting in a smooth analog output signal.

Detailed Application Field Plans

The DAC7821IPW finds applications in various fields, including: 1. Audio Systems: Providing high-quality audio output in amplifiers, mixers, and digital audio players. 2. Industrial Automation: Generating precise control signals for motor speed control, temperature regulation, and process control. 3. Instrumentation: Producing accurate analog signals for measurement and testing equipment. 4. Communication Systems: Generating analog signals for modulation and demodulation processes in wireless communication systems.

Detailed and Complete Alternative Models

1. DAC8820IPW: 16-bit digital-to-analog converter with similar characteristics and package.
2. DAC124S085CIMM: 12-bit digital-to-analog converter with a different package (MSOP-10) and lower power consumption.
3. DAC8564ICPW: 16-bit digital-to-analog converter with multiple channels and a different package (TSSOP-16).

These alternative models offer similar functionality to the DAC7821IPW but may have variations in features, package types, or performance specifications.

In conclusion, the DAC7821IPW is a high-resolution digital-to-analog converter that provides accurate analog output in various applications. Its compact size, low power consumption, and wide operating voltage range make it a versatile choice for electronic systems requiring precise analog signals.