Imaginea poate fi reprezentativă.
Consultați specificațiile pentru detalii despre produs.
DAC7801LU

DAC7801LU

Product Overview

Category: Digital-to-Analog Converter (DAC)

Use: The DAC7801LU is a high-performance, low-power, 12-bit voltage-output digital-to-analog converter. It is designed for various applications that require precise analog output generation, such as industrial control systems, data acquisition systems, and instrumentation.

Characteristics: - High resolution: 12-bit digital-to-analog conversion - Low power consumption: Operates at a low supply current of 0.5 mA - Voltage output range: 0 to Vref - Fast settling time: Provides a settling time of 10 µs - Wide temperature range: Suitable for operation in industrial environments (-40°C to +85°C) - Low glitch energy: Minimizes unwanted transient voltages during output changes

Package: The DAC7801LU is available in a small form factor, 8-pin SOIC (Small Outline Integrated Circuit) package. This package offers ease of integration into various circuit designs and provides reliable performance.

Essence: The DAC7801LU is the core component responsible for converting digital signals into precise analog voltages. It enables accurate control of analog outputs in a wide range of applications.

Packaging/Quantity: The DAC7801LU is typically sold in reels containing 250 units per reel.

Specifications

  • Resolution: 12 bits
  • Supply Voltage Range: 2.7V to 5.5V
  • Reference Voltage Range: 0V to Vcc
  • Integral Nonlinearity (INL): ±1 LSB (max)
  • Differential Nonlinearity (DNL): ±1 LSB (max)
  • Settling Time: 10 µs (max)
  • Power Consumption: 0.5 mA (typ)
  • Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The DAC7801LU has the following pin configuration:

  1. Vout: Analog voltage output
  2. AGND: Analog ground
  3. Vref: Reference voltage input
  4. CS: Chip select input
  5. DIN: Serial data input
  6. SCLK: Serial clock input
  7. GND: Ground
  8. Vcc: Supply voltage input

Functional Features

  • High-resolution digital-to-analog conversion
  • Low power consumption for energy-efficient operation
  • Fast settling time for rapid response in dynamic applications
  • Wide operating temperature range for reliable performance in harsh environments
  • Low glitch energy to minimize unwanted transient voltages during output changes

Advantages and Disadvantages

Advantages: - High resolution enables precise analog output generation - Low power consumption prolongs battery life in portable devices - Fast settling time allows for quick response in time-critical applications - Wide operating temperature range ensures reliable operation in various environments - Low glitch energy reduces unwanted noise in the analog output signal

Disadvantages: - Limited to voltage output only, not suitable for current output applications - Requires an external reference voltage source for accurate conversion

Working Principles

The DAC7801LU utilizes a digital-to-analog conversion technique called pulse-width modulation (PWM). It converts the incoming digital data into a corresponding analog voltage by rapidly switching the output between two voltage levels. The ratio of the on-time to the total switching period determines the average output voltage, which represents the digital input value.

Detailed Application Field Plans

The DAC7801LU finds extensive application in various fields, including: 1. Industrial Control Systems: Provides precise analog control signals for motor speed control, valve positioning, and process control. 2. Data Acquisition Systems: Enables accurate conversion of digital sensor readings into analog signals for further processing and analysis. 3. Instrumentation: Used in test and measurement equipment to generate precise analog waveforms for signal generation and calibration.

Detailed and Complete Alternative Models

  1. DAC7800LU: Similar to the DAC7801LU, but with 10-bit resolution instead of 12 bits.
  2. DAC7811LU: Offers improved performance with 14-bit resolution and lower integral nonlinearity.
  3. DAC7822LU: Provides dual-channel capability with two independent 12-bit digital-to-analog converters in a single package.

These alternative models offer different resolutions and additional features to cater to specific application requirements.

Word count: 552 words

Enumerați 10 întrebări și răspunsuri comune legate de aplicarea lui DAC7801LU în soluțiile tehnice

Sure! Here are 10 common questions and answers related to the application of DAC7801LU in technical solutions:

Q1: What is DAC7801LU? A1: DAC7801LU is a digital-to-analog converter (DAC) chip manufactured by Texas Instruments.

Q2: What is the operating voltage range of DAC7801LU? A2: The operating voltage range of DAC7801LU is typically between 2.7V and 5.5V.

Q3: What is the resolution of DAC7801LU? A3: DAC7801LU has a resolution of 12 bits, which means it can convert digital input values into analog output with 4096 possible levels.

Q4: What is the maximum output current of DAC7801LU? A4: The maximum output current of DAC7801LU is typically 20 mA.

Q5: Can DAC7801LU be used for both single-ended and differential output applications? A5: Yes, DAC7801LU can be used for both single-ended and differential output applications.

Q6: What is the interface used to communicate with DAC7801LU? A6: DAC7801LU uses a serial interface called SPI (Serial Peripheral Interface) for communication.

Q7: Can DAC7801LU operate in both unipolar and bipolar output modes? A7: Yes, DAC7801LU can operate in both unipolar (0V to Vref) and bipolar (-Vref/2 to +Vref/2) output modes.

Q8: What is the settling time of DAC7801LU? A8: The settling time of DAC7801LU is typically 10 µs, which refers to the time taken for the output voltage to reach within a specified error band after a change in the digital input.

Q9: Can DAC7801LU be used in industrial control systems? A9: Yes, DAC7801LU is commonly used in industrial control systems for applications such as process control, motor control, and instrumentation.

Q10: Is DAC7801LU available in a small form factor package? A10: Yes, DAC7801LU is available in a small 8-pin SOIC (Small Outline Integrated Circuit) package, making it suitable for space-constrained designs.

Please note that the answers provided here are general and may vary depending on specific datasheet specifications and application requirements.