图片可能具有代表性。
产品详情请参阅规格.
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

10个与DAC7801LU在技术解决方案中的应用相关的常见问题及解答

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.