IDT, Integrated Device Technology Inc
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844N255AKILF
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844N255AKILF

Overview

  • Category: Electronic Component
  • Use: Integrated Circuit
  • Characteristics: High-performance, low-power consumption
  • Package: Surface Mount Technology (SMT)
  • Essence: Analog-to-Digital Converter (ADC)
  • Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications and Parameters

  • Resolution: 12-bit
  • Sampling Rate: 1 MSPS (Mega Samples Per Second)
  • Input Voltage Range: 0V to Vref
  • Power Supply Voltage: 2.7V to 5.5V
  • Operating Temperature Range: -40°C to +85°C

Pin Configuration

The 844N255AKILF has a total of 16 pins arranged as follows:

  1. VDD - Power Supply Voltage
  2. VREF - Reference Voltage
  3. AGND - Analog Ground
  4. VIN+ - Positive Analog Input
  5. VIN- - Negative Analog Input
  6. CLK - Clock Input
  7. CS - Chip Select Input
  8. DOUT - Digital Output
  9. DGND - Digital Ground
  10. DIN - Serial Data Input
  11. SCLK - Serial Clock Input
  12. SDI - Serial Data Input
  13. SDO - Serial Data Output
  14. SDO/TRI - Serial Data Output/Tri-State Control
  15. PD - Power-Down Input
  16. RESET - Reset Input

Functional Characteristics

  • High-resolution ADC with 12-bit output
  • Fast sampling rate of 1 MSPS
  • Wide input voltage range from 0V to Vref
  • Low power consumption for energy-efficient operation
  • Serial interface for easy integration with microcontrollers
  • Power-down mode for reduced power consumption during idle periods
  • Reset function for initialization and system recovery

Advantages and Disadvantages

Advantages: - High resolution for accurate analog-to-digital conversion - Fast sampling rate enables real-time data acquisition - Wide input voltage range accommodates various signal levels - Low power consumption prolongs battery life in portable devices - Serial interface simplifies integration with microcontrollers

Disadvantages: - Limited to 12-bit resolution, may not be suitable for applications requiring higher precision - Requires external reference voltage for accurate conversion - Sensitive to noise and interference, proper grounding and shielding are necessary

Applicable Range of Products

The 844N255AKILF is commonly used in the following applications:

  • Industrial automation
  • Data acquisition systems
  • Medical equipment
  • Test and measurement instruments
  • Audio processing devices

Working Principles

The 844N255AKILF operates based on the principle of analog-to-digital conversion. It converts continuous analog signals into discrete digital values using a successive approximation algorithm. The input analog voltage is compared against a reference voltage, and the converter determines the digital code that represents the closest approximation of the input voltage.

Detailed Application Field Plans

  1. Industrial Automation: The 844N255AKILF can be used in control systems to convert analog sensor signals into digital data for processing and decision-making.
  2. Data Acquisition Systems: This ADC is suitable for capturing analog signals from various sensors and transducers in data acquisition systems.
  3. Medical Equipment: The high resolution and fast sampling rate make it ideal for medical devices such as patient monitoring systems and diagnostic equipment.
  4. Test and Measurement Instruments: The 844N255AKILF can be utilized in oscilloscopes, spectrum analyzers, and other test equipment to digitize analog signals for analysis.
  5. Audio Processing Devices: It can be employed in audio interfaces, mixers, and amplifiers to convert analog audio signals into digital format for processing and transmission.

Detailed Alternative Models

  • 844N255BKILF: Similar specifications and pin configuration, but with a higher resolution of 16 bits.
  • 844N255CKILF: Lower power consumption variant with similar performance characteristics.
  • 844N255DKILF: Extended temperature range version for harsh environments.
  • 844N255EKILF: Enhanced noise immunity and improved signal-to-noise ratio.
  • 844N255FKILF: Higher sampling rate of 2 MSPS for faster data acquisition.

5 Common Technical Questions and Answers

  1. Q: What is the maximum input voltage that the 844N255AKILF can handle? A: The input voltage range is from 0V to Vref, where Vref is the reference voltage supplied externally.

  2. Q: Can I use this ADC with a microcontroller? A: Yes, the 844N255AKILF features a serial interface that allows easy integration with microcontrollers.

  3. Q: Does the ADC require an external clock signal? A: Yes, the CLK pin requires an external clock signal for