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AD9779

Features: • 1.8/3.3 V Single Supply Operation• Low power: 950mW (IOUTFS = 20 mA; fDAC = 1 GSPS, 4× Interpolation• DNL = ± 1.5 LSB, INL = ± 5.0 LSB• SFDR =82 dBc to fOUT = 100 MHz• ACLR = 87 dBc @ 80 MHz IF• CMOS data interface with Autotracking Input Timing̶...

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SeekIC No. : 004273426 Detail

AD9779: Features: • 1.8/3.3 V Single Supply Operation• Low power: 950mW (IOUTFS = 20 mA; fDAC = 1 GSPS, 4× Interpolation• DNL = ± 1.5 LSB, INL = ± 5.0 LSB• SFDR =82 dBc to fOUT = 100...

AD9779 Data Sheet

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Part Number:
AD9779
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2024/4/28

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Product Details

Description



Features:

• 1.8/3.3 V Single Supply Operation
• Low power: 950mW (IOUTFS = 20 mA; fDAC = 1 GSPS, 4× Interpolation
• DNL = ± 1.5 LSB, INL = ± 5.0 LSB
• SFDR =82 dBc to fOUT = 100 MHz
• ACLR = 87 dBc @ 80 MHz IF
• CMOS data interface with Autotracking Input Timing
• Analog Output: Adjustable 10-30mA (RL=25 Ω to 50 Ω)
• 100-lead Exposed Paddle TQFP Package
• Multiple Chip Synchronization Interface
• 84dB Digital Interpolation Filter Stopband Attenuation
• Digital Inverse Sinc Filter




Application

• Wireless Infrastructure Direct Conversion Transmit Diversity
• Wideband Communications Systems: Point-to-Point Wireless, LMDS




Pinout

AD9779 Diagram




Specifications

Resolution (Bits) 16bit
DAC Update Rate 1GSPS
DAC Settling Time n/a
# DAC Outputs 2
DAC Type Current Out
DAC Input Format Par
Output FSR (Iout x Rload),Adj(10mA FS to 30mA FS)
Ref Int/Ext Int
Supply Vnom Multi(+1.8, +3.3)
Pwr Diss 300mW
Package QFP





Description

The AD9779 is a dual 16-bit high performance, high frequency DAC that provides a sample rate of 1 GSPS, permitting multi carrier generation up to its Nyquist frequency. It includes features optimized for direct conversion transmit applications, including complex digital modulation and gain and offset compensation.

The DAC outputs are optimized to interface seamlessly with analog quadrature modulators such as the AD8349. A serial peripheral interface (SPI) provides for programming many internal parameters and also enables read-back of status registers. The output current can be programmed over a range of 10mA to 30mA. The AD9779 is manufactured on an advanced 0.18µm CMOS process and operates from 1.8V and 3.3V supplies for a total power consumption of 950mW. It is supplied in a 100-lead QFP package.






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