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AD9746

Features: ·High dynamic range, dual DACs·Low noise and intermodulation distortion·Single carrier WCDMA ACLR = 80 dBc @ 61.44 MHz IF·Innovative switching output stage permits useable outputs beyond Nyquist frequency·LVCMOS inputs with dual-port or optional interleaved single-port operation·Differen...

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SeekIC No. : 004273333 Detail

AD9746: Features: ·High dynamic range, dual DACs·Low noise and intermodulation distortion·Single carrier WCDMA ACLR = 80 dBc @ 61.44 MHz IF·Innovative switching output stage permits useable outputs beyond N...

AD9746 Data Sheet

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Part Number:
AD9746
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:

·High dynamic range, dual DACs
·Low noise and intermodulation distortion
·Single carrier WCDMA ACLR = 80 dBc @ 61.44 MHz IF
·Innovative switching output stage permits useable outputs beyond Nyquist frequency
·LVCMOS inputs with dual-port or optional interleaved single-port operation
·Differential analog current outputs are programmable from 8.6 mA to 31.7 mA full scale
·Auxiliary 10-bit current DACs with source/sink capability for external offset nulling
·Internal 1.2 V precision reference voltage source
·Operates from 1.8 V and 3.3 V supplies
·315 mW power dissipation
·Small footprint, Pb-free, 72-Lead LFCSP




Application

·Wireless infrastructure:
·WCDMA, CDMA2000, TD-SCDMA, WiMAX
·Wideband communications:
·LMDS/MMDS, point-to-point
·Instrumentation:
·RF signal generators, arbitrary waveform generators




Pinout

Connection Diagram

AD9746 Diagram




Specifications

Parameter With Respect to Rating
AVDD33, DVDD33
DVDD18, CVDD18
AVSS
DVSS
CVSS
REFIO
IOUT1P, IOUT1N, IOUT2P, IOUT2P, AUX1P, AUX1N, AUX2P, AUX2N
P1D15 to P1D0, P2D15 to P2D0
CLKP, CLKN
RESET, CSB, SCLK, SDIO, SDO
Junction Temperature
Storage Temperature		 AVSS DVSS CVSS
AVSS DVSS CVSS
DVSS CVSS
AVSS CVSS
AVSS DVSS
AVSS
AVSS
DVSS
CVSS
DVSS		 −0.3 V to +3.6 V
−0.3 V to +1.98 V
−0.3 V to +0.3 V
−0.3 V to +0.3 V
−0.3 V to +0.3 V
−0.3 V to AVDD33 + 0.3 V
−1.0 V to AVDD33 + 0.3 V
−0.3 V to DVDD33 + 0.3 V
−0.3 V to CVDD18 + 0.3 V
0.3 V to DVDD33 + 0.3 V
125°C
−65°C to +150°C


Resolution (Bits) 14bit
DAC Update Rate 250MSPS
DAC Settling Time n/a
# DAC Outputs 6
DAC Type Current Out
DAC Input Format Par
Output FSR Adj(FS Current)
Ref Int/Ext Int/Ext
Supply Vnom Multi(+1.8, +3.3)
Pwr Diss 355mW
Package CSP





Description

The AD9741/AD9743/AD9745/AD9746/AD9747 are pin-compatible, high dynamic range, dual digital-to-analog converters (DACs) with 8-/10-/12-/ 14-/16-bit resolutions and sample rates of up to 250 MSPS. The devices include specific features for direct conversion transmit applications, including gain and offset compensation, and they interface seamlessly with analog quadrature modulators, such as the ADL5370.
A proprietary, dynamic output architecture permits synthesis of analog outputs even above Nyquist by shifting energy away from the fundamental and into the image frequency.

Full programmability is provided through a serial peripheral interface (SPI) port. In addition, some pin-programmable features are offered for those applications without a controller.






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