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Date: 12th May 2011

7mmx 7mm DAC from ADI deliver data rate of 1.2 GSPS at low-noise of -164 dBm/Hz

Analog Devices, Inc. has introduced a 16-bit D/A converter, the AD9146 D/A converter delivering a data throughput rate of 1.2 GSPS (gigabits per second) and a low-noise specification of -164 dBm/Hz, in a 7 mm x 7 mm LFCSP package. The AD9146 D/A converter also integrates an 8-bit LVDS (low-voltage differential signaling) interface and low-noise PLL (phase-locked loop) clock multiplier, which allow design engineers to implement up to six transmit channels using half the PCB space previously required, says ADI.

The AD9146 features 2x and 4x interpolators with fine NCO (numerically-controlled oscillator) modulation that enables baseband signals to be placed anywhere in the D/A converter bandwidth to ease design engineers' system frequency planning. The low noise figure and an IMD (inter-modulation distortion) of 81 dBc at 100 MHz help this component to achieve a superior ACLR (adjacent-channel leakage ratio) of 82 dBc at 122 MHz IF for W-CDMA single-channel applications.

AD9146 16-bit D/A Converter with 8-bit LVDS Key Features:
Flexible LVDS interface allows byte or nibble load
Single-carrier W-CDMA ACLR = 82 dBc @ 122.88-MHz IF
Analog output: adjustable 8.7 mA to 31.7 mA, RL = 25 O to 50 O
Gain and phase adjustment for sideband suppression
Multiple chip synchronization interfaces

 
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