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Numéro de référence | AD9993 | ||
Description | Integrated Mixed-Signal Front End | ||
Fabricant | Analog Devices | ||
Logo | |||
1 Page
Data Sheet
Integrated Mixed-Signal Front End (MxFE)
AD9993
FEATURES
Quad 14-bit 250 MSPS ADC
SFDR = 83 dBc at 87 MHz input
Dual 14-bit 500 MSPS DAC
SFDR = 75 dBc at 20 MHz output
On-chip PLL clock synthesizer
Low power
1536 mW, 1 GHz master clock, on-chip synthesizer
500 MHz double data rate (DDR)
LVDS interfaces for DACs and ADCs
Small 12 mm × 12 mm lead-free BGA package
APPLICATIONS
Point to point microwave backhaul radios
Wireless repeaters
GENERAL DESCRIPTION
The AD9993 is a mixed-signal front-end (MxFE®) device that
integrates four 14-bit ADCs and two 14-bit DACs. Figure 1
shows the block diagram of the MxFE. The MxFE is
programmable using registers accessed via a serial peripheral
interface (SPI). ADC and DAC datapaths include FIFO buffers
to absorb phase differences between LVDS lane clocks and the
data converter sampling clocks.
The MxFE DACs are part of the Analog Devices, Inc., high
speed CMOS DAC core family. These DACs are designed to be
used in wide bandwidth communication system transmitter
(Tx) signal chains.
The MxFE ADCs are multistage pipelined CMOS ADC cores
designed for use in communications receivers.
FUNCTIONAL BLOCK DIAGRAM
2 14
ADC_A
2 14
ADC_B
14
4
DCO CLOCK
STROBE
LVDS
BUFFER
DOUT3A_x TO DOUT0A_x
DOUT3B_x TO DOUT0B_x
DOUT3C_x TO DOUT0C_x
DOUT3D_x TO DOUT0D_x
DCO_x
STROBE_x
2 14
ADC_C
DIGITAL
–ADC AND DAC
DATAPATHS
14
DIN6A_x TO DIN0A_x
2
ADC_D
14
–CONTROLS
–SPI REGISTERS
LVDS
BUFFER
DIN6B_x TO DIN0B_x
–FIFO BUFFERS
DCI CLOCK
DCI_x
2 14
DAC_A
2 14
DAC_B
4 SPI_SCLK, SPI_CS, SPI_SDI, SPI_SDO
RST
ALERT
PLL
31.25MHz
OR
62.5MHz
DIV
0
1
1GHz
CLOCK GENERATOR
Figure 1.
MxFE
AD9993
Rev. A
Document Feedback
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responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
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One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
©2014 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com
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Pages | Pages 30 | ||
Télécharger | [ AD9993 ] |
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