AD9765-EBZ Analog Devices Inc, AD9765-EBZ Datasheet
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AD9765-EBZ
Specifications of AD9765-EBZ
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AD9765-EBZ Summary of contents
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... One Technology Way • P.O. Box 9106 • Norwood, MA 02062-9106 • 781/329-4700 • World Wide Web Site: http://www.analog.com Using the AD9709, AD9763, AD9765, AD9767 Dual DAC Evaluation Board GENERAL DESCRIPTION The AD9709, AD9763, AD9765 and AD9767 are high- speed, high-performance dual DACs (8-, 10-, 12-, 14- bits) designed for I/Q transmit applications and for appli- cations where board space premium ...
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... DACs (inter- leaving mode). DATA INPUT ON AD9763/AD9765/AD9767 JP9 DCLKIN1 DCLKIN2 JP16 DVDD JP5 I C JP4 I C JP3 –2– JP6 DVDD H L JP2 D PRE JP1 Q CLK CLR 1 74HC112 JP7 DGND;8 DVDD;16 DVDD H L WRT1/IQWRT CLK1/IQCLK CLK2/IQRESET WRT2/IQSEL AD9709/AD9763/AD9765/AD9767 ter- REV. 0 ...
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... REV. 0 detailed information on the functions of these inputs, as well as the DAC input and output timing, see the AD9709, AD9763, AD9765, and AD9767 data sheets. Operation with a single clock can be achieved by select- ing JP16 or JP9 for the clock source and inserting JP5 in the C position, and removing JP3. JP4 can be used to control IQRESET, but for most evaluations can simply be tied low (Position I) ...
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... This is the mea- sured data hold time. REFERENCE OPERATION The AD9709, AD9763, AD9765, AD9767 contain a single 1.2 V reference that is shared by both of the DACs on the chip. This reference drives two control amplifiers that independently control the full-scale output currents in each of the two DACs ...
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... REFERENCE FSADJ I 2k REF Figure 8. External Reference Configuration MASTER/SLAVE RESISTOR MODE, GAINCTRL The AD9709, AD9763, AD9765, AD9767 all allow the gain of each channel to be independently set by connecting one R resistor to FSADJ1 and another R SET FSADJ2. To add flexibility and reduce system cost, a single R ...
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... TROUBLESHOOTING The dual DAC evaluation board has been designed to allow optimum performance from the AD9709, AD9763, AD9765, AD9767. However, many factors can contribute to suboptimal performance. The following is a list of potential problems and their likely sources. Problem—No signal or reduced signal on the output. ...
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RED TP10 B1 L1 DVDDIN BEAD BAN-JACK B2 BAN-JACK WHT TP29 WRT1IN S1 IQWRT DGND;3,4,5 WHT TP30 CLK1IN S2 IQCLK DGND;3,4,5 WHT TP31 CLK2IN S3 RESET DGND;3,4,5 WHT TP32 WRT2IN S4 IQSEL DGND;3,4,5 WHT TP33 SLEEP 1 R13 50 2 ...
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AN-555 RP3 RCOM 22 DVDD INP1 RP5 RP5, 10 INP2 RP5, 10 INP3 RP5, 10 INP4 RP5, ...
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... DUTP6 6 DB8P1 REFIO DB7P1 GAINCTRL DUTP7 7 DUTP8 DB6P1 FSADJ2 8 DUTP9 DB5P1 IA2 9 DUTP10 10 DB4P1 IB2 U2 AD9763/ DUTP11 11 DB3P1 ACOM AD9765/ DUTP12 DB2P1 SLEEP 12 AD9767 DUTP13 DB1P1 DB0P2 13 DUTP14 DB0P1 DB1P2 14 15 DCOM1 DB2P2 16 DVDD1 DB3P2 WRT1 WRT1 DB4P2 17 CLK1 CLK1 DB5P2 ...
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AN-555 Figure 13. Assembly, Top Side Figure 14. Assembly, Bottom Side –10– REV. 0 ...
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REV. 0 Figure 15. Layer 1, Top Side Figure 16. Layer 2, Ground Plane –11– AN-555 ...
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AN-555 Figure 17. Layer 3, Power Plane Figure 18. Layer 4, Bottom Side –12– REV. 0 ...