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5<br />
DDS R-F FREQUENCY GENERATOR<br />
SERIAL DIRECT DIGITAL SYNTHESIZER<br />
5<br />
4<br />
4<br />
3<br />
D D<br />
FULL SCALE ADJ R:<br />
IOUT(Full Scale)=<br />
12.5x(Vrefin/Rset)<br />
P-7, DDSCLK_20MHZ_BUF<br />
P-8, SPI_DDS_CLOCK_FPGA_OUT_BUF<br />
P-8, SPI_DDS_DATA_FPGA_OUT_BUF<br />
P-3,4,6,7,8,9,15, DGND<br />
C C<br />
P-8, /SPI_DDS_FSYNC_FPGA_OUT_BUF<br />
FULL SCALE ADJ.<br />
3.9K is min.<br />
DGND DGND DGND<br />
SWITCHED_RF_OSC<br />
3.3MHz corner,<br />
20 dB/decade.<br />
GCGND<br />
B B<br />
R177<br />
1K<br />
0805<br />
R211<br />
100<br />
1206<br />
C30 10pF<br />
2.21K<br />
R282<br />
GCGND<br />
BEGINS NEW WORD.<br />
"RF_OSC"<br />
TL15<br />
GCGND<br />
18-20 V P-P<br />
40dB/decade<br />
after 3.6MHz<br />
R-F_OSC P-11,<br />
"Switched R-F Ref"<br />
GCGND<br />
TO FET DRIVERS<br />
A A<br />
3<br />
"GCGND" "EXT SINE IN"<br />
TL38 TL33<br />
GCGND<br />
3.6MHz corner,<br />
20dB/decade.<br />
GCGND<br />
2<br />
8-10 Volts P-P+<br />
2.5 Volt Offset.<br />
"DDS BUF"<br />
TL14<br />
EXTERNAL SINE REF INPUT<br />
2<br />
+5V=EXT SINE<br />
0V =DDS OUT<br />
"SINE SEL"<br />
TL34<br />
GCGND<br />
P-3, /TOP_COVER_RF_HV_ON<br />
C99 C35<br />
1uF 0.1 50V<br />
+5VA_GC<br />
GCGND<br />
P-13,<br />
P-4,11,12,13,<br />
H-V SINE REF DISABLE<br />
P-11,12,13, -13V_GC GCGND<br />
C149<br />
GCGND GCGND<br />
GCGND<br />
GCGND<br />
GCGND<br />
+5VA_GC<br />
"DDS"<br />
P-13,<br />
C38<br />
.01UF<br />
"DGND"<br />
0.0 R202<br />
4MA MAX NOM<br />
R183<br />
150<br />
GCGND<br />
+13V_GC<br />
DDS_RF_DC<br />
-13V_GC P-11,12,13,<br />
P-11,12,13,<br />
DDS_RF_AC<br />
R284<br />
10K<br />
0.1 50V<br />
i2<br />
R201<br />
100<br />
1206<br />
R83<br />
100<br />
1206<br />
GCGND<br />
GCGND<br />
0.1 50V<br />
C97<br />
GCGND<br />
GCGND<br />
+5VA_GC<br />
16<br />
14<br />
nc c2 2<br />
3<br />
no c1 15<br />
i1 1<br />
C98<br />
1uF<br />
IOUT<br />
ADG413BR<br />
U41A<br />
14<br />
1<br />
FS ADJ<br />
2<br />
REFIN<br />
3<br />
REFOUT<br />
6<br />
MCLK<br />
7<br />
SCLK<br />
8<br />
SDATA FSYNC 9<br />
FSEL 10<br />
PSEL0 11<br />
PSEL1 12<br />
COMP 16<br />
C34<br />
.01UF<br />
U24<br />
R175<br />
1K<br />
0805<br />
C27<br />
R176<br />
1K<br />
0805<br />
10pF<br />
DDS<br />
R80<br />
4.99K<br />
0603<br />
C102 .01UF<br />
AD9832BRU<br />
TSSOP16<br />
TL16<br />
R68<br />
150<br />
0.0 R81<br />
TL17<br />
0.0 R206<br />
R70<br />
100<br />
1206<br />
2<br />
3<br />
C95 0.1 50V<br />
-<br />
1<br />
+<br />
U19A AD826AR<br />
C148<br />
0.1 50V<br />
6<br />
5<br />
AD826AR<br />
8<br />
-<br />
+<br />
4<br />
7<br />
U19B<br />
DVDD 4<br />
5<br />
DGND<br />
13 AVDD<br />
AGND<br />
15<br />
TL36<br />
TL37<br />
R285<br />
10K<br />
8<br />
4<br />
6<br />
no<br />
11<br />
nc<br />
U41B<br />
ADG413BR<br />
i2 8<br />
c2 7<br />
c1 10<br />
i1 9<br />
R290<br />
10K<br />
"+5V"<br />
TL39<br />
GCGND<br />
+5V P-3,4,6,7,8,9,15,<br />
DDS_RF_AC_SW<br />
1<br />
GCGND<br />
P-11,12,13,<br />
+13V_GC<br />
DDS R-F FREQUENCY GENERATOR<br />
<strong>Thermo</strong> 355 River Oaks Pkwy, San Jose, CA 95134-1991<br />
ELECTRON CORPORATION<br />
Title<br />
Size Document Number Rev<br />
B<br />
C150<br />
0.1 50V<br />
GND 5<br />
VSS 4<br />
VCC<br />
12<br />
VDD<br />
13<br />
SCH, TOP COVER BOARD<br />
C151<br />
0.1 50V<br />
97055-91040 D<br />
Date: Wednesday, July 27, 2005<br />
Sheet 10 of 17<br />
1
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