Fluke PM6690 - Page 185

Oscillator Circuits, PCB 1, sheet 5(7)
Schematic Diagrams 9-39
5
5
4
4
3
3
2
2
1
1
D D
C C
B B
A A
STD OSC ON/OFF
OVEN OSC ON/OFF
RUBIDIUM ON/OFF
PLL LOCK
LOAD PLL
AN
AN
BN
OVEN OSC ON /OF F
RUBIDIUM ON/OFF
STD OSC ON/OFF
100MHz
-5.2L
100MHz
+3.3U49
+3.3U49
S/R_ON/OFF
S/R_ON/OFF
BN
100MHz
LOAD OVEN
PLL LOCK
UPRD
UPRD
+3.3V_U4 1
10MHZ_R U BIDIUM1
+12VO
-2.1V
+3.3V_PLL
+3.3V_U4
+3.3V_U4
+12VO
+3.3V_PLL
+3.3VD
-5.2VA
+3.3VD
-5.2VA
-2.1V
-2.1V -2.1V
-2.1V
+5VD
+3.3VD
-5.2VA
+3.3VA +3.3VA
+3.3VA
-5.2VA
-12VA
-12VA
-12VA
-2.1V
+3.3V_U4
+3.3VA +3.3VA
-2.1V
-12VA-5.2VA
+3.3VA
+5VD
+3.3VD
STD OSC TRIM2
SPICLK1,2
SPIDATA1,2
AN3
A3
PRESC ON 5
PRESC TEST 5
OPTION 5
OPCLK 5
C5
+12VU7
B3
+12VA1,4,5,7
+5VA1,4,5
-12VA1,4,7,8
-5.2VA7
+3.3VA7,8
+3.3VD1,2,5,7,8
BURST5
BN3
+5VD1,2,5,7,8
SPIPLL2
SPIOVEN2
PLL LOCK 2
UPRD2
ST D OSC.
OV E N OS C.
16.3mA
16.3mA
PHASE L OCK LOOP
C218
10PF
C168
1N
R332
39K
C202
100NF
R281
1K
U48B
LVC1G04
VCC
5
GND
3
R309
47
BAV99
D26
R568
47
L8
BLM21A102S
C177
33PF
R318
47
R334
100
R287
47
L10
BLM21A102S
C5
100NF
10N
C190
C185
15pF
R270
10K
R275
10K
R294
47K
R321
10K
U5A
LTC8043
VRef
1
RFb
2
SRI
6
CLK
7
LD
5
IOut
3
10N
C211
L14
BLM21A102S
C495
NOT USED
R336
Not Used
R322
39K
&
U12E
10E104
23
24 18
17
C222
10PF
L5
BLM21A102S
C220
10PF
L52
BLM21A102S
10N
C189
10N
C225
10N
C174
&
ALVC00
U4B
6
4
5
C171
100P
R609
100
R314
47
R306
100
Q26
BC847B
C182
33PF
J2A
NOT USED MINICOAX-3
10N
C203
R9
NOT USED
R304
NOT USED
10N
C181
BAV99
D28
C210
100NF
Q20
BFS17
R296
100
C186
68P
C175
100NF
R343
68
R293
10K
L12
BLM21A102S
L13
BLM21A102S
R319
47
C498
22PF
C195
100NF
1M
R274
R303
47K
R338
100
R342
820
R337
100
C176
100P
R341
22
R315
47
BAV99
D27
10N
C207
R352
4.7K
R276
47K
C183
2.2UF-6.3V
&
U12A
10E104
4
5 8
7
10N
C226
C213
15UF-6.3V
L57
BLM21A102S
R325
47
BAV99
D29
C201
100NF
10N
C209
R272
3.3K
U7B
OPA277
V+
7
V-
4
C184
100P
R291
4.7K
C208
100NF
Q22
BFS17
R320
47
X52
&
ALVC00
U4C
8
9
10
10N
C214
R310
68
R348
100
R329
2.2K
Q25
BSR12
Q24
BSR12
10N
C494
&
U12D
10E104
25
26 15
14
R351
10
R295
100
R344
68
R346
680
10N
C206
D24
SMV1255-073
U9A
AD F4001
CP
2
RSET/FLD
1
RFINB
5
RFINA
6
REFIN
8
CLK
11
DATA
12
LE
13
MUXOUT
14
CE
10
L58
NOT USED
10N
C223
U47B
LVC1G04
VCC
5
GND
3
R608
100
BAV99
D25
X67
Q27
BC847B
R588
NOT USED
R335
47
C170
100P
R307
100
R326
100
U49B
NOT USED 1G04
VCC
5
GND
3
10N
C173
R308
100
R282
47
10N
C212
R347
22
Q21
BFS17
U49A
NOT USED 1G04
2 4
-
+
U7A
OPA277
3
2
6
1 8
R349
100
&
U12B
10E104
2
3 10
9
R333
270
R8
Not Used
R292
4.7K
L9
BLM21A102S
U6B
OPA277
V+
7
V-
4
COUNTER CIRCUIT
U11B
SpartanIIE-2
PLLLOCK
6
RBLOCK
7
10MOVEN
206
10MSTD
205
10MRB
204
100M
185
10MPLL
202
OVENCTRL
5
RBCTRL
4
STDCTRL
3
S/R_CTRL
42
A
10
AN
11
B
20
BN
21
SR
45
SRN
46
C
47
D
55
CTRL0
48
CTRL1
49
CTRL2
109
CTRL3
110
CTRL4
188
U0
77
U1
98
U2
99
U3
199
U4
200
U5
203
R277
4.7K
C178
22PF
Q19
BFS17
U4E
ALVC00
GND
7
VCC
14
10N
C216
R331
10K
B1
10 MHZ / CO-08
CV In
1
CV Out
2
+12V
3
Out
4
GND
5
R350
680
R271
220
U8C
LM358
V+
8
V-
4
+
-
U8A
LM358
2
3
1
R279
47
R311
68
Q18
BFS17
C187
47P
C193
100NF
U9B
ADF4001
CPGND
3
AGND
4
AVDD
7
DGND
9
DVDD
15
VP
16
R330
Not Used
L11
BLM41P800S
R624
2.2K
C194
100NF
R284
10K
R327
47
C179
22PF
-
+
U6A
OPA277
3
2
6
1 8
&
ALVC00
U4A
3
1
2
C169
1N
B2
10MHZ
U12F
10E104
VEE
1
VCC0
16
F2
19
VCC
11
F1
20
VCC0
21
R317
100
L6
BLM21A102S
C204
100NF
R569
150
R313
47
L7
BLM21A102S
R312
22
L3
100N
R316
100
10N
C205
R607
100
R285
10K
R286
470
R340
270
C219
100NF
R323
100
C180
33PF
C1
47P
C188
68P
R606
100
R623
470
R301
NOT USED
Q23
BFS17
R339
150
R324
100
X25
C487
22pF
L53
BLM21A102S
10N
C191
&
U12C
10E104
27
28 13
12
C172
1n
Q17
BC807-25
10N
C224
C192
100uF-6.3V
U5B
LTC8043
VDD
8
GND
4
U47A
LVC1G04
2 4
100K
R589
R305
100
1M
R280
C221
100NF
R328
120
D23
SMV1255-073
100K
R289
C215
100NF
R7
NOT USED
C217
100NF
R269
47
R278
2.2K
U48A
LVC1G04
2 4
100K
R288
R290
4.7K
R283
47K
+
-
U8B
LM358
6
5
7
&
ALVC00
U4D
11
12
13