CDP6872E INTERSIL [Intersil Corporation], CDP6872E Datasheet - Page 13

• Manufacturer Part Number: CDP6872E
• Description: Low Power Crystal Oscillator
• Manufacturer: INTERSIL [Intersil Corporation]

Typical Performance Curves
NOTE: Figure 39 (Duty Cycle vs R
620
580
540
500
460
420
380
340
300
260
240
220
200
180
160
140
120
100
FIGURE 35. TRANSCONDUCTANCE vs FREQUENCY
FIGURE 37. TRANSCONDUCTANCE vs FREQUENCY
10K
10K
V
Cycle but experimentation will be required to find an appropriate value. The R
tance of the crystal being used.
V
F1 = 1, F2 = 0
DD
DD
F1 = 0, F2 = 0
50
= 5V, V
50
= 5V, V
1000pF
1000pF
SS
SS
176.6
100K
= GND
= GND
CDP6872
100K
2
CDP6872
o
2
FREQUENCY (Hz)
FREQUENCY (Hz)
3
1 F
156.7 A/V
3
1 F
S
at 32kHz) should only be used for 32kHz crystals. R
1M
100
436.5 A/V
60
55
50
45
40
35
100
1M
178
0
F1 = F2 = 1, V
o
FIGURE 39. DUTY CYCLE vs R
(Continued)
EPSON PART #
C-001R32.768K-A
20
10M
DD
10M
= 5V, C
NDK PART #
180
170
160
150
140
130
180
170
160
150
140
MX-38
40
CDP6872
L
= 18pF, T
13
R
S
60
(k )
OSC IN
A
500
460
420
380
340
300
260
= 25
20
15
10
FIGURE 36. TRANSCONDUCTANCE vs FREQUENCY
FIGURE 38. TRANSCONDUCTANCE vs FREQUENCY
5
0
10K
10K
V
2
V
o
DD
C, F
F1 = 1, F2 = 1
S
DD
F1 = 0, F2 = 1
80
50
at 32kHz
CDP6872
50
= 5V, V
= 5V, V
XTAL
OSC
S
value will be proportional to the effective series resis-
1000pF
= 32.768kHz
1000pF
S
SS
SS
may be used at other frequencies to adjust Duty
100
OSC OUT
3
R
= GND
100K
= GND
CDP6872
S
CDP6872
2
2
FREQUENCY (Hz)
FREQUENCY (Hz)
120
100K
3
3
6.56 A/V
1 F
1 F
166
1M
100
100
o
311.6 A/V
177
o
10M
1M
180
170
160
150
140
130
120
110
180
170
160
150
140
130