SP3221E 데이터 시트보기 (PDF) - Exar Corporation
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SP3221E Datasheet PDF : 22 Pages
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VCC = +5V
+
C1 –
–5V
+5V
+
C2 –
–5V
Figure 8. Charge Pump - Phase 1
VCC = +5V
+
C1 –
Figure 9. Charge Pump - Phase 2
+
C2 –
–10V
[
T
a) C2+
1
T
2
2
C4
+ – VDD Storage Capacitor
– + VSS Storage Capacitor
C3
C4
+ – VDD Storage Capacitor
– + VSS Storage Capacitor
C3
]
+6V
0V
0V
b) C2-
T
-6V
Ch1 2.00V Ch2 2.00V M 1.00ms Ch1 1.96V
Figure 10. Charge Pump Waveforms
VCC = +5V
+
C1 –
–5V
+5V
+
C2 –
–5V
C4
+ – VDD Storage Capacitor
– + VSS Storage Capacitor
C3
Figure 11. Charge Pump - Phase 3
VCC = +5V
+10V
C4
+
+
+ – VDD Storage Capacitor
C1 –
C2 –
– + VSS Storage Capacitor
C3
Figure 12. Charge Pump - Phase 4
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (510) 668-7000 • www.exar.com
11
SP3221E_200_081816
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