Rainbow Electronics TH7887A - Manual (Page 13)

13
TH7887A
2146A–IMAGE–05/02
Figure 13. Capacitance Network for Drive Clocks
Reset gate
High level
Low level
ΦR
10
0
11
0.5
12
0.8
V
V
Typical input capacitance
10 pF
Readout register clocks
High level
Low level
ΦL1, 2
8.5
0
9
0.5
9.5
0.8
V
V
Maximum readout register
frequency
ΦF
H
– 20 23 MHz See Figure 9
Image zone to memory zone
transfer frequency ΦF
V
– 1.25 1.7 MHz See Figure 14
Table 2. Drive Clock Characteristics (Continued)
Parameter Symbol
Value
Unit Remarks Min Typ Max
60 pF 75 pF
50 pF
Φ
L1
Φ
L2
2.5 nF
1.4 nF
3.2 nF 4.9 nF 2.2 nF
3.3 nF
3.4 nF
2.5 nF
Φ
P1
Φ
P2
Φ
P3
Φ
P4
Φ
P1
Φ
P2
2.2 nF
4.4 nF
4.4 nF 4.4 nF
3.4 nF
Φ
P4
Φ
P3
3.9 nF 4.4 nF 3.2 nF Φ
M1
Φ
M2
3.2 nF
4.4 nF
4.4 nF 4.4 nF
3.9 nF
Φ
M4
Φ
M3
Φ
A
0.5 nF
0.7 nF 1.3 nF
0.7 nF
0.5 nF
Φ
P1
Φ
P2
Φ
P3
Φ
P4
Φ
A
VA