Philips TDA6107AJF - Manual (Page 9)

9397 750 14728 © Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet Rev. 02 — 28 April 2005 9 of 16
Philips Semiconductors
TDA6107AJF
Triple video output amplifier
10. Application information
10.1 Cathode output
The cathode output is protected against peak currents (caused by positive voltage peaks
during high-resistance flash) of 3 A maximum with a charge content of 100
µ
C. External
protection against higher currents is described in Application note AN10227-01.
The cathode is also protected against peak currents (caused by positive voltage peaks
during low-resistance flash) of 6 A maximum with a charge content of 100 nC. External
protection against higher currents is described in
Application note AN10227-01.
The DC voltage of pin V
DD
must be within the operating range of 180 V to 210 V during
the peak currents.
10.2 Flashover protection
The TDA6107AJF incorporates protection diodes against CRT flashover discharges that
clamp the cathodes output voltage up to a maximum of V
DD
+ V
d
.
Fig 8. Output voltage [pins V
oc(1)
, V
oc(2)
and V
oc(3)
] falling edge as a function of the AC
input signal
51
49
O v (in %)
t
t
mce476
150
140
100
60
50
2.34
2.96
1.73
V oc
(V)
V
i
(V)
t
st
t oc(f)
t co(p)