TDA6108AJF Datasheet, PDF (9/16 Pages) NXP Semiconductors – Triple video output amplifier

Philips Semiconductors
TDA6108AJF
Triple video output amplifier
2.96
V_i
(V)
2.34
t
1.73
t_st
150
140
V_oc
(V)
100
O_v (in %)
51
60
50
49
t
t_oc(f)
t_co(p)
mce476
Fig 8. Output voltage [pins V_oc(1), V_oc(2) and V_oc(3)] falling edges as a function of the AC
input signal
10. Application information
10.1 Flashover protection
For sufficient flashover protection it is necessary to apply an external diode and 100 Ω
resistor for each channel; see Application Note AN10227-01.
To limit the diode current an external 1 kΩ carbon high-voltage resistor in series with the
cathode output and a 2 kV spark gap are needed (for this resistor value, the CRT has to
be connected to the main PCB).
V_DD must be decoupled to GND:
1. With a capacitor > 20 nF with good HF behavior (e.g. foil); this capacitor must be
placed as close as possible to pins V_DD and GND and must be within 5 mm
2. With a capacitor > 3.3 µF on the picture tube base print, depending on the CRT size.
9397 750 14729
Product data sheet
Rev. 03 — 20 April 2005
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
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