TDA8185I Datasheet, PDF (4/8 Pages) STMicroelectronics – HORIZONTALAND VERTICAL PROCESSOR

TDA8185I
ELECTRICAL CHARACTERISTICS (continued)
(VS = 5 V, VCC = 12 V, Tamb = 25 °C, unless otherwise specified)
Symbol
Parameter
Test Conditions Min. Typ. Max. Unit
COMPOSITE BLANKING AND KEY PULSE (supersandcastle)
V_K Key Pulse Output Peak Voltage
V_L Line Blanking Voltage
VF Frame Blanking Voltage
t_KS Phase Relationship between Leading Edge of Key
Pulse and Middle of Sync. Pulse
t_K
Key Pulse Duration
tF
Vertical Blanking Duration
10
V
4.25 4.5 4.75 V
2.38 2.5 2.63 V
2.5
µs
4
µs
1.4
ms
FRAME
V₂₀ Output p.p. Sawtooth Voltage
V20 Pedestal Voltage
50Hz and 60Hz
2.7
V
0.3
V
LINE
I₇
Output Current
V7 Saturation Voltage
t_L
Output Pulse Duration
SYNC. STATUS OUTPUT
I7 = 50mA
50
mA
0.4
V
29
µs
V21 Output Voltage
50Hz
60Hz
Unlock
12
V
6.25 7 7.45 V
0.3 V
OVERALL PHASE RELATION SHIP
t_O
Phase Difference between Middle of Flyback and
Middle of Sync. Pulses
2
µs
VERTICAL BLANKING OUT AND FLY. INPUT
V₂₂ Blanking Output Voltage
V₂₂ Flyback Threshold Input
I22
Flyback Current Input
4
V
5.7
V
0.1
mA
Notes :
1. With tfly = 12 µs and tI = 29 µs.
2. The TDA8185I may be operated on a 5V supply directly. A 5.5 V shunt regulator is available internally for operation on higher
supply voltage ; in this case an external limiting resistor is required.
Without the external limiting resistor care must be taken to ensure that the supply voltage does not exceed 5.5V or the regulator
will intervene and the device could be damaged.
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