Philips DVDR1000/001, Service Manual

Page: 186 / 317

Circuit-, IC Descriptions and List of Abbreviations
GB 186 DVDR1000 /0x1 /691 9.
9.8.3 IC7430: BA7660FS
3-channel 75
Ω
driver
BA7660FS
The BA7660FS is a 75
Ω
driver with a 6dB amplifier and three internal circuits, and provides 75
Ω
drive of composite
Y signals and C signals, as well as RGB signals. Each load is capable of driving two circuits, and a sag correction
function reduces the capacitance of the output coupling capacitor.
The input voltage is within a range of 0V to 1.5V, enabling direct connection of ordinary D / A converter output. An
internal power-saving circuit is also included which provides simultaneous muting on all three channels, and output
pin shorting protection.
•
Applications
DVDs, set top boxes and other digital video devices
•
Features
1) Can be coupled directly to D / A converter output.
2) Operates at a low power consumption (115mW typ.).
3) Internal output muting circuit.
4) Internal power-saving circuit.
5) Internal output protection circuit.
6) An internal sag correction function makes it possible
to reduce the capacitance of the output coupling
capacitor.
7) Each load is capable of driving two circuits.
8) The compact 16-pin SSOP-A package is used.
•
Absolute maximum ratings (Ta = 25C)
Parameter Symbol
Vcc
Pd
Topr
Tstg
Limits Unit
8
650
– 25 ~ + 75
– 55 ~ + 125
V
mW
°
C
°
C
Power supply voltage
Power dissipation
Operating temperature
Storage temperature
•
Recommended operating conditions (Ta = 25C)
Parameter Symbol
Vcc
Min.
4.5
Typ.
5.0
Max.
5.5
Unit
V Operating power supply voltage