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PDF BA7665FS Data sheet ( Hoja de datos )
| Número de pieza | BA7665FS | |
| Descripción | 3-channel 75 driver with Y / C MIX | |
| Fabricantes | ROHM Semiconductor | |
| Logotipo |  |
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Multimedia ICs
3-channel 75Ω driver with Y / C MIX
BA7665FS
The BA7665FS has three 75Ω driver circuits with 6dB amplifiers, and includes a Y / C MIX circuit. The IC can pro-
vide a 75Ω drive with a composite Y signal, C signal, or a Y / C MIX signal. Dual-circuit drive capacity for each load
is provided, and a sag compensation function is provided to allow use of smaller coupling capacitors.
The composite Y signal input is a sync-tip clamp input, and the chroma input is a biased input.
The three channels can be simultaneously muted, or the chroma signal only (in the case of C / Y output, only Y is
output), and output short circuit protection and power save circuits are also provided.
•Applications
Digital AV equipment, DVD and DVC players
•Features
1) Y / C MIX circuit.
2) Low power consumption (typ. 130mW).
3) Output mute circuit.
4) Power save circuit.
5) Output protection circuit.
6) Sag compensation circuit allows small output cou-
pling capacitors.
7) Two-circuit drive possible for loads.
8) Compact SSOP-A 16-pin package.
•Absolute maximum ratings (Ta = 25°C)
Parameter
Symbol
Limits
Power supply voltage
Power dissipation
VCC
Pd
8
650∗
Operating temperature
Topr
– 25 ~ + 75
Storage temperature
Tstg
– 55 ~ + 125
∗ Reduced by 6.5mW for each increase in Ta of 1°C over 25°C.
Unit
V
mW
°C
°C
•Recommended operating conditions (Ta = 25°C)
Parameter
Symbol Min. Typ.
Power supply voltage
VCC 4.5 5.0
᭺ Not designed for radiation resistance.
Max.
5.5
Unit
V
1
1 page  
Multimedia ICs
•Guaranteed design values (unless otherwise noted, Ta = 25°C, VCC = 5V)
Parameter
Symbol
Min. Typ. Max. Unit
Conditions
Voltage gain
Gv 5.5 6.0 6.5 dB f = 4.43MHz, 1VP-P
Interchannel voltage gain
∆Gv
– 0.5
0.0
0.5
dB f = 100kHz, 1VP-P
BA7665FS
•Mute SW mode settings
• MUTEA (1pin)
H 3ch MUTE
L NORMAL
• MUTEB (8pin)
H CHROMA MUTE
L NORMAL
•Pin descriptions and equivalent I / O circuits
Pin. No Pin name IN OUT Standard potential
Equivalent I / O circuit
1 MUTEA K —
8 MUTEB
—
15k
8k
Pin description
Mute control pin
When MUTE A (pin 1) goes high, all
three channels are muted at the same
time. When MUTE B (pin 8) goes
high, OUTB and the MIXOUT chroma
signals are muted.
2
INA K —
2.0V
3
4 GND — — 0V
5
Signal input pin
This is the input pin for the composite
Y signal (sync-tip clamp input).
↓
Ground pin
GND
7
INB K —
2.0V
Signal input pin
Bias-type input pin for the chroma
20k
signal. The input impedance is 20kΩ.
↓
5
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet BA7665FS.PDF ] | |
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