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PDF BA7660FS Data sheet ( Hoja de datos )
| Número de pieza | BA7660FS | |
| Descripción | 3-channel 75 driver | |
| Fabricantes | ROHM Semiconductor | |
| Logotipo |  |
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Multimedia ICs
3-channel 75Ω driver
BA7660FS
The BA7660FS is a 75Ω driver with a 6dB amplifier and three internal circuits, and provides 75Ω 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 = 25°C)
Parameter
Power supply voltage
Power dissipation
Symbol
Vcc
Pd
Operating temperature
Storage temperature
Topr
Tstg
Limits
8
650
– 25 ~ + 75
– 55 ~ + 125
Unit
V
mW
°C
°C
•Recommended operating conditions (Ta = 25°C)
Parameter
Symbol
Operating power supply voltage
Vcc
Min.
Typ.
Max.
Unit
4.5 5.0 5.5 V
1
1 page  
Multimedia ICs
•Measurement condition settings table
Item
Symbol
SW1
Switch conditions
SW2
SW4
SW7
Circuit current
ICC 2 1 1 1
Maximum
output level
OUTA
OUTB
OUTC
VOM1 3 2 1 1
VOM2 3 1 2 1
VOM3 3 1 1 2
OUTA
GV1 3 2 1 1
Voltage gain
OUTB
GV2 3 1 2 1
OUTC
GV3 3 1 1 2
Frequency
characteristics
OUTA
OUTB
OUTC
GF1 3 2 1 1
GF2 3 1 2 1
GF3 3 1 1 2
OUTA→OUTB
CT1
3211
OUTA→OUTC
CT2
3211
Crosstalk between OUTB→OUTA
CT3
3121
channels
OUTB→OUTC
CT4
3121
OUTC→OUTA
CT5
3112
OUTC→OUTB
CT6
3112
OUTA
MT1 1 2 1 1
Muting attenuation
OUTB
MT2 1 1 2 1
OUTC
MT3 1 1 1 2
∗ The muting switching level is substituted by carrying out the above measurement at High = 3.3V, Low = 1.2V.
BA7660FS
SW16
1
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
Measurement
method
Note 1
Note 2
Note 3
Note 4
Note 5
Note 6
Note 1: Measure the circuit current when no signal is present.
Note 2: Apply a sine wave of f = 1kHz to the input, and adjust the input
level so that the output distortion is 1%. At this time, set the out-
put voltage to the maximum output level of VOM [VP-P].
Note 3: Measure the output VO [VP-P] with a sine wave of f = 4.43MHz,
1VP-P applied to the input. Voltage gain GV is:
GV = 20 Log (VO / VIN) [dB]
Note 4: Measure the outputs VO7 and VO1 [VP-P] each with sine waves of
f = 7MHz, 1VP-P and f = 1MHz, 1VP-P applied to the input. Voltage
frequency GF is:
GF = 20 Log (VO7 / VO1) [dB]
Note 5: Measure the output VO [VP-P] with a sine wave of f = 4.43MHz,
1VP-P applied to the input. Interchannel crosstalk CT is:
CT = 20 Log (VO / VIN) [dB]
Note 6: Measure the output VO [VP-P] with a sine wave of f = 4.43MHz,
1VP-P applied to the input. The muting attenuation MT is:
MT = 20 ∗ Log (VO / VIN) [dB]
5
5 Page | ||
| Páginas | Total 6 Páginas | |
| PDF Descargar | [ Datasheet BA7660FS.PDF ] | |
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