BH7802K Просмотр технического описания (PDF) - ROHM Semiconductor
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BH7802K Datasheet PDF : 14 Pages
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Video ICs
BH7802K
Parameter
Symbol
Min.
Typ.
Max.
Unit
Conditions
〈FM BPF〉 (INPUT: FM PB IN, OUTPUT: BPF MONITOR L / R)
BPF L / R level difference NTSC
BPF L / R level difference PAL
∆VBPFN
– 5.0
0.0
5.0
dB
After automatic adjustment, NTSC
f = 1.505MHz, VIN = 200mVP-P
∆VBPFP
– 5.0
0.0
5.0
dB
After automatic adjustment, PAL
f = 1.605MHz, VIN = 200mVP-P
〈Lch, Rch mix input signal level 660mVP-P (RATIO 1: 1) 〉
NTSC Lch
1.30MHz insertion loss
1.15MHz attenuation
1.45MHz attenuation
1.70MHz attenuation
ATTNLC – 14.1 – 11.1 – 8.1
dB
1.30MHz + 1.70MHz
FM ALC ON
ATTNL
1.15
ATTNLC ATTNLC ATTNLC
– 9.8 – 5.3 – 2.3
dB
1.15MHz + 1.70MHz
ATTNL
1.45
ATTNLC ATTNLC ATTNLC
– 8.1 – 5.0 – 2.5
dB
1.45MHz + 1.70MHz
ATTNL
—
1.70
—
ATTNLC
– 30.0
dB
1.30MHz + 1.70MHz
NTSC Rch
1.70MHz insertion loss
ATTNRC – 15.3 – 12.3 – 9.3
dB
1.30MHz + 1.70MHz
FM ALC ON
1.55MHz attenuation
1.85MHz attenuation
1.30MHz attenuation
ATTNR
1.55
ATTNRC ATTNRC ATTNRC
– 8.8
– 5.7
– 3.4
dB
1.55MHz + 1.30MHz
ATTNR
1.85
ATTNRC ATTNRC ATTNRC
– 9.5
– 4.7
– 1.4
dB
1.85MHz + 1.30MHz
ATTNR
—
1.30
—
ATTNRC
– 30.0
dB
1.30MHz + 1.70MHz
PAL Lch
1.40MHz insertion loss
ATTPLC – 12.9
– 9.9
– 6.9
dB 1.40MHz + 1.80MHz
1.80MHz attenuation
ATTPL
—
1.80
—
ATTPLC
– 30.0
dB
1.40MHz + 1.80MHz
PAL Rch
1.80MHz insertion loss
ATTPRC – 14.3 – 11.3 – 8.3
dB 1.40MHz + 1.80MHz
1.40MHz attenuation
ATTPR
—
1.40
〈FNORM→Hi-Fi recovery delay circuit〉
—
ATTPRC
– 30.0
dB
1.40MHz + 1.80MHz
Return delay time
Delay time from input of FM PB IN
(1.30MHz, 1.70MHz 1: 1 MIX)
τFNDLY
110
125
140
ms
660mVP-P to rise of ENVE OUT
AUDIO HEAD PULSE IN
: f = 30Hz, 5VP-P, rectangular wave
〈Envelope output circuit〉 (INPUT: FM PB IN, OUTPUT: ENVE OUT)
0dB = 660mVP-P, 1.3MHz&1.70MHz MIX input
Envelope output level SP0
VENVSP0
—
0
100
mV No signal, STANDARD MODE
Envelope output level SP1
VENVSP1
2.08
2.58
3.08
V
VIN = 0dB, STANDARD MODE
Envelope output level SP2
VENVSP2
3.70
3.95
4.20
V
VIN = + 10dB, STANDARD MODE
Envelope output level EP1
VENVEP1
1.96
2.46
2.96
V
VIN = – 4dB, + 4dB MODE
9
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