Video ICs
BH7801BK
•Electrical characteristics (unless otherwise noted, Ta = 25°C, UNREG – VCC = + 10V, UNREG – VEE = – 10V)
• Output switch control (W2D3, W2D4, W2D5)
• BS L2 Through / LINE MUTE control (W2D6, W2D7)
• LINE AMP gain control (W2D1, W2D2)
• FM output cotrol (W1D3)
• FM OUT switch control (W1D4, W1D5, W1D6)
• NTSC / PAL control (W1D8)
• Recording MUTE (W1D7)
• Hi-Fi PB MUTE (W2D8)
• Normal input switch control (W3D4, W3D5)
• Hi-Fi ALC control (W3D8)
• ENVELOPE GAIN (Typ. / 4dB) control (W4D4)
• FM detector level control (W4D1, W4D2)
• ENVE characteristic control (W4D3)
• FM TEST control (W4D6)
• FM ALC control (W4D5)
• MUTE control (pin 32)
: STEREO
: BSL2 Through / LINE MUTE OFF
: Typ. ( + 9.8dB)
: FM OUTPUT ON
: FM REC output, MIX ratio 1 ( – 12.5dB)
: NTSC
: Recording MUTE
: OFF
: Hi-Fi MIX
: OFF
: Typ.
: Typ.
: FNORM detect, no ENVE output
: OFF
: ALC ON
: L (MUTE)
Signal frequency f = 1kHz
• INPUT condition 1: TU IN VIN = – 20dBV, LINE1 / LINE2 / BS VIN = – 10.2dBV
• INPUT condition 2: TU IN VIN = – 9.8dBV, LINE1 / LINE2 / BS VIN = 0.0dBV
• INPUT condition 3: TU IN VIN = – 2.0dBV, LINE1 / LINE2 / BS VIN = 8.0dBV
MODEM carrier frequency NTSC Lch 1.30MHz
MODEM carrier frequency NTSC Rch 1.70MHz
MODEM carrier frequency PAL Lch 1.40MHz
MODEM carrier frequency PAL Rch 1.80MHz
fsc
NTSC
3.579545MHz
fsc
PAL
4.433619MHz
6