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U2860B-MFPG3

器件名称: U2860B-MFPG3
功能描述: Dual-Channel FM Sound Demodulator for TV Systems
文件大小: 336.16KB    共14页
生产厂商: ATMEL
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简  介:Features Two Alignment-free PLL FM Demodulators, Automatic Lock-in on the Received Sound Carrier Frequency Mono and Dual Channel Application Sound IF Inputs Provided for Ceramic Filters Automatic Mute for Second Sound Channel (Squelch) Mute Function for Both Sound Channels 5-V Supply Voltage, Low-power Consumption Few External Components Description The U2860B-M is a dual-channel FM sound demodulator realized with Atmel ’s advanced bipolar process. All TV FM standards, from 4.5 MHz up to 6.5 MHz (standard M, B/G, I, D/K) can be processed with high performance. The circuit is alignment-free and has a minimum number of external components. With 5 V supply voltage, the U2860B-M is suitable for TV, VCR and multimedia applications. Dual-Channel FM Sound Demodulator for TV Systems U2860B-M Figure 1. Block Diagram VS Cstab 13 12 Supply 11 8 7 VAF1 Vin1 1 VCO 1 Loop filter 1 Mute 3 Mute VCO offset 10 VCO offset Rref (optional) Vin2 14 VCO 1 Loop filter 2 6 VAF2 Squelch 4 Squelch Squelch (second carrier) 9 Rev. 4794A–TVVCR–02/04 Pin Configuration Figure 2. Pinning Vin1 NC Vmute Vsque NC VAF2 VAF1 1 2 3 4 5 6 7 14 13 12 11 10 9 8 Vin2 VS GND Cstab Rref C9 C8 Pin Description Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Symbol Vin1 NC Vmute Vsque NC VAF2 VAF1 C8 C9 Rref Cstab GND VS Vin2 Function Intercarrier input of sound channel 1 (5.5 MHz) Not connected Mute for sound channel 1+2 “on/off” Automatic mute for 2nd sound channel (squelch) “on/off” Not connected Aud……
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器件名 功能描述 生产厂商
U2860B-MFPG3 Dual-Channel FM Sound Demodulator for TV Systems ATMEL
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