參數(shù)資料
型號(hào): U2860B-MFPG3
廠商: ATMEL CORP
元件分類: 接收器
英文描述: Dual-Channel FM Sound Demodulator for TV Systems
中文描述: FM, AUDIO DEMODULATOR, PDSO14
封裝: SO-14
文件頁(yè)數(shù): 1/14頁(yè)
文件大?。?/td> 336K
代理商: U2860B-MFPG3
Rev. 4794A–TVVCR–02/04
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.
Figure 1.
Block Diagram
Loop
filter 1
VCO 1
Mute
1
3
4
13
11
12
Supply
8
7
C
stab
VCO
offset
10
VCO offset
Loop
filter 2
VCO 1
V
S
Squelch
Squelch (second carrier)
14
Squelch
V
in1
Mute
V
AF1
V
AF2
6
9
R
(optional)
V
in2
Dual-Channel
FM Sound
Demodulator for
TV Systems
U2860B-M
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