Datenblatt-Suchmaschine für elektronische Bauteile |
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CD22203 Datenblatt(PDF) 3 Page - Intersil Corporation |
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CD22203 Datenblatt(HTML) 3 Page - Intersil Corporation |
3 / 6 page 3 CD22202, CD22203 Functional Block Diagram ÷8 60Hz REJECT CLOCK GENERATOR CHIP CLOCKS PRE EMP POWER REGULATOR 5 10 7 VDD VSS VSS VOLTAGE REF 697 770 852 941 1209 1336 1477 1633 BAND SPLIT FILTERS ZERO CROSSING DETECTORS BANDPASS FILTERS AMPLITUDE DETECTORS OUTPUT DECODER OUTPUT REGISTER TIMING CIRCUITRY DV STROBE DATA STROBE DV F.F CLR CD22202 CD22203 EARLY DETECT OUTPUT CLRDV 6 15 14 2 1 18 17 16 3 4 DATA CLEAR IN1633 DV H/B28 D1 D2 D4 D8 EN NOTE: Pin 6: Early detect output on CD22203 only. ANALOG IN PREPROCESSOR 9 BS1 BS2 12 11 13 8 ATB XEN XIN XOUT 1M Ω System Functions Analog In The Analog In pin accepts the analog input. It is internally biased so that the input signal may be either AC or DC cou- pled, as long as it does not exceed the positive supply volt- age. Proper input coupling is illustrated below. 9 VSS VDD 10pF >100k Ω (ON CHIP) 270k Ω 33k Ω ANALOG IN 1500pF OPTIONAL HIGH FREQUENCY NOISE FILTER (fC = 3.9kHz) AUDIO INPUT (+4dBm MAXIMUM) 0.01 µF CD22202, CD22203 FIGURE 1. ANALOG IN The CD22202 and CD22203 are designed to accept sinusoi- dal input waveforms, but will operate satisfactorily with any input that has the correct fundamental frequency with har- monics that are at least 20dB below the fundamental. Crystal Oscillator The CD22202 and CD22203 contain an on-board inverter with sufficient gain to provide oscillation when connected to a low cost television “color-burst” (3.579545MHz) crystal. The crystal oscillator is enabled by tying XEN high. The crys- tal is connected between XIN and XOUT. A 1M Ω resistor is also connected between these pins in this mode. ATB is a clock frequency output. Other CD22202 and CD22203 devices may use the same frequency reference by tying their ATB pins to the ATB output of a crystal connected device. XIN and XEN of the auxiliary devices must then be tied high and low, respectively. Up to ten devices may be run from a single crystal connected CD22202 and CD22203 as shown in Figure 2. |
Ähnliche Teilenummer - CD22203 |
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Ähnliche Beschreibung - CD22203 |
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