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CD74HC7046AMM 数据表(PDF) 5 Page - Texas Instruments

部件名 CD74HC7046AMM
功能描述  Phase-Locked Loop with VCO and Lock Detector
PDF  29 Pages
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制造商  TI [Texas Instruments]
网页  http://www.ti.com
标志 TI - Texas Instruments

CD74HC7046AMM 数据表(HTML) 5 Page - Texas Instruments

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FIGURE 4. PHASE COMPARATOR 2: AVERAGE OUTPUT
VOLTAGE vs INPUT PHASE DIFFERENCE:
VDEMOUT = VPC2OUT = (VCC/π) (φSIGIN - φCOM-
PIN); φDEMOUT = (φSIGIN - φCOMPIN)
FIGURE 5. TYPICAL WAVEFORMS FOR PLL USING PHASE
COMPARATOR 2, LOOP LOCKED AT fo
FIGURE 6. CD74HC/HCT7046A LOCK DETECTOR CIRCUIT
FIGURE 7. WAVEFORM PRESENT AT LOCK DETECTOR CAPACITOR WHEN IN LOCK
VCC
VDEMOUT (AV)
1/2 VCC
0
-360o
0o
φ
DEMOUT
360o
SIGIN
COMPIN
VCOOUT
PC2OUT
VCOIN
VCC
GND
PCPOUT
HIGH IMPEDANCE OFF - STATE
UP
FF
DN
FF
COMPIN
SIGIN
PHASE DIFFERENCE
7046 LOCK DETECTOR CIRCUITRY
1.5k
Ω
150
Ω
PIN 1
LOCK DETECTOR
OUTPUT
PIN 15
CLD
LOCK DETECTOR
CAPACITOR
VCAP
VTH
LOCK
DETECTOR
OUTPUT
PIN 1
CLD
PIN 15
LOCK
DETECTOR
CAPACITOR
1.5k
Ω
150
Ω
CD74HC7046A, CD74HCT7046A



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