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MC14046B: Phase Locked Loop

Datasheet: Phase Locked Loop
Rev. 14 (132kB)
Product Overview
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The MC14046B phase locked loop contains two phase comparators, a voltage-controlled oscillator (VCO), source follower, and zener diode. The comparators have two common signal inputs, PCAin and PCBin. Input PCAin can be used directly coupled to large voltage signals, or indirectly coupled (with a series capacitor) to small voltage signals. The self-bias circuit adjusts small voltage signals in the linear region of the amplifier. Phase comparator 1 (an exclusive OR gate) provides a digital error signal PC1out, and maintains 90 phase shift at the center frequency between PCAin and PCBin signals (both at 50% duty cycle). Phase comparator 2 (with leading edge sensing logic) provides digital error signals, PC2out and LD, and maintains a 0 phase shift between PCAin and PCBin signals (duty cycle is immaterial). The linear VCO produces an output signal VCOout whose frequency is determined by the voltage of input VCOin and the capacitor and resistors connected to pins C1A, C1B, R1, and R2. The source-follower output SFout with an external resistor is used where the VCOin signal is needed but no loading can be tolerated. The inhibit input Inh, when high, disables the VCO and source follower to minimize standby power consumption. The zener diode can be used to assist in power supply regulation.

Applications include FM and FSK modulation and demodulation, frequency synthesis and multiplication, frequency discrimination, tone decoding, data synchronization and conditioning, voltage-to-frequency conversion and motor speed control.
Features
 
  • Buffered Outputs Compatible with HTL and Low-Power TTL
  • Diode Protection on All Inputs
  • Supply Voltage Range = 3.0 to 18 V
  • Pin-for-Pin Replacement for CD4046B
  • Phase Comparator 1 is an Exclusive Or Gate and is Duty Cycle Limited
  • Phase Comparator 2 switches on Rising Edges and is not Duty Cycle
  • Pb-Free Packages are Available*
Technical Documentation & Design Resources
Data Sheets (1) Package Drawings (1)
Availability & Samples
Specifications
Case Outlines
Product
Status
Compliance
Description
Package
MSL
Container
Budgetary Price/Unit
Type
Case Outline
Type
Temperature
Type
Qty.
MC14046BDWG Active
Pb-free
Halide free
MC14046B SOIC-16W 751G-03 3 260 Tube 47 $0.2995
MC14046BDWR2G Active
Pb-free
Halide free
MC14046B SOIC-16W 751G-03 3 260 Tape and Reel 1000 $0.2687
Market Leadtime (weeks) : 2 to 4
ON Semiconductor   (2020-09-02 00:00) : 235
FutureElectronics   (2020-08-19 00:00) : >1K
Avnet   (2020-08-19 00:00) : <1K
Market Leadtime (weeks) : 2 to 4
PandS   (2020-09-14 00:00) : <1K
FutureElectronics   (2020-08-19 00:00) : >1K
ON Semiconductor   (2020-09-02 00:00) : 9,000

Product
Description
Pricing ($/Unit)
Compliance
Status
Input Level
Output Level
fMax Typ (MHz)
VCC Typ (V)
Duty Cycle (%)
Package Type
MC14046BDWG  
 $0.2995 
Pb
H
 Active   
CMOS
CMOS
1.9
18
50
SOIC-16W
MC14046BDWR2G  
 $0.2687 
Pb
H
 Active   
CMOS
CMOS
1.9
18
50
SOIC-16W
Case Outlines
751G-03   
Packages
MC14046B: Phase Locked Loop
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