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MC14046B_14 Datasheet, PDF (1/8 Pages) ON Semiconductor – Phase Locked Loop | |||
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MC14046B
Phase Locked Loop
The MC14046B phase locked loop contains two phase comparators,
a voltageâcontrolled 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 selfâbias 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 sourceâfollower 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,
voltageâtoâfrequency conversion and motor speed control.
Features
⢠Buffered Outputs Compatible with LowâPower TTL
⢠Diode Protection on All Inputs
⢠Supply Voltage Range = 3.0 to 18 V
⢠PinâforâPin 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
Limited
⢠NLV Prefix for Automotive and Other Applications Requiring
Unique Site and Control Change Requirements; AECâQ100
Qualified and PPAP Capable
⢠These Devices are PbâFree and are RoHS Compliant
MAXIMUM RATINGS (Voltages Referenced to VSS)
Symbol
Parameter
http://onsemi.com
SOICâ16 WB
DW SUFFIX
CASE 751G
SOEIAJâ16
F SUFFIX
CASE 966
MARKING DIAGRAMS
16
16
14046BG
AWLYYWW
MC14046B
ALYWG
1
1
SOICâ16 WB
SOEIAJâ16
A
WL, L
YY, Y
WW, W
G
= Assembly Location
= Wafer Lot
= Year
= Work Week
= PbâFree Indicator
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 6 of this data sheet.
This device contains protection circuitry to guard
against damage due to high static voltages or electric
fields. However, precautions must be taken to avoid ap-
plications of any voltage higher than maximum rated
voltages to this highâimpedance circuit. For proper op-
eration, Vin and Vout should be constrained to the range
VSS ⤠(Vin or Vout) ⤠VDD.
Unused inputs must always be tied to an appropriate
logic voltage level (e.g., either VSS or VDD). Unused out-
puts must be left open.
Value
Unit
VDD
DC Supply Voltage Range
â0.5 to +18.0
V
Vin
Input Voltage Range (All Inputs)
â0.5 to VDD + 0.5
V
Iin
DC Input Current, per Pin
± 10
mA
PD
Power Dissipation, per Package (Note 1)
500
mW
TA
Operating Temperature Range
â55 to +125
°C
Tstg
Storage Temperature Range
â65 to +150
°C
Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality
should not be assumed, damage may occur and reliability may be affected.
1. Temperature Derating: âD/DWâ Packages: â7.0 mW/_C From 65_C To 125_C
© Semiconductor Components Industries, LLC, 2014
1
August, 2014 â Rev. 14
Publication Order Number:
MC14046B/D
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