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Frequency Synthesizer. MC145151 Datasheet |
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MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
Order this document
by MC145151–2/D
PLL Frequency Synthesizer
Family
CMOS
The devices described in this document are typically used as low–power,
phase–locked loop frequency synthesizers. When combined with an external
low–pass filter and voltage–controlled oscillator, these devices can provide all
the remaining functions for a PLL frequency synthesizer operating up to the
device’s frequency limit. For higher VCO frequency operation, a down mixer or
a prescaler can be used between the VCO and the synthesizer IC.
These frequency synthesizer chips can be found in the following and other
applications:
CATV
AM/FM Radios
Two–Way Radios
TV Tuning
Scanning Receivers
Amateur Radio
OSC ÷ R
MC145151-2
MC145152-2
MC145155-2
MC145156-2
MC145157-2
MC145158-2
CONTROL LOGIC
φ
÷A ÷N
÷ P/P + 1
VCO
OUTPUT
FREQUENCY
DEVICE DETAIL SHEETS
CONTENTS
Page
MC145151–2 Parallel–Input, Single–Modulus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
MC145152–2 Parallel–Input, Dual–Modulus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
MC145155–2 Serial–Input, Single–Modulus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
MC145156–2 Serial–Input, Dual–Modulus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
MC145157–2 Serial–Input, Single–Modulus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
MC145158–2 Serial–Input, Dual–Modulus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
FAMILY CHARACTERISTICS
Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
DC Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
AC Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Timing Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Frequency Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Phase Detector/Lock Detector Output Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
DESIGN CONSIDERATIONS
Phase–Locked Loop — Low–Pass Filter Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Crystal Oscillator Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Dual–Modulus Prescaling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
REV 1
8/95
©MOMoTtoOroRla,OInLc.A1995
MC145151–2 through MC145158–2
1
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MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
Parallel-Input PLL Frequency
Synthesizer
Interfaces with Single–Modulus Prescalers
The MC145151–2 is programmed by 14 parallel–input data lines for the
N counter and three input lines for the R counter. The device features consist of
a reference oscillator, selectable–reference divider, digital–phase detector, and
14–bit programmable divide–by–N counter.
The MC145151–2 is an improved–performance drop–in replacement for the
MC145151–1. The power consumption has decreased and ESD and latch–up
performance have improved.
• Operating Temperature Range: – 40 to 85°C
• Low Power Consumption Through Use of CMOS Technology
• 3.0 to 9.0 V Supply Range
• On– or Off–Chip Reference Oscillator Operation
• Lock Detect Signal
• ÷ N Counter Output Available
• Single Modulus/Parallel Programming
• 8 User–Selectable ÷ R Values: 8, 128, 256, 512, 1024, 2048, 2410, 8192
• ÷ N Range = 3 to 16383
• “Linearized” Digital Phase Detector Enhances Transfer Function Linearity
• Two Error Signal Options: Single–Ended (Three–State) or Double–Ended
• Chip Complexity: 8000 FETs or 2000 Equivalent Gates
MC145151-2
28
1
P SUFFIX
PLASTIC DIP
CASE 710
28
1
DW SUFFIX
SOG PACKAGE
CASE 751F
ORDERING INFORMATION
MC145151P2 Plastic DIP
MC145151DW2 SOG Package
PIN ASSIGNMENT
fin
VSS
VDD
PDout
RA0
1
2
3
4
5
RA1 6
RA2 7
φR 8
φV 9
fV 10
N0 11
N1 12
N2 13
N3 14
28 LD
27 OSCin
26 OSCout
25 N11
24 N10
23 N13
22 N12
21 T/R
20 N9
19 N8
18 N7
17 N6
16 N5
15 N4
REV 1
8/95
©MCMo1to4ro5la1,5In1c–. 1299t5hrough MC145158–2
2
MOTOROLA
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