MC145151 Motorola, MC145151 Datasheet - Page 4

• Manufacturer Part Number: MC145151
• Description: Parallel-Input PLL Frequency Synthesizer
• Manufacturer: Motorola

Phase Detector B Outputs (Pins 8, 9)
for a loop–error signal. A single–ended output is also avail-
able for this purpose (see PD out ).
leading, then error information is provided by V pulsing low.
lagging, then error information is provided by R pulsing low.
period when both pulse low in phase.
f V
N Counter Output (Pin 10)
MC145151–2 through MC145158–2
4
R , V
R remains essentially high.
V remains essentially high.
V and R remain high except for a small minimum time
NOTES:
These phase detector outputs can be combined externally
If frequency f V is greater than f R or if the phase of f V is
If the frequency f V is less than f R or if the phase of f V is
If the frequency of f V = f R and both are in phase, then both
This is the buffered output of the
1. f R = 4.1667 kHz;
2. Frequency values shown are for the 440 – 470 MHz band. Similar implementation applies to the 406 – 440 MHz band.
For 470 – 512 MHz, consider reference oscillator frequency X9 for mixer injection signal (90.3750 MHz).
RECEIVE
(ON–CHIP OSC.
10.0417 MHz
OPTIONAL)
REF. OSC.
TRANSMIT
(ADDS 856 TO
N13
+ V
N VALUE)
OSC in
N12
R = 2410; 21.4 MHz low side injection during receive.
2.048 MHz
Figure 1. 5 MHz to 5.5 MHz Local Oscillator Channel Spacing = 1 kHz
N11
“0”
OSC in
V DD
V SS
T/R
OSC out
Figure 2. Synthesizer for Land Mobile Radio UHF Bands
N10
OSC out
“0”
“1”
N9
RA2
“1”
N counter that is inter-
N8
MC145151–2
N7
CHANNEL PROGRAMMING
RA1
“1”
f in
MC145151–2
N6
TYPICAL APPLICATIONS
N = 2284 TO 3484
N5
RA0
“0”
N4
RA2
NC
N3
RA1
LD
N2
MC145151–2 Data Sheet Continued on Page 23
PD out
N1
nally connected to the phase detector input. With this output
available, the
LD
Lock Detector Output (Pin 28)
phase and frequency). Pulses low when loop is out of lock.
POWER SUPPLY
V DD
Positive Power Supply (Pin 3)
from + 3 to + 9 V with respect to V SS .
V SS
Negative Power Supply (Pin 2)
ground.
NC
RA0
PD out
f in
Essentially a high level when loop is locked (f R , f V of same
The positive power supply potential. This pin may range
The most negative supply potential. This pin is usually
f V
f V
LOCK DETECT SIGNAL
R
N0
0 1 1 1 0 0 0 1 0 0 0 = 5 MHz
1 0 1 0 1 1 1 1 1 0 0 = 5.5 MHz
CHOICE OF
DETECTOR
SIGNALS
ERROR
T: 13.0833 – 18.0833 MHz
R: 9.5167 – 14.5167 MHz
X6
N counter can be used independently.
FILTER
LOOP
CONTROLLED
OSCILLATOR
60.2500 MHz
5 – 5.5 MHz
VOLTAGE
DOWN
MIXER
VCO
TRANSMIT: 440.0 – 470.0 MHz
RECEIVE: 418.6 – 448.6 MHz
T: 73.3333 – 78.3333 MHz
R: 69.7667 – 74.7667 MHz
(25 kHz STEPS)
X6
MOTOROLA