MC145151-2 and MC145152-2 Technical Data, Rev. 5

6

Freescale Semiconductor

MC145151-2 Parallel-Input (Interfaces with Single-Modulus Prescalers)

1.3

Typical Applications

Figure 3. 5 MHz to 5.5 MHz Local Oscillator Channel Spacing = 1 kHz

Figure 4. Synthesizer for Land Mobile Radio UHF Bands

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

5 - 5.5 MHz

VOLTAGE

CONTROLLED

OSCILLATOR

NC

NC

RA0

RA1

RA2

N13

N0

N1

N2

N3

N4

N5

N6

N7

N8

N9

N10

N11

N12

MC145151-2

2.048 MHz

TRANSMIT: 440.0 - 470.0 MHz

RECEIVE: 418.6 - 448.6 MHz

(25 kHz STEPS)

NOTES:

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).

60.2500 MHz

“0"

“1"

“1"

CHOICE OF

DETECTOR

ERROR

SIGNALS

LOCK DETECT SIGNAL

T: 13.0833 - 18.0833 MHz

R: 9.5167 - 14.5167 MHz

T: 73.3333 - 78.3333 MHz

R: 69.7667 - 74.7667 MHz

X6

VCO

LOOP

FILTER

X6

T/R

TRANSMIT

(ADDS 856 TO

RECEIVE

REF. OSC.

10.0417 MHz

(ON-CHIP OSC.

OPTIONAL)

“1"

“0"

“0"

LD

RA0

RA1

RA2

MC145151-2

+ V

φ

R

DOWN

MIXER

CHANNEL PROGRAMMING