MC145152P2 datasheet(10/24 Pages) FREESCALE

10 / 24 page

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

Freescale Semiconductor

MC145152-2 Parallel-Input (Interfaces with Dual-Modulus Prescalers)

divide values respectively for high and low MC levels, N the number programmed into the

÷ N counter,

and A the number programmed into the

÷ A counter.

Lock Detector Output (Pin 28)

Essentially a high level when loop is locked (fR, fV of same phase and frequency). Pulses low when loop

is out of lock.

2.2.3

Power Supply

VDD

Positive Power Supply (Pin 3)

The positive power supply potential. This pin may range from + 3 to + 9 V with respect to VSS.

VSS

Negative Power Supply (Pin 2)

The most negative supply potential. This pin is usually ground.

2.3

Typical Applications

Figure 7. Synthesizer for Land Mobile Radio VHF Bands

NOTES:

1. Off-chip oscillator optional.

2. The

R and φV outputs are fed to an external combiner/loop filter. See the Phase-Locked Loop - Low-Pass Filter Design page

for additional information. The

R and φV outputs swing rail-to-rail. Therefore, the user should be careful not to exceed the com-

mon mode input range of the op amp used in the combiner/loop filter.

LOCK DETECT SIGNAL

10.24 MHz

NOTE 1

NOTE 2

150 - 175 MHz

5 kHz STEPS

÷ 64/65 PRESCALER

MC145152-2

OSCin

VDD

VSS

OSCout

RA2

RA1

fin

VCO

RA0

+ V

“1"

NO CONNECTS

CHANNEL PROGRAMMING

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