MC145159–1

MOTOROLA

1

Serial-Input PLL Frequency

Synthesizer with Analog Phase

Detector

Interfaces with Dual–Modulus Prescalers

The MC145159–1 has a programmable 14–bit reference counter, as well as

fully programmable divide–by–N/divide–by–A counters. The counters are

programmed serially through a common data input and latched into the

appropriate counter latch, according to the last data bit (control bit) entered.

When combined with a loop filter and VCO, this device can provide all the

remaining functions for a PLL frequency synthesizer operating up to the

device’s frequency limit. For higher VCO frequency operations, a down mixer or

a dual–modulus prescaler can be used between the VCO and the PLL.

• 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

• Compatible with the Serial Peripheral Interface (SPI) on CMOS MCUs

•÷ R Range = 3 to 16383

•÷ N Range = 16 to 1023, ÷ A Range = 0 to 127

• High–Gain Analog Phase Detector

• See Application Note AN969

PIN ASSIGNMENTS

PLASTIC DIP

AND SOG PACKAGE

FSO

CHARGE

OSCout

OSCin

RO

fin

LD

MC

VSS

VDD 5

4

3

2

1

10

9

8

7

6

14

15

16

17

18

19

20

11

12

13

VSS′

APDout

CH

VDD′

RR

CLK

DATA

ENB

SRout

CR

SSOP

RO

VDD′

CH

APDout

VSS′

VDD

CHARGE

OSCout

OSCin

RR 5

4

3

2

1

10

9

8

7

6

14

15

16

17

18

19

20

11

12

13

CLK

DATA

ENB

SRout

CR

FSO

VSS

MC

LD

fin

Order this document

by MC145159–1/D

MOTOROLA

SEMICONDUCTOR TECHNICAL DATA

MC145159-1

P SUFFIX

PLASTIC DIP

CASE 738

DW SUFFIX

SOG PACKAGE

CASE 751D

ORDERING INFORMATION

MC145159P1

Plastic DIP

MC145159DW1

SOG Package

MC145159VF1

SSOP

20

1

VF SUFFIX

SSOP

CASE TBD

20

1

REV 1

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