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CXA1786N

1.1GHz-band PLL IC for Mobile Communications

Sony Semiconductor 

CXA1786N

1.1GHz-band PLL IC for Mobile Communications

For the availability of this product, please contact the sales office.

Descriptions

The CXA1786N is a frequency synthesizer PLL IC

developed for use in mobile communication systems.

This IC has low current consumption, small package

and is suitable for portable sets of cellular telephone

and others.

20 pin SSOP (Plastic)

Features

• Low current consumption

Icc = 6.0mA (typ.)

0.3mA (typ.) in power saving mode

• Maximum operating frequency

1.1GHz guaranteed

• Operating supply voltage range

2.7 to 5.5V

• Ultra small 20-pin SSOP package

• Two types of phase comparator output:

For external charge pump φR φP

Two internal charge pumps DO1 DO2

Applications

1.1GHz-band mobile communication equipment

such as cellular telephones

Structure

Bipolar silicon monolithic IC

Absolute Maximum Ratings

• Supply voltage

Vcc

• Operating temperature Topr

• Storage temperature Tstg

• Allowable power dissipation

PD

7

V

–35 to +85 °C

–65 to +150 °C

300 mW

Operating Condition

Supply voltage

Vcc 2.7 to 5.5 V

Block Diagram and Pin Configuration

OSCI 1

20 φR

NC 2

OSCO 3

Phase

Comparator

19 NC

18 φP

Vp 4

VCC 5

DO1 6

Reference Programmable

Counter 14bits

Charge

Pump 1

Charge

Pump 2

17 TEST

16 DO2

15 FC

GND 7

14 LAT

LD 8

NC 9

FIN 10

Pulse Swallow Programmable

Counter 7bits Counter 11bits

2-modulus

prescaler

1 or 1

64/65 128/129

1-bit Latch 14-bit Latch

18-bit Shift Resister

1-bit Shift

Resister

18-bit Latch

Pulse swallow programmable counter

13 DATA

12 PS

11 CK

Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by

any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the

operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits.

–1–

E93929A8Y

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