CXA1787N 데이터 시트보기 (PDF) - Sony Semiconductor

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CXA1787N

2GHz-band PLL IC for Mobile Communications

Sony Semiconductor 

Pin Description

Pin

No.

Symbol

Typical pin

voltage (DC)

1 OSCI

10 FIN

2.2V

2

9 NC

—

19

3 OSCO

High: 2.2V

Low: 2.0V

Equivalent circuit

VCC

1

10

GND

—

VCC

3

500Ω

GND

4 VP

5 VCC

6 DO1

16 DO2

7 GND

8 LD

18 φP

20 φR

11 CK

13 DATA

14 LAT

3V

3V

—

—

High: 2.2V

Low: 0.1V

Open Low

—

—

Vp

6

16

GND

8

18

20

11

13

14

–2–

Vp

(LD is VCC)

GND

VCC

GND

CXA1787N

Description

Reference frequency

signal input.

VCO signal input.

No connected.

Reference frequency

signal output.

Oscillator is formed by

connecting the crystal

resonator between this

pin and the OSCI pin; the

oscillator signal is used

as the reference

frequency signal.

Power supply for the

charge pump outputs

(Do1, Do2) and phase

comparator outputs

(φR, φP).

Power supply.

Charge pump 1 output.

Charge pump 2 output.

Outputs only when the

LAT pin is High; in high

impedance when the

LAT pin is Low.

Ground.

Lock detection signal

output.

Phase comparator output.

Used for the external

charge pump.

Clock input.

Data input.

Latch input.

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