NJW1504/1508

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PLL Synthesizer with I

n DESCRIPTION

The NJW1504/1508 are a PLL frequency synthesizer especially

designed for TV and VCR tuning systems and consists of PLL circuit

and a prescaler which operates up to 1.0GHz, built into one chip.

The NJW1504/1508 are controlled through an I

n FEATURES

• Operating Voltage 5V

• Low Operating Current : 15mA typ. @Vcc=5V

• Prescaler accepts frequencies up to 1GHz on chip

• Reference Signal :

NJW1504: Reference Signal Oscillator with peripheral of Xtal on chip

NJW1508: Buffer Amplifier for External Reference Signal on chip

• 34V max. tuning voltage output

• Package Outline: SSOP16

n BLOCK DIAGRAM

(Note)

Purchase of I

under the Philips I

standard specification as definedby by Philips.

n PACKAGE OUTLINE

NJW1504V/NJW1508V

BS0-BS3

BAND SW

4bit

4bit

Latch

VCC3

VCC1

5V

GND

ADRS

SDA

SCL

I2C

Bus

Receive

r

15bit

Latch

8bit

Latch

Programmable

Divider 15bit

PreAMP

1/8

CP

VCC2

AMPOUT

HF IN

AMP

Phase

OUT

Phase

Comp.

1/1024

1/512

(1/640)

Ref.

Divider

X’tal

OSC

OSCOUT

XTAL