DS1090U-2 datasheet(6/8 Pages) MAXIM

Part #	DS1090U-2

Description	Low-Frequency, Spread-Spectrum EconOscillator

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Manufacturer	MAXIM [Maxim Integrated Products]

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6 / 8 page

Low-Frequency, Spread-Spectrum

EconOscillator

6

_____________________________________________________________________

Pin Description

Block Diagram

NAME

FUNCTION

1

OUT

Oscillator Output

2

RSET

Frequency Control Resistor Input

3VCC

Positive-Supply Terminal

4

GND

Ground

5J0

6J1

Dither Amplitude (Percentage) Inputs

(see Table 2)

7

JC0

8

JC1

Dither Rate Divisor Inputs (see Table 1)

DS1090

GND

MASTER

OSCILLATOR

(VCO)

4MHz–8MHz

FACTORY

PROGRAMMED

PRESCALER

(

÷ 1, 2, 4, 8, 16, OR 32)

TRIANGLE

GENERATOR

VCC

RSET

VOLTAGE-

BIAS CIRCUIT

OUT

fMOSC

fOSC

fMOD

fOUT

J0

J1

JC0

JC1

BUFFER

+

DITHER

AMPLITUDE

(0, 2, 4, OR 8%)

DITHER RATE

(

÷ 4, 8, 16, OR 32)

+

-

(

÷ 128)

DITHER GENERATOR

∑

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DS1090U-2 Datasheet(PDF) 6 Page - Maxim Integrated Products

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