SA7026DK 데이터 시트보기 (PDF) - Philips Electronics

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SA7026DK

1.3GHz low voltage fractional-N dual frequency synthesizer

Philips Electronics 

Philips Semiconductors

1.3GHz low voltage fractional-N dual synthesizer

Objective specification

SA7026

SYMBOL

PARAMETER

CONDITIONS

Phase noise

C/N

Synthesizer’s contribution to close-in-phase noise of

1300 MHz RF signal at 1 kHz offset.

fref=19.44MHz;

fcomp=240kHz

indicative, not tested

Interface logic input signal levels; pins 3, 15, 16, 18, 19, 20

VIH

HIGH level input voltage

VIL

LOW level input voltage

Ibias

Input bias current

Lock detect output signal (in push/pull mode); pin 1

logic 1 or logic 0

VOL

LOW level output voltage

VOH

HIGH level output voltage

NOTES:

1.

ISET

=

VSET

RSET

bias

current

for

charge

pumps.

Isink = 2mA

Isource = –2mA

2. The relative output current variation is defined thus:

DIOUT

IOUT

+

2.

(I2–I1)

I(I2 ) I1)I

;

with V1 + 0.7V,

V2 + VDDCP –0.8V (See Figure 3.)

CURRENT

I2

MIN.

TYP.

MAX.

–

–77 –

0.7*VDD –

–0.3

–

–5

–

–

–

VDD–0.4 –

VDD+0.3

0.3*VDD

+5

0.4

–

UNIT

dBc

Hz

V

V

µA

V

V

I1

V1

V2

VOLTAGE

I2

I1

Figure 3. Relative Output Current Variation

SR00602

1998 Oct 13

5

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