Philips Semiconductors

Product data

SA8028

2.5 GHz sigma delta fractional-N /

760 MHz IF integer frequency synthesizers

2002 Feb 22

7

SYMBOL

UNIT

MAX.

TYP.

MIN.

CONDITIONS

PARAMETER

Synthesizer’s contribution to close-in phase

noise of 900 MHz RF signal at 5 kHz offset.

indicative, not tested

–

–99

–

dBc/Hz

Synthesizer’s contribution to close-in phase

noise of 1800 MHz RF signal at 5 kHz offset.

As above

–

–93

–

dBc/Hz

Synthesizer’s contribution to close-in phase

noise of 800 MHz RF signal at 5 kHz offset.

indicative, not tested

–

–101

–

dBc/Hz

Synthesizer’s contribution to close-in phase

noise of 2100 MHz RF signal at 5 kHz offset.

As above

–

–93

–

dBc/Hz

Interface logic input signal levels

HIGH level input voltage

–

V

LOW level input voltage

–0.3

–

V

Input leakage current

–0.5

–

+0.5

µA

Lock detect output signal (in push/pull mode) and Data output signal (in readout test mode)

LOW level output voltage

–

–

0.4

V

HIGH level output voltage

–

–

V

NOTES:

1.

SET

V

SET

R

bias current for charge pumps.

2. The relative output current variation is defined as:

;

|

|

)

(

2

1

2

1

2

I

I

I

I

I

ZOUT

+

–

=

∆I

ZOUT

×

I2

I1

I2

I1

V1

V2

CURRENT

SR00602

VOLTAGE

Figure 3.

Relative output current variation.