STA011

Electrical specifications

13/38

Figure 4.

System clock input/output

Table 9.

Base-band output performance

Symbol

Parameter

Test conditions/notes

Min.

Typ.

Max.

Unit

Baseband Output load

resistance

The output resistance the

IC is loaded

SE to GND

5K

Ω

Baseband output load

capacitance

The output capacitance the

IC is loaded

SE to GND

10

pF

Table 10.

Symbol

Parameter

Test conditions/notes

Min.

Typ.

Max.

Unit

Quartz frequency

Resonance mode: series

Using 14.72

14.72

MHz

Quartz frequency

Resonance mode: series

Using 14.725

14.725

MHz

Pn

Phase Noise

Δf=1kHz

-120

-118

dBc

XTAL1,2 common

mode voltage

VP-1.1

VP-.9

VP-.7

V

1.

A 18pF capacitor connected from XTAL1 pin to gnd is suggested for start-up robustness (see Figure 4).

M_CLKP

REF

;;

;;

;;

yy

yy

yy

MUX

Output

Buffer

to baseband

18pF

AC00414

Table 11.

Symbol

Parameter

Test conditions/notes

Min.

Typ.

Max.

Unit

RF pll loop setting

time

1

10

msec

Total phase noise

contribution

100Hz<

Δf<1.84MHz

1.8

°rms

RF pll comparison

frequency

Programmable via software

mode

0.92

3.68

14.72

MHz

IF pll comparison

frequency

Programmable via software

mode

113.23

KHz

Spurious power level

RFPLL,

Δf=n*460KHz

IFPLL,

Δf=113.23KHz

-50

-50

dBc