7

SP5658

TO

OS

DIS

P0/OP

P1/0C

FUNCTIONAL DESCRIPTION

0

0

0

#

#

NORMAL OPERATION

0

0

1

#

#

CHARGE PUMP DISABLE

1

0

0

F pd/2

F comp

NORMAL OPERATION

0

1

0

#

#

VARACTOR LINE DISABLE

0

1

1

#

#

CHARGE PUMP AND

VARACTOR LINE DISABLE

1

X

1

–

–

NOT PERMITTED

# CONTROLLED BY BITS P0 AND P1 WITHIN DATA WORD

Table 2 Test modes

C0

CURRENT IN mA

MIN

TYP

MAX

0

0.23

0.3

0.37

1

0.68

0.9

1.12

Table 3 Charge pump current

Fig. 4 Typical input impedance

Fig. 5a Typical input sensitivity (Prescaler disabled, DE=0)

Fig. 5b Typical input sensitivity (Prescaler enabled, DE=1)

0.5

0.2

1

0

+j0.2

+j0.5

+j1

+j2

+j5

2

5

–j5

–j2

–j1

–j0.5

–j0.2

FREQUENCY MARKERS AT 100MHz,

X

X

X

X

NORMALISED TO 50

500MHz, 1GHz AND 2.7GHz

300

100

40

10

1000

2000

3000

FREQUENCY (MHz)

3500

OPERA TING

WINDOW

1000

2000

2700

3000

FREQUENCY (MHz)

3500

300

OPERA TING

WINDOW

300

100

40

10

VIN

(mV RMS

INTO 50 )

VIN

(mV RMS

INTO 50 )

100

80

80

50