2

SP5668

Fig. 2 SP5668 block diagram

ELECTRICAL CHARACTERISTICS

T

production test or design. They apply within the specified ambient temperature and supply voltage ranges unless otherwise

stated.

Characteristic

Pin

Value

Units

Conditions

Min

Typ

Max

Supply current, Icc

12

65

81

mA

Vcc = 5V Prescaler enabled, PE = 1

58

72

mA

Vcc = 5V Prescaler disabled, PE = 0

RF input voltage

13, 14

100

300

mV

rms

100MHz Prescaler enabled, PE = 1

See Fig. 5b.

13, 14

40

300

mV

rms

300MHz - 2.7GHz Prescaler enabled,

PE = 1, See Fig. 5b.

13,14

40

300

mV

rms

100MHz to 2.0GHz Prescaler

disabled, PE = 0, See Fig. 5a

RF input impedance

13, 14

See Fig. 4.

Data, Clock, Enable

4,5,6

Input high voltage

3

V

CC

V

Input low voltage

0

0.7

V

Input high current

10

µA

Input voltage = V

CC

Input low current

-10

µA

Input voltage = V

EE

Hysteresis

400

mV

Clock Rate

6

500

kHz

REFERENCE

DIVIDER

See Table 1

DE

13

14

INPUTS

RF

PROGRAMMABLE

DIVIDER

÷ 16/17

÷ 2/1

4 BIT

COUNT

13 BIT

COUNT

Fpd

Fcomp

PHASE

COMP

CHARGE

PUMP

OSC

Fref

REF

CRYSTAL

Q1

CRYSTAL

Q2

CHARGE

PUMP

DRIVE

1

16

OS

CO

LOCK

1 BIT

LATCH

3 BIT LATCH

(R0,R1,R2)

1 BIT

LATCH

FLOCK

1 BIT

LATCH

3 BIT

LATCH AND

PORT

INTERFACE

DATA

INTERFACE

DISABLE

18 BIT LATCH

ENABLE

CLOCK

DATA

4

5

6

P2

P1 P0