2

SP5848

Preliminary Information

Figure 2 Pin Connections

QP20

PORT P1

CHARGE PUMP 2

DRIVE 2

Vee 2

RF2 INPUT

RF2 INPUT

Vcc2

CRYSTAL

CRYSTAL CAP

Vee

PORT P0

CHARGE PUMP 1

DRIVE 1

Vee 1

RF1 INPUT

RF1 INPUT

Vcc1

ENABLE

DATA

CLOCK

Electrical Characteristics

Tamb= -40

o

C to +80

o

C, Vcc = 4.5 to 5.5 V, These characteristics are guaranteed by either production test or design.

They apply within the specified ambient temperature and supply voltage unless otherwise stated.

Characteristic

Pin

Value

Units

Conditions

Min

Typ

Max

Supply voltage

7, 14

4.5

5.5

V

Supply current

18

22

mA

Synthesiser 1 (UP)

RF1 input voltage

15,16

40

300

mV

rms

80 -2200MHz

RF1 input impedance

15,16

See Figure 4

RF1 division ratio

240

32767

Reference division 1

See Table 1

ratio

Comparison frequency 1

4

MHz

Equivalent phase noise

-148

dBc/Hz

SSB, within loop bandwidth, all

at phase detector 1

comparison frequencies

Charge pump 1 output

19

See Table 3

current

Vpin 19=2V

Charge pump 1 output

19

±3

±10

nA

Vpin19 = 2V

leakage

Charge pump 1 drive

18

0.5

mA

Vpin 18 = 0.7V

output current