MC145220 Просмотр технического описания (PDF) - Motorola => Freescale

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MC145220

Dual 1.1 GHz PLL Frequency Synthsizer

Motorola => Freescale 

LOOP SPECIFICATIONS (V+ = V+i = 2.7 to 5.5 V unless otherwise indicated, GND = GNDi, TA = – 40 to 85°C)

Guaranteed

Operating Range

Symbol

Parameter

Test Condition

Min

Max Unit

Pin Input Sensitivity Range, fin or fini (Figure 7)

40 MHz ≤ frequency < 300 MHz

300 MHz ≤ frequency < 700 MHz

700 MHz ≤ frequency < 1100 MHz

–2

8

dBm*

–5

6

– 16

4

∆Pin

—

fref

Difference Allowed Between fin and fini

Isolation Between fin and fini

Input Frequency, REFin Externally Driven in

Reference Mode (Figure 8)

fXTAL Crystal Frequency, Crystal Mode (Figure 9)

15

Vin ≥ 400 mV p–p, R Counter set to divide

ratio such that fR ≤ 1 MHz, REF Counter set

to divide ratio such that REFout ≤ 5 MHz

4

C1 ≤ 30 pF, C2 ≤ 30 pF, Includes Stray

Capacitance; R Counter and REF Counter

same as above

V+ = 2.7 V 2

V+ = 3.5 V 2

V+ = 4.5 V 2

V+ = 5.5 V 2

10

dB

dB

27

MHz

MHz

10

13

15

15

fout Output Frequency, REFout (Figures 10 and 12)

f

Operating Frequency of the Phase Detectors

CL = 25 pF

dc

5

MHz

dc

1

MHz

tw

Output Pulse Width, φR, φV, φRi, φVi

(Figures 11 and 12)

fR in Phase with fV, CL = 25 pF

16

125

ns

Cin Input Capacitance, REFin

* Power level at the input to the dc block.

—

5

pF

MC145220

6

MOTOROLA

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