KB8821 datasheet(9/21 Pages) SAMSUNG

9 / 21 page

PRELIMINARY SPECIFICATION (V1.5)

FREQUENCY SYNTHESIZER

KB8821/22/23

99-06-15

ELECTRICAL CHARACTERISTICS(V

DD=3.0V, VP=3.0V, -40

οC≤T

a≤85

οC Unless otherwise specified)- Continued

Characteristic

Symbol

Test Conditions

Min.

Typ.

Max.

Unit

Serial Data Control

CLOCK Frequency

fCLOCK

MHz

CLOCK Pulse Width High

tCWH

CLOCK Pulse Width Low

tCWL

DATA Set Up Time to CLOCK

Risng Edge

tDS

DATA Hold Time after CLOCK

Rising Edge

tDH

LE Pulse Width

tLEW

CLOCK Rising Edge to LE Rising

Edge

tCLE

Ia=Charge pump sink current at Vcp=Vp-∆V,

Ib=Charge pump sink current at Vcp=Vp/2,

Ic=Charge pump sink current at Vcp=∆V

Id=Charge pump source current at Vcp=Vp-∆V, Ie=Charge pump source current at Vcp=Vp/2, If=Charge pump source current at Vcp=∆V

∆V=Voltage offset from positive(for sink current) and negative(for source current) points from which the charge pump currents bec

ome flat.

* Output Current Sink vs. Source Mismatch = [| Ib|-|Ie|] / [0.5 * {| Ib|+|Ie|}] * 100 (%)

** Output Current Magnitude Variation vs. Temperature =

[| Ib @any temp.| - |Ib @ 25

οC|] / | I

b @ 25

οC| * 100 (%) and [|I

e @any temp.| - |Ie @ 25

οC|] / |I

e @ 25

οC| * 100 (%)

*** Output Current Magnitude Variation vs. Voltage =

[0.5 * {|Ia|-|Ic|}] / [0.5 * {|Ia|+|Ic|}] * 100 (%) and [0.5 * {|Id|-|If|}] / [0.5 * {|Id|+|If|}] * 100 (%)

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