LMX2315TM datasheet(8/20 Pages) NSC

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Charge Pump Current Specification Definitions

TLW11766 – 41

I1 e CP sink current at VDo e VP b DV

I2 e CP sink current at VDo e VP 2

I3 e CP sink current at VDo e DV

I4 e CP source current at VDo e VP b DV

I5 e CP source current at VDo e VP 2

I6 e CP source current at VDo e DV

V e Voltage offset from positive and negative rails Dependent on VCO tuning range relative to VCC and ground Typical values are between 05V and 10V

1 IDo vs VDo e Charge Pump Output Current magnitude variation vs Voltage e

lI1l b lI3l

lI1l a lI3l

100%

and

lI4l b lI6l

lI4l a lI6l

100%

2 IDo-sink vs IDo-source e Charge Pump Output Current Sink vs Source Mismatch e

lI2l b lI5l

lI2l a lI5l

100%

3 IDo vs TA e Charge Pump Output Current magnitude variation vs Temperature e

lI2

temp

l b lI2

25 C

l lI2

25 C

l 100% and lI5

temp

l b lI5

25 C

l lI5

25 C

l 100%

4 Kw e

Phase detectorcharge pump gain constant e

lI2l a lI5l

RF Sensitivity Test Block Diagram

TLW11766 – 42

Note 1

N e 10000

R e 50

P e 64

Note 2

Sensitivity limit is reached when the error of the divided RF output fOUT is greater than or equal to 1 Hz

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