LMX2353 National Semiconductor Corporation, LMX2353 Datasheet - Page 5

• Manufacturer Part Number: LMX2353
• Description: Pllatinum? Fractional N Single 2.5 Ghz Low Power Frequency Synthesizer
• Manufacturer: National Semiconductor Corporation

Charge Pump Current Specification Definitions
I1 = CP sink current at V
I2 = CP sink current at V
I3 = CP sink current at V
I4 = CP source current at V
I5 = CP source current at V
I6 = CP source current at V
Note 5: I
Note 6: I
Note 7: I
V = Voltage offset from positive and negative rails. Dependent on VCO tuning range relative to V
[1/2
[|I2| - |I5|] / [1/2
[|I2
CPo
CPo-SINK
CPo
vs T
@
*
vs V
{|I1| - |I3|}] / [1/2
temp| - |I2
A
CPo
vs I
= Charge Pump Outpuit Current magnitude variation vs Temperature =
CPo-SOURCE
= Charge Pump Output Current magnitude vs Variation Voltage =
*
CPo
CPo
CPo
@
{|I2| + |I5|}]
CPo
CPo
CPo
25
= V
= V
= V
o
*
= V
= V
= V
C|] / |I2
P
P
{|I1| + |I3|}]
/2
=
- V
P
P
- V
/2
*
Charge Pump Output Current Sink vs Source Mismatch =
100 %
@
25
*
o
100 % and [1/2
C|
*
100 % and |I5
*
{|I4| - |I6|}] / [1/2
@
temp| - |I5
5
@
*
25
{|I4| + |I6|}]
o
C| / |I5
@
CC
*
25
100 %
and ground. Typical values are between 0.5 V and 1.0 V.
o
C|
*
100 %
DS101124-9
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