LMX2315TM National Semiconductor, LMX2315TM Datasheet - Page 9

• Manufacturer Part Number: LMX2315TM
• Description: IC FREQ SYNTHESIZER 20-TSSOP
• Manufacturer: National Semiconductor
• Series: PLLatinum™r
• Type: PLL Frequency Synthesizerr

Specifications of LMX2315TM

• Pll: Yes
• Input: CMOS, TTL
• Output: CMOS
• Number Of Circuits: 1
• Ratio - Input:output: 2:1
• Differential - Input:output: Yes/No
• Frequency - Max: 1.2GHz
• Divider/multiplier: Yes/No
• Voltage - Supply: 2.7 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 20-TSSOP
• Frequency-max: 1.2GHz
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: *LMX2315TM

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
1. I
2. I
3. I
4. K = Phase detector/charge pump gain constant =
RF Sensitivity Test Block Diagram
Note 8: N = 10,000 R = 50 P = 64
Note 9: Sensitivity limit is reached when the error of the divided RF output, f
V = Voltage offset from positive and negative rails. Dependent on VCO tuning range relative to V
[
[|I2| − |I5|]/[
[|I2
1
1
⁄
Do
Do-sink
Do
2
⁄
2
*
*
@
vs V
vs T
{|I2| + |I5|}
|I1| − |I3|]/[
temp| − |I2
vs I
A
Do
= Charge Pump Output Current magnitude variation vs Temperature =
1
Do-source
= Charge Pump Output Current magnitude variation vs Voltage =
⁄
2
*
{|I2| + |I5|}]
1
⁄
2
@
*
25˚C|]/|I2
{|I1| + |I3|}]
= Charge Pump Output Current Sink vs Source Mismatch =
Do
Do
Do
Do
Do
Do
= V
= V
= V
*
= V
= V
= V
100%
P
P
@
/2
− V
P
P
*
25˚C|
/2
100% and [
− V
*
100% and [|I5
1
⁄
2
*
|I4| − |I6|]/[
@
temp| − |I5
1
⁄
2
*
{|I4| + |I6|}]
@
25˚C|]/|I5
OUT
9
, is greater than or equal to 1 Hz.
*
100%
@
25˚C|
*
100%
CC
and ground. Typical values are between 0.5V and 1.0V.
DS012339-16
DS012339-17
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