LMX2332USLBX National Semiconductor, LMX2332USLBX Datasheet - Page 34

• Manufacturer Part Number: LMX2332USLBX
• Description: IC FREQ SYNTH DUAL 24LAMINATECSP
• Manufacturer: National Semiconductor
• Series: PLLatinum™r
• Type: PLL Frequency Synthesizerr

Specifications of LMX2332USLBX

• Pll: Yes with Bypass
• Input: CMOS, TTL
• Output: CMOS
• Number Of Circuits: 1
• Ratio - Input:output: 3:1
• Differential - Input:output: Yes/No
• Frequency - Max: 1.2GHz, 600MHz
• Divider/multiplier: Yes/No
• Voltage - Supply: 2.7 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 24-Laminate CSP
• Frequency-max: 1.2GHz
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: LMX2332USLBXTR

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Test Setups
The block diagram above illustrates the setup required to
measure the LMX233xU device’s OSC
level. The same setup is used for the LMX2330TMEB/
LMX2330SLEEB Evaluation Boards. This setup is similar to
the f
now connected to the OSC
V
signal generator. The R counter is typically set to 1000, i.e.
RF R_CNTR Word = 1000 or IF R_CNTR Word = 1000. The
reference divider output is routed to the F
ing the RF PLL R Divider Output word (F
10) or the IF PLL R Divider Output word (F
CC
. The 51 Ω shunt resistor matches the OSC
IN
sensitivity setup except that the signal generator is
(Continued)
in
pin and both f
in
o
LMX233xU OSC
IN
LD pin by select-
o
buffer sensitivity
o
LD Word = 2 or
LD Word = 1 or
pins are tied to
in
input to the
in
Sensitivity Test Setup
34
9) in Code Loader. Similarly, a Universal Counter is con-
nected to the F
output from the signal generator. The output of the reference
divider is monitored and should be equal to OSC
R_CNTR or OSC
Again, V
frequency and voltage level are then swept with the signal
generator. The measurements are repeated at different tem-
peratures, namely T
is reached when the frequency error of the divided input
signal is greater than or equal to 1 Hz.
CC
is swept from 2.7V to 5.5V. The OSC
o
LD pin and is tied to the 10 MHz reference
in
/ IF R_CNTR.
A
= -40˚C, +25˚C, and +85˚C. Sensitivity
10136641
in
in
/ RF
input