TDA5255XT Infineon Technologies, TDA5255XT Datasheet - Page 48
TDA5255XT
Manufacturer Part Number
TDA5255XT
Description
Manufacturer
Infineon Technologies
Datasheet
1.TDA5255XT.pdf
(91 pages)
Specifications of TDA5255XT
Operating Temperature (min)
-40C
Operating Temperature (max)
85C
Operating Temperature Classification
Industrial
Product Depth (mm)
4.4mm
Product Length (mm)
9.7mm
Operating Supply Voltage (min)
2.1V
Operating Supply Voltage (max)
5.5V
Lead Free Status / Rohs Status
Compliant
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3.2
The equivalent schematic of the crystal with its parameters specified by the crystal manufacturer
can be taken from the subsequent figure.
Here also the load capacitance of the crystal C L , which the crystal wants to see in order to oscillate
at the desired frequency, can be seen.
Figure 3-14
Therefore the Resonant Frequency f s of the crystal is defined as:
The Series Load Resonant Frequency f S ‘ of the crystal is defined as:
regarding Figure 3-14
f s ’ is the nominal frequency of the crystal with a specified load when tested by the crystal
manufacturer.
Pulling Sensitivity of the crystal is defined as the magnitude of the relative change in frequency
relating to the variation of the load capacitor.
Data Sheet
f
f
S
S
Crystal Oscillator
`
=
=
2
2
Crystal
π
π
L
1
L
1
1
1
*
*
C
C
L
C
C
1
-R
1
1
1
0
:
:
:
*
1
motional inductance of the crystal
motional capacitance of the crystal
shunt capacitance of the crystal
+
C
0
C
+
1
C
L
L
1
48
C
C
1
0
R
1
[3 – 14]
[3 – 13]
C
L
TDA5255 E1
Version 1.2
Application
2007-02-26
Crystal.wmf
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