on a network analyzer. The parameters labeled ESR, DL and C
L
are maximum numbers usually
available in the data sheet for a crystal.
The table also includes three columns of Recommended Component Values. These values apply
to system board components. C
1
and C
2
are the values in pico Farads of the load capacitors that
should be put on each leg of the crystal pins to ensure oscillation at the correct frequency. Rs is the
value in kΩ of a resistor that is placed in series with the crystal between the OSC1 pin and the crystal
pin. Rs dissipates some of the power so the Max Dl crystal parameter is not exceeded. Only use
the recommended C
1
, C
2
, and Rs values with the associated crystal part. The values in the table
were used in the simulation to ensure crystal startup and to determine the worst case drive level
(WC Dl). The value in the WC Dl column should not be greater than the Max Dl Crystal parameter.
The WC Dl value can be used to determine if a crystal with similar parameter values but a lower
Max Dl value is acceptable.
Table 27-24. Crystal Parameters
WC Dl (μW)
Recommended
Component
Values
Crystal Parameters
Crystal Spec
(Tolerance /
Stability)
Freq (MHz)
PKG Size
(mm x mm)
Holder
MFG Part#
MFG
Max ValuesTypical Values
Rs (kΩ)
C
2
(pF)
C
1
(pF)
C
L
(pf)
Max Dl (µW)
ESR (Ω)
L1 (mH)
C1 (fF)
C0 (pF)
132012128500300598.102.701.0030/50 ppm48 x 4.5NX8045GBNX8045GB-
4.000M-STD-
CJL-5
NDK
1030141410500150396.004.051.1830/30 ppm410 x 4.52-SMDFQ1045A-4FOX
164012128500250356.502.801.0030/50 ppm58 x 4.5NX8045GBNX8045GB-
5.000M-STD-
CSF-4
NDK
214012128500250173.204.101.3030/50 ppm68 x 4.5NX8045GBNX8045GB-
6.000M-STD-
CSF-4
NDK
2090141410500150112.306.261.3730/30 ppm610 x 4.52-SMDFQ1045A-6FOX
277012128500200139.302.801.0030/50 ppm88 x 4.5NX8045GBNX8045GB-
8.000M-STD-
CSF-6
NDK
21701414105008059.106.691.9530/30 ppm87 x 54-SMDFQ7050B-8FOX
29802424165008085.704.901.8250/30 ppm812.5 x 4.85HC49/USECS-80-16-
28A-TR
ECS
1242.0
a
1212105005020.58.852.3710/20 ppm127.2 x 5.2ABMMAABMM-
12.0000MHz-
10-D-1-X-T
Abracon
1472.51212820010081.002.200.7020/30 ppm123.2 x 2.5NX3225GANX3225GA-
12.000MHZ-
STD-CRG-2
NDK
36201212850012056.403.120.9330/50 ppm125 x 3.2NX5032GANX5032GA-
12.000MHZ-
LN-CD-1
NDK
June 18, 20141840
Texas Instruments-Production Data
Electrical Characteristics
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