tda5255e1 Infineon Technologies Corporation, tda5255e1 Datasheet - Page 57
tda5255e1
Manufacturer Part Number
tda5255e1
Description
Ask/fsk 434mhz Wireless Transceiver
Manufacturer
Infineon Technologies Corporation
Datasheet
1.TDA5255E1.pdf
(93 pages)
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Quantity
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Part Number:
TDA5255E1
Manufacturer:
INFINEON/英飞凌
Quantity:
20 000
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Default values
In case of using the evaluation board, the crystal with its typical parameters (fp=18.08958MHz,
C
each are used the following default states are set in the device
Table 3-6
3.2.7
Quartz: fp=18.08958MHz; C1=8fF; C0=2,08pF; CL=20pF (typical values)
Cv1=10pF, Cv2=1.8pF, Cv3=15pF
Table 3-7
Table 3-8
Tolerance values in Table 3-8 are valid, if pin 21 is not connected. Establishing the connection to
pin 21 the tolerances increase by +/- 27ppm (internal capacitors), if internal tuning is not used.
Concerning the frequency tolerances of the whole system also crystal tolerances (tuning
tolerances, temperature stability, tolerance of C L ) have to be considered.
In addition to the chip tolerances also the crystal and external component tolerances have to be
considered in the tuning and non-tuning case.
Preliminary Specification
1
=8fF, C
+FSK-TX / ASK-RX
ASK-TX / FSK-RX
Inductivity of the crystal oscillator
Operating state
Internal capacitors (+/- 10%)
0
Supply Voltage (2.1...5.5V)
Supply Voltage(2.1...5.5V)
Temperature (-40...+85C)
Temperature (-40...+85C)
=2,08pF, C
-FSK-TX
Frequency set accuracy
Chip and System Tolerances
Default oscillator settings
Internal Tuning
Default Setup (without internal tuning & without Pin21 usage)
Total
Total
Part
Part
L
=20pF) and external capacitors with Cv1=10pF, Cv2=1.8pF, Cv3=15pF
434.16 MHz
Frequency
+35 kHz
-35 kHz
57
Frequency tolerance
Frequency tolerance
@ 434MHz
+/- 10.8kHz
+/- 18.7kHz
@ 434MHz
+/- 1.3kHz
+/- 3.5kHz
+/- 0.9kHz
+/- 5.7kHz
+/- 3.5kHz
+/- 3.5kHz
+/- 0.9kHz
.
Rel. tolerance
Rel. tolerance
+/- 13ppm
+/- 25ppm
+/- 43ppm
+/- 3ppm
+/- 8ppm
+/- 2ppm
+/- 8ppm
+/- 8ppm
+/- 2ppm
TDA5255 E1
Version 1.1
Application
2002-11-28
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