TDA5252G2 INFINEON [Infineon Technologies AG], TDA5252G2 Datasheet - Page 56

• Manufacturer Part Number: TDA5252G2
• Description: ASK/FSK 915MHz Wireless Transceiver
• Manufacturer: INFINEON [Infineon Technologies AG]

3.2.7
Quartz: fp=19.0625MHz; C1=8fF; C0=2.1pF; CL=20pF (typical values)
Cv1=8.2pF, Cv2=6.8pF, Cv3=22pF
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.
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.
In case of internal tuning: The crystal on the evaluation board has a temperature stability of +/-
20ppm (or +/- 18kHz of the RF), which must be added to the total tolerances.
In case of default setup (without internal tuning and without usage of pin 21) the temperature
stability and tuning tolerance of the crystal as well as the tolerance of the external capacitors (+/-
0.1pF) have to be added. The crystal on the evaluation board has a temperature stability of +/-
20ppm (means +/- 18kHz of the RF) and a tuning tolerance of +/- 10ppm (means +/- 9kHz of the
RF). The external capacitors add a tolerance of +/- 3.5ppm (or +/- 3.2kHz regarding to the RF).
The frequency stabilities of both the receiver and the transmitter and the modulation bandwidth set
the limit for the bandwidth of the IQ filter. To achieve a high receiver sensitivity and efficient
Data Sheet
Inductivity of the crystal oscillator
Internal capacitors (+/- 10%)
Supply Voltage (2.1...5.5V)
Supply Voltage(2.1...5.5V)
Temperature (-40...+85C)
Temperature (-40...+85C)
Frequency set accuracy
Chip and System Tolerances
Internal Tuning
Default Setup (without internal tuning & without Pin21 usage)
Total
Total
Part
Part
56
Frequency tolerance
Frequency tolerance
@ 915MHz
@ 915MHz
+/- 1.5kHz
+/- 1.5kHz
+/- 29kHz
+/- 39kHz
+/- 5kHz
+/- 8kHz
+/- 4kHz
+/- 5kHz
+/- 1kHz
Rel. tolerance
Rel. tolerance
+/- 1.6ppm
+/- 1.5ppm
+/- 4.5ppm
+/- 1.5ppm
+/- 33ppm
+/- 45ppm
+/- 6ppm
+/- 9ppm
+/- 6ppm
TDA5252 G2
Version 1.1
Application
2007-02-26