TDA5250D2 Datasheet, PDF (81/97 Pages) Infineon Technologies AG – ASK/FSK 868MHz Wireless Transceiver

confidential
TDA 5250 D2
preliminary
Applications
4.10.2 Sensitivity depending on the ambient Temperature
Demonstrating a wide band of application possibilities the temperature behavior
must not be forgotten. In automotive systems the required temperature range is
from -40 °C to +85 °C. The receivers very good performance is documented
in the following graph. The selected supply voltage is 5V, the influence of the
supply voltage can be seen in the following Section 4.10.3
The IQ filter setting can be taken from the legend of Figure 4-37.
Figure 4-37 Temperature Behaviour
BER_Temp_5V.wmf
Figure 4-37 shows that ASK as well as FSK sensitivity is in the range of -110 to
-111dBm at 20°C ambient temperature for a BER of 2E-3.
Notice that the sensitivity variation in this temperature range of -40 °C to
+85 °C is only about 1.5 to 2 dB.
Wireless Components
4 - 41
Specification, July 2002