TDA5250XT Infineon Technologies, TDA5250XT Datasheet - Page 47

• Manufacturer Part Number: TDA5250XT
• Manufacturer: Infineon Technologies

Specifications of TDA5250XT

• 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

Figure 3-9
Above you can see the measurement of the evalboard with a span of 200MHz. The evalboard has
been optimized for 3V. The load is about 240+j0 at 868.3MHz.
A tuning-free realization requires a careful design of the components within the matching network.
A simple linear CAE-tool will help to see the influence of tolerances of matching components.
Suppression of spurious harmonics may require some additional filtering within the antenna
matching circuit. Both can be seen in Figure 3-10 and Figure 3-11 The total spectrum of the
evalboard can be summarized as:
Data Sheet
Carrier fc
fc-18.1MHz
fc+18.1MHz
2
3
nd
rd
harmonic
harmonic
Sparam_measured_200M
+9dBm
-66dBm
-40dBm
-44dBm
-62dBm
47
Sparam_measured_200M.pcx
TDA5250 D2
Version 1.7
Application
2007-02-26