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Only for training and service purposes
3. TECHNICAL BRIEF
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3.2 GSM MODE
3.2.1 GSM RECEIVER
The GSM-900, GSM-1800, and GSM-1900 receiver inputs of RTR6285 are connected directly to the
transceiver front-end Module. GSM-900, GSM-1800, and GSM-1900 receiver inputs use differential
configurations to improve common-mode rejection and second-order non-linearity performance as
shown in Figure 1-2. The balance between the complementary signals is critical and must be
maintained from the RF filter outputs all the way into the IC pins
[Figure 1-2] GSM Receiver Inputs Topologies