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RF112 数据表(PDF) 21 Page - NXP Semiconductors |
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RF112 数据表(HTML) 21 Page - NXP Semiconductors |
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21 / 45 page ![]() Reconstr, filter 5th order, Butterworth Ic = 10 to 40 MHz Mixer load Driver PA HB LO I HB LO Q HB TXBB_IN_I_P TX_HB_OUT TXBB_IN_Q_P TXBB_IN_Q_N TXBB_IN_I_N Mixer load TX mixer TX mixer Driver PA LB LO I LB LO Q LB TX_LB_OUT Figure 8. Detailed block diagram of the transmit chains 3.4.1 Tx BB interface The Tx BB input shall be connected to the DAC output in the baseband chip as shown in figure below: PCB TRX BB DAC ioutp ioutn agnd TXBB_IN_I_P TXBB_IN_I_N Rdf Rcm Rdf Figure 9. Tx BB interface The DAC settings and external resistors Rdif and Rcm must be chosen to fulfill the TX BB input common mode and input signal level requirements. Electrical characteristics RF112 Transceiver Data Sheet, Rev. 1 Draft B, 05/2024 NXP Semiconductors 21 |
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