THS9001_08 Datasheet, PDF (12/20 Pages) STMicroelectronics – 50 MHz to 350 MHz CASCADEABLE AMPLIFIER

THS9001
SLOS426B – NOVEMBER 2003 – REVISED JANUARY 2007
www.ti.com
APPLICATION INFORMATION (continued)
Figure 21 Shows an example of a single conversion receiver architecture and where the THS9001 would
typically be used.
LNA 1
900 MHz − 2 GHz
Image Rejection
LNA 2
Filter
Mixer
IF Amp 1
IF SAW
900 MHz − 2 GHz
PGA
IF SAW
IF Amp 2
ADC
RX LO
LO Drive LO Drive
Amp 1
Amp 2
THS9001
2x for Diversity
Figure 21. Example Single Conversion Receiver Architecture
Figure 22 shows an example of a dual conversion receiver architecture and where the THS9001 would typically
be used.
900 MHz − 2 GHz
Image Reject
100 MHz − 300 MHz
1st IF Amp
LNA 1 LNA 2 ^Filter 1st Mixer
1st IF SAW PGA
20 MHz − 70 MHz
2nd IF Amp1
2nd Mixer
2nd
IF
SAW
2nd IF
Amp2
Alias Filter
ADC
LO1 Drive LO1 Drive
RX LO 1 ^{Amp 1 Amp 2}
RX LO2
LO2 DriveLO2 Drive
Amp 1 Amp 2
THS9001
2x for Diversity
Figure 22. Example Dual Conversion Receiver Architecture
Figure 23 shows an example of a dual conversion transmitter architecture and where the THS9001 would
typically be used.
BB
100 MHz − 300 MHz
900 MHz − 2 GHz
1st IF amp
DAC BB Amp Alias Filter 1st Mixer
IF SAW PGA 2nd Mixer
PA
RX LO1
LO1 Drive LO1 Drive
Amp 1 Amp 2
LO2 Drive LO2 Drive
RX LO2 Amp 1 Amp 2
THS9001
2x for Diversity
Figure 23. Example Dual Conversion Transmitter Architecture
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