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TRF1121
TRF1221
SLWS170B – APRIL 2005 – REVISED JANUARY 2008
www.ti.com
This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with
appropriate precautions. Failure to observe proper handling and installation procedures can cause damage.
ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more
susceptible to damage because very small parametric changes could cause the device not to meet its published specifications.
BLOCK DIAGRAM
VCCD1
VCCD2
GND
Power Supply
VCCIF
VCCUPC
IFOP
VarAtten
Upconverter
BBIP
IF2
IFON
90 o
BBIN
IF1
TXON
GAIN[4]
GAIN[3]
90 o
GAIN[2]
Amplitude
VCCLO1
GAIN[1]
GAIN[0]
Select
N
LO1BPA
LO1BPB
CLK
DATA
EN
Serial Interface
Synth #1
Divider
Synth #2
VCO#1
PFD/CP
?
+
+
Divider
N
Synthesizer #1
LO2OP
LO2ON
VCO2A
VCO2B
PFD/CP
?
+
+
Synthesizer #2
2
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Product Folder Link(s): TRF1121 TRF1221
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