CMX993 Datasheet, PDF (9/26 Pages) CML Microcircuits – Programmable 30dB Output Gain Range

Quadrature Modulator
R2
BVREF
R3
R1
Q in
R4
R5
BVREF
R6
C1
R7
C2
R8
C3
R9
C4
R10
BVREF
R11
R12
I in
R14
R13
BVREF
Q channel
input amplifier
LO Input
Q channel
filter amplifier
Divide by 2
or
Divide by 4
CMX993/CMX993W
RF Output
Bandgap
I channel
filter amplifier
VREF
BVREF
I channel
input amplifier
CMX993
Figure 4 CMX993 Modulator and Input/Filter Amplifier Typical Configuration
R5
BVREF
Q channel
input amplifier
LO Input
Note: The modulation
signals may be
connected to the
modulator via either
the MODxN or MODxP
inputs as long as the
connection is the same
for both I and Q
channels.
R2
BVREF
R3
R1
Q in
R4
R7
C2
R6
C1
R9
C4
R8
C3
I in
BVREF
R12
R13
R14
R11
Q channel
filter amplifier
Divide by 2
or
Divide by 4
Bandgap
I channel
filter amplifier
RF Output
VREF
BVREF
R10
BVREF
I channel
input amplifier
CMX993W
Figure 4a CMX993W Modulator and Input/Filter Amplifier Typical Configuration
 2013 CML Microsystems Plc
9
D/993/10