RF2422
Pin
16
Function Description
Interface Schematic
Baseband input to the I mixer. This pin is DC-coupled. Maximum output See pin 1.
I SIG
power is obtained when the input signal has a peak to peak amplitude
of 2V. The recommended DC level for this pin is 3.0V. The peak mini-
mum voltage on this pin (V
- peak modulation amplitude) should
REF
never drop below 2.0V. The peak maximum voltage on this pin (V
peak modulation amplitude) should never exceed 4.0V.
+
REF
Application Schematic
AC-Coupled
VREF
C
R
R
R
R
5
I SIG
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
C
C
Q SIG
S
LO IN
VCC
VCC
-45°
+45°
100 nF
100 nF
PD
POWER
CONTROL
RF OUT
100 nF
NOTE:
The values of R and C depend on the minimum
baseband frequency (i.e., the cutoff frequency of
this high pass filter should be lower than the
lowest frequency component in the I/Q spectrum).
5-32
Rev A5 010817
RFMD [ RF MICRO DEVICES ]
