RF2480
Pin
15
Function Description
Interface Schematic
Baseband input to the Q mixer. This pin is DC-coupled. Maximum out-
Q SIG
Q SIG
100 Ω
Q REF
100 Ω
put power is obtained when the input signal has a peak to peak ampli-
tude of 2V; for highly linear operation, the input signal (and output
power) must be reduced appropriately. The recommended DC level for
this pin is 3.0V. The peak minimum voltage on this pin (V
- peak
REF
modulation amplitude) should never drop below 2.0V. The peak maxi-
mum voltage on this pin (V + peak modulation amplitude) should
425 Ω
425 Ω
REF
never exceed 4.0V. See pin 1 for more details.
Baseband input to the I mixer. This pin is DC-coupled. Maximum output
power is obtained when the input signal has a peak to peak amplitude
of 2V; for highly linear operation, the input signal (and output power)
must be reduced appropriately. The recommended DC level for this pin
16
I SIG
I SIG
100 Ω
I REF
100 Ω
is 3.0V. The peak minimum voltage on this pin (V
- peak modulation
REF
amplitude) should never drop below 2.0V. The peak maximum voltage
on this pin (V + peak modulation amplitude) should never exceed
425 Ω
425 Ω
REF
4.0V. See pin 1 for more details.
Application Schematic
DC-Coupled
IREF
100 nF
100 nF
I SIG
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
QREF
Q SIG
Σ
LO IN
VCC
VCC
-45°
+45°
100 nF
100 nF
100 nF
POWER
CONTROL
RF OUT
PD
Rev A4 060329
5-27
RFMD [ RF MICRO DEVICES ]
