Table 6. Functional Pin Description
Name
Pin
Description
Number
V
NC V
B2
CC1
V
1
Base power supply for first stage amplifier.
B1
10
12 11
RF
2, 3
RF input for the power amplifier. This pin is DC--shorted to
GND and AC--coupled to the transistor base of the first
stage.
IN
1
2
3
9
8
7
V
RF
RF
V
B1
OUT
OUT
RF
IN
V
4
5
Detector bias voltage supply.
BIAS
RF
IN
CC2
V
Detector output voltage reference. V -- V
is useful for
REF
REF
out
6
4
5
tracking detector performance over temperature.
V
V
V
BIAS REF OUT
V
6
7
Detector output voltage.
OUT
V
Collector power supply for second stage amplifier.
CC2
(Top View)
RF
8, 9
RF output for the power amplifier. This pin is DC--coupled
and requires a DC--blocking series capacitor.
OUT
Figure 1. Pin Connections
V
10
11
12
Base power supply for second stage amplifier.
Not connected.
B2
NC
V
Collector power supply for first stage amplifier.
CC1
GND
Backside
Center
Metal
The center metal base of the QFN 3x3 package provides
both DC and RF ground as well as heat sink contact for the
power amplifier.
MMG2401NR2
RF Device Data
Freescale Semiconductor
3