Proposed
RF2722
Pin
1
Function
LNA 1P
Description
Interface Schematic
RF input to LNA 1. Internally matched for 800MHz to 1000MHz operation.
This pin possesses a DC voltage with respect to ground, and a series block-
ing cap may be required in some applications.
BIAS
+
-
Complementary input to pin 1. This pin possesses a DC voltage with
respect to ground, and a series blocking cap may be required in some
applications.
See Pin 1.
2
3
LNA 1N
LNA 2P
RF input to LNA 2. Internally matched for 800MHz to 1000MHz operation.
This pin possesses a DC voltage with respect to ground, and a series block-
ing cap may be required in some applications.
BIAS
+
-
Complementary input to pin 3. This pin possesses a DC voltage with
respect to ground, and a series blocking cap may be required in some
applications.
See Pin 3.
4
5
LNA2N
LNA 3P
RF input to LNA 3. Internally matched for 1800MHz to 2000MHz opera-
tion. This pin possesses a DC voltage with respect to ground, and a series
blocking cap may be required in some applications.
BIAS
+
-
Complementary input to pin 5. This pin possesses a DC voltage with
respect to ground, and a series blocking cap may be required in some
applications.
See Pin 5.
6
7
LNA 3N
LNA 4P
RF input to LNA 4. Internally matched for 1800MHz to 2000MHz opera-
tion. This pin possesses a DC voltage with respect to ground, and a series
blocking cap may be required in some applications.
BIAS
+
-
Complementary input to pin 7. This pin possesses a DC voltage with
respect to ground, and a series blocking cap may be required in some
applications.
See Pin 7.
8
9
LNA 4N
Supply for the quadrature mixer.
MIX VCC
MIX VCC
LOAD
VCO divider supply.
10
11
LO VCC
LO VCC
BIAS
Output from the VCO to drive the synthesizer input. This is the VCO divided
by 8.
VCO OUT
VCO OUT
Low band TX buffer output.
12
TXB OUT LB
TXB OUT LB
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Rev A4 DS050919
11 of 26
RFMD [ RF MICRO DEVICES ]
