RF5125 RF Micro Devices, RF5125 Datasheet - Page 3

• Manufacturer Part Number: RF5125
• Description: LINEAR POWER AMPLIFIER
• Manufacturer: RF Micro Devices

Rev A23 DS070515
Base
Pkg
Pin
10
11
12
13
14
15
16
1
2
3
4
5
6
7
8
9
PDETECT (or
Function
RF OUT/
RF OUT
RF OUT
VREG1
VREG2
N/C*)
RF IN
RF IN
GND
VC2
VC1
VCC
NC
NC
NC
NC
NC
NC
Description
Not connected. May be connected to ground (GND).
RF input. See evaluation board schematic for details.
RF input. See evaluation board schematic for details.
Not connected. May be connected to ground (GND).
Do not connect.
Note: VCC voltage may be applied to this pin without damage to, or affect-
ing the performance of, the RF5125.
Bias current control voltage for the first stage.
Bias current control voltage for the second stage. The VREG2 pin may be
connected to VREG1 through an external resistor bridge.
Provides an output voltage proportional to the output RF level.
*In applications where the PDETECT function is not desired, this pin may
be left unconnected.
No-connect.
RF output.
Same as pin 10.
Power supply for second stage amplifier. Connect as shown on evaluation
board schematic.
Not connected. May be connected to ground (GND).
Power supply for first stage amplifier. Connect as shown on evaluation
board schematic.
Not connected. May be connected to ground (GND).
Supply voltage for the bias reference and control circuits. May be con-
nected with VC1 and VC2 (single-supply voltage).
The center metal base of the QFN package provides DC and RF ground as
well as heat sink for the amplifier.
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at ([phone] or [e-mail].
Interface Schematic
See pin 2.
See pin 10.
MATCH
INPUT
RF5125
BIAS
VCC
INTERSTAGE
RF OUT
MATCH
3 of 12