Preliminary
RFSP2020
2.4–2.5 GHz Power Amplifier
Applications
•
•
Product Description
The RFSP2020 power amplifier is a high-
performance GaAs HBT IC designed for use in
transmit applications in the 2.4-2.5 GHz frequency
band. With a P1dB of 25 dBm, the device is ideal
as a final stage for wireless LAN applications
requiring high transmit linearity. Designed with
advanced linearizing techniques, the device
achieves a specific error vector magnitude (EVM)
with lesser backoff than conventional PA designs.
The PA exhibits unparalleled linearity and
efficiency for both 802.11b- and 802.11g-based
WLAN systems. The on-chip detector is perfect
for systems where power sensing is necessary.
The part operates off a single +3.3V supply.
802.11b/g WLAN
2.4 GHz ISM band wireless equipment
16
VCC1
VCC2
VCC3
15
GND
14
13
RF IN
1
12
GND
GND
2
Input
Match
Output
Match
11
RF OUT
VPC1
3
Bias
Bias
Detector
10
GND
Product Features
9
NC
VPC2/3
4
•
•
•
•
•
5
VBC1
6
VBC2/3
3.00
7
DET REF
8
DET OUT
1.00
0.80
4
0.275
0.225
Functional Block Diagram
•
•
25 dBm P1dB@3.3V
30 dB gain
1.5 % EVM @ P
OUT
= +18 dBm
with 54 Mbps OFDM signal
110 mA @ P
OUT
= +18 dBm
with 54 Mbps OFDM signal
Single +3.3V supply voltage
PA power on/off logic
Input and output matched to 50 ohms
Pin 1
Index Area
0.45
0.35
3.00
16
1
0.50 TYP
1. All dimensions are in millimeters, angles in
degrees.
2. The terminal #1 identifier and pad
numbering convention shall conform to
JESD 95-1 SPP-012
3. Lead coplanarity: 0.05 max.
4. Dimension applies to metalized pad and is
measured between 0.25 and 0.30 MM from
pad tip.
1.50
0.05
1.80 SQ
Top View
Side View
Bottom View
3x3 mm Package Outline
05/2003