sky65171-21 Skyworks Solutions, Inc., sky65171-21 Datasheet - Page 2

• Manufacturer Part Number: sky65171-21
• Description: Sky65171-21 1930 ? 2170 Mhz, 0.5 W Power Amplifier
• Manufacturer: Skyworks Solutions, Inc.

PRELIMINARY DATA SHEET • SKY65171-21 0.5 W POWER AMPLIFIER
Technical Description
The SKY65171-21 PA contains all of the needed RF matching and
DC biasing circuits. The device is a two-stage, HBT InGaP device
optimized for high linearity and power efficiency. These features
make the device suitable for wideband digital applications, where
PA linearity and power consumption are of critical importance
(e.g., femtocell and infrastructure applications).
The device has been characterized with standard CDMA2000 and
WCDMA modulated signals. Under these stringent test conditions,
the device exhibits excellent spectral purity and power efficiency.
Table 1. SKY65171-21 Signal Descriptions
2
Pin #
10
1
2
3
4
5
6
7
8
9
GND
RF_IN
GND
PA_EN
GND
VC_BIAS
GND
V_REF1
GND
V_REF2
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [e-mail] • www.skyworksinc.com
September 17, 2010 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 201380A
Name
PA_EN
RF_IN
Ground
RF input
Ground
PA enable
Ground
Bias voltage, 5 V
Ground
Bias reference 1 voltage, 5 V
Ground
Bias reference 2 voltage, 5 V
Match
Input
Description
V_REF1
Figure 2. SKY65171-21 Block Diagram
VCC1
Stage 1
PA
Active Bias
VC_BIAS
Inter-Stage
Match
V_REF2
Pin #
Electrical and Mechanical Specifications
Signal pin assignments and functional pin descriptions are
described in Table 1. The absolute maximum ratings of the
SKY65171-21 are provided in Table 2. Electrical specifications are
provided in Table 3.
Typical performance characteristics of the SKY65171-21 are
illustrated in Figures 3 through 8.
11
12
13
14
15
16
17
18
19
20
VCC2
GND
RF_OUT
GND
GND
VCC2
GND
N/C
GND
VCC1
N/C
Stage 2
PA
Name
Output
Match
Stage 2 collector voltage, 5 V
Stage 1 collector voltage, 5 V
Ground
RF output
Ground
Ground
Ground
No connection
Ground
No connection
RF_OUT
S2041a
Description