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SKY67111-396LF Datasheet Preview

SKY67111-396LF Datasheet

Active Bias Low-Noise Amplifier

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DATA SHEET
SKY67111-396LF: 0.7-1.2 GHz High Linearity, Active Bias
Low-Noise Amplifier
Applications
CDMA, WCDMA, and LTE cellular infrastructure
Ultra low-noise systems
Features
Ultra Low Noise Figure: 0.51 dB @ 0.9 GHz
Input return loss > 18 dB @ 0.9 GHz
High IIP3 performance: +18.9 dBm @ 0.9 GHz
Adjustable supply current and gain
Temperature and process-stable active bias
Miniature DFN (8-pin, 2 x 2 mm) package (MSL1 @ 260 °C per
JEDEC J-STD-020)
ENABLE
RF_IN
RF_OUT
RFGND
Active Bias
VBIAS
S2908
Figure 1. SKY67111-396LF Block Diagram
Skyworks Green™ products are compliant with
all applicable legislation and are halogen-free.
For additional information, refer to Skyworks
Definition of Green™, document number
SQ04-0074.
N/C 1
RFIN 2
RFGND 3
VBIAS 4
8 N/C
7 RFOUT/VDD
6 ENABLE
5 FEEDBACK
S2786
Figure 2. SKY67111-396LF Pinout – 8-Pin DFN
(Top View)
Description
The SKY67111-396LF is GaAs, pHEMT Low-Noise Amplifier (LNA)
with an active bias and high linearity performance. The advanced
GaAs pHEMT enhancement mode process provides excellent
return loss, low noise, and high linearity performance.
The internal active bias circuitry provides stable performance over
temperature and process variation. The device offers the ability to
externally adjust supply current and gain. Supply voltage is
applied to the RFOUT/VDD pin through an RF choke inductor.
Pin 4 (VBIAS) should be connected to RFOUT/VDD through an
external resistor to control the supply current. The RFIN and
RFOUT/VDD pins should be DC blocked to ensure proper
operation. Pin 5 (FEEDBACK) is connected through an RC network
to externally adjust the gain of the device without affecting the
Noise Figure (NF) of the LNA.
The SKY67111-396LF operates in the frequency range of 0.7 to
1.2 GHz with proper tuning.
The LNA is manufactured in a compact, 2 x 2 mm, 8-pin Dual Flat
No-Lead (DFN) package. A functional block diagram is shown in
Figure 1. The pin configuration and package are shown in
Figure 2. Signal pin assignments and functional pin descriptions
are provided in Table 1.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
201752A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • March 12, 2012
1




Skyworks

SKY67111-396LF Datasheet Preview

SKY67111-396LF Datasheet

Active Bias Low-Noise Amplifier

No Preview Available !

DATA SHEET • SKY67111-396LF HIGH LINEARITY, ACTIVE BIAS LNA
Table 1. SKY67111-396LF Signal Descriptions
Pin #
Name
Description
1
N/C
No connection. May be connected to ground
with no change in performance.
2
RFIN
RF input. DC blocking capacitor required.
Pin #
Name
5
FEEDBACK
6
ENABLE
3
RFGND
4
VBIAS
RF ground. Connect to ground through a
capacitor.
LNA supply current. Connect through series
resistor to VDD or bias separately through
DC header, pin 4.
7
RFOUT/VDD
8
N/C
Description
LNA external gain control. Connect to RFOUT
using a series RC network.
Enable pin. Active low (0 V) = amplifier “on”
state.
RF output. Apply VDD through RF choke
inductor. DC blocking capacitor required.
No connection. May be connected to ground
with no change in performance.
Table 2. SKY67111-396LF Absolute Maximum Ratings
Parameter
Symbol
Minimum
Typical
Maximum
Units
Supply voltage
VDD
5.5
V
RF input power
PIN
+20
dBm
Storage temperature
TSTG
–65
+25
+125
°C
Thermal resistance
JC
62.2
°C/W
Operating temperature
TA
–40
+25
+100
°C
Junction temperature
TJ
+150
°C
Note: Exposure to maximum rating conditions for extended periods may reduce device reliability. There is no damage to device with only one parameter set at the limit and all other
parameters set at or below their nominal value. Exceeding any of the limits listed here may result in permanent damage to the device.
CAUTION: Although this device is designed to be as robust as possible, Electrostatic Discharge (ESD) can damage this device. This device
must be protected at all times from ESD. Static charges may easily produce potentials of several kilovolts on the human body
or equipment, which can discharge without detection. Industry-standard ESD precautions should be used at all times. The
SKY67111-396LF ESD threshold level is 500 V using Human Body Model (HBM) Class B testing; 30 V using Man-Machine
(MM) Class A testing; and 1000 V using Charged Device Model (CDM) Class IV testing.
Electrical and Mechanical Specifications
The absolute maximum ratings of the SKY67111-396LF are
provided in Table 2. Electrical specifications are provided in
Table 3.
Typical performance characteristics of the SKY67111-396LF are
illustrated in Figures 3 through 23.
Table 4 provides noise source pull information versus frequency.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
2
March 12, 2012 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 201752A


Part Number SKY67111-396LF
Description Active Bias Low-Noise Amplifier
Maker Skyworks
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