RF3827
LINEAR GENERAL PURPOSE AMPLIFIER
RoHS Compliant & Pb-Free Product
Package Style: QFN, 16-Pin, 3mmx3mm
NC
NC
NC
Features
5MHz to 1500MHz Operation
Internally Matched Input and
Output
20dB Small Signal Gain
1.2dB Noise Figure
+24dBm Output Power
Single 5V to 9V Positive
Power Supply
GND
1
NC
2
RF IN
3
NC
4
16
15
14
13
12
NC
11
RF OUT
10
NC
9
NC
5
NC
6
NC
7
NC
Applications
CATV Distribution Amplifiers
Cable Modems
Broadband Gain Blocks
Laser Diode Driver
Return Channel Amplifier
Base Stations
Functional Block Diagram
Product Description
The RF3827 is a general purpose, low-cost, high-linearity RF amplifier IC.
The device is manufactured on a Gallium Arsenide process and is featured
in a 3mmx3mm, 16-pin, QFN package. It has been designed for use as an
easily cascadable 75Ω gain block with a noise figure of less than 2dB.
Gain flatness better than 0.5dB from 5MHz to 1000MHz, and high linear-
ity make this part ideal for cable TV applications. Other applications
include IF and RF amplification in wireless voice and data communication
products operating in frequency bands up to 1000MHz. The device is self-
contained with 75Ω input and output impedances providing less than 2:1
VSWR matching. For higher input and output return losses, see the evalu-
ation schematic.
Ordering Information
RF3827
RF3827 PCBA
Linear General Purpose Amplifier
Fully Assembled Evaluation Board 50Ω
Optimum Technology Matching® Applied
GaAs HBT
GaAs MESFET
InGaP HBT
SiGe BiCMOS
Si BiCMOS
SiGe HBT
GaAs pHEMT
Si CMOS
Si BJT
GaN HEMT
RF MICRO DEVICES®, RFMD®, Optimum Technology Matching®, Enabling Wireless Connectivity™, PowerStar®, POLARIS™ TOTAL RADIO™ and UltimateBlue™ are trademarks of RFMD, LLC. BLUETOOTH is a trade-
mark owned by Bluetooth SIG, Inc., U.S.A. and licensed for use by RFMD. All other trade names, trademarks and registered trademarks are the property of their respective owners. ©2006, RF Micro Devices, Inc.
Rev A1 DS071220
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com.
NC
NC
8
1 of 10
RF3827
Absolute Maximum Ratings
Parameter
Device Current
Device Voltage
Input RF Power
Output Load VSWR
Ambient Operating Temperature
Storage Temperature
Rating
175
9
+13
20:1
-40 to +85
-40 to +150
Unit
mA
V
dBm
°C
°C
Caution! ESD sensitive device.
Exceeding any one or a combination of the Absolute Maximum Rating conditions may
cause permanent damage to the device. Extended application of Absolute Maximum
Rating conditions to the device may reduce device reliability. Specified typical perfor-
mance or functional operation of the device under Absolute Maximum Rating condi-
tions is not implied.
RoHS status based on EUDirective2002/95/EC (at time of this document revision).
The information in this publication is believed to be accurate and reliable. However, no
responsibility is assumed by RF Micro Devices, Inc. ("RFMD") for its use, nor for any
infringement of patents, or other rights of third parties, resulting from its use. No
license is granted by implication or otherwise under any patent or patent rights of
RFMD. RFMD reserves the right to change component circuitry, recommended appli-
cation circuitry and specifications at any time without prior notice.
Parameter
Overall (50Ω)
Frequency Range
Input VSWR
Min.
Specification
Typ.
Max.
Unit
Condition
T=25 °C, V
DD
=7V, 50Ω System,
P
IN
=-8dBm
5
1.6:1
1500
MHz
3dB Bandwidth
Appropriate values for the output DC blocking
capacitor and bias inductor are required to
maintain this VSWR over the intended operat-
ing frequency range.
See note for Input VSWR.
Output VSWR
Gain
Gain Flatness
Noise Figure
Noise Figure
Output IP
3
Output IP
3
Output IP
3
Output IP
2
Output IP
2
Output P
1dB
Output P
1dB
Output P
1dB
Reverse Isolation
Gain
Gain Flatness
Noise Figure
Noise Figure
Output IP
3
Output IP
3
Output IP
3
Output IP
2
Output IP
2
Output P
1dB
Output P
1dB
Output P
1dB
1.2:1
20
+/-0.9
1.2
1.5
33.7
37.2
36.4
46.3
44.4
21
24
23.7
24
20
+/-0.9
1.1
1.5
34.8
38.1
38.7
44.1
48.6
22.5
25.1
25.3
dB
dB
dB
dB
dBm
dBm
dBm
dBm
dBm
dBm
dBm
dBm
dB
dB
dB
dB
dB
dBm
dBm
dBm
dBm
dBm
dBm
dBm
dBm
At 500MHz
5MHz to 1000MHz
At 500MHz
From 5MHz to 1000MHz
At 10MHz, Delta F1 and F2 = 1MHz
At 500MHz
At 1000MHz
At 100MHz, Delta F1 and F2 = 156MHz
At 1000MHz
At 10MHz
At 500MHz
At 1000MHz
At 500MHz
T=25 °C, V
DD
=9V, P
IN
=-8dBm
At 500MHz
5MHz to 1000MHz
At 500MHz
From 5MHz to 1000MHz,
At 10MHz, Delta F1 and F2 = 1MHz
At 500MHz
At 1000MHz
At 100MHz, Delta F1 and F2 = 156MHz
At 1000MHz
At 10MHz
At 500MHz
At 1000MHz
2 of 10
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com.
Rev A1 DS071220
RF3827
Parameter
Power Supply
Supply Voltage (V
DD
)
6
7
9
V
T=25
o
C, V
DD
=7V, 75Ω System, P
IN
=-8dBm
5
1.6:1
1500
MHz
3dB Bandwidth
Appropriate values for the output DC blocking
capacitor and bias inductor are required to
maintain this VSWR over the intended operat-
ing frequency range.
See note for input VSWR.
dB
dB
dBm
dBm
dBm
dBm
dBm
dBm
109
mA
10dBmV per channel, flat, at the input of the
amplifier; V
CC
=7V, I
CC
=120mA
-75
-77
-75
CSO+1.25MHz
-91
-60
-57
CSO-1.25MHz
-55
-54
-56
CNR
+66
+65
+65
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dB
dB
dB
9
130
V
mA
At 55.25MHz
At 331.25MHz
At 547.25MHz
At 55.25MHz
At 331.25MHz
At 547.25MHz
At 55.25MHz
At 331.25MHz
At 547.25MHz
At 55.25MHz
At 331.25MHz
At 547.25MHz
At 500MHz
5MHz to 1000MHz
At 50MHz, Delta F1 and F2 = 1MHz
At 500MHz
At 500MHz, Delta F1 and F2 = 55.25MHz
At 10MHz
At 500MHz
At 1000MHz
Min.
Specification
Typ.
Max.
Unit
Condition
Overall (75Ω)
Frequency Range
Input VSWR
Output VSWR
Gain
Gain Flatness
Output IP
3
Output IP
2
Output IP
1dB
1.3:1
20
+0.5
36.8
36.0
50.1
21
23
22
Operating Current Range
100
104
110 Channels
CTB
Power Supply
Supply Voltage (V
DD
)
Operating Current Range
6
115
7
120
Rev A1 DS071220
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com.
RF3827
Pin
1
2
3
4
5
6
7
8
9
10
11
Function
GND
NC
RF IN
NC
NC
NC
NC
NC
NC
NC
RF OUT
Description
Keep traces physically short. Connect this pin to the ground plane with a
via.
No connection. This pin should be connected to the ground plane.
RF input pin. This pin is internally DC blocked. An external DC blocking
capacitor is not required.
No connection. This pin should be connected to the ground plane.
No connection. This pin should be connected to the ground plane.
No connection. This pin should be connected to the ground plane.
No connection. This pin should be connected to the ground plane.
No connection. This pin should be connected to the ground plane.
No connection. This pin should be connected to the ground plane.
No connection. This pin should be connected to the ground plane.
RF output and bias pin. Because DC is present on this pin, a DC blocking
capacitor, suitable for the frequency of operation, should be used in most
applications. For biasing, only an RF choke is needed.
RF OUT
Interface Schematic
RF IN
12
13
14
15
16
Pkg
Base
NC
NC
NC
NC
NC
GND
No connection. This pin should be connected to the ground plane.
No connection. This pin should be connected to the ground plane.
No connection. This pin should be connected to the ground plane.
No connection. This pin should be connected to the ground plane.
No connection. This pin should be connected to the ground plane.
4 of 10
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com.
Rev A1 DS071220
RF3827
Package Drawing
Package Style: QFN, 16-Pin, 3mmx3mm
Rev A1 DS071220
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com.
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