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PM2111G

Description
Narrow Band Medium Power Amplifier, 800MHz Min, 1675MHz Max, SOP-8
CategoryWireless rf/communication    Radio frequency and microwave   
File Size445KB,5 Pages
ManufacturerRichardson Electronics Ltd
Environmental Compliance
Download Datasheet Parametric View All

PM2111G Overview

Narrow Band Medium Power Amplifier, 800MHz Min, 1675MHz Max, SOP-8

PM2111G Parametric

Parameter NameAttribute value
Is it Rohs certified?conform to
MakerRichardson Electronics Ltd
Reach Compliance Codeunknown
Characteristic impedance50 Ω
structureCOMPONENT
Gain29 dB
Maximum input power (CW)10 dBm
Maximum operating frequency1675 MHz
Minimum operating frequency800 MHz
Maximum operating temperature85 °C
Minimum operating temperature-40 °C
RF/Microwave Device TypesNARROW BAND MEDIUM POWER

PM2111G Preview

PM2111G
Single Supply RFIC Power Amplifier
800
-
1675 MHz Operation
Features
>30 dBm Output Power @ 5V
Single 3V to 5V Supply
-
Class A Operation
Linear Class AB Operation (requires -VGG2)
50% Efficiency
Unconditionally Stable
Applications
Wireless Data Collection
Cellular & Cordless Telephones
Mobile Satellite Communications
Description
The PM2111G is a two stage high-efficiency GaAs FET RFIC power amplifier designed for wireless applications
with 850 MHz to 1650 MHz center frequencies, where greater than 50 MHz bandwidths are achieved using external
matching components.
In a single supply mode both stages of the PM2111G are inherently biased for (saturated) Class A operation and
the current will remain constant, or increase slightly under input power back-off. By applying a negative voltage to
VGG2 a more linear, Class AB operation is possible, reducing current consumption when in an idle or backed-off
input power mode. Using the PM2111G in this Class AB mode has an advantage over traditional deep depletion
mode devices since it does not require two negative supply voltages or sequencing circuits for safe and proper
operation.
Electrical Characteristics
Typical values specified for f = 1675 MHz, VDD= 5.0V, TA = +25°C, unless otherwise noted. Minimum and
Maximum Specifications are Guaranteed over Frequency and Temperature.
Tested in a 50Ώ system using the
external circuits shown on page 3.
Characteristics
Frequency Range
Small Signal Gain
Input Return Loss
Power Output (P1dB)
Power Output (saturated)
Power Output (saturated)
Power Added Efficiency
Drain Current
Load VSWR for Output Stabilitv
Thermal Resistance
Symbol
f
G
RL
P1dB
P
SAT
Conditions
Min
800
Typ
29.0
-15.0
29.5
Max
1675
Units
MHz
dB
dB
dBm
dBm
dBm
%
PIN
=
-10 dBm
PIN= +5
dBm,f=
915 MHz
PIN= +5 dBm,
f'
= 1675 MHz
PIN= +5 dBm,f= 1675 MHz
PIN= +5 dBm
Source VSWR < 1.2: 1
Junction to GND
29
40
31.0
30.5
50
500
10:1
35
600
P
SAT
η
IDD
VSWR
θ
JC
mA
°C/W
Available exclusively from Richardson Electronics, Ltd. - 800-737-6937 (U.S. & Canada) - 630-208-3637 (International) -
or visit
www.rfwireless.rell.com.
See important product notice on last page of this document.
Internal Richardson Document # Origination Date:
Rev: V1
Page 1/5
June 2007
Date: Sep 2009
© 2008, Richardson Electronics, LTD
PM2111G
Available exclusively from Richardson Electronics, Ltd. - 800-737-6937 (U.S. & Canada) - 630-208-3637 (International) -
or visit
www.rfwireless.rell.com.
See important product notice on last page of this document.
Internal Richardson Document # Origination Date:
Rev: V1
Page 2/5
June 2007
Date: Sep 2009
© 2008, Richardson Electronics, LTD
PM2111G
Recommended Matching Networks for the PM2111G
Available exclusively from Richardson Electronics, Ltd. - 800-737-6937 (U.S. & Canada) - 630-208-3637 (International) -
or visit
www.rfwireless.rell.com.
See important product notice on last page of this document.
Internal Richardson Document # Origination Date:
Rev: V1
Page 3/5
June 2007
Date: Sep 2009
© 2008, Richardson Electronics, LTD
PM2111G
Application Information
The metalized bottom side contact area of the
amplifier and the associated matching networks
must have a continuous ground plane or the
amplifier performance may be degraded.
Terminate pins 1, 3, 8 and package base to a
common ground pad. This ground pad must
provide a connection to the back side of the
ground plane with plated via holes. It is
important to provide a good thermal path
for
the
PM2111G since the device can dissipate up to
1.9 Watts of continuous average power.
The PM2111G requires external input, output,
and interstage matching
for
proper operation.
The input match is accomplished using C2, L1,
R1 and TRL1 RI also serves to reduce low
frequency gain and improve stability. R2 is a DC
return
for
the gate of the first stage FET at 1675
MHz. R3 and C13 limits the gate current and is
only required if PIN exceeds 5 dBm. The
interstage matching consists of L4 and L5.
Output power match is achieved using L3/TRL3,
C4, and C5. L2 must be able to support DC
current in excess of 700 mA to insure reliable
operation.
Extensive
bypassing
is
recommended
for
linear digitally modulated
applications requiring good IMD performance. In
addition, a negative bias voltage may be applied
to V GG2 (pin 5) for class-AB operation. In this
mode, no power sequencing is required to
eliminate excess current draw prior to the
application of sufficient gate voltage. The typical
pinch-off voltage is -0.6V. V GG2 of -0.4 V
provides idle currents below 200 mA.
Part Number
Marking System:
The PM2111G
shall be
marked as follows:
Model Number:
PM2111G
Or
VR2111G
Lot Date Code:
YYWW
Pin Connections
Pin#
1
2
3
4
5
6
7
8
Base
Function
GND
RFIN/VGGI
GND
VOOI
VGG2
RFOlrr/VOD2
RFollT/VDD2
GND
GND
Part
C1
C2
C3
C4
C5
C6
C7
C8
C9
C10
C11
C12
CD13
L1
TRL1
List of Components
800-900 MHz
Value
33 pF
33 pF
5.6 pF
33 pF
1000 pF
0.1µF
6.8µF
33 pF
1000 pF
56 pF
12nH
1550-1675 MHz
Value
33 pf
3.0 pf
3.0 pf
1.2 pF
1.2 pF
33 DF
1000 pF
0.1µF
6.8µF
33 pF
33 pF
0.1 pF
56 pF
θ
= 15
f=
1675 MHz
Zo = 50
Ώ
Size
0603
0603
0603
0603
0603
0603
0603
0603
0603
0603
0603
0603
0603
0805
L2/TRL2
18.5 nH
θ=
39
f=
1675 MHz
Zo = 95
Ώ
0805
L3/TRL3
1.8
ηH
θ6=29
f=
1675 MHz
0805
Zo = 50
Ώ
TRL4
θ
= 16
f=
]675 MHz
Zo = 50
Ώ
L4
L5
R1
R2
R3
6.8
ηH
4.7 nH
47
Ώ
5.1Ώ
0805
0805
0603
0603
0603
680
Ώ
20
Ώ
20
Ώ
Available exclusively from Richardson Electronics, Ltd. - 800-737-6937 (U.S. & Canada) - 630-208-3637 (International) -
or visit
www.rfwireless.rell.com.
See important product notice on last page of this document.
Internal Richardson Document # Origination Date:
Rev: V1
Page 4/5
June 2007
Date: Sep 2009
© 2008, Richardson Electronics, LTD
PM2111G
Ordering Information
Part Number
PM2111G
Richardson Electronics
40W267 Keslinger Road
P.O. Box 393
LaFox, IL 60147
Telephone: (800) 737- 6937
(630) 208-3637
Fax: (630) 208-2550
Internet:
rfwireless.rell.com
E-Mail:
rwc@rell.com
IMPORTANT NOTICE
RICHARDSON ELECTRONICS, LTD AND ITS AFFILIATES RESERVE THE RIGHT TO MAKE CHANGES TO
THE PRODUCT(S) OR INFORMATION CONTAINED HEREIN WITHOUT NOTICE. RICHARDSON
ELECTRONICS ASSUMES NO RESPONSIBILITY FOR ANY ERRORS WHICH MAY APPEAR IN THIS
DOCUMENT.
WARRANTY INFORMATION APPLICABLE TO THE PRODUCT IDENTIFIED HEREIN IS AVAILABLE UPON
REQUEST. NOTHING CONTAINED HEREIN SHALL CONSTITUTE A WARRANTY, REPRESENTATION OR
GUARANTEE OF ANY KIND. RICHARDSON ELECTRONICS EXPRESSLY DISCLAIMS ALL OTHER
WARRANTIES, EXPRESS AND/OR IMPLIED INCLUDING BUT NOT LIMITED TO WARRANTIES OF
MERCHANTABILITY, AND OF FITNESS FOR A PARTICULAR PURPOSE, USE OR APPLICATION.
NO PART OF THIS DOCUMENT MAY BE COPIED OR REPRODUCED IN ANY FORM OR BY ANY MEANS
WITHOUT THE PRIOR WRITTEN CONSENT OF RICHARDSON ELECTRONICS, LTD.
WARNING
RICHARDSON ELECTRONICS PRODUCTS ARE NOT INTENDED FOR USE IN LIFE SUPPORT
APPLIANCES, DEVICES OR SYSTEMS. USE OF A RICHARDSON ELECTRONICS PRODUCT IN ANY
SUCH APPLICATION WITHOUT WRITTEN CONSENT IS PROHIBITED.
Available exclusively from Richardson Electronics, Ltd. - 800-737-6937 (U.S. & Canada) - 630-208-3637 (International) -
or visit
www.rfwireless.rell.com.
See important product notice on last page of this document.
Internal Richardson Document # Origination Date:
Rev: V1
Page 5/5
June 2007
Date: Sep 2009
© 2008, Richardson Electronics, LTD
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