ETC AM55

Preliminary Specifications
250 mW Power Amplifier with T/R and Diversity Switches
2.4 - 2.5 GHz
AM55-0003
Features
●
●
●
●
●
SSOP-28
Highly Integrated Power Amplifier With T/R and
Diversity Switches
Operates Over 2.7 V to 6 V Supply Voltage
High Linear Output Power (P1dB: +24 dBm)
Individual Gate Control for Each Amplifier Stage
Low Cost SSOP-28 Plastic Package
+.0025
.0275 -.0025
0,7
+.0037
.3900 -.0041
9,91 +0,09
-0,1
+0,06
-0,06
+.0034
.1540 -.0043 .236 ±.008
+0,09 5,99 ±0,2
3,91 -0,11
PIN 1
Description
.057 ±.003
1,45 ±0,08
M/A-COM’s AM55-0003 is a GaAs power amplifier with
integrated transmit/receive and an antenna diversity switch
in a low cost SSOP 28 plastic package. The power
amplifier delivers +24 dBm of linear power with high
efficiency and can be operated with voltages as low as 2.7
volts. The power amplifier switch is fully monolithic. The
T/R and diversity switches achieve good insertion loss and
isolation without degrading the overall linearity. The
switches can be controlled with CMOS logic levels.
.007 ±.003
0,18 ±0,08
+.004
.010 -.001
0,25 +0,1
-0,03
.025
0,64
.004 (0,10)
Dimensions are inches over millimeters
The AM55-0003 is ideally suited for QPSK, BPSK or other
linearly modulated systems in the 2.4 GHz ISM frequency
band. It can also be used in GFSK systems where levels of
+25 dBm are required. Typical applications include WLAN
and wireless portable data collection. This power amplifier
can be combined with a transceiver IC (MD58-0001 or
MD58-0002) to form a complete RF front end.
+.0018
.0080 -.0005
0,2 +0,05
-0,01
.015 (0,38) X 45°
0-8°
+.022
.028 -.013
+0,56
0,71 -0,33
Ordering Information
Part Number
AM55-0003
AM55-0003TR
AM55-0003RTR
AM55-0003SMB
M/A-COM's AM55-0003 is fabricated using a mature
0.5-micron gate length GaAs process. The process features
full passivation for increased performance and reliability.
*
Description
SSOP 28-Lead Plastic Package
Forward Tape & Reel*
Reverse Tape & Reel*
Designer’s Kit
If specific reel size is required, consult factory for part number
assignment.
Typical Electrical Specifications
Test Conditions: Frequency: 2.45 GHz, VDD 1,2, 3 = 5 V±5%, VG1 adjusted for 20 mA quiescent bias on VDD1, VG 2
adjusted for 70 mA quiescent bias on VDD2 , VG3 adjusted for 90 mA quiescent bias on VDD3 , TA = +25°C
Parameter
Units
Min.
Typ.
Max.
dB
24
28
32
Output Power @ P1dB
dBm
22.5
Power Amplifier
Linear Gain
VSWR In/Out
1.75:1
24.5
Second Harmonic @ P1dB
dBc
-20
0
Third Harmonic @ P1dB
dBc
-30
-10
IDD @ P1dB (VDD1 + VDD2 + VDD3)
T/R and Diversity Switches
mA
270
375
Insertion Loss
dB
Isolation
dB
1.2
10
12
VSWR In/Out
1.5:1
Specifications Subject to Change Without Notice
M/A-COM Inc.
■
V 2.0
1011 Pawtucket Boulevard, Lowell, MA 01853 USA
1
■
Telephone: 800-366-2266
250 mW Power Amplifier with T/R and Diversity Switches
1
Pin Configuration
Absolute Maximum Ratings
Pin No.
Pin Name
Description
1
ANT CTRL
Antenna selection: Select ANT 1
(0V) or ANT 2 (+5 V)
2
ANT COMMON
Common Port of Diversity Switch
3
GND
4
ANT 1
5
GND
6
ANT 2
7
GND
8
RX OUT
9
VG2
Output #1 of Diversity Switch
Output #2 of Diversity Switch
DC and RF Ground
Truth Table
Negative bias control for the second
PA stage, adjusted to set VDD2
quiescent bias current, which is
typically 70 mA. Typical voltage
at pin = -0.55 V
Input impedance: > 1 MΩ
11
VDD1
Positive bias for the first stage of the
PA, 2.7 to 6 volts
12
GND
DC and RF Ground
13
GND
DC and RF Ground
14
VG1
Negative bias control for the first PA
stage, adjusted to set VDD1 quiescent
bias current, which is typically 20 mA.
Typical voltage at pin = -0.75 V
Input impedance: > 1 MΩ
RF IN
Control Line
ANT
T/R
CTRL
CTRL
X
1
X
0
0
X
1
X
1
GND
DC and RF Ground
20
GND
DC and RF Ground
21
GND
DC and RF Ground
22
GND
DC and RF Ground
23
VDD3
Positive bias for the third stage of the
PA, 2.7 to 6 volts
24
GND
DC and RF Ground
25
RF OUT
26
T/R CTRL
27
VDD TR
28
VDD ANT
VDD ANT
ANT COMMON
VDD TR
GND
T/R CTRL
RF OUT
ANT 1
Positive bias for the second stage of
the PA, 2.7 to 6 volts
19
28
ANT CTRL
Negative bias control for the third PA
stage, adjusted to set VDD3 quiescent
bias current, which is typically 90 mA.
Typical voltage at pin = -0.95 V
Input impedance: > 1 MΩ
VDD2
GND
GND
ANT 2
VDD3
GND
GND
RX OUT
GND
VG2
GND
GND
GND
VDD1
VDD2
GND
VG3
GND
GND
VG1
RF IN
14
15
RF output of T/R switch and power
amplifier for transmit mode
0 V for transmit mode, +5 V for
receive mode
VDD for T/R switch
VDD for Diversity Switch
Specifications Subject to Change Without Notice
M/A-COM Inc.
Receive
Transmit
ANT 1
ANT 2
Functional Diagram and Pin Configuration
DC and RF Ground
VG3
Operating
Mode
X - Don’t Care
“0” = 0 V to 0.2 V @ 100 µA
“1” = VDD to VDD - 0.2 V @ 200 µA
RF Input of the Power Amplifier
GND
18
+23 dBm
VDD = 8 V
VGG = -8 V
-40°C to +85°C
-65°C to +150°C
Output of T/R Switch for receive mode
DC and RF Ground
17
Absolute Maximum
1. Exceeding these limits may cause permanent damage.
2. Ambient temperature (TA) = +25°C
3. |VDD| + |VGG| not to exceed 12 volts.
DC and RF Ground
GND
16
Parameter
Max. Input Power 2
Operating Voltages 2,3
Operating Temperature
Storage Temperature
DC and RF Ground
10
15
AM55-0003
■
V 2.0
1011 Pawtucket Boulevard, Lowell, MA 01853 USA
2
■
Telephone: 800-366-2266
250 mW Power Amplifier with T/R and Diversity Switches
Power Amplifier CW Performance at
Various Supply Voltages1
Power Amplifier Small Signal
Performance1
LINEAR GAIN, VDD1 = VDD2 = VDD3
POWER OUTPUT @ 2.45 GHz, VDD1 = VDD2 = VDD3
35
30
6V
30
5V
6V
POWER (dBm)
25
5V
GAIN (dB)
AM55-0003
4V
25
3V
20
15
20
3V
4V
15
10
5
10
2.0
2.2
2.4
2.6
2.8
-19
3.0
-14
-9
-4
FREQUENCY (GHz)
POWER ADDED EFFICIENCY (%)
@ 2.45 GHz, VDD1 = VDD2 = VDD3
INPUT MATCH
-5
5V
-10
5V
6V
-15
EFFICIENCY (%)
RETURN LOSS (dB)
50
-20
-25
3V
2.0
2.2
40
30
20
4V
3V
10
2.4
2.6
2.8
0
3.0
-19
FREQUENCY (GHz)
-14
-9
-4
1
INPUT POWER (dBm)
GAIN COMPRESSION @ 2.45 GHz, VDD1 = VDD2 = VDD3
OUTPUT MATCH
0
COMPRESSION (dBm)
0
-5
6V
5V
-10
3V
-15
4V
-20
2.0
6V
4V
-30
RETURN LOSS (dB)
1
POWER INPUT (dBm)
2.2
2.4
2.6
2.8
-1
3V
-2
4V
-3
5V
-4
6V
-5
-6
-7
3.0
-19
FREQUENCY (GHz)
-14
-9
-4
1
INPUT POWER (dBm)
1. All data measured at TA = +25°C and VG1, VG2 and VG3 adjusted for first stage quiescent current of 20 mA, second stage current of 70 mA
and third stage current of 90 mA, respectively.
Specifications Subject to Change Without Notice
M/A-COM Inc.
■
V 2.0
1011 Pawtucket Boulevard, Lowell, MA 01853 USA
3
■
Telephone: 800-366-2266
250 mW Power Amplifier with T/R and Diversity Switches
AM55-0003
Power Amplifier Spurious Response at
Various Supply Voltages1
Power Amplifier Temperature
Performance1
THIRD ORDER INTERMODULATION [email protected] 2.45 GHz,
(TONE SPACING 600 kHz)
LINEAR GAIN, VDD1 = VDD2 = VDD 3 = +5 V
50
35
6V
-20°C
40
+25°C
IMR (dBc)
GAIN (dB)
30
25
20
+70°C
5V
30
3V
20
15
4V
10
10
2.0
2.2
2.4
2.6
2.8
9
3.0
POWER OUTPUT @ 2.45 GHz,
VDD1 = VDD2 = VDD 3 = +5 V
70
30
-20°C
dBc
15
+70°C
10
25
3V
5V
55
6V
50
45
+25°C
4V
40
5
35
0
-19
-14
-9
-4
15
1
17
19
21
23
25
FUNDAMENTAL POUT (dBm)
INPUT POWER (GHz)
THIRD HARMONIC RATIO @ 2.45 GHz,
VDD1 = VDD2 = VDD 3
GAIN COMPRESSION @ 2.45 GHz,
VDD1 = VDD2 = VDD3 = +5 V
60
6V
+70°C
55
-1
-20°C
5V
50
-2
dBc
COMPRESSION (dB)
21
SECOND HARMONIC RATIO @ 2.45 GHz,
VDD1 = VDD2 = VDD3
60
20
0
17
65
25
POWER (dBm)
13
FUNDAMENTAL POUT/ TONE (dBm)
FREQUENCY (GHz)
+25°C
-3
45
-4
40
-5
35
4V
-20
-15
-10
-5
0
15
5
17
19
3V
21
23
25
FUNDAMENTAL POUT (dBm)
INPUT POWER (dBm)
1. All data measured at TA = +25°C and VG1, VG2 and VG3 adjusted for first stage quiescent current of 20 mA, second stage current of 70 mA and
third stage current of 90 mA, respectively.
Specifications Subject to Change Without Notice
M/A-COM Inc.
■
V 2.0
1011 Pawtucket Boulevard, Lowell, MA 01853 USA
4
■
Telephone: 800-366-2266
250 mW Power Amplifier with T/R and Diversity Switches
Transmit/Receive Switch Performance1
Diversity Switch Performance1
-5
-1
-10
-2
-15
-3
-20
-4
-25
-30
-5
2.2
2.4
2.6
2.8
0
-5
-1
-7
-2
-9
-3
-11
-4
-13
-5
3.0
2.0
2.2
2.4
FREQUENCY (GHz)
2.8
-15
3.0
FREQUENCY (GHz)
T/R SWITCH MATCH (RECEIVE MODE)
0
RETURN LOSS (dB)
0
RETURN LOSS (dB)
2.6
ISOLATION (dB)
0
INSERTION LOSS (dB)
DIVERSITY SWITCH INSERTION
LOSS/ISOLATION
ISOLATION (dB)
INSERTION LOSS (dB)
T/R INSERTION LOSS/ISOLATION
(RECEIVE MODE)
2.0
AM55-0003
-5
INPUT
-10
-15
OUTPUT
DIVERSITY SWITCH MATCH
-5
-10
INPUT
-15
-20
OUTPUT
-25
-20
2.0
2.2
2.4
2.6
2.8
3.0
2.0
2.2
2.4
FREQUENCY (GHz)
2.6
2.8
3.0
FREQUENCY (GHz)
HARMONIC LEAKAGE AT ANT 1/ANT 2 @ 2.45 GHz 2
LEAKAGE (dBm)
-20
-30
THIRD HARMONIC
-40
-50
-60
SECOND HARMONIC
-70
-80
10
-7
-4
-1
2
FUNDAMENTAL INPUT POWER (dBm)
1. All data measured with VDD TR = VDD ANT = +5 V, TA = +25°C.
2. Measured at 2.45 GHz at RF IN. Output measured at ANT 1 or ANT 2, with RF OUT and ANT COMMON terminated in 50 Ω.
Specifications Subject to Change Without Notice
M/A-COM Inc.
■
V2.0
1011 Pawtucket Boulevard, Lowell, MA 01853 USA
5
■
Telephone: 800-366-2266
250 mW Power Amplifier with T/R and Diversity Switches
AM55-0003
Recommended PCB Configuration
Cross-Section View
Layout View
0.0690 in.
RF Traces + Components
RF Ground
DC Routing
R1
R2
R3
Customer Defined
0.975 in.
R4
R5
R6
C14
Shaded traces are vias to DC routing layer and traces on DC
routing layer.
C13
C23
C15
C3
C12
Biasing Procedure
C5
The AM55-0003 requires that VGG bias be applied prior to any
VDD bias. Permanent damage may occur if this procedure is
not followed. All FETs in the PA will draw excessive current
and damage internal circuitry.
C11
C16
C16
C4
The PCB dielectric between RF traces and RF ground layers
should be chosen to reduce RF discontinuities between 50-Ω
lines and package pins. M/A-COM recommends an FR-4
dielectric thickness of 0.008 in. (0.2 mm), yielding a 50-Ω line
width of 0.015 in. (0.38 mm). The recommended metalization
thickness is 1 oz. copper.
C25
External Circuitry Parts List
0.625 in.
C24
Label
C1 - C6
C23 - C24
C7 - C16
C17 - C22
R1, R6
R3, R5
R2
R4
C7
C10
C9
C8
Value
22 pF
22 pF
1000 pF
0.01 µF
1.5 kΩ
5 kΩ
12 kΩ
1 kΩ
Purpose
Bypass (GHz)
DC Block
Bypass (MHz)
Bypass (kHz)
FET Gate
Divider Network
All off-chip components are low-cost surface mount components
obtainable from multiple sources. (0.020 in. x 0.040 in. or
0.030 in. x 0.050 in.)
External Circuitry
C9
ANT CTRL
C8
C10
C17
ANT
COMMON
1
28
2
27
3
26
ANT 1
4
25
ANT 2
5
24
6
23
7
22
8
21
9
20
10
19
11
18
12
17
13
14
14
16
15
C25
RX OUT
V G2
R3
R3
C11
R6
V
DD1
C22
C5
C12
V G1
R2
R2
R5
VVDDDD(T/R ANT)
(T/R,ANT)
C21
T/R CTRL
C7
C20
RF OUT
C24
V DD3
C4
C16
C19
C3
C15
C18
V DD2
C14
R1
R1
R4
V G3
C13
RF IN
C23
Specifications Subject to Change Without Notice
M/A-COM Inc.
■
V 2.0
1011 Pawtucket Boulevard, Lowell, MA 01853 USA
6
■
Telephone: 800-366-2266
250 mW Power Amplifier with T/R and Diversity Switches
AM55-0003
Designer’s Kit (AM55-0003SMB)
The AM55-0003SMB Designer's Kit allows for immediate evaluation of M/A-COM's AM55-0003 integrated power amplifier
with T/R and diversity switches. The evaluation board consists of an AM55-0003, recommended external surface mount
circuitry, RF connectors and a DC multi-pin connector, all mounted to a multi-layer FR-4 PCB. Other items included in the
Designer's Kit: a floppy disk (with typical performance data and a .DXF file of the recommended PCB layout) and any
additional Application Notes. The AM55-0003SMB evaluation PCB and block diagram are illustrated below with all
functional ports labeled.
P/A Switch Sample Board
Functional Block Diagram
RXOUT
PIN
PIN 19 19
RFIN
IN
RF
PIN 2
RF
IN
RF IN
DIV CTRL
VG2
VDD1
RX
ANT2 OUT
VG1
VDD2
VG3
VDD3
PIN 2
TR CTRL
PIN 20
PIN 20
PIN 1
PIN 1
5V (DIV, TR)
#20
RX
OUT
RX OUT
(LNAIN)
IN)
(LNA
ANT1
ANT 2
ANT 22
ANT
ANT 11
ANT
ANT
1
ANT COMMON
RF OUT
RF OUT
RFRFOUT
OUT
ANT COMMON
ANT COMMON
ANT
COMMON
(DIV
SW)
(DIV SW)
DC Connector Pinout
PCB DC
Connector
Function
Device
Pin Number
PCB DC
Connector
Function
Device
Pin Number
1
GND
N/C
2
ANT CTRL (0 V/ +5 V)
1
11
N/C
N/C
12
VG3
17
3
N/C
N/C
4
N/C
N/C
13
N/C
N/C
14
VDD2 (+5 V)
18
5
N/C
N/C
6
VG2
9
15
N/C
N/C
16
VDD3 (+5 V)
23
7
VSW
N/C
8
VDD1 (+5 V)
11
17
N/C
N/C
18
T/R CTRL (0 V/ +5 V)
8
9
N/C
N/C
19
GND
N/C
10
VG1
14
20
VDD TR, VDD ANT(+5 V)
27, 28
Specifications Subject to Change Without Notice
M/A-COM Inc.
■
V 2.0
1011 Pawtucket Boulevard, Lowell, MA 01853 USA
7
■
Telephone: 800-366-2266
250 mW Power Amplifier with T/R and Diversity Switches
AM55-0003
AM55-0003SMB Biasing Procedure
In order to prevent transients which may damage the MMIC, please adhere to the following procedure.
● Turn on all power supplies and set all voltages to 0 volts BEFORE connecting the power supplies
to the DC connector.
● Apply a -5.0 volt supply to DC connector pin 10 (V ).
G1
● Apply a -5.0 volt supply to DC connector pin 6 (V ).
G2
● Apply a -5.0 volt supply to DC connector pin 12 (V ).
G3
● Apply a +5.0 volt supply to the DC connector pin 20 (V
DD TR, VDD ANT).
● Apply a +5.0 volt supply to the DC connector pin 8 (V
DD1).
● Apply a +5.0 volt supply to the DC connector pin 14 (V
DD2).
● Apply a +5.0 volt supply to the DC connector pin 16 (V
DD3).
● Apply a GND or +5.0 volt supply to the DC connector pin 18 (T/R CTRL, see truth table for
desired mode).
● Apply a GND or +5.0 volt supply to the DC connector pin 2 (ANT CTRL, see truth table for
desired mode).
● Adjust V
G1, VG2, VG3 supplies to -5 volts.
● Adjust all V
DD supplies to +5 volts.
● Adjust V
G1 supply for desired VDD1 quiescent current (typically 20 mA, VG1 nominally -2.5 volts).
● Adjust V
G2 supply for desired VDD2 quiescent current (typically 70 mA, VG2 nominally -2.5 volts).
● Adjust V
G3 supply for desired VDD3 quiescent current (typically 90 mA, VG3 nominally -2.5 volts).
● To power off, reverse above procedure.
1) Set all VDD lines to 0 volts.
2) Set VG1, VG2 and VG3 to 0 volts.
3) Disconnect bias lines from DC connector.
4) Turn off power supplies.
Evaluation PCB and RF Connector Losses
Port Reference
Loss (dB)
RF IN
RF OUT
RX OUT (LNA IN)
ANT COMMON (DIV SW)
ANT 1
ANT 2
0.25
0.25
0.25
0.25
0.25
0.25
The DC connector on the Designer’s Kit PCB allows selection of all the device’s operating modes.
It is accomplished by one or more of the following methods.
1. A mating female multi-pin connector (Newark Electronics
Stock #46F-4658, not included)
2. Wires soldered to the necessary pins (not included)
3. Clip leads (not included)
4. A combination of clip leads or wires and jumpers
(jumpers included as required)
Specifications Subject to Change Without Notice
M/A-COM Inc.
■
V 2.0
1011 Pawtucket Boulevard, Lowell, MA 01853 USA
8
■
Telephone: 800-366-2266