AM55-0004 Просмотр технического описания (PDF) - Tyco Electronics
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AM55-0004 Datasheet PDF : 8 Pages
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250 mW Linear Power Amplifier and T/R Switch
AM55-0004
Absolute Maximum Ratings1
Parameter
Max. Input Power2
Operating Voltages2
Operating Temperature
Storage Temperature
Absolute Maximum
+23 dBm
VDD = 7 V
VGG = -5 V
VDD - VGG = 8 V
-40°C to +85°C
-65°C to +150°C
1. Exceeding these limits may cause permanent damage.
2. Ambient temperature (TA) = +25°C
Pin Configuration
Pin No. Pin Name
1
GND
Description
DC and RF Ground
2
VSW
Complimentary T/R Switch Control,
-4 V Tx mode/0 V Rx mode
3
GND
DC and RF Ground
4
Tx IN
Transmit side of T/R switch
5
GND
DC and RF Ground
6
GND
DC and RF Ground
7
ANT IN/OUT Common port of T/R switch which
is connected to the antenna
8
GND
DC and RF Ground
9
Rx OUT
Receive side of T/R switch
10
GND
DC and RF Ground
11
GND
DC and RF Ground
12
VDD1
Positive bias for the first stage of
PA, +2.7 to +6.0 volts
13
SAVE Tx
Sleep mode control of first stage of
PA ONLY
0 V — first PA stage on
-4 V — first PA stage off
14
GND
DC and RF Ground
15
GND
DC and RF Ground
16
PA IN
RF input of the Power Amplifier
17
GND
DC and RF Ground
18
VG1
Negative bias control for the first PA
stage, voltage divider is on the MMIC,
adjusted to set VDD1 quiescent bias
current, which is typically 30 mA.
Input impedance: 10 k Ω
19
GND
DC and RF Ground
20
VG2
Negative bias control for the second
PA stage, adjusted to set VDD2
quiescent bias current, which is
typically 65 mA.
Input impedance: > 1MΩ
21
GND
Second Stage DC and RF Ground
22
GND
Second Stage DC and RF Ground
23
GND
Second Stage DC and RF Ground
24
GND
Second Stage DC and RF Ground
25
PA OUT
RF output of the Power Amplifier
26
VDD2
Positive bias for the second stage of
the PA, +2.7 to +6.0 volts
27
VSW
T/R Switch Control, 0 V Tx mode/-4 V
Rx mode
28
GND
DC and RF Ground
Truth Table
Operating Mode
PA Tx
PA Sleep
T/R Switch Tx
T/R Switch Rx
X - Don’t Care
VSW
VSW SAVE Tx
X
X
0V
X
X -4.0 Volts
0 Volts -4.0 Volts X
-4.0 Volts 0 Volts
X
Functional Diagram and Pin Configuration
1
GND
VSW
GND
Tx IN
GND
GND
ANT IN/OUT
GND
Rx OUT
GND
GND
VDD1
SAVE Tx
GND
14
28
GND
VSW
VDD12
PA OUT
GND
GND
GND
GND
VGG12
GND
VGG12
GND
PA IN
GND
15
Specifications Subject to Change Without Notice
V 2.00
M/A-COM Inc.
s
1011 Pawtucket Boulevard, Lowell, MA 01853 USA
s
Telephone: 800-366-2266
2
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