MA-COM AM55

AM55-0023
Variable Voltage Gain Control Amplifier
0.8 - 2.0 GHz
Functional Block Diagram
Features
•
•
•
•
•
Highly Integrated Variable Voltage Gain Control Amplifier
Operates with 3.0 V to 5 V Supply Voltage
Greater than 40 dB dynamic range
High Output P1dB: +17 dBm @ 3 V, 19 dBm @ 5V
Low Cost 5 mm FQFP-N Package
RF Out
RF In
Description
M/A-COM’s AM55-0023 is a high performance, voltage
controlled, variable gain amplifier. It has been designed for use
in a broad range of applications including cellular base stations
and mobile radio where AGC is required to increase system
dynamic range.
The gain control operates best in the 900 MHz range and also
has useable gain to 2.5 GHz. DC current is low at 160 mA at
3V bias and 200 mA at 5V bias. The package is a low cost
MLF.
The AM55-0023 is fabricated using M/A-COM’s 0.5 micron
low noise GaAs MESFET process. The process features full
passivation for performance and reliability.
VCTL2
VCTL1
Ordering Information
Part Number
Package
AM55-0023
FQFP-N 5.0 mm Plastic Package
AM55-0023TR
Forward Tape and Reel 1
AM55-0023RTR
Reverse Tape and Reel 1
AM55-0023SMB
Sample Board
1.
If specific reel size is required, consult factory for part number
assignment.
Electrical Specifications T A = +25° C
Parameter
Gain
Attenuation Range
I/P Return Loss
O/P Return Loss
Units
Min.
Typ.
Frequency = 0.9 GHz
Test Conditions
dB
23
25
Frequency = 2.0 GHz
dB
10
12
Frequency = 0.9 GHz
dB
40
44
Frequency = 2.0 GHz
dB
37
41
Frequency = 0.9 GHz
dB
14
17
Frequency = 2.0 GHz
dB
7
10
Frequency = 0.9 GHz
dB
11
14
Frequency = 2.0 GHz
dB
10
13
dBm
14
18
Noise Figure (min attn)
Frequency = 0.9 GHz
P1dB
Max P1dB when VDDB1,2,3 at 5 V
IMD
VDDB = 5 V
dB
29
32
VDDA = 5 V
dB
25
28
Specifications subject to change without notice.
n North America: Tel. (800) 366-2266, Fax (800) 618-8883
n Asia/Pacific: Tel.+81-44-844-8296, Fax +81-44-844-8298
n Europe: Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020
Visit www.macom.com for additional data sheets and product information.
dB
9
Max.
12
V 2.0
1
Variable Voltage Gain Control Amplifier, 2.0 GHz
AM55-0023
Pin Configuration
Operating Instructions
Two pins, VCTL1 and VCTL2 control the attenuation function
of this part. Varying these pins between 0 and 4.5 V controls the
attenuation. VCTL1 should be controlled first to avoid
degrading the input match and noise figure until more
attenuation is needed. VCTL1 controls an attenuator with 30
dB of range and VCTL2 15dB of range.
PIN
The AM55-0023 has two sets of Vdd pins. VDDA1,2 ,3 and
VDDB1,2,3. VDDA should be supplied with 5 V. This voltage
is internally stepped down to 3 V to reduce current
consumption. If current consumption is not a concern OR only
3 V is available to the part then the VDDB pins should be used.
Using the VDDB pins with 5 V will also give greater IP3/IMD
performance (See graphs).
Note: When using one set of bias pins the other should be left
open circuited.
1
Absolute Maximum Ratings
Parameter
Absolute Maximum
Input Power2
+20 dBm
Operating Voltages2
VDDA/B1,2,3 = +6 volts
Operating Temperature
-40 °C to +85 °C
Storage Temperature
-65 °C to +150 °C
1. Exceeding any one or combination of these limits may cause
permanent damage.
2. Ambient Temperature (T A) = +25°C
No.
PIN
Name
Description
1
Input
2
NC
3
NC
4
NC
5
VCTL2
6
NC
7
NC
8
NC
9
VCTL1
10
NC
11
NC
12
NC
13
Output
RF Output
14
VDDB3
Bias Pins
15
VDDA3
Bias Pins
16
VDDA2
Bias Pins
17
VDDB2
Bias Pins
18
VDDB1
Bias Pins
19
VDDA1
Bias Pins
20
NC
RF Input
Second Attenuation Control
First Attenuation Control
Typical Performance Curves
Input Return Loss
(over full attenuation range)
Output Return Loss
(over full attenuation range
0
0
-5
-5
-10
-15
dB
dB
-10
-15
-20
-25
-30
-35
-20
-40
-45
-25
0.6
0.6
0.8
1
1.2
1.4
1.6
1.8
2
0.8
1
1.2
1.4
FREQUENCY (GHz)
1.6
1.8
2
FREQUENCY (GHz)
Specifications subject to change without notice.
n North America: Tel. (800) 366-2266, Fax (800) 618-8883
n Asia/Pacific: Tel.+81-44-844-8296, Fax +81-44-844-8298
n Europe: Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020
Visit www.macom.com for additional data sheets and product information.
V 2.0
2
Variable Voltage Gain Control Amplifier, 2.0 GHz
AM55-0023
Typical Performance Curves (Cont’d)
Attenuation Range
Noise Figure
35
12
25
10
15
8
dB
dB
5
-5
6
4
-15
2
-25
-35
0.6
0.8
1.0
1.2
1.4
1.6
1.8
0
0.4
2.0
0.6
0.8
FREQUENCY (GHz)
1.0
1.2
1.4
FRQUENCY (GHz)
Swept IMD (VDDB Pins at 5V)
Swept IMD (VDDA Pins at 5V)
30
40
35
25
30
25
dB
dB
20
15
20
15
10
10
5
5
0
0
0.5
0.6
0.7
0.8
0.9
1
1.1
1.2
0.5
1.3
0.6
0.7
FREQUENCY (GHz)
P1dB at 800 MHz (VDDA Pins 5V Supply)
1.0
1.1
1.2
1.3
P1dB at 900 MHz (VDDA Pins 5V Supply)
0
20
0
18
-1
-2
12
-3
10
8
-4
6
4
16
-14
-12
-10
-8
-3
6
-4
0
-5
-25
-6
-20
PIN (dBm)
0
-3
-4
-5
-10
-5
0
PIN (dBm)
Specifications subject to change without notice.
n North America: Tel. (800) 366-2266, Fax (800) 618-8883
n Asia/Pacific: Tel.+81-44-844-8296, Fax +81-44-844-8298
n Europe: Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020
Visit www.macom.com for additional data sheets and product information.
POUT (dBm)
-2
Relative Gain (dB)
-1
-15
-5
P1dB at 900 MHz (VDDB Pins 5V Supply)
P1dB at 800 MHz (VDDB Pins 5V Supply)
-20
-10
PIN (dBm)
22
20
18
16
14
12
10
8
6
4
2
0
-25
-15
25
0
20
-0.5
-1
15
-1.5
10
-2
5
-2.5
0
Relative Gain (dB)
-16
-2
10
8
2
-6
-18
12
4
-5
2
0
-20
-1
14
POUT (dBm)
14
Relative Gain (dB)
16
Relative Gain (dB)
18
POUT (dBm)
0.9
FREQUENCY (GHz)
20
POUT (dBm)
0.8
-3
-5
-3.5
-20
-15
-10
-5
0
PIN (dBm)
V 2.0
3
Variable Voltage Gain Control Amplifier, 2.0 GHz
5 mm FQFP-N - 201
5 mm FQFP-N - 20
A
A2
D
D1
E
AM55-0023
Measurement (mm)
A3
A1
E1
Dim.
Min.
Nom.
Max.
A
0.80
0.90
1.00
A1
0
0.02
0.05
A2
0
0.65
1.00
A3
b
20 x b
D2
0.23
D
e
D2
4xe
L
e
4xe
1. See JEDEC MO-220A VHHC for additional dimensional and
tolerance information
External Components1, 2
VDDA/B
C
0.30
0.38
5.00 basic
D1
E2
L
0.25 ref.
4.75 basic
1.25
2.70
e
0.65 basic
E
5.00 basic
E1
4.75 basic
3.25
E2
1.25
2.70
3.25
L
0.35
0.55
0.75
Sample Board
VDDA/B
L
C
VDDA/B
L
C
RFOUT
RFIN
VCTL2
VCTL1
Component
Value
L
68nH
C
100pF
1. See Operating Instructions for details on VDD pins.
2. Requires 6 external components.
Specifications subject to change without notice.
n North America: Tel. (800) 366-2266, Fax (800) 618-8883
n Asia/Pacific: Tel.+81-44-844-8296, Fax +81-44-844-8298
n Europe: Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020
Visit www.macom.com for additional data sheets and product information.
V 2.0
4