am55-0023 Tyco Electronics, am55-0023 Datasheet - Page 2

• Manufacturer Part Number: am55-0023
• Description: Variable Voltage Gain Control Amplifier
• Manufacturer: Tyco Electronics

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Specifications subject to change without notice.
Visit www.macom.com for additional data sheets and product information.
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.
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.
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.
Absolute Maximum Ratings
1. Exceeding any one or combination of these limits may cause
2. Ambient Temperature (T
Typical Performance Curves
Variable Voltage Gain Control Amplifier, 2.0 GHz
Input Power
Operating Voltages
Operating Temperature
Storage Temperature
permanent damage.
-10
-15
-20
-25
-5
0
0.6
Output Return Loss
(over full attenuation range
Parameter
2
0.8
VCTL1 should be controlled first to avoid
2
1
A
) = +25 C
FREQUENCY (GHz)
1.2
1.4
Absolute Maximum
V
-65 °C to +150 °C
DDA/B1,2,3
1
-40 °C to +85 °C
+20 dBm
1.6
= +6 volts
1.8
2
Pin Configuration
PIN
No.
10
11
12
13
14
15
16
17
18
19
20
1
2
3
4
5
6
7
8
9
-10
-15
-20
-25
-30
-35
-40
-45
-5
0
0.6
Input Return Loss
(over full attenuation range)
VDDB3
VDDA3
VDDA2
VDDB2
VDDB1
VDDA1
VCTL2
VCTL1
Output
Name
Input
PIN
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
0.8
RF Input
Second Attenuation Control
First Attenuation Control
RF Output
Bias Pins
Bias Pins
Bias Pins
Bias Pins
Bias Pins
Bias Pins
1
FREQUENCY (GHz)
1.2
Description
1.4
1.6
AM55-0023
1.8
V 2.0
2
2