AT-119SMB
器件描述：2.25 Volt Voltage Variable Absorptive Attenuator - 40 dB, 1.8.2.5 GHz
器件厂商：MACOM [Tyco Electronics]
厂商主页：http://www.macom.com
文件大小：135.16KB，共4页
Sponsor by e络盟器件资料摘要：
Parameter Absolute Maximum
Maximum Input Power +21 dBm
Supply Voltage V
CC
-1 V, + 8 V
ControlVoltage V
CTL
-1 V, V
CC
+0.5 V
Operating Temperature -40°C to +85°C
Storage Temperature -65°C to +150°C
Absolute Maximum Ratings
1
@ T
A
= +25 °C (unless otherwise specified)
1. Exceeding any one or a combination of these limits may
cause permanent damage.
Features
Single Positive Voltage Control 0 to +2.25 Volts
>50 dB Attenuation Range at 2.1 GHz
Low DC Power Consumption
Low Cost SOT-25 Plastic Package
Tape and Reel Packaging Available
Description
M/A-COM’s AT-119 is a GaAs MMIC voltage variable
absorptive attenuator in a low cost, SOT-25 five-lead,
surface mount plastic package. M/A-COM fabricates the
AT-119 with a proven monolithic GaAs self-aligned gate
process that features full chip passivation for performance
and reliability
Applications
The AT-119 is ideally suited for applications that require
fine tuning, linear attenuation with voltage, and very low
power consumption.
Typical applications for the AT-119 include automatic gain
control circuits in satellite radio receivers and other wireless
receivers.
2.25 Volt Voltage Variable Absorptive
Attenuator - 40 dB, 1.8—2.5 GHz
A
T
-119
Functional Schematic
1. V
CC
= +3.3 V
DC
@ 50 µA max.
2. V
CTL
= 0 V
DC
to +3.3 VDC @ 50 µA max.
3. External DC blocking capacitors are required on all RF
ports.
Electrical Specifications @ T
A
= +25 °C, Frequency = 2.4 GHz, V
CC
= 3.3 V
DC
1
Parameters Test Conditions Units Min Typ Max
Minimum Insertions Loss V
CTL
= 2.25 V
DC
dB 3.0 3.2
Maximum Attenuation V
CTL
= 0.5 V
DC
dB 37
Attenuation Slope 0.75 V
DC
< V
CTL
< 1.75 V
DC
dB/V 24
Return Loss 0.6 V
DC
< V
CTL
< 1.75 V
DC
dB >12
Input Power for 1 dB Change in Attenua-
tion
0 V
DC
< V
CTL
< 3.0 V
DC
dBm >10
Input 3
rd
Order Intercept Point 0 V
DC
< V
CTL
< 3.0 V
DC
dBm >20
Switching Speed 50% V
CTL
to 10% / 90% RF nSec 180
Transients mV 10 V
CTL
= 3 V
DC,
In-Band
1. All measurements in a 50-τ system unless otherwise specified. The RF ports must be blocked outside of the package from
ground or any other voltage.
3
RF
2
GND
1
RF
V
CTL
4
V
CC
5
100 pF 100 pF
Maximum Input Power +21 dBm
Supply Voltage V
CC
-1 V, + 8 V
ControlVoltage V
CTL
-1 V, V
CC
+0.5 V
Operating Temperature -40°C to +85°C
Storage Temperature -65°C to +150°C
Absolute Maximum Ratings
1
@ T
A
= +25 °C (unless otherwise specified)
1. Exceeding any one or a combination of these limits may
cause permanent damage.
Features
Single Positive Voltage Control 0 to +2.25 Volts
>50 dB Attenuation Range at 2.1 GHz
Low DC Power Consumption
Low Cost SOT-25 Plastic Package
Tape and Reel Packaging Available
Description
M/A-COM’s AT-119 is a GaAs MMIC voltage variable
absorptive attenuator in a low cost, SOT-25 five-lead,
surface mount plastic package. M/A-COM fabricates the
AT-119 with a proven monolithic GaAs self-aligned gate
process that features full chip passivation for performance
and reliability
Applications
The AT-119 is ideally suited for applications that require
fine tuning, linear attenuation with voltage, and very low
power consumption.
Typical applications for the AT-119 include automatic gain
control circuits in satellite radio receivers and other wireless
receivers.
2.25 Volt Voltage Variable Absorptive
Attenuator - 40 dB, 1.8—2.5 GHz
A
T
-119
Functional Schematic
1. V
CC
= +3.3 V
DC
@ 50 µA max.
2. V
CTL
= 0 V
DC
to +3.3 VDC @ 50 µA max.
3. External DC blocking capacitors are required on all RF
ports.
Electrical Specifications @ T
A
= +25 °C, Frequency = 2.4 GHz, V
CC
= 3.3 V
DC
1
Parameters Test Conditions Units Min Typ Max
Minimum Insertions Loss V
CTL
= 2.25 V
DC
dB 3.0 3.2
Maximum Attenuation V
CTL
= 0.5 V
DC
dB 37
Attenuation Slope 0.75 V
DC
< V
CTL
< 1.75 V
DC
dB/V 24
Return Loss 0.6 V
DC
< V
CTL
< 1.75 V
DC
dB >12
Input Power for 1 dB Change in Attenua-
tion
0 V
DC
< V
CTL
< 3.0 V
DC
dBm >10
Input 3
rd
Order Intercept Point 0 V
DC
< V
CTL
< 3.0 V
DC
dBm >20
Switching Speed 50% V
CTL
to 10% / 90% RF nSec 180
Transients mV 10 V
CTL
= 3 V
DC,
In-Band
1. All measurements in a 50-τ system unless otherwise specified. The RF ports must be blocked outside of the package from
ground or any other voltage.
3
RF
2
GND
1
RF
V
CTL
4
V
CC
5
100 pF 100 pF