Nort h Am erica: Tel. (800) 366-2266, Fax (800) 618-8883
Asia/Pacific: Tel.+81-44-844-8296, Fax +81-44-844-8298
Europe: Tel. +44 (1344) 86 9 595, Fax+44 (134 4) 30 0 020
Specifications subject to change without notice.
Visit ww w. macom.com for ad ditional data shee ts an d pr o d uct inf or m ati o n.
V 3.0
Features
•Single Positive Voltage Control 0 to +3 Volts
•40 dB Attenuation Range at 0.9 GHz
•± 2 dB Linearity from BSL
•Low DC Power Consumption
•Low Cost SOIC-8 Plastic Package
•Tape and Reel Packaging Available
SOIC-81
Electrical Spec if icat i ons: TA = +25°C1=
==
=
Parameter Test Conditions Units Min. Typ. Max.
Insertion Lo ss 0.5 - 1.0 GHz dB 2.7 3.0
1.0 - 2.0 GHz dB 3.0 3.5
Attenuation 0.5 - 1.0 GHz dB 40
1.0 - 2.0 GHz dB 35
Insertion Loss Flatness (Peak-to-Peak) 0.5 - 1.0 GHz dB ±0.5 ±0.8
1.0 - 2.0 GHz dB ±1.2 ±1.5
VSWR 2:1
Trise, Tfall 10% to 90% RF, 90% to 10% RF µS 10
Ton, Toff 50% Control to 90% RF, Control to 10% RF µS 12
Transients In-band mV 10
Description
M/A-COM’s AT-113 is a GaAs MMIC voltage variable
absorptive attenuator in a low cost SOIC 8-lead surface mount
plastic package. The AT-113 is ideally suited for use where
linear attenuation fine tuning and very low power consumption
are required.
Typical applications include radio, cellular, GPS equipment and
automatic gain/level control circu its.
The AT-113 is fabricated with a monolithic GaAs MMIC using
a mature 1-micron process. The process features full chip
passivation for increased performance and reliability.
Ordering Information
Part Number Package
AT-113 SOIC-8 Lead Plastic
AT-113TR Forward Tape and Reel1
1. If specif ic reel size is requi red, consult factory for part number
assignment.
1. All measurem ents at 1 GHz in a 50Ω system unless otherwise specified. The RF ports must be blocked out side of the package from ground or
any other voltage.
(.19/.25)
CHAMFER
(OPTIONAL
)
(0.40/1.27)
.016/.050
0°/80°
-B-
BSC.
-C-
-A-
.010
(
.25
)
C
A
B M M S
.050 (1.27)
Oreintation
Mark
.1497/.1574
(3.80/4.00) M M B
.010(.25)
.2284/.2440
(5.80/6.20)
.0532/.0688
(1.35/1.75)
.004
(0.10)
.0075/.0098
PI N 8
PIN 1
. 013 /. 020 (8
PL)
(.33/.51)
.0040/.0098
(.10/.25)
.1890/.1968
(4.80/5.00)
1. Dimensi ons are in inches/mm.
AT-113
3 Volt Voltage Variable Absorptive Attenuator
40 dB, 0.5 - 2.0 GHz
1
Nort h Am erica: Tel. (800) 366-2266, Fax (800) 618-8883
Asia/Pacific: Tel.+81-44-844-8296, Fax +81-44-844-8298
Europe: Tel. +44 (1344) 86 9 595, Fax+44 (134 4) 30 0 020
Specifications subject to change without notice.
Visit ww w. macom.com for ad ditional data shee ts an d pr o d uct inf or m ati o n.
V 3.0
-3
-2
-1
0
1
2
3
00.40.81.21.622.42.8
CONTROL VOLTAGE (VOLTS)
ATTENUATION DELTA (dB)
- 40 °C
+ 85°C
Typical Performance Curves
Attenuation vs. Temperature, Normalized to
+25°C, f = 900 MHz
Functional Schematic1, 2, 3
Parameter Absolute Maximum
Maximum Input Power +21 dBm
Supply Voltage VCC -1V, +8V
Control Voltage VC -1V, VCC +0.5V
Operating Temperature -40°C to +85°C
Storage Temperature -65°C to +150°C
Absolute Maximum Ratings1
1. Exceeding any one or a combination of these limits may cause
permanent damage.
1. VCC = +3 VDC @ 50 µA max.
2. VC = 0 VDC to +3 VDC @ 50 µA max.
3. External DC blocki ng capac it ors are requi red on al l RF ports.
4. 39pF used for data measurements.
8765
13
24
GND RF GND Vc
GND GND RF Vcc
-45
-40
-35
-30
-25
-20
-15
-10
-5
0
00.40.81.21.622.42.8
CONTROL VOLTAG E (VOLTS)
ATTENUATION (dB)
2.4 GHz
1.8 GHz
0.9 GHz
Attenuation vs. Control Voltage @ +25°C
-45
-40
-35
-30
-25
-20
-15
-10
-5
0
0.4 0.9 1.4 2.0 2.5 3.0
FREQUENCY (GHz)
ATTENUATION (dB)
Attenuation vs. Frequency @ 0V, +25°C
-3.5
-3
-2.5
-2
-1.5
-1
-0.5
0
0.4 0.9 1.4 2.0 2.5 3.0
FREQUENCY (GH z)
LOSS (dB)
Insertion Loss vs. Frequency @ +25°C
3 Volt Voltage Var iable Absorptive Attenua tor, 40 dB, 0.5 - 2.0 GHz AT-113
2
Nort h Am erica: Tel. (800) 366-2266, Fax (800) 618-8883
Asia/Pacific: Tel.+81-44-844-8296, Fax +81-44-844-8298
Europe: Tel. +44 (1344) 86 9 595, Fax+44 (134 4) 30 0 020
Specifications subject to change without notice.
Visit ww w. macom.com for ad ditional data shee ts an d pr o d uct inf or m ati o n.
V 3.0
0
5
10
15
20
25
30
35
32.62.21.81.410.60.2
CONTROL VOLTAGE (volts)
IP3 (dBm)
900 MHz
400 MHz
-5
0
5
10
15
20
25
00.40.81.21.622.42.8
CONTROL VOLTAGE (volts)
COMPRESSION POINT (dBm)
400 MHz
900 MHz
-30
-25
-20
-15
-10
-5
0
00.40.81.21.622.42.8
FREQUENCY (GHz)
RETURN LOSS (dB)
S11
S22
Typical Performance Curves (Cont’d)
Return Loss vs. Control Voltage @ +25°C,
f = 900 MHz 1 dB Compression vs. Control Voltage
@ +25°C, f = 900 MHz
IP3 vs. Control Voltage
3 Volt Voltage Var iable Absorp tive Attenua tor, 40 dB, 0.5 - 2.0 GHz AT-113
3
