North America: Tel. (800) 366-2266, Fax (800) 618-8883
Asia/Pacific: Tel.+81-44-844-8296, Fax +81-44-844-8298
Europe: Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020
Specifications subject to change without notice.
Visit www.macom.com for additional data sheets and product information.
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-8
1
Electrical Specifications: T
A
= +25C
1
=
=
=
=
Parameter
Test Conditions
Units
Min.
Typ.
Max.
Insertion Loss
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
T
rise
, T
fall
10% to 90% RF, 90% to 10% RF
S
10
T
on
, T
off
50% Control to 90% RF, Control to 10% RF
S
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 circuits.
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 Reel
1
1. If specific reel size is required, consult factory for part number
assignment.
1. All measurements at 1 GHz in a 50
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
PIN 8
PIN 1
.013/.020 (8
PL)
(.33/.51)
.0040/.0098
(.10/.25)
.1890/.1968
(4.80/5.00)
1. Dimensions are in inches/mm.
AT-113
3 Volt Voltage Variable Absorptive Attenuator
40 dB, 0.5 - 2.0 GHz
1
North America: Tel. (800) 366-2266, Fax (800) 618-8883
Asia/Pacific: Tel.+81-44-844-8296, Fax +81-44-844-8298
Europe: Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020
Specifications subject to change without notice.
Visit www.macom.com for additional data sheets and product information.
V 3.0
-3
-2
-1
0
1
2
3
0
0.4
0.8
1.2
1.6
2
2.4
2.8
C O N TR O L V O LTA G E (V O LT S)
ATTENUATI
ON DELTA (
d
B)
- 40C
+ 85C
Typical Performance Curves
Attenuation vs. Temperature, Normalized to
+25C, f = 900 MHz
Functional Schematic
1, 2, 3
Parameter
Absolute Maximum
Maximum Input Power
+21 dBm
Supply Voltage V
CC
-1V, +8V
Control Voltage V
C
-1V, V
CC
+0.5V
Operating Temperature
-40C to +85C
Storage Temperature
-65C to +150C
Absolute Maximum Ratings
1
1. Exceeding any one or a combination of these limits may cause
permanent damage.
1. V
CC
= +3 V
DC
@ 50 A max.
2. V
C
= 0 V
DC
to +3 V
DC
@ 50 A max.
3. External DC blocking capacitors are required on all RF ports.
4. 39pF used for data measurements.
8
7
6
5
1
3
2
4
G N D
R F
G N D
V c
G N D
G N D
R F
V c c
-45
-40
-35
-30
-25
-20
-15
-10
-5
0
0
0.4
0.8
1.2
1.6
2
2.4
2.8
CONTROL VOLTAGE (VOLTS)
ATTEN
U
A
TI
ON
(d
B)
2.4 GHz
1.8 GHz
0.9 GHz
Attenuation vs. Control Voltage @ +25C
-45
-40
-35
-30
-25
-20
-15
-10
-5
0
0.4
0.9
1.4
2.0
2.5
3.0
FREQUENCY (GHz)
ATTEN
U
A
TI
ON
(d
B)
Attenuation vs. Frequency @ 0V, +25C
-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 (GHz)
LO
SS (dB)
Insertion Loss vs. Frequency @ +25C
3 Volt Voltage Variable Absorptive Attenuator, 40 dB, 0.5 - 2.0 GHz
AT-113
2
North America: Tel. (800) 366-2266, Fax (800) 618-8883
Asia/Pacific: Tel.+81-44-844-8296, Fax +81-44-844-8298
Europe: Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020
Specifications subject to change without notice.
Visit www.macom.com for additional data sheets and product information.
V 3.0
0
5
10
15
20
25
30
35
3
2.6
2.2
1.8
1.4
1
0.6
0.2
CONTROL VOLTAGE (volts)
IP3 (
d
Bm
)
900 MHz
400 MHz
-5
0
5
10
15
20
25
0
0.4
0.8
1.2
1.6
2
2.4
2.8
CONTROL VOLTAGE (volts)
COMPRESSI
O
N POI
N
T (
d
Bm)
400 MHz
900 MHz
-30
-25
-20
-15
-10
-5
0
0
0.4
0.8
1.2
1.6
2
2.4
2.8
FREQ UEN CY (G Hz)
RETURN LOSS (
d
B)
S11
S22
Typical Performance Curves (Cont'd)
Return Loss vs. Control Voltage @ +25C,
f = 900 MHz
1 dB Compression vs. Control Voltage
@ +25C, f = 900 MHz
IP3 vs. Control Voltage
3 Volt Voltage Variable Absorptive Attenuator, 40 dB, 0.5 - 2.0 GHz
AT-113
3
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