AT-119SMB [TE]
2.25 Volt Voltage Variable Absorptive Attenuator - 40 dB, 1.8.2.5 GHz; 2.25伏电压可变衰减器吸收 - 40分贝， 1.8.2.5 GHz的
| 型号： | AT-119SMB |
| 厂家： | 
TE CONNECTIVITY |
| 描述： | 2.25 Volt Voltage Variable Absorptive Attenuator - 40 dB, 1.8.2.5 GHz |
| 文件： | 总4页 (文件大小：138K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
2.25 Volt Voltage Variable Absorptive
Attenuator - 40 dB, 1.8—2.5 GHz
Features
Functional Schematic
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
VCC
5
VCTL
4
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
2
GND
3
RF
1
RF
100 pF
100 pF
Applications
The AT-119 is ideally suited for applications that require
fine tuning, linear attenuation with voltage, and very low
power consumption.
1. VCC = +3.3 VDC @ 50 µA max.
2. VCTL = 0 VDC to +3.3 VDC @ 50 µA max.
3. External DC blocking capacitors are required on all RF
ports.
Absolute Maximum Ratings1
Typical applications for the AT-119 include automatic gain
control circuits in satellite radio receivers and other wireless
receivers.
@ TA = +25 °C (unless otherwise specified)
Parameter
Maximum Input Power
Supply Voltage VCC
ControlVoltage VCTL
Operating Temperature
Storage Temperature
Absolute Maximum
+21 dBm
-1 V, + 8 V
-1 V, VCC +0.5 V
-40°C to +85°C
-65°C to +150°C
1. Exceeding any one or a combination of these limits may
cause permanent damage.
1
Electrical Specifications @ TA = +25 °C, Frequency = 2.4 GHz, VCC = 3.3 VDC
Parameters
Minimum Insertions Loss
Maximum Attenuation
Attenuation Slope
Return Loss
Test Conditions
Units
Min
Typ
Max
VCTL = 2.25 VDC
dB
3.0
3.2
VCTL = 0.5 VDC
dB
37
24
0.75 VDC < VCTL < 1.75 VDC
0.6 VDC < VCTL < 1.75 VDC
dB/V
dB
>12
>10
Input Power for 1 dB Change in Attenua-
tion
0 VDC < VCTL < 3.0 VDC
dBm
Input 3rd Order Intercept Point
0 VDC < VCTL < 3.0 VDC
50% VCTL to 10% / 90% RF
VCTL = 3 VDC, In-Band
dBm
nSec
mV
>20
180
10
Switching Speed
Transients
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.
2.25 Volt Voltage Variable Absorptive Attenuator, 40 dB, 1.8 - 2.5 GHz
Typical Performance Curves
AT-119
Attenuation vs. Frequency @ 0.0 VDC
for Control Voltage
Attenuation vs. Control Voltage, +25 °C
0
5
0.0
5.0
10
15
20
25
30
35
40
45
50
55
60
10.0
15.0
20.0
25.0
30.0
35.0
40.0
45.0
50.0
55.0
60.0
1.8 GHz
+25 deg C
2.4 GHz
+85 deg C
2.1 GHz
-40 deg C
3.0
2.5
2.0
1.5
1.0
0.5
0.0
500
1000
1500
2000
2500
3000
CONTROL VOLTAGE (Volts)
FREQUENCY (MHz)
Insertion Loss vs. Frequency @ 2.25
VDC for Control Voltage
Return Loss vs. Control Voltage
@ +25 °C
0
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
-5
-10
-15
-20
-25
-30
2.1 GHz
2.4 GHz
+25 deg C
+85 deg C
-40 deg C
1.8 GHz
500
1000
1500
2000
2500
3000
3.0
2.5
2.0
1.5
1.0
0.5
0.0
FREQUENCY (MHz)
CONTROL VOLTAGE (VDC)
Insertion Loss Delta Normalized
to +25 °C
Insertion Loss Delta Normalized
to +25 °C
6
4
6
-40oC
+85oC
4
1.8 GHz
2.4 GHz
1.8 GHz
2
2
0
2.4 GHz
0
-2
-4
-6
-2
-4
-6
2.1 GHz
2.1 GHz
3.0
2.5
2.0
1.5
1.0
0.5
0.0
3.0
2.5
2.0
1.5
1.0
0.5
0.0
CONTROL VOLTAGE (VDC
)
CONTROL VOLTAGE (VDC
)
Specifications subject to change without notice.
ꢀ North America: Tel. (800) 366-2266
ꢀ Asia/Pacific: Tel.+81-44-844-8296, Fax +81-44-844-8298
ꢀ Europe: Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020
Visit www.macom.com for additional data sheets and product information.
2
2.25 Volt Voltage Variable Absorptive Attenuator, 40 dB, 1.8 - 2.5 GHz
AT-119
Typical Performance Curves (Cont’d)
Input Power for 1 dB Change in
Attenuation: +25 °C
Input IP3 vs. Control Voltage: +25 °C
20
15
10
5
40
35
30
25
20
15
10
5
Input Power = 0 dBm
2.4
1.8 GHz
1.8 GHz
2.4 GHz
0
0
3.0
2.5
2.0
1.5
1.0
0.5
0.0
3
2.5
2
1.5
1
0.5
0
CONTROL VOLTAGE (VDC
)
CONTROL VOLTAGE (VDC)
Typical Device Variation,
Attenuation vs. VCTL
0
5
Freq = 2.4 GHz
10
15
20
25
30
35
40
45
50
55
60
3.0
2.5
2.0
1.5
1.0
0.5
0.0
VCTL (VDC
)
Specifications subject to change without notice.
ꢀ North America: Tel. (800) 366-2266
ꢀ Asia/Pacific: Tel.+81-44-844-8296, Fax +81-44-844-8298
ꢀ Europe: Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020
Visit www.macom.com for additional data sheets and product information.
3
2.25 Volt Voltage Variable Absorptive Attenuator, 40 dB, 1.8 - 2.5 GHz
AT-119
SOT-25 1
SOT-25 1 Dimensions
DIM
Measurement (mm)
D
PIN 5
MIN
NOM
MAX
A2
e1
1.45
0.15
1.30
0.50
0.22
A
A1
A2
b
0.90
0.30
0.08
1.15
E1
WZ X Y
E
c
L
2.90 basic
0.95 basic
1.90 basic
2.80 basic
1.60 basic
0.60
D
PIN 5
e
e
c
°
e1
E
A1
A
E1
L
b
0.30
0°
0.45
8°
4°
°
1. See JEDEC MO-178 VAR AA for additional dimensions and
tolerances
Ordering Information
Part Number
Package
AT-119TR
Tape and Reel1
AT-119TR-3000
AT-119SMB
3000 Piece Tape and Reel
Sample Board
1. If specific reel size is required, consult factory for part
number assignment.
Specifications subject to change without notice.
ꢀ North America: Tel. (800) 366-2266
ꢀ Asia/Pacific: Tel.+81-44-844-8296, Fax +81-44-844-8298
ꢀ Europe: Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020
Visit www.macom.com for additional data sheets and product information.
4
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