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PDF AT-119SMB Data sheet ( Hoja de datos )
| Número de pieza | AT-119SMB | |
| Descripción | 2.25 Volt Voltage Variable Absorptive Attenuator - 40 dB/ 1.8.2.5 GHz | |
| Fabricantes | Tyco Electronics | |
| Logotipo |  |
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2.25 Volt Voltage Variable Absorptive
Attenuator - 40 dB, 1.8—2.5 GHz
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
Functional Schematic
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
1 23
RF 100 pF GND 100 pF RF
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.
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
@ TA = +25 °C (unless otherwise specified)
Parameter
Absolute Maximum
Maximum Input Power
+21 dBm
Supply Voltage VCC
ControlVoltage VCTL
Operating Temperature
-1 V, + 8 V
-1 V, VCC +0.5 V
-40°C to +85°C
Storage Temperature
-65°C to +150°C
1. Exceeding any one or a combination of these limits may
cause permanent damage.
Electrical Specifications @ TA = +25 °C, Frequency = 2.4 GHz, VCC = 3.3 VDC1
Parameters
Test Conditions
Units
Min
Typ Max
Minimum Insertions Loss
VCTL = 2.25 VDC
dB
3.0 3.2
Maximum Attenuation
VCTL = 0.5 VDC
dB 37
Attenuation Slope
0.75 VDC < VCTL < 1.75 VDC
dB/V
24
Return Loss
Input Power for 1 dB Change in Attenua-
tion
Input 3rd Order Intercept Point
0.6 VDC < VCTL < 1.75 VDC
0 VDC < VCTL < 3.0 VDC
0 VDC < VCTL < 3.0 VDC
dB
dBm
dBm
>12
>10
>20
Switching Speed
50% VCTL to 10% / 90% RF
nSec
180
Transients
VCTL = 3 VDC, In-Band
mV
10
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.
1 page | ||
| Páginas | Total 4 Páginas | |
| PDF Descargar | [ Datasheet AT-119SMB.PDF ] | |
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