Datasheet > AT-119SMB

AT-119SMB

更新时间： 2024-11-20 22:26:19

品牌	Logo	应用领域
泰科 - TE		衰减器
页数	文件大小	规格书
4页	138K
描述
2.25 Volt Voltage Variable Absorptive Attenuator - 40 dB, 1.8.2.5 GHz

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AT-119SMB 数据手册

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

V_CC

V_CTL

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

GND

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. V_CC= +3.3 V_DC@ 50 µA max.

2. V_CTL= 0 V_DCto +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.

@ T_A= +25 °C (unless otherwise specified)

Parameter

Maximum Input Power

Supply Voltage V_CC

ControlVoltage V_CTL

Operating Temperature

Storage Temperature

Absolute Maximum

+21 dBm

-1 V, + 8 V

-1 V, V_CC+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.

Electrical Specifications @ T_A= +25 °C, Frequency = 2.4 GHz, V_CC= 3.3 V_DC

Parameters

Minimum Insertions Loss

Maximum Attenuation

Attenuation Slope

Return Loss

Test Conditions

Units

Min

Typ

Max

V_CTL= 2.25 V_DC

3.0

3.2

V_CTL= 0.5 V_DC

0.75 V_DC< V_CTL< 1.75 V_DC

0.6 V_DC< V_CTL< 1.75 V_DC

dB/V

>12

>10

Input Power for 1 dB Change in Attenua-

tion

0 V_DC< V_CTL< 3.0 V_DC

dBm

Input 3^rdOrder Intercept Point

0 V_DC< V_CTL< 3.0 V_DC

50% V_CTLto 10% / 90% RF

V_CTL= 3 V_DC,In-Band

dBm

nSec

>20

180

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.

12 3 4

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