AT-233 Tyco Electronics, AT-233 Datasheet

AT-233

Manufacturer Part Number

AT-233

Description

Digital Attenuator

Manufacturer

Tyco Electronics

Datasheet

1.AT-233.pdf (3 pages)

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Digital Attenuator, 30 dB, 4-Bit,

TTL Driver, DC - 2 GHz

Features

Description

M/A-COM’s AT-233 is a GaAs FET 4-Bit digital

attenuator with a 2 dB minimum step size and 30 dB total

attenuation. This attenuator and integral TTL driver is in a

hermetically sealed ceramic 16-lead surface mount package.

The AT-233 is ideally suited for use where accuracy, fast

switching, very low power consumption and low

intermodulation products are required. Typical applications

include dynamic range setting in precision receiver circuits

and other gain/leveling control circuits.

screening is available. Contact the factory for information.

1. All specifications apply when operated with bias voltages of +5V or V

2. Above reference insertion loss.

3. This attenuator is guaranteed monotonic.

4. V

Electrical Specifications: T

Reference Insertion Loss

all ports unless otherwise specified.

Attenuation: 2 dB Steps to 30 dB

Temperature Stability: ± 0.18 dB from –55°C to +85°C

Typical

Low DC Power Consumption

Hermetic Surface Mount Package

Integral TTL Driver

50 Ohm Nominal Impedance

Attenuation Accuracy

1 dB Compression

= -5V for the typical numbers given.

Parameter

Trise, Tfall

Transients

Input IP3

Input IP2

Ton, Toff

VSWR

50% Control to 90/10% RF

For two tone input power

For two-tone input power

Any Combination of Bits

In-Band (peak-peak)

Test Conditions

Any Single Bit

Up to +5 dBm

10% to 90%

Input Power

Environmental

= 25°C

CR-12

DC - 0.5 GHz

DC - 1.0 GHz

DC - 2.0 GHz

DC - 1.0 GHz

DC - 2.0 GHz

DC - 1.0 GHz

DC - 2.0 GHz

0.5 - 2.0 GHz

Frequency

0.05 GHz

and –5.0V to –8.0V for V

—

± (0.20 + 3% of attenuation setting in dB) dB

± (0.25 + 4% of attenuation setting in dB) dB

± (0.2 + 3% of attenuation setting in dB) dB

Units

Ratio

dBm

or ± 0.45 dB, whichever is greater

Min

—

, and 50 Ohm impedance at

Typ

+20

+28

+40

+50

+45

+68

—

Max

1.7:1

2.65

V 3.00

2.3

2.8

—

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AT-233 Summary of contents

Page 1

... This attenuator and integral TTL driver hermetically sealed ceramic 16-lead surface mount package. The AT-233 is ideally suited for use where accuracy, fast switching, very low power consumption and low intermodulation products are required. Typical applications include dynamic range setting in precision receiver circuits and other gain/leveling control circuits ...

Page 2

... V 0.0 — V 2.0 — µA — — µA — Functional Schematic (Top View +5V - GND PIN 16 AT-233 V 3.00 Typ Max 5.0 5.5 — -5.0 — 4.0 — 1.0 — 0.8 — 5.0 — 1.0 — 1.0 RF2 GND GND GND GND GND GND RF1 PIN 1 ...

Page 3

... Visit www.macom.com for additional data sheets and product information. +25°C -55°C 1.0 1.5 2.0 Frequency (GHz 1.0 1.5 2.0 Frequency (GHz) VSWR vs. Frequency Ref Loss State 2.00 1.80 1.60 1.40 1.20 1.00 0.0 0.5 1.0 Frequency (GHz) 6 Ordering Information Part Number Package AT-233 PIN CR-12 6. Contact the factory for standard or custom screening requirements AT-233 V 3.00 1.5 2.0 3 ...

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