AT-283-PIN - MACOM - Datasheet.Directory

Digital Attenuator

15.5 dB, 5-Bit, TTL Driver, DC-2.0 GHz

Rev. V7

AT-283-PIN

1

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1

Features

 Attenuation: 0.5 dB Steps to 15.5 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 Ω Nominal Impedance

 Lead-Free CR-12 Package

 260°C Reflow Compatible

 RoHS* Compliant

Description

M/A-COM’s AT-283-PIN is a GaAs FET 5-bit digital

attenuator with a 0.5 dB minimum step size and 15.5

dB total attenuation. This attenuator and integral

TTL driver is in a hermetically sealed ceramic 16

lead surface mount package. The AT-283-PIN is

ideally suited for use where accuracy, fast switching,

very low power consumption and low intermodula-

tion products are required. Typical applications in-

clude dynamic range setting in precision receiver

circuits and other gain/leveling control circuits. Envi-

ronmental screening is available. Contact the fac-

tory for information.

Ordering Information

Part Number Package

AT-283-PIN Bulk Packaging

MAAD-007229-0001TR 1000 piece reel

MAAD-007229-0001TB Sample Test Board

Note: Reference Application Note M513 for reel size

information.

Functional Schematic

Pin Configuration

Pin No. Function Pin No. Function

1 RF1 9 C5

2 GND 10 +5V

3 GND 11 -5V

4 GND 12 C4

5 GND 13 C3

6 GND 14 C2

7 GND 15 C1

8 RF2 16 GND

* Restrictions on Hazardous Substances, European Union Directive 2002/95/EC.

The metal bottom of the case must be connected to RF and DC

ground.

Digital Attenuator

15.5 dB, 5-Bit, TTL Driver, DC-2.0 GHz

Rev. V7

AT-283-PIN

2

M/A-COM Technology Solutions Inc. (MACOM) and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice.

Visit www.macom.com for additional data sheets and product information.

For further information and support please visit:

https://www.macom.com/support

2

Electrical Specifications: TA = 25°C1

Parameter Test Conditions Units Min Typ Max

Reference

Insertion Loss

DC-0.5 GHz

DC-1.0 GHz

DC-2.0 GHz

dB

—

2.2

2.5

2.9

Attenuation Accuracy 2 Any Single Bit DC-2.0 GHz

Any Combination of Bits DC-2.0 GHz

± (0.25 +3% of attenuation setting in dB) dB

or ± 0.4 dB, whichever is greater

VSWR DC-1.0 GHz

DC-2.0 GHz

—

1.6:1

1.7:1

Trise, Tfall

Ton, Toff

Transients

10% to 90%

50% Control to 90/10% RF

In-band (peak—peak)

nS

mV

—

10

27

22

—

1 dB Compression 3 Input Power 0.05 GHz

Input Power 0.5-2.0 GHz

dBm

—

+20

+28

—

Input IP3 3 For two-tone input power 0.05 GHz

up to +5 dBm 0.5-2.0 GHz

dBm

—

+40

+47

—

Input IP2 3 For two-tone input power 0.05 GHz

up to +5 dBm 0.5-2.0 GHz

dBm

—

+53

+68

—

VCC

VEE

—

V

4.5

-8.0

5.0

—

5.5

-5.0

ICC VCC = 4.5 to 5.5V

Vctl = 0 to 0.8V, or VCC - 2.1V to VCC

mA — — 5.0

IEE VEE = -5.0 to –8.0V mA — — 1.0

Vctl

Logic 0 (TTL)

Logic 1 (TTL)

V

0.0

2.0

—

0.8

5.0

Input Leakage Current (Low)

Input Leakage Current (High)

0 to 0.8V

2.0 to 5.0V

µA

—

1.0

1. All specifications apply when operated with bias voltages of +5.0V for VCC and –5.0V to -8.0V for VEE, and 50 Ω impedance at all ports

unless otherwise specified.

2. This attenuator is guaranteed monotonic.

3. VEE = -5.0V for the typical numbers given.

Digital Attenuator

15.5 dB, 5-Bit, TTL Driver, DC-2.0 GHz

Rev. V7

AT-283-PIN

3

M/A-COM Technology Solutions Inc. (MACOM) and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice.

Visit www.macom.com for additional data sheets and product information.

For further information and support please visit:

https://www.macom.com/support

3

Recommended PCB Configuration

Absolute Maximum Ratings 4,5

Parameter Absolute Maximum

Maximum Input Power

0.05 GHz

0.5-2.0 GHz

+27 dBm

+34 dBm

VCC -0.5V ≤ VCC ≤ +7.0V

VEE -8.5V ≤ VEE ≤ +0.5V

VCC - VEE -0.5V ≤ VCC - VEE ≤ 14.5V

Vin6 -0.5V ≤ Vin ≤ VCC + 0.5V

Operating Temperature -55°C to +125°C

Storage Temperature -65°C to +150°C

4. Exceeding any one or combination of these limits may cause

permanent damage to this device.

5. M/A-COM does not recommend sustained operation near

these survivability limits.

6. Standard CMOS TTL interface, latch-up will occur if logic

signal is applied prior to power supply.

Handling Procedures

Please observe the following precautions to avoid

damage:

Static Sensitivity

Gallium Arsenide Integrated Circuits are sensitive

to electrostatic discharge (ESD) and can be

damaged by static electricity. Proper ESD control

techniques should be used when handling these

devices.

Truth Table (Digital Attenuator)

Control Inputs

C1 C2 C3 C4 C5 Attenuation

0 0 0 0 0 Reference

1 0 0 0 0 0.5 dB

0 1 0 0 0 1 dB

0 0 1 0 0 2 dB

0 0 0 1 0 4 dB

0 0 0 0 1 8 dB

1 1 1 1 1 15.5 dB

Attenuation Accuracy vs. Frequency 0.5, 1, 2 dB Bits

Typical Performance Curves

Reference Insertion Loss vs. Frequency @ Temperature

0.0

1.0

2.0

3.0

4.0

5.0

0 500 1000 1500 2000

Fre quency (MHz)

Insertion Loss (dB)

+25°C

-55 °C

+85°C

-0 .5

-0 .3

0.0

0.3

0.5

0 500 1000 1500 2000

Fre quency (MHz)

Deviation from Nom. Atten. (dB)

0 = TTL Low; 1 = TTL High

Digital Attenuator

15.5 dB, 5-Bit, TTL Driver, DC-2.0 GHz

Rev. V7

AT-283-PIN

4

M/A-COM Technology Solutions Inc. (MACOM) and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice.

Visit www.macom.com for additional data sheets and product information.

For further information and support please visit:

https://www.macom.com/support

4

VSWR vs. Frequency Reference Loss, 0.5, 1, 2 dB Bits

VSWR vs. Frequency 4, 8 dB Bits and Full Attenuation

Typical Performance Curves

Attenuation Accuracy vs. Frequency 4, 8 dB Bits and

Full Attenuation

-0 .5

0.0

0.5

1.0

0 500 1000 1500 2000

Fre quency (MHz)

Deviation from Nom. Atten. (dB)

F ull A t t en.

1.0

1.2

1.4

1.6

1.8

2.0

0 50 0 10 00 1500 2000

Fre quency (MHz)

VSWR

1.0

1.2

1.4

1.6

1.8

2.0

0 50 0 10 00 1500 2000

Fre quency (MHz)

VSWR

Lead-Free, CR-12 Ceramic Package†

† Reference Application Note M538 for lead-free solder reflow

recommendations.

Digital Attenuator

15.5 dB, 5-Bit, TTL Driver, DC-2.0 GHz

Rev. V7

AT-283-PIN

5

M/A-COM Technology Solutions Inc. (MACOM) and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice.

Visit www.macom.com for additional data sheets and product information.

For further information and support please visit:

https://www.macom.com/support

5

Information in this document is provided in connection with M/A-COM Technology Solutions Inc ("MACOM")

products. These materials are provided by MACOM as a service to its customers and may be used for

informational purposes only. Except as provided in MACOM's Terms and Conditions of Sale for such products or

in any separate agreement related to this document, MACOM assumes no liability whatsoever. MACOM

assumes no responsibility for errors or omissions in these materials. MACOM may make changes to

specifications and product descriptions at any time, without notice. MACOM makes no commitment to update

the information and shall have no responsibility whatsoever for conflicts or incompatibilities arising from future

changes to its specifications and product descriptions. No license, express or implied, by estoppels or otherwise,

to any intellectual property rights is granted by this document.

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WHICH MAY RESULT FROM THE USE OF THESE MATERIALS.

MACOM products are not intended for use in medical, lifesaving or life sustaining applications. MACOM

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AT-283-PIN