AT-233-PIN - Tyco Electronics - Datasheet.Directory

Digital Attenuator

30.0 dB, 4-Bit, TTL Driver, DC-2.0 GHz

AT-233-PIN

M/A-COM Inc. and its affiliates reserve the right to make changes to the

product(s) or information contained herein without notice. M/A-COM makes

no warranty, representation or guarantee regarding the suitability of its

products for any particular purpose, nor does M/A-COM assume any liability

whatsoever arising out of the use or application of any product(s) or

information.

• North America Tel: 800.366.2266 / Fax: 978.366.2266

• Europe Tel: 44.1908.574.200 / Fax: 44.1908.574.300

• Asia/Pacific Tel: 81.44.844.8296 / Fax: 81.44.844.8298

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

RoHS

Compliant

Features

• 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

• Lead-Free CR-12 Package

• 260°C Reflow Compatible

Description

M/A-COM’s AT-233-PIN 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-PIN 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. Environ-

mental screening is available. Contact the factory

for information.

Ordering Information

Part Number Package

AT-233-PIN Bulk Packaging

MAAD-007228-0001TR 1000 piece reel

MAAD-007228-0001TB Sample Test Board

Note: Reference Application Note M513 for reel size

information.

Note: Die quantity varies.

Functional Schematic

Pin Configuration

Pin No. Function Pin No. Function

1 RF1 9 NC

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

30.0 dB, 4-Bit, TTL Driver, DC-2.0 GHz

AT-233-PIN

M/A-COM Inc. and its affiliates reserve the right to make changes to the

product(s) or information contained herein without notice. M/A-COM makes

no warranty, representation or guarantee regarding the suitability of its

products for any particular purpose, nor does M/A-COM assume any liability

whatsoever arising out of the use or application of any product(s) or

information.

• North America Tel: 800.366.2266 / Fax: 978.366.2266

• Europe Tel: 44.1908.574.200 / Fax: 44.1908.574.300

• Asia/Pacific Tel: 81.44.844.8296 / Fax: 81.44.844.8298

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

RoHS

Compliant

Electrical Specifications: T

= 25°C

Parameter Test Conditions Frequency Units Min Typ Max

Reference Insertion Loss — DC - 0.5 GHz

DC - 1.0 GHz

DC - 2.0 GHz

—

2.3

2.65

2.8

Attenuation Accuracy

Any Single Bit

Any Combination of Bits

DC - 1.0 GHz

DC - 2.0 GHz

DC - 1.0 GHz

DC - 2.0 GHz

VSWR — DC - 2.0 GHz Ratio — — 1.7:1

Trise, Tfall 10% to 90% — ns — 10 —

Ton, Toff 50% Control to 90/10% RF — ns — 30 —

Transients In-Band (peak-peak) — mV — 35 —

1 dB Compression

Input Power 0.05 GHz

0.5 - 2.0 GHz

dBm

—

+20

+28

—

Input IP3

For two tone input power

Up to +5 dBm

0.05 GHz

0.5 - 2.0 GHz

dBm

—

+40

+50

—

Input IP2

For two-tone input power

Up to +5 dBm

0.05 GHz

0.5 - 2.0 GHz

dBm

—

+45

+68

—

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

or ± 0.45 dB, whichever is greater

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

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

or ± 0.45 dB, whichever is greater

— — V 4.5 5.0 5.5

— — V -8.0 — -5.0

= 4.5 to 5.5 V

Vctl = 0 to 0.8V, or V

–

2.1V to V

— mA — — 4.0

= -5.0 to –8.0V — mA — — 1.0

Vctl Logic 0 (TTL)

Logic 1 (TTL)

—

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 +5V for V

and –5.0V to –8.0V for V

, and 50 Ohm impedance at all ports

unless otherwise specified.

2. This attenuator is guaranteed monotonic.

3. V

= -5V for the typical numbers given.

Digital Attenuator

30.0 dB, 4-Bit, TTL Driver, DC-2.0 GHz

AT-233-PIN

M/A-COM Inc. and its affiliates reserve the right to make changes to the

product(s) or information contained herein without notice. M/A-COM makes

no warranty, representation or guarantee regarding the suitability of its

products for any particular purpose, nor does M/A-COM assume any liability

whatsoever arising out of the use or application of any product(s) or

information.

• North America Tel: 800.366.2266 / Fax: 978.366.2266

• Europe Tel: 44.1908.574.200 / Fax: 44.1908.574.300

• Asia/Pacific Tel: 81.44.844.8296 / Fax: 81.44.844.8298

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

RoHS

Compliant

Recommended PCB Configuration

Absolute Maximum Ratings

4,5

Parameter Absolute Maximum

Max Input Power

0.5 GHz

0.5 - 2.0 GHz

+27 dBm

+34 dBm

Supply Voltages

+5.5V

-8.5V

Control Voltage

-0.5V to V

+ 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)

C4 C3 C2 C1 Attenuation

0 0 0 0 Reference

0 0 0 1 2 dB

0 0 1 0 4 dB

0 1 0 0 8 dB

1 0 0 0 16 dB

1 1 1 1 30 dB

Control Inputs

0 = TTL Low; 1 = TTL High

VSWR vs. Frequency

Typical Performance Curves

Ref. Insertion Loss vs. Frequency

0.0

1.0

2.0

3.0

4.0

5.0

0.0 0.5 1.0 1.5 2.0

Frequency (GHz)

Insertion Loss (dB)

+ 8 5 °C + 2 5

°C

- 5 5 °C

1.00

1.20

1.40

1.60

1.80

2.00

0.0 0.5 1.0 1.5 2.0

Frequency (GHz)

VSWR

2 dB 4 dB 8 dB 16 dB Re f Loss S ta te

Digital Attenuator

30.0 dB, 4-Bit, TTL Driver, DC-2.0 GHz

AT-233-PIN

M/A-COM Inc. and its affiliates reserve the right to make changes to the

product(s) or information contained herein without notice. M/A-COM makes

no warranty, representation or guarantee regarding the suitability of its

products for any particular purpose, nor does M/A-COM assume any liability

whatsoever arising out of the use or application of any product(s) or

information.

• North America Tel: 800.366.2266 / Fax: 978.366.2266

• Europe Tel: 44.1908.574.200 / Fax: 44.1908.574.300

• Asia/Pacific Tel: 81.44.844.8296 / Fax: 81.44.844.8298

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

RoHS

Compliant

Typical Performance Curves

Attenuation Accuracy vs. Frequency

- 2.0

- 1.5

- 1.0

- 0.5

0.0

0.5

1.0

0.0 0.5 1.0 1.5 2.0

Frequency (GHz)

Dev ia tio n from No m ina l

Attenuation (dB )

2 d B4 d B8 dB16 dBFull A tte n

Lead-Free

CR-12 Ceramic Package

†

Reference Application Note M538 for lead-free solder reflow

recommendations.