Digital Attenuator

50.0 dB, 6-Bit, TTL Driver, DC-2.0 GHz

AT20-0106

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.

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

V7

3

RoHS

Compliant

Recommended PCB Configuration

Absolute Maximum Ratings

3,4

Parameter

Absolute Maximum

Max Input Power

0.5 GHz

0.5 - 2.0 GHz

+27 dBm

+34 dBm

Supply Voltages

Vcc

Vee

+5.5V

-8.5V

Control Voltage

5

-0.5V to Vcc +0.5V

Operating Temperature

-40°C to +125°C

Storage Temperature

-65°C to +150°C

3.

Exceeding any one or combination of these limits may cause

permanent damage to this device.

4.

M/A-COM does not recommend sustained operation near

these survivability limits.

5.

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)

C6

C5

C4

C3

C2

C1

Attenuation

0

0

0

0

0

0

Reference

0

0

0

0

0

1

1 dB

0

0

0

0

1

0

2 dB

0

0

0

1

0

0

4 dB

0

0

1

0

0

0

8 dB

0

1

0

0

0

0

16 dB

1

0

0

0

0

0

32 dB

1

1

1

1

1

1

63 dB

Control Inputs

Attenuation Accuracy vs. Frequency

Typical Performance Curves

Insertion Loss vs. Frequency

0

1

2

3

4

5

0.0

0.5

1.0

1.5

2.0

Frequency (GHz)

+ 8 5 °C

+ 2 5 °C - 5 5 °C

- 0.60

- 0.40

- 0.20

0.00

0.20

0.40

0.60

0.0

0.5

1.0

1.5

2.0

Frequency (GHz)

1 d B

2 dB

4 dB

8 d B

0 = TTL Low; 1 = TTL High