Digital Attenuator, 4 Bit, Single Control, 30 dB, 0.5 - 2.0 GHz

AT-264

M/A-COM Division of AMP Incorporated

3 North America: Tel. (800) 366-2266, Fax (800) 618-8883 3 Asia/Pacific: Tel.+85 2 2111 8088, Fax +85 2 2111 8087

3 Europe: Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020

www.macom.com

AMP and Connecting at a Higher Level are trademarks.

Specifications subject to change without notice.

V3.00

-1 .5

-1

-0 .5

0

0.5

1

1.5

0.5

1

1.5

2

2.5

3

F R E Q UE NCY (G Hz )

30 dB A T T E N

4 dB

2 dB A T TE N

8 dB A T TE N

16 dB A T T E N

-3 2

-3 0

-2 8

-2 6

-2 4

-2 2

-2 0

-1 8

-1 6

-1 4

-1 2

-1 0

-8

-6

-4

-2

0

0.5

1

1.5

2

2.5

3

F R E Q UE NCY (G Hz )

1

1.2

1.4

1.6

1.8

2

2.2

2.4

2.6

2.8

0.5

1

1.5

2

2 .5

3

F R E Q UE NCY (G Hz )

16, 30 dB A T T E N

2 dB A T TE N

IL

0

0.5

1

1.5

2

2.5

0.5

1

1.5

2

2.5

3

F R E Q UE NCY (G H z )

Typical Performance Curves

Attenuation Accuracy vs. Frequency

Functional Schematic

1, 2

Parameter

Absolute Maximum

Input Power

50 MHz

500 - 2000 MHz

+27 dBm

+34 dBm

Control Voltage

+8.5V, -0.5V

Operating Temperature

-40°C to +85°C

Storage Temperature

-65°C to +150°C

Absolute Maximum Ratings

1

1.

Exceeding any one or a combination of these limits may cause

permanent damage.

1.

Blocking Caps are required on all RF ports, 39 pF used for data

measurements.

2.

Vs = +5+0.2Vdc can be applied at RF1 or RF2 using a 10K or

greater pull-up resistor.

Insertion Loss vs. Frequency

Attenuation vs. Frequency

VSWR vs. Frequency

GND GND VC1 VC2 VC3 VC4

GND GND

RF1 GND GND GND GND GND GND RF2

PIN 16

PIN 1

16

8

4

2

Vs

VC1

VC2

VC3

VC4

Attenuation (dB)

1

1

1

1

Reference I.L.

11

1

0

2

11

0

1

4

10

1

1

8

01

1

1

16

00

0

0

30

Logic 0=0±0.2V

Logic 1 = +5v @ 30 µA max. current total.

Truth Table