Digital Attenuator

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

Rev. V10

AT20-0106

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Features

 Attenuation: 1 dB steps to 50 dB

 Temperature Stability: ± 0.18 dB from –40°C to

+85°C Typical

 Low DC Power Consumption

 Surface Mount Package

 Integral TTL Driver

 High Intercept Point

 Low Cost/High Performance

 50 Ohm Nominal Impedance

 Lead-Free CR-13 Package

 260°C Reflow Compatible

 RoHS* Compliant

Description

M/A-COM’s AT20-0106 is a GaAs FET 6-bit digital

attenuator with a 1 dB minimum step size and 50 dB

total attenuation. This attenuator and integral TTL

driver is in a ceramic 24-lead surface mount pack-

age. The AT20-0106 is ideally suited for use where

accuracy, fast switching, low power consumption

and low intermodulation products are required. Typi-

cal

applications

include

dynamic

range

setting in precision receiver circuits and other gain/

leveling control circuits.

Available with enhanced

performance as fully hermetic version. Environmen-

tally screenable as P/N AT-106-PIN.

Ordering Information

Part Number

Package

AT20-0106-PIN

Bulk Packaging

AT20-0106-TR

1000 piece reel

AT20-0106-TB

Sample Test Board

Note: Reference Application Note M513 for reel size

information.

Functional Schematic

Pin Configuration

Pin No.

Function

Pin No.

Function

1

GND

13

RF2

2

GND

14

GND

3

GND

15

GND

4

C32

16

GND

5

C16

17

GND

6

Vee (-5V to -8V)

18

GND

7

Vcc (+5V)

19

GND

8

C8

20

GND

9

C4

21

GND

10

C2

22

GND

11

C1

23

GND

12

GND

24

RF1

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

ground.

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

PIN 1 GND

GND

GND

C32

C16

Vee (-5V to -8V)

Vcc (+5V)

C8

GND

GND

GND

GND

GND

GND

RF1 PIN 24

32 dB

16 dB

8 dB

4 dB

2 dB

1 dB

GND

GND

GND Orientation Mark

GND

RF2 PIN 13

C4

C2

C1

PIN 12 GND