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9 - 94

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9

HMC424LP3

0.5dB LSB GaAs MMIC 6-BIT DIGITAL

ATTENUATOR, DC - 13 GHz

v04.0604

Truth Table

Control Voltage

Bias Voltage & Current

-2

-1.5

-1

-0.5

0

0.5

1

1.5

2

0

1234567

89

10 11 12 13 14 15

FREQUENCY (GHz)

Worst Case Step Error

Between Successive Attenuation States

Control Voltage Input

Attenuation

State

RF1 - RF2

V1

16 dB

V2

8 dB

V3

4 dB

V4

2 dB

V5

1 dB

V6

0.5 dB

Low

Low

Low

Low

Low

Low

Reference

I.L.

Low

Low

Low

Low

Low

High

0.5 dB

Low

Low

Low

Low

High

Low

1 dB

Low

Low

Low

High

Low

Low

2 dB

Low

Low

High

Low

Low

Low

4 dB

Low

High

Low

Low

Low

Low

8 dB

High

Low

Low

Low

Low

Low

16 dB

High

High

High

High

High

High

31.5 dB

Any Combination of the above states will provide

an attenuation approximately equal to the sum of

the bits selected.

State

Bias Condition

Low

0 to -3V @ 70 µA Typ.

High

-5 to -4.2V @ 5 µA Typ.

Vee Range= -5.0 Vdc ± 10%

Vee

(VDC)

Iee (Typ.)

(mA)

Iee (Max.)

(mA)

-5.0

2

4