2

HMC1019

ALP4E

v00.1115

0.5 dB LSB GaAs MMIC 5-BIT DIGITAL

ATTENUATOR, 0.1 - 30 GHz

Serial Mode Truth Table

Control Voltage Input

Attenuation

State

RF1 - RF2

P4

8 dB

P3

4 dB

P2

2 dB

P1

1 dB

P0

0.5 dB

High

High

High

High

High

Reference I.L.

High

High

High

High

Low

0.5 dB

High

High

High

Low

High

1 dB

High

High

Low

High

High

2 dB

High

Low

High

High

High

4 dB

Low

High

High

High

High

8 dB

Low

Low

Low

Low

Low

15.5 dB

Any combination of the above states will provide an attenuation

approximately equal to the sum of the bits selected.

Parameter

Typ.

Min. serial period, t

SCK

100 ns

Control set-up time, t

Cs

20 ns

Control hold-time, t

CH

20 ns

LE setup-time, t

ln

10 ns

Min. LE pulse width, t

LEW

10 ns

Min LE pulse spacing, t

les

630 ns

Serial clock hold-time from LE, t

CKN

10 ns

Hold Time, t

PH.

0 ns

Latch Enable Minimum Width, t

len

10 ns

Setup Time, t

Ps

2 ns

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Phone: 781-329-4700 • Order online at www.analog.com

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PUP Truth Table

PuP

Attenuation State

High

Reference I.L.

Low

15.5 dB

Note: The logic state of ASM1-ASM2 determines the

power-up state of the part per truth table for the asyn-

chronous mode when LE is high at power-up.

Asynchronous Mode Truth Table

AsM1

AsM2

Attenuation State RF1-RF2

High

High

Reference I.L.

High

Low

1.5 dB

Low

High

14 dB

Low

Low

15.5 dB

Bias Voltages & Currents

Vdd

+5V @ 0.2 mA

Vdd1

+5V @ 4.5 mA

Vss

-5V @ 5 mA

Control Voltage

State

Bias Condition

Low

0 to 0.8V @ 1 µA

High

2 to 5V @ 1 µA