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0.5 dB LSB GaAs MMIC 6-BIT

DIGITAL ATTENUATOR, DC - 6 GHz

v02.0807

Absolute Maximum Ratings

27 dBm (T = +85 °C)

Digital Inputs (Reset, Shift Clock,

Latch Enable & Serial Input)

-1.5V to (Vdd +1.5V) Vdc

Bias Voltage (Vdd)

5.6 Vdc

Channel Temperature

150 °C

Continuous Pdiss (T = 85 °C)

0.635 W

Thermal Resistance

102 °C/W

Storage Temperature

-65 to +150 °C

Operating Temperature

-40 to +85 °C

[1] At max gain settling

ELECTROSTATIC SENSITIVE DEVICE

OBSERVE HANDLING PRECAUTIONS

Bias Voltage

Vdd (Vdc)

Idd (Typ.) (mA)

31.8

52.0

Control Voltage Input

Attenuation State

D5

D4

D3

D2

D1

D0

High

High

High

High

High

High

Reference

I.L.

High

High

High

High

High

Low

0.5 dB

High

High

High

High

Low

High

1 dB

High

High

High

Low

High

High

2 dB

High

High

Low

High

High

High

4 dB

High

Low

High

High

High

High

8 dB

Low

High

High

High

High

High

16 dB

Low

Low

Low

Low

Low

Low

31.5 dB

Any combination of the above states will provide an attenuation

approximately equal to the sum of the bits selected.

Truth Table

Parallel PUP Truth Table

P/S

LE

PUP2

PUP1

Attenuation State

0000

31.5 dB

0010

24 dB

0001

16 dB

0011

8 dB

0

1

X

X

0.5 to 31.5 dB

Note: Power-Up with LE= 1 provides normal parallel operation

with D0 - D5, and PUP1 and PUP2 are not active.

Power-Up States

Using the Parallel PUP truth table the attenuator can

be turned on at a specific attenuation state. By using

the PUP1 and PUP2 line four different attenuation

states can be selected. It can also be used in the

Direct Parallel Mode using the Control Voltage Inputs

to select attenuation values.

TTL/CMOS Control Voltage

State

Vdd= +3V or +5V

Low

0 to 0.8V

High

2.0V to Vdd