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9

HMC173MS8

GaAs MMIC VOLTAGE-VARIABLE

ATTENUATOR, 0.8 - 2.0 GHz

v01.0801

General Description

Features

Functional Diagram

Single Positive Voltage Control: 0 to +3V

High Attenuation Range: >50 dB @ 0.9 GHz

High P1dB Compression Point: +16 dBm

Ultra Small Package: MSOP

+25° C, Vdd = +4.0 Vdc, 50 Ohm System

Typical Applications

The HMC173MS8 is an absorptive voltage vari-

able attenuator in an 8-lead MSOP package. The

device operates with a positive supply voltage and a

positive control voltage. Unique features include a

high dynamic attenuation range and excellent power

handling performance through all attenuation states.

The HMC173MS8 is ideal for operation in wireless

applications between 0.8 GHz and 1.6 GHz. 1.7 to

2.0 GHz operation is possible, with a reduced maxi-

mum attenuation of 30 dB and increased VSWR.

The HMC173MS8 can be used with an external

driver circuit for improved linearity of attenuation.

The HMC173MS8 is ideal for 0.8 - 2.0 GHz

Applications:

• Base Station Infrastructure

• Portable Wireless

Parameter

Min.

Typ.

Max.

Units

Insertion Loss (Min. Atten.)

(VCTL = 0.0 Vdc)

0.8 - 1.0 GHz

1.0 - 1.6 GHz

1.6 - 2.0 GHz

1.8

2.6

3.2

2.3

3.1

3.7

dB

dB

dB

Attenuation Range

(VCTL = 0 to +3 V)

0.8 - 1.0 GHz

1.0 - 1.6 GHz

1.6 - 2.0 GHz

45

27

25

52

32

30

dB

dB

dB

Flatness

(Peak to Peak)

0.8 - 1.0 GHz

1.0 - 1.6 GHz

±0.15

±0.25

dB

dB

Return Loss

(VCTL = 0 to +3 V)

0.8 - 1.0 GHz

1.0 - 1.6 GHz

1.6 - 2.0 GHz

6

5

5

12

8

7

dB

dB

dB

Input Power for 0.1 dB Compression

(.825 GHz)

Min Atten.

Atten. >2.0

19

9

dBm

dBm

Input Power for 1.0 dB Compression

(.825 GHz)

Min Atten.

Atten. >2.0

21

10

25

16

dBm

dBm

Input Third Order Intercept

.825 GHz, Two-tone Input Power = +5.0 dBm Each Tone

Min Atten.

Atten. >2.0

30

15

37

21

dBm

dBm

Switching Characteristics

tRISE, tFALL (10/90% RF)

tON, tOFF (50% CTL to 10/90% RF)

0.8 - 2.0 GHz

1.0

1.2

μS

μS