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5 - 190

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0.5 dB LSB GaAs MMIC 5-BIT DIGITAL

POSITIVE CONTROL ATTENUATOR, 0.7 - 3.8 GHz

General Description

Features

Functional Diagram

The HMC603MS10 & HMC603MS10E are general

purpose broadband 5-bit positive control GaAs IC

digital attenuators in 10 lead MSOP surface mount

plastic packages. Covering 0.7 to 3.8 GHz, the inser-

tion loss is less than 2.0 dB typical. The attenuator

bit values are 0.5 (LSB), 1, 2, 4 and 8 dB for a total

attenuation of 15.5 dB. Attenuation accuracy is

excellent at ± 0.15 dB typical with an IIP3 of +50 dBm.

Five bit control voltage inputs, toggled between 0

and +3 to +5V, are used to select each attenuation

state at less than 1.0 uA each. A single Vdd bias

of +3 to +5V applied through an external 5K Ohm

resistor is required.

0.5 dB LSB Steps to 15.5 dB

Single Positive Control Per Bit

± 0.15 dB Typical Bit Error

High Input IP3: +50 dBm

MSOP10 SMT Package

Electrical Specifications,

T

Typical Applications

The HMC603MS10 / HMC603MS10E is ideal for:

• Cellular/3G Infrastructure

• ISM, MMDS

• WLAN, WiMAX, & WiBro

Parameter

Frequency (GHz)

Min.

Typical

Max.

Units

Insertion Loss

0.7 - 1.4

1.4 - 2.3

2.3 - 2.7

2.7 - 3.8

1.3

1.7

2.2

2.7

1.6

2.0

2.5

3.1

dB

dB

dB

dB

Attenuation Range

15.5

dB

Return Loss (RF1 & RF2, All Atten. States)

0.7 - 1.4

1.4 - 2.3

2.3 - 2.7

2.7 - 3.8

25

18

13

12

dB

dB

dB

dB

Attenuation Accuracy: (Referenced to Insertion Loss)

All States

0.7 - 2.2

2.2 - 3.8

± (0.2 + 2% of Atten. Setting) Max.

± (0.3 + 3% of Atten. Setting) Max.

dB

dB

Input Power for 0.1 dB Compression

Vdd = 5V

Vdd = 3V

0.7 - 3.8

29

28

dBm

dBm

Input Third Order Intercept Point

(Two-tone Input Power = 0 dBm Each Tone)

REF - 2 dB States

2.5 - 15.5 dB States

0.7 - 3.8

53

48

dBm

dBm

Switching Characteristics

tRISE, tFALL (10/90% RF)

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

0.7 - 3.8

1.6

1.6

µs

µs

v00.0905