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1 dB LSB GaAs MMIC 5-BIT DIGITAL

POSITIVE CONTROL ATTENUATOR, DC - 3 GHz

v04.1108

Functional Diagram

Electrical Specifications,

T

The HMC470LP3(E) is ideal for:

• Cellular; UMTS/3G Infrastructure

• ISM, MMDS, WLAN, WiMAX

• Microwave Radio & VSAT

• Test Equipment and Sensors

1 dB LSB Steps to 31 dB

Single Control Line Per Bit

TTL/CMOS Compatible Control

± 0.3 dB Typical Step Error

Single +5V Supply

16 Lead 3x3mm SMT Package: 9mm2

Included in the HMC-DK004 Designer’s Kit

The HMC470LP3(E) is a broadband 5-bit GaAs IC

digital attenuators in low cost leadless surface mo-

unt packages. This single positive control line per

bit digital attenuator incorporates off chip AC ground

capacitors for near DC operation, making it suitable

for a wide variety of RF and IF applications. Covering

DC to 3 GHz, the insertion loss is less than 1.5 dB

typical. The attenuator bit values are 1 (LSB), 2, 4, 8,

and 16 dB for a total attenuation of 31 dB. Attenuation

accuracy is excellent at ± 0.3 dB typical step error with

an IIP3 of +45 dBm. Five TTL/CMOS control inputs

are used to select each attenuation state. A single Vdd

bias of +5V is required.

Parameter

Frequency (GHz)

Min.

Typ.

Max.

Units

Insertion Loss

DC - 1.5 GHz

1.5 - 2.3 GHz

2.3 - 3.0 GHz

1.3

1.4

1.7

1.6

1.7

2.0

dB

dB

dB

Attenuation Range

DC - 3 GHz

31

dB

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

DC - 3 GHz

17

dB

Attenuation Accuracy: (Referenced to Insertion Loss)

All Attenuation States

1.0 - 15.0 dB States

16.0 - 31.0 dB States

DC - 2.3 GHz

2.3 - 3.0 GHz

2.3 - 3.0 GHz

± (0.3 + 2% of Atten. Setting) Max.

± (0.3 + 3% of Atten. Setting) Max.

± (0.3 + 6% of Atten. Setting) Max.

dB

dB

dB

Input Power for 0.1 dB Compression

0.1 - 3.0 GHz

20

dBm

Input Third Order Intercept Point

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

REF - 15 dB

States

16 - 31 dB States

0.1 - 3.0 GHz

45

35

dBm

dBm

Switching Characteristics

tRISE, tFALL (10/90% RF)

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

DC - 3 GHz

160

180

ns

ns

Typical Applications

Features

General Description