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20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373

Order On-line at www.hittite.com

General Description

Features

Functional Diagram

RoHs Compliant Product

1 dB LSB Steps to 31 dB

Single Positive Control Per BIT

±0.2 dB Typical Bit Error

Included in the HMC-DK004 Designer’s Kit

Electrical Specifications,

T

Typical Applications

The

HMC273MS10G(E)

is

a

general

purpose

broadband 5-Bit positive control GaAs IC digital

attenuator in a 10 lead MSOP plastic package.

Covering 0.7 to 3.8 GHz, the insertion loss is typically

less than 2.5 dB.

The attenuator bit values are

1 (LSB), 2, 4, 8, and 16 dB for a total attenuation

of 31 dB.

Accuracy is excellent at ±0.2 dB typical

with an IIP3 of up to +48 dBm. Five bit control vol-

tage inputs, toggled between 0 and +3 to +5 volts, are

used to select each attenuation state. A single Vdd

bias of +3 to +5 volts applied through an external

5K Ohm resistor is required.

The HMC273MS10G(E) is ideal for:

• Cellular; UMTS/3G Infrastructure

• ISM, MMDS, WLAN, WiMAX

• Microwave Radio & VSAT

• Test Equipment and Sensors

Parameter

Frequency

Min.

Typical

Max.

Units

Insertion Loss

0.7 - 1.4 GHz

1.4 - 2.3 GHz

2.3 - 2.7 GHz

2.7 - 3.7 GHz

3.7 - 3.8 GHz

1.8

2.3

2.8

3.5

3.9

2.4

2.9

3.4

4.2

4.4

dB

dB

dB

dB

dB

Attenuation Range

0.7 - 3.8 GHz

31

dB

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

0.7 - 1.4 GHz

1.4 - 2.7 GHz

2.7 - 3.8 GHz

11

12

10

17

20

14

dB

dB

dB

Attenuation Accuracy: (Referenced to Insertion Loss)

All Attenuation States

All Attenuation States

All Attenuation States

All Attenuation States

0.7 - 1.4 GHz

1.4 - 2.2 GHz

2.2 - 2.7 GHz

2.7 - 3.8 GHz

± (0.30 + 3% of Atten. Setting) Max

± (0.30 + 4% of Atten. Setting) Max

± (0.40 + 5% of Atten. Setting) Max

± (0.50 + 5% of Atten. Setting) Max

dB

dB

dB

dB

Input Power for 0.1 dB Compression

Vdd = 5V

Vdd = 3V

0.7 - 3.8 GHz

27

22

dBm

dBm

Input Third Order Intercept Point

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

Vdd = 5V

Vdd = 3V

0.7 - 3.8 GHz

48

46

dBm

dBm

Switching Characteristics

tRISE, tFALL (10/90% RF)

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

0.7 - 3.8 GHz

560

600

ns

ns

1 dB LSB GaAs MMIC 5-BIT DIGITAL

ATTENUATOR, 0.7 - 3.8 GHz

v04.0907