10

10 - 202

For price, delivery, and to place orders, please contact Hittite Microwave Corporation:

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

Order On-line at www.hittite.com

0.5 dB LSB GaAs MMIC 6-BIT

DIGITAL ATTENUATOR, DC - 6 GHz

v02.0807

Functional Diagram

Electrical Specifications,

T

The HMC624LP4(E) is a broadband 6-bit GaAs IC

Digital Attenuator in a low cost leadless SMT package.

This versatile digital attenuator incorporates off-chip

AC ground capacitors for near DC operation, making

it suitable for a wide variety of RF and IF applications.

The dual mode control interface is CMOS/TTL

compatible, and accepts either a three wire serial

input or a 6 bit parallel word. The HMC624LP4(E) also

features a user selectable power up state and a serial

output port for cascading other Hittite serial controlled

components. The HMC624LP4(E) is housed in a

RoHS compliant 4x4 mm QFN leadless package, and

requires no external matching components.

Parameter

Frequency (GHz)

Min.

Typ.

Max.

Units

Insertion Loss

DC - 3.0 GHz

3.0 - 6.0 GHz

1.8

2.8

2.4

3.8

dB

dB

Attenuation Range

31.5

dB

Return Loss (ATTIN, ATTOUT, All Atten. States)

DC - 6.0 GHz

15

dB

Attenuation Accuracy: (Referenced to Insertion Loss)

All Attenuation States

DC - 0.8 GHz

0.8 - 6.0 GHz

± (0.10 + 5% of Atten. Setting) Max.

± (0.30 + 3% of Atten. Setting) Max.

dB

dB

Input Power for 0.1 dB Compression

DC - 6.0 GHz

30

dBm

Input Third Order Intercept Point

(Two-Tone Input Power= 10 dBm Each Tone)

DC - 6.0 GHz

55

dBm

Typical Applications

Features

General Description

The HMC624LP4(E) is ideal for:

• Cellular/3G Infrastructure

• WiBro / WiMAX / 4G

• Microwave Radio & VSAT

• Test Equipment and Sensors

• IF & RF Applications

0.5 dB LSB Steps to 31.5 dB

High Input IP3: +55 dBm

Low Insertion Loss: 2.2 dB @ 3.5 GHz

TTL/CMOS Compatible, Serial or Parallel Control

±0.25 dB Typical Step Error

Single +3V or +5V Supply

Compact 4x4mm SMT Package