5

5 - 24

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

HMC643

GaAs MMIC 6-BIT DIGITAL

PHASE SHIFTER, 9 - 12 GHz

v01.0707

General Description

Features

Functional Diagram

The

HMC643

is

a

6-bit

digital

phase

shifter

die which is rated from 9 to 12 GHz, providing 360

degrees of phase coverage, with a LSB of 5.625

degrees. The HMC643 features very low RMS phase

error of 3.5 degrees and extremely low insertion

loss variation of ±0.6 dB across all phase states.

This high accuracy phase shifter is controlled with

complementary logic of 0/-3V, and requires no fixed

bias voltage and is internally matched to 50 Ohms with

no external components. Simple external level shifting

circuitry can be used to convert a positive CMOS

control voltage into complementary negative control

signals.

Low RMS Phase Error: 3.5°

Low Insertion Loss: 6.5 dB

High Linearity: +38 dBm

360° Coverage, LSB = 5.625°

Die Size: 2.75 x 0.99 x 0.1 mm

Typical Applications

The HMC643 is ideal for:

• EW Receivers

• Weather & Military Radar

• Satellite Communications

• Beamforming Modules

• Phase Cancellation

Parameter

Min.

Typ.

Max.

Units

Frequency Range

9

12

GHz

Insertion Loss*

6.5

10.0

dB

Input Return Loss*

15

dB

Output Return Loss*

12

dB

Phase Error*

±7

-10 / +15

deg

RMS Phase Error

3.5

deg

Insertion Loss Variation*

±0.6

dB

Input Power for 1 dB Compression

22

dBm

Input Third Order Intercept

38

dBm

Control Voltage Current

<1

μA

*Note: Major States Shown