HMC648
v02.1109
GaAs MMIC 6-BIT DIGITAL
PHASE SHIFTER, 2.9 - 3.9 GHz
Typical Applications
The HMC648 is ideal for:
• EW Receivers
Features
Low RMS Phase Error: 1.5°
Low Insertion Loss: 4 dB
High Linearity: +45 dBm
• Weather & Military Radar
• Satellite Communications
• Beamforming Modules
• Phase Cancellation
3
Positive Control Voltage
360° Coverage, LSB = 5.625°
Die Size: 3.27 x 1.90 x 0.1 mm
Functional Diagram
General Description
The HMC648 is a 6-bit digital phase shifter die
which is rated from 2.9 to 3.9 GHz, providing 360
degrees of phase coverage, with a LSB of 5.625
degrees. The HMC648 features very low RMS phase
error of 1.5 degrees and extremely low insertion loss
variation of 0.5 dB across all phase states. This
high accuracy phase shifter is controlled with posi-
tive control logic of 0/+5V, and is internally matched to
50 Ohms with no external components.
Electrical Specifications, TA = +25° C,
Vss= -5V, Vdd= +5V, Control Voltage = 0/+5V, 50 Ohm System
Parameter
Min.
2.9
Typ.
Max.
3.9
6
Units
GHz
dB
Frequency Range
Insertion Loss*
4
16
14
5
Input Return Loss*
Output Return Loss*
Phase Error*
dB
dB
+10 / -18
deg
deg
dB
RMS Phase Error
Insertion Loss Variation*
1.5
0.5
31
45
35
5
Input Power for 1 dB Compression
Input Third Order Intercept
Control Voltage Current
dBm
dBm
μA
250
15
Bias Control Current
mA
*Note: Major States Shown
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
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