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
Positive Control Voltage
360° Coverage, LSB = 5.625°
Die Size: 3.27 x 1.90 x 0.1 mm
3
PHASE SHIFTERS - DIGITAL - CHIP
• Weather & Military Radar
• Satellite Communications
• Beamforming Modules
• Phase Cancellation
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 Specifi cations,
T
A
= +25° C,
Vss= -5V, Vdd= +5V, Control Voltage = 0/+5V, 50 Ohm System
Parameter
Frequency Range
Insertion Loss*
Input Return Loss*
Output Return Loss*
Phase Error*
RMS Phase Error
Insertion Loss Variation*
Input Power for 1 dB Compression
Input Third Order Intercept
Control Voltage Current
Bias Control Current
*Note: Major States Shown
Min.
2.9
4
16
14
±5
1.5
±0.5
31
45
35
5
250
15
+10 / -18
Typ.
Max.
3.9
6
Units
GHz
dB
dB
dB
deg
deg
dB
dBm
dBm
μA
mA
3 - 38
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
HMC648
v02.1109
GaAs MMIC 6-BIT DIGITAL
PHASE SHIFTER, 2.9 - 3.9 GHz
Insertion Loss, Major States Only
0
-2
INSERTION LOSS (dB)
-4
-6
-8
-10
-12
2.4
Normalized Loss, Major States Only
6
4
2
0
-2
-4
-6
2.4
NORMALIZED LOSS (dB)
3
PHASE SHIFTERS - DIGITAL - CHIP
3 - 39
2.8
3.2
3.6
4
4.4
2.8
3.2
3.6
4
4.4
FREQUENCY (GHz)
FREQUENCY (GHz)
Input Return Loss, Major States Only
0
-5
RETURN LOSS (dB)
-10
-15
-20
-25
-30
2.4
Phase Error, Major States Only
20
15
PHASE ERROR (degrees)
10
5
0
-5
-10
-15
-20
2.4
2.8
3.2
3.6
4
4.4
2.8
3.2
3.6
4
4.4
FREQUENCY (GHz)
FREQUENCY (GHz)
Output Return Loss, Major States Only
0
-5
RETURN LOSS (dB)
-10
-15
-20
-25
-30
2.4
Relative Phase Shift
Major States, Including All Bits
400
RELATIVE PHASE SHIFT (degrees)
350
300
250
200
150
100
50
0
2.4
2.8
3.2
3.6
4
4.4
2.8
3.2
3.6
4
4.4
FREQUENCY (GHz)
FREQUENCY (GHz)
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
HMC648
v02.1109
GaAs MMIC 6-BIT DIGITAL
PHASE SHIFTER, 2.9 - 3.9 GHz
Relative Phase Shift,
RMS, Average, Max, All States
30
RELATIVE PHASE SHIFT (degrees)
25
20
15
10
5
0
-5
-10
2.9
MAX
AVERAGE
RMS
Input IP3, Major States Only
60
55
50
IP3 (dBm)
45
40
35
30
2.9
3
PHASE SHIFTERS - DIGITAL - CHIP
3.1
3.3
3.5
3.7
3.9
3.1
3.3
3.5
3.7
3.9
FREQUENCY (GHz)
FREQUENCY (GHz)
Input IP2, Major States Only
110
Input P1dB, Major States Only
40
35
30
25
20
15
10
2.9
100
P1dB (dBm)
3.1
3.3
3.5
3.7
3.9
IP2 (dBm)
90
80
70
60
2.9
3.1
3.3
3.5
3.7
3.9
FREQUENCY (GHz)
FREQUENCY (GHz)
RMS Phase Error vs. Temperature
10
RELATIVE PHASE SHIFT (degrees)
Insertion Loss vs. Temperature,
Major States Only
0
-2
5
INSERTION LOSS (dB)
-4
-6
-8
-10
-12
2.9
0
-5
+25C
+85C
-40C
-10
2.9
3.1
3.3
3.5
3.7
3.9
3.1
3.3
3.5
3.7
3.9
FREQUENCY (GHz)
FREQUENCY (GHz)
3 - 40
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
HMC648
v02.1109
GaAs MMIC 6-BIT DIGITAL
PHASE SHIFTER, 2.9 - 3.9 GHz
Absolute Maximum Ratings
Input Power (RFIN)
33 dBm (T= +85 °C)
-0.2 to +12V
+0.2 to -12V
150 °C
120 °C/W
Bias Voltage Range (Vdd)
Bias Voltage Range (Vss)
Channel Temperature (Tc)
Phase Error vs. State
10
3.1, 3.3, 3.5, 3.7, 3.9 GHz
PHASE ERROR (degrees)
5
0
Thermal Resistance
(channel to die bottom)
-5
3
PHASE SHIFTERS - DIGITAL - CHIP
3 - 41
Storage Temperature
2.9 GHz
-65 to +150 °C
-55 to +85 °C
-10
Operating Temperature
-15
0
45
90
135
180
225
270
315
360
STATE (degrees)
ELECTROSTATIC SENSITIVE DEVICE
OBSERVE HANDLING PRECAUTIONS
Truth Table
Control Voltage Input
Bit 1
0
1
0
0
0
0
0
1
Bit 2
0
0
1
0
0
0
0
1
Bit 3
0
0
0
1
0
0
0
1
Bit 4
0
0
0
0
1
0
0
1
Bit 5
0
0
0
0
0
1
0
1
Bit 6
0
0
0
0
0
0
1
1
Phase Shift
(Degrees)
RFIN - RFOUT
Reference*
5.625
11.25
22.5
45.0
90.0
180.0
354.375
Bias Voltage & Current
Vdd
5.0
Vss
-5.0
Idd
5.2mA
Iss
5.2mA
Control Voltage
State
Low (0)
High (1)
Bias Condition
0 to 0.2 Vdc
Vdd ±0.2 Vdc @ 35 μA Typ.
Any combination of the above states will provide a phase shift
approximately equal to the sum of the bits selected.
*Reference corresponds to monotonic setting
Pad Descriptions
Pad Number
1
Function
RFIN
Description
This port is DC coupled and matched to 50 Ohms.
Interface Schematic
2, 11
GND
These pads and die bottom
must be connected to RF/DC ground.
Supply voltage.
Control Input. See truth table
and control voltage tables.
Supply voltage.
3
4 - 6,
8 - 10
7
Vdd
BIT1, BIT2, BIT3,
BIT4, BIT5. BIT6
Vss
RFOUT
12
This port is DC coupled and matched to 50 Ohms.
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
HMC648
v02.1109
GaAs MMIC 6-BIT DIGITAL
PHASE SHIFTER, 2.9 - 3.9 GHz
Outline Drawing
3
PHASE SHIFTERS - DIGITAL - CHIP
Die Packaging Information
[1]
Standard
GP-1 (Gel Pack)
Alternate
[2]
NOTES:
1. ALL DIMENSIONS IN INCHES (MILLIMETERS)
2. DIE THICKNESS IS 0.004
3. BACKSIDE METALLIZATION: GOLD
4. BACKSIDE METAL IS GROUND
5. BOND PADS METALLIZATION: GOLD
6. OVERALL DIE SIZE ±0.002
[1] Refer to the “Packaging Information” section for die
packaging dimensions.
[2] For alternate packaging information contact Hittite
Microwave Corporation.
3 - 42
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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