PHASE SHIFTERS - DIGITAL - SMT
1
HMC644ALC5
v00.0216
GaAs MMIC 5-BIT DIGITAL
PHASE SHIFTER, 15 - 18.5 GHz
For price, delivery, and to place orders: Analog Devices, Inc.,
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106
Phone: 781-329-4700 • Order online at www.analog.com
Application Support: Phone: 1-800-ANALOG-D
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
General Description
Features
Functional Diagram
The HMC644ALC5 is a 5-bit digital phase shifter
which is rated from 15 to 18.5 GHz, providing 360
degrees of phase coverage, with a LSB of 11.25
degrees. The HMC644ALC5 features very low
RMS phase error of 3.5 degrees and extremely low
insertion loss variation of ±0.5 dB across all phase
states. This high accuracy phase shifter is controlled
with complementary logic of 0/-3V, and requires no
fixed bias voltage. The HMC644ALC5 is housed in
a compact 5x5 mm ceramic leadless SMT package
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: 7.5 dB
High Linearity: +40 dBm
360° Coverage, LSB = 11.25°
32 Lead Ceramic SMT Package: 25mm2
Electrical Specifications, TA = +25° C, 50 Ohm System, Control Voltage = 0/-3V
Typical Applications
The HMC644ALC5 is ideal for:
• EW Receivers
• Weather & Military Radar
• Satellite Communications
• Beamforming Modules
• Phase Cancellation
Parameter Min. Typ. Max. Units
Frequency Range 15 18.5 GHz
Insertion Loss 7.5 10 dB
Input Return Loss 10 dB
Output Return Loss 12 dB
Phase Error ±5 +20 / -10 deg
RMS Phase Error 3.5 deg
Insertion Loss Variation ±0.5 dB
Input Power for 1 dB Compression 23 dBm
Input Third Order Intercept 40 dBm
Control Voltage Current <1 mA
For price, delivery, and to place orders: Analog Devices, Inc., One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106
Phone: 781-329-4700 • Order online at www.analog.com
Application Support: Phone: 1-800-ANALOG-D
PHASE SHIFTERS - DIGITAL - SMT
2
HMC644ALC5
v00.0216
GaAs MMIC 5-BIT DIGITAL
PHASE SHIFTER, 15 - 18.5 GHz
Insertion Loss, Major States Only Normalized Loss, Major States Only
Phase Error, Major States Only
Input Return Loss, Major States
Only
Output Return Loss, Major States Only
Relative Phase Shift
Major States Including All Bits
-12
-10
-8
-6
-4
-2
0
14 15 16 17 18 19 20
0
11.25
22.5
45
90
180
348.75
INSERTION LOSS (dB)
FREQUENCY (GHz)
-4
-3
-2
-1
0
1
2
3
4
14 15 16 17 18 19 20
0
11.25
22.5
45
90
180
348.75
NORMALIZED LOSS (dB)
FREQUENCY (GHz)
-30
-25
-20
-15
-10
-5
0
14 15 16 17 18 19 20
0
11.25
22.5
45
90
180
348.75
RETURN LOSS (dB)
FREQUENCY (GHz)
-20
-10
0
10
20
14 15 16 17 18 19 20
0
11.25
22.5
45
90
180
348.75
PHASE ERROR (degrees)
FREQUENCY (GHz)
-30
-25
-20
-15
-10
-5
0
14 15 16 17 18 19 20
0
11.25
22.5
45
90
180
348.75
RETURN LOSS (dB)
FREQUENCY (GHz)
0
50
100
150
200
250
300
350
400
14 15 16 17 18 19 20
0
11.25
22.5
45
90
180
348.75
RELATIVE PHASE SHIFT (degrees)
FREQUENCY (GHz)
For price, delivery, and to place orders: Analog Devices, Inc., One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106
Phone: 781-329-4700 • Order online at www.analog.com
Application Support: Phone: 1-800-ANALOG-D
PHASE SHIFTERS - DIGITAL - SMT
3
HMC644ALC5
v00.0216
GaAs MMIC 5-BIT DIGITAL
PHASE SHIFTER, 15 - 18.5 GHz
Relative Phase Shift,
RMS, Average, Max, All States Input IP3, Major States Only
Input IP2, Major States Only Input P1dB, Major States Only
RMS Phase Error vs. Temperature Insertion Loss +25C, Major States Only
-10
-5
0
5
10
15
20
25
30
15 15.5 16 16.5 17 17.5 18 18.5
RMS
AVERAGE
MAX
RELATIVE PHASE SHIFT (degrees)
FREQUENCY (GHz)
25
30
35
40
45
50
55
15 15.5 16 16.5 17 17.5 18 18.5
0
11.25
22.5
45
90
180
348.75
IP3 (dBm)
FREQUENCY (GHz)
50
60
70
80
90
100
15 15.5 16 16.5 17 17.5 18 18.5
0
11.25
22.5
90
45
180
348.75
IP2 (dBm)
FREQUENCY (GHz)
10
15
20
25
30
35
40
15 15.5 16 16.5 17 17.5 18 18.5
0
11.25
22.5
45
90
180
348.75
P1dB (dBm)
FREQUENCY (GHz)
-10
-5
0
5
10
15
20
15 15.5 16 16.5 17 17.5 18 18.5
+25C +85C -40C
RELATIVE PHASE SHIFT (degrees)
FREQUENCY (GHz)
-12
-10
-8
-6
-4
-2
0
15 15.5 16 16.5 17 17.5 18 18.5
0
11.25
22.5
45
90
180
348.75
INSERTION LOSS (dB)
FREQUENCY (GHz)
For price, delivery, and to place orders: Analog Devices, Inc., One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106
Phone: 781-329-4700 • Order online at www.analog.com
Application Support: Phone: 1-800-ANALOG-D
PHASE SHIFTERS - DIGITAL - SMT
4
HMC644ALC5
v00.0216
GaAs MMIC 5-BIT DIGITAL
PHASE SHIFTER, 15 - 18.5 GHz
Absolute Maximum Ratings
Input Power (RFIN) 26 dBm (T= +85 °C)
Channel Temperature (Tc) 150 °C
Thermal Resistance
(channel to ground paddle) 150 °C/W
Storage Temperature -65 to +150 °C
Operating Temperature -40 to +85 °C
ESD sensitivity(HBM) Class 0 Passed 100V
ELECTROSTATIC SENSITIVE DEVICE
OBSERVE HANDLING PRECAUTIONS
Truth Table
Control Voltage
State Bias Condition
Low (0) -2.5 to -3.5V @ 0.4 µA Typ.
Hig h (1) 0 to +0.3V @ 0.4 µA Typ.
Phase Error vs. State, Major States
Only
Control Voltage Input Phase Shift
(Degrees)
RFIN -
RFOUT
Bit 1 Bit 2 Bit 2 Bit 3 Bit 3 Bit 4 Bit 4 Bit 5 Bit 5
0 0 1 0 1 0 1 0 1 Reference*
1 0 1 0 1 0 1 0 1 11.2 5
0 1 0 0 1 0 1 0 1 22.5
0 0 1 1 0 0 1 0 1 45.0
0 0 1 0 1 1 0 0 1 90.0
0 0 1 0 1 0 1 1 0 180.0
1 1 0 1 0 1 0 1 0 348.75
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
-20
-10
0
10
20
30
0 45 90 135 180 225 270 315 360
15GHz
16GHz
17GHz
18GHz
18.5GHz
PHASE ERROR (degrees)
STATE (degrees)
Insertion Loss +85C, Major States Only Insertion Loss -40C, Major States Only
-12
-10
-8
-6
-4
-2
0
15 15.5 16 16.5 17 17.5 18 18.5
0
11.25
22.5
45
90
180
348.75
INSERTION LOSS (dB)
FREQUENCY (GHz)
-12
-10
-8
-6
-4
-2
0
15 15.5 16 16.5 17 17.5 18 18.5
0
11.25
22.5
45
90
180
348.75
INSERTION LOSS (dB)
FREQUENCY (GHz)
For price, delivery, and to place orders: Analog Devices, Inc., One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106
Phone: 781-329-4700 • Order online at www.analog.com
Application Support: Phone: 1-800-ANALOG-D
PHASE SHIFTERS - DIGITAL - SMT
5
HMC644ALC5
v00.0216
GaAs MMIC 5-BIT DIGITAL
PHASE SHIFTER, 15 - 18.5 GHz
Outline Drawing
NOTES:
1. PACKAGE BODY MATERIAL: ALUMINA
2. LEAD AND GROUND PADDLE PLATING: 30-80 MICROINCHES
GOLD OVER
50 MICROINCHES MINIMUM NICKEL.
3. DIMENSIONS ARE IN INCHES [MILLIMETERS].
4. LEAD SPACING TOLERANCE IS NON-CUMULATIVE
5. PACKAGE WARP SHALL NOT EXCEED 0.05mm DATUM -C-
6. ALL GROUND LEADS AND GROUND PADDLE MUST BE SOL-
DERED
TO PCB RF GROUND.
Package Information
Part Number Package Body Material Lead Finish MSL Rating Package Marking [2]
HMC644ALC5 Alumina, White Gold over
Nickel MSL3 [1] H644A
XXXX
[1] Max peak reflow temperature of 260 °C
[2] 4-Digit lot number XXXX
For price, delivery, and to place orders: Analog Devices, Inc., One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106
Phone: 781-329-4700 • Order online at www.analog.com
Application Support: Phone: 1-800-ANALOG-D
PHASE SHIFTERS - DIGITAL - SMT
6
HMC644ALC5
v00.0216
GaAs MMIC 5-BIT DIGITAL
PHASE SHIFTER, 15 - 18.5 GHz
Pin Number Function Description Interface Schematic
1 - 4, 13
21 - 32 N/C
No connection required. These pins may be
connected to RF/DC ground without affecting
performance.
5, 7, 18, 20 GND These pins and exposed ground paddle
must be connected to RF/DC ground.
6RFIN This port is DC coupled and matched to 50
Ohms.
8, 10, 12,
14, 17
BIT4, BIT2, BIT1,
BIT3, BIT5
Non-Inverted Control Input. See truth table
and control voltage tables.
9, 11,
15, 16
BIT4, BIT2
BIT3, BIT5
Inverted Control Input. See truth table
and control voltage tables.
19 RFOUT This port is DC coupled and matched to 50
Ohms.
Pin Descriptions
For price, delivery, and to place orders: Analog Devices, Inc., One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106
Phone: 781-329-4700 • Order online at www.analog.com
Application Support: Phone: 1-800-ANALOG-D
PHASE SHIFTERS - DIGITAL - SMT
7
HMC644ALC5
v00.0216
GaAs MMIC 5-BIT DIGITAL
PHASE SHIFTER, 15 - 18.5 GHz
Application Circuit
This circuit converts a single line positive (0/+5V) control signal to complementary negative
(0/-3V) control signals.
For price, delivery, and to place orders: Analog Devices, Inc., One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106
Phone: 781-329-4700 • Order online at www.analog.com
Application Support: Phone: 1-800-ANALOG-D
PHASE SHIFTERS - DIGITAL - SMT
8
HMC644ALC5
v00.0216
GaAs MMIC 5-BIT DIGITAL
PHASE SHIFTER, 15 - 18.5 GHz
Evaluation PCB
The circuit board used in the final application
should use RF circuit design techniques. Signal
lines should have 50 ohm impedance while the
package ground leads and exposed paddle should
be connected directly to the ground plane similar to
that shown. A sufficient number of via holes should
be used to connect the top and bottom ground
planes. The evaluation board should be mounted
to an appropriate heat sink. The evaluation circuit
board shown is available from Hittite upon request.
List of Materials for Evaluation PCB 116685 [1] [3]
Item Description
J1 - J2 PCB Mount SMA RF Connector
J3 Molex Header 2mm
U1 HMC644ALC5 5-Bit Digital Phase
Shifter
PCB [2] 116683 Evaluation PCB
[1] Reference this number when ordering complete
evaluation PCB
[2] Circuit Board Material: Rogers 4350
[3] Please refer to part’s pin description and func-
tional diagram for
pin out assignments on evaluation board.
