HMC472ALP4 / 472ALP4E

v02.0420

0.5 dB LSB GaAs MMIC 6-BIT DIGITAL

POSITIVE CONTROL ATTENUATOR, DC - 3.8 GHz

Typical Applications Features

The HMC472ALP4E is ideal for: 0.5 dB LSB Steps to 31.5 dB
ATTENUATORS - DIGITAL - SMT

• 3G Infrastructure & access points Single Control Line Per Bit

• Cellular/3G, LTE & UMB TTL/CMOS Compatible Control

• WiMAX, WiBN & Fixed Wireless ± 0.25 dB Typical Step Error

• Test Equipment and Sensors Single +5V Supply

24 Lead Ceramic 4x4mm SMT Package: 16mm²
• GSM, WCDMA & TD-SCDMA

Functional Diagram General Description

The HMC472ALP4E are broadband 6-bit GaAs IC
digital attenuators in low cost leadless surface mount
packages. This single positive control line per bit
digital attenuator incorporates off chip AC ground
capacitors for near DC operation, making it suit-
able for a wide variety of RF and IF applications.
Covering DC to 3.8 GHz, the insertion loss is less
than 2.0 dB typical. The attenuator bit values are 0.5
(LSB), 1, 2, 4, 8, and 16 dB for a total attenuation of
31.5 dB. Attenuation accuracy is excellent at ± 0.25 dB
typical step error with an IIP3 of +54 dBm. Six TTL/
CMOS control inputs are used to select each attenua-
tion state. A single Vdd bias of +5V is required.

Electrical Specifications,
TA = +25° C, With Vdd = +5V & Vctl = 0/+5V (Unless Otherwise Noted)
Parameter Frequency (GHz) Min. Typ. Max. Units
DC - 1.5 GHz 1.4 1.8 dB
Insertion Loss 1.5 - 3.0 GHz 1.7 2.3 dB
3.0 - 3.8 GHz 1.9 3 dB
Attenuation Range DC - 3.8 GHz 31.5 dB

Return Loss (RF1 & RF2, All Atten. States) DC - 3.8 GHz 20 dB

Attenuation Accuracy: (Referenced to Insertion

Loss)
DC - 1.0 GHz ± (0..20 + 3% of Atten. Setting) Max. dB
All Attenuation States
1.0 - 2.2 GHz ± (0.25 + 3% of Atten. Setting) Max. dB
0.5 - 3.5 dB States
1.0 - 2.2 GHz ± (0.15 + 4% of Atten. Setting) Max. dB
4.0 - 31.5 dB States
2.2 - 3.0 GHz ± (0.30 + 3% of Atten. Setting) Max dB
All Attenuation States
3.0 - 3.8 GHz ± (0.35 + 5% of Atten. Setting) Max. dB
All Attenuation States
Input Power for 0.1 dB Compression 0.1 - 3.8 GHz 30 dBm
Input Third Order Intercept Point REF - 15.5 dB States 54 dBm
0.1 - 3.8 GHz
(Two-Tone Input Power= 0 dBm Each Tone) 16.0 - 31.5 dB States 49 dBm
Switching Characteristics
DC - 3.8 GHz
tRISE, tFALL (10/90% RF) 40 ns
tON, tOFF (50% CTL to 10/90% RF) 60 ns

Information furnished by Analog Devices is believed to be accurate and reliable. However, no For price, delivery, and to place orders: Analog Devices, Inc.,
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106
rights of third parties that may result from its use. Specifications subject to change without notice. No
1 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.
Phone: 781-329-4700 • Order online at www.analog.com
Application Support: Phone: 1-800-ANALOG-D
 HMC472ALP4 / 472ALP4E
v02.0420

0.5 dB LSB GaAs MMIC 6-BIT DIGITAL

POSITIVE CONTROL ATTENUATOR, DC - 3.8 GHz

Insertion Loss Insertion Loss

0 0

ATTENUATORS - DIGITAL - SMT

-0.5 -0.5
+25 C
IN SE R T IO N LO SS (dB)

IN SE R T IO N LO SS (dB )
+85 C
-40 C
-1 -1

-1.5 -1.5

+25C
-2 +85C -2
-40C

-2.5 -2.5

-3 -3
0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0 0.5 1 1.5 2 2.5 3 3.5 4
F R E Q U E N C Y (G H z) F R E Q U E N C Y (G H z)

Return Loss RF1, RF2 Return Loss RF1, RF2

(Only Major States are Shown) (Only Major States are Shown)
0 0

-5 -5
R E T U RN LO SS (dB)

R E T U RN LO SS (dB)

-10 -10
0.5-16 dB
-15 -15

-20 -20

-25 -25

-30 -30
31.5 dB

-35 -35
0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0 0.5 1 1.5 2 2.5 3 3.5 4
F R E Q U E N C Y (G H z) F R E Q U E N C Y (G H z )

Normalized Attenuation Normalized Attenuation

(Only Major States are Shown) (Only Major States are Shown)
0 0
N O R MALIZ E D AT T E NU AT IO N (dB)

N O R MALIZ E D AT T E NU AT IO N (dB)

-5 -5

-10 -10

-15 -15

-20 -20

-25 -25

-30 -30

-35 -35
0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0 0.5 1 1.5 2 2.5 3 3.5 4
F R E Q U E N C Y (G H z) F R E Q U E N C Y (G H z)

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 2
 HMC472ALP4 / 472ALP4E
v02.0420

0.5 dB LSB GaAs MMIC 6-BIT DIGITAL

POSITIVE CONTROL ATTENUATOR, DC - 3.8 GHz

Bit Error vs. Attenuation State Bit Error vs. Attenuation State
0.1 2
0
1.5
ATTENUATORS - DIGITAL - SMT

-0.1
-0.2 1
200 M Hz
BIT E R R O R (dB)

3 GHz, 3.8 GHz 100 MHz, 2 GHz

BIT ERROR (dB)

-0.3 0.5
50 MHz
-0.4
0
-0.5 100 M Hz, 300 MHz , 350 MHz

-0.6 -0.5
-0.7
-1
-0.8
-1.5 40 MHz
-0.9 500 MHz, 1 GHz
-1 -2
0 4 8 12 16 20 24 28 32 0 4 8 12 16 20 24 28 32
AT TE N U ATIO N ST AT E (dB) ATTENUATION STAT E (dB)

Bit Error vs. Frequency Bit Error vs. Frequency

(Only Major States are Shown) (Only Major States are Shown)
2 2

1.5
31. 5 dB
0.5 - 4, 16 dB 31.5 dB 1
1 16 dB
BIT E R R O R (dB)
BIT ERROR (dB)

0.5

0 0

-0.5
8 dB 0.5-4 dB
-1 8 dB -1

-1.5

-2 -2
0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0 0.5 1 1.5 2 2.5 3 3.5 4

FREQUENCY (GHz) F R E Q U E N C Y (G H z)

Bit Error vs. Frequency without

AC Ground Caps
(Only Major States are Shown)
3
2.5
2
8 - 31.5 dB
1.5 0.5 - 4 dB
BIT E R R O R (dB)

1
0.5
0
-0.5
-1
-1.5
-2
-2.5
-3
0 0.5 1 1.5 2 2.5 3 3.5 4

F R E Q U E N C Y (G H z)

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
3 Application Support: Phone: 1-800-ANALOG-D
 HMC472ALP4 / 472ALP4E
v02.0420

0.5 dB LSB GaAs MMIC 6-BIT DIGITAL

POSITIVE CONTROL ATTENUATOR, DC - 3.8 GHz

Relative Phase vs. Frequency Worst Case Step Error

(Only Major States are Shown) Between Successive Attenuation States
100 1

ATTENUATORS - DIGITAL - SMT

80
0.6
R E LAT IVE PH ASE (deg)

60

ST E P E RR O R (dB)
40 0.2
31. 5 dB 16 dB 8 dB
20
-0.2

0
-0.6
-20
0.5-4 dB

-40 -1
0 0.5 1 1.5 2 2.5 3 3.5 4 0 0.5 1 1.5 2 2.5 3 3.5 4
F R E Q U E N C Y (G H z) F R E Q U E N C Y (G H z)

Bias Voltage & Current Truth Table

Vdd = +5V ± 10% Control Voltage Input Attenuation
Vdd Idd (Typ.) V1 V2 V3 V4 V5 V6 State
(V) (mA) 16 dB 8 dB 4 dB 2 dB 1 dB 0.5 dB RF1 - RF2
+4.5 2.4 Reference
High High High High High High
+5.0 2.5 I.L.

+5.5 2.6 High High High High High Low 0.5 dB

High High High High Low High 1 dB
High High High Low High High 2 dB

Control Voltage High High Low High High High 4 dB

High Low High High High High 8 dB
State Bias Condition
Low High High High High High 16 dB
Low 0 to +0.8 Vdc @ -5 uA Typ.
Low Low Low Low Low Low 31.5 dB
High + 2.0 to + 5.0 Vdc @ 40 uA Typ.
Any combination of the above states will provide an attenuation
Note: Vdd = +5V approximately equal to the sum of the bits selected.

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 4
 HMC472ALP4 / 472ALP4E
v02.0420

0.5 dB LSB GaAs MMIC 6-BIT DIGITAL

POSITIVE CONTROL ATTENUATOR, DC - 3.8 GHz

Absolute Maximum Ratings

RF Input Power (DC - 3 GHz) +28 dBm (T = +85 °C)
Control Voltage Range (V1 to V6) -1V to Vdd +1V
ELECTROSTATIC SENSITIVE DEVICE
ATTENUATORS - DIGITAL - SMT

Bias Voltage (Vdd) +7V

OBSERVE HANDLING PRECAUTIONS
Channel Temperature 150 °C
Continuous Pdiss (T = 85 °C)
0.56 W
(derate 8.6 mW/°C above 85 °C)
Thermal Resistance 116 °C/W
Storage Temperature -65 to +150 °C
Operating Temperature -40 to +85 °C
ESD Sensitivity (HBM) Class 1A

24-Lead Lead Frame Chip Scale Package [LFCSP]

4 x 4 mm Body and 0.85 mm Package Height
Outline Drawing (CP-24-16)
Dimensions shown in millimeters

DETAIL A
(JEDEC 95)

4.10 0.30
4.00 SQ 0.25
PIN 1
INDICATOR 3.90 0.18 PIN 1
AREA INDICATOR AREA OPTIONS
(SEE DETAIL A)
19 24

18 1

0.50
BSC 2.80
EXPOSED
PAD 2.70 SQ
2.60

13 6

0.50 12 7
0.20 MIN
TOP VIEW BOTTOM VIEW
0.40
0.30
0.90
0.85 SIDE VIEW
0.05 MAX
0.80
0.02 NOM
COPLANARITY
SEATING 0.08
PLANE 0.20 REF
PKG-004926/004942

09-10-2018-C

COMPLIANT TO JEDEC STANDARDS MO-220-VGGD-8

24-Lead Lead Frame Chip Scale Package [LFCSP]

4 mm × 4 mm Body and 0.85 mm Package Height
(CP-24-16)
Dimensions shown in millimeters

Package Information
Part Number Package Body Material Lead Finish MSL Rating Package Marking [3]
[1] H472A
HMC472ALP4 Low Stress Injection Molded Plastic Sn/Pb Solder MSL3
XXXX
[1] H472A
HMC472ALP4TR Low Stress Injection Molded Plastic Sn/Pb Solder MSL3
XXXX
[2] H472A
HMC472ALP4E RoHS-compliant Low Stress Injection Molded Plastic 100% matte Sn MSL3
XXXX
[2] H472A
HMC472ALP4ETR RoHS-compliant Low Stress Injection Molded Plastic 100% matte Sn MSL3
XXXX
[1] Max peak reflow temperature of 235 °C
[2] Max peak reflow temperature of 260 °C
[3] 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
5 Application Support: Phone: 1-800-ANALOG-D
 HMC472ALP4 / 472ALP4E
v02.0420

0.5 dB LSB GaAs MMIC 6-BIT DIGITAL

POSITIVE CONTROL ATTENUATOR, DC - 3.8 GHz

Pin Descriptions
Pin Number Function Description Interface Schematic
1, 3, 5, 12, These pins should be connected to PCB RF ground to

ATTENUATORS - DIGITAL - SMT

N/C
14, 16, 17, 18 maximize performance.

2 Vdd Supply Voltage.

This pin is DC coupled and matched to 50 Ohm.

4, 15 RF1, RF2 Blocking capacitors are required. Select value based on
lowest frequency of operation.

External capacitors to ground are recommended for low and

high frequency operation. Select value for
6 - 11, 13 ACG1 - ACG7 lowest frequency of operation. Place capacitor as close
to pins as possible. For operation from 700 to 2700 MHz,
these pins may be left unconnected.

19 - 24 V1 - V6 See truth table and control voltage table.

Package bottom has an exposed metal paddle that must also

GND
be connected to RF/DC Ground.

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 6
 HMC472ALP4 / 472ALP4E
v02.0420

0.5 dB LSB GaAs MMIC 6-BIT DIGITAL

POSITIVE CONTROL ATTENUATOR, DC - 3.8 GHz

Application Circuit
ATTENUATORS - DIGITAL - SMT

Note: For operations from 700 to 2700 MHz, pins 6 through 13 may be left unconnected.

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
7 Application Support: Phone: 1-800-ANALOG-D
 HMC472ALP4 / 472ALP4E
v02.0420

0.5 dB LSB GaAs MMIC 6-BIT DIGITAL

POSITIVE CONTROL ATTENUATOR, DC - 3.8 GHz

Evaluation PCB

ATTENUATORS - DIGITAL - SMT

List of Materials for Evaluation PCB 107010 - HMC472ALP4 [1]
Item Description The circuit board used in the application should use
J1 - J2 PCB Mount SMA Connector RF circuit design techniques. Signal lines should
J3 14 Pin DC Connector have 50 Ohm impedance while the package ground
C1 1000 pF Capacitor, 0603 Pkg. leads and exposed paddle should be connected
C2, C3 1000 pF Capacitor, 0402 Pkg. directly to the ground plane similar to that shown.
C4 - C7 330 pF Capacitor, 0402 Pkg.
A sufficient number of via holes should be used to
U1 HMC472ALP4E Digital Attenuator
connect the top and bottom ground planes. The
PCB [2] 106977 Evaluation PCB
evaluation circuit board shown is available from
[1] Reference this number when ordering complete evaluation PCB
Analog Devices, upon request.
[2] Circuit Board Material: Rogers 4350

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 8