HMC472ALP4E
v00.1212
0.5 dB LSB GaAs MMIC 6-BIT DIGITAL
POSITIVE CONTROL ATTENUATOR, DC - 3.8 GHz
Typical Applications
The HMC472ALP4E is ideal for:
Features
0.5 dB LSB Steps to 31.5 dB
Single Control Line Per Bit
TTL/CMOS Compatible Control
± 0.25 dB Typical Step Error
Single +5V Supply
24 Lead Ceramic 4x4mm SMT Package: 16mm²
ATTENUATORS - DIGITAL - SMT
• 3G Infrastructure & access points
• Cellular/3G, LTE & UMB
• WiMAX, WiBN & Fixed Wireless
• Test Equipment and Sensors
• 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,
Parameter
Insertion Loss
Attenuation Range
T
A
= +25° C, With Vdd = +5V & Vctl = 0/+5V
(Unless Otherwise Noted)
Frequency (GHz)
DC - 1.5 GHz
1.5 - 3.0 GHz
3.0 - 3.8 GHz
DC - 3.8 GHz
DC - 3.8 GHz
Min.
Typ.
1.4
1.7
1.9
31.5
20
Max.
1.8
2.3
3
Units
dB
dB
dB
dB
dB
Return Loss (RF1 & RF2, All Atten. States)
Attenuation Accuracy: (Referenced to Insertion
Loss)
All Attenuation States
0.5 - 3.5 dB States
4.0 - 31.5 dB States
All Attenuation States
All Attenuation States
Input Power for 0.1 dB Compression
Input Third Order Intercept Point
(Two-Tone Input Power= 0 dBm Each Tone)
Switching Characteristics
tRISE, tFALL (10/90% RF)
tON, tOFF (50% CTL to 10/90% RF)
REF - 15.5 dB States
16.0 - 31.5 dB States
DC - 1.0 GHz
1.0 - 2.2 GHz
1.0 - 2.2 GHz
2.2 - 3.0 GHz
3.0 - 3.8 GHz
0.1 - 3.8 GHz
0.1 - 3.8 GHz
DC - 3.8 GHz
± (0..20 + 3% of Atten. Setting) Max.
± (0.25 + 3% of Atten. Setting) Max.
± (0.15 + 4% of Atten. Setting) Max.
± (0.30 + 3% of Atten. Setting) Max
± (0.35 + 5% of Atten. Setting) Max.
30
54
49
dB
dB
dB
dB
dB
dBm
dBm
dBm
40
60
ns
ns
1
For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824
Phone: 978-250-3343
Fax: 978-250-3373
Order On-line at www.hittite.com
Application Support: Phone: 978-250-3343 or apps@hittite.com
HMC472ALP4E
v00.1212
0.5 dB LSB GaAs MMIC 6-BIT DIGITAL
POSITIVE CONTROL ATTENUATOR, DC - 3.8 GHz
Insertion Loss
0
-0.5
INSERTION LOSS (dB)
Insertion Loss
0
-0.5
INSERTION LOSS (dB)
-1
-1.5
-2
-2.5
-3
0
0.05
0.1
0.15
0.2
0.25
0.3
0.35
FREQUENCY (GHz)
+25C
+85C
-40C
-1
-1.5
-2
-2.5
-3
0
0.5
1
1.5
2
+25 C
+85 C
-40 C
2.5
3
3.5
4
FREQUENCY (GHz)
Return Loss RF1, RF2
0
-5
RETURN LOSS (dB)
(Only Major States are Shown)
Return Loss RF1, RF2
0
-5
RETURN LOSS (dB)
(Only Major States are Shown)
-10
-15
-20
-25
-30
-35
0
0.05
0.1
0.15
0.2
0.25
0.3
0.35
FREQUENCY (GHz)
-10
0.5-16 dB
-15
-20
-25
-30
-35
0
0.5
1
1.5
2
2.5
3
3.5
4
FREQUENCY (GHz)
31.5 dB
Normalized Attenuation
0
NORMALIZED ATTENUATION (dB)
(Only Major States are Shown)
Normalized Attenuation
0
NORMALIZED ATTENUATION (dB)
(Only Major States are Shown)
-5
-10
-15
-20
-25
-30
-35
0
0.05
0.1
0.15
0.2
0.25
0.3
0.35
FREQUENCY (GHz)
-5
-10
-15
-20
-25
-30
-35
0
0.5
1
1.5
2
2.5
3
3.5
4
FREQUENCY (GHz)
For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824
Phone: 978-250-3343
Fax: 978-250-3373
Order On-line at www.hittite.com
Application Support: Phone: 978-250-3343 or apps@hittite.com
ATTENUATORS - DIGITAL - SMT
2
HMC472ALP4E
v00.1212
0.5 dB LSB GaAs MMIC 6-BIT DIGITAL
POSITIVE CONTROL ATTENUATOR, DC - 3.8 GHz
Bit Error vs. Attenuation State
0.1
Bit Error vs. Attenuation State
2
1.5
BIT ERROR (dB)
200 MHz
ATTENUATORS - DIGITAL - SMT
0
-0.1
BIT ERROR (dB)
-0.2
-0.3
-0.4
-0.5
-0.6
-0.7
-0.8
-0.9
-1
0
4
8
12
16
20
24
50 MHz
100 MHz, 300 MHz, 350 MHz
1
0.5
0
-0.5
-1
-1.5
3 GHz, 3.8 GHz 100 MHz, 2 GHz
40 MHz
500 MHz, 1 GHz
28
32
-2
0
4
8
12
16
20
24
28
32
ATTENUATION STATE (dB)
ATTENUATION STAT E (dB)
Bit Error vs. Frequency
2
1.5
BIT ERROR (dB)
(Only Major States are Shown)
Bit Error vs. Frequency
2
(Only Major States are Shown)
0.5
0
-0.5
-1
-1.5
-2
0
0.05
0.1
0.15
0.2
0.25
0.3
0.35
8 dB
BIT ERROR (dB)
1
0.5 - 4, 16 dB
31.5 dB
1
31.5 dB
16 dB
0
-1
8 dB
0.5-4 dB
-2
0
0.5
1
1.5
2
2.5
3
3.5
4
FREQUENCY (GHz)
FREQUENCY (GHz)
Bit Error vs. Frequency without
AC Ground Caps
(Only Major States are Shown)
3
2.5
2
1.5
BIT ERROR (dB)
0.5 - 4 dB
8 - 31.5 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
FREQUENCY (GHz)
3
For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824
Phone: 978-250-3343
Fax: 978-250-3373
Order On-line at www.hittite.com
Application Support: Phone: 978-250-3343 or apps@hittite.com
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