Diode Variable Attenuator which utilizes an integrated 90
degree 3dB hybrid with a pair of Silicon PIN Diodes
to perform the required attenuation function as
Voltage (Current) is applied. This device operates
from 0 to 1.5 Volts at 260 uA typical control current
for maximum attenuation. The user can add external
biasing resistors to the bias ports for higher voltage
requirements as required.
M/A-COM’s MA4VAT2000-1277T PIN Diode
Variable Attenuator is designed for AGC Circuit
Applications requiring:
Lower Insertion Loss
Lower distortion through attenuation
Larger dynamic range for wide spread
spectrum applications
Function
GND
GND
GND
GND
GND
RF2
GND
GND
PIN
9
10
11
12
13
14
15
16
Function
DC2
GND
GND
DC1
GND
GND
RF1
GND
Center Paddle is RF and D.C. Ground
RF Input/Output Ports are Functionally Symmetrical
Absolute Maximum Ratings
1,2
Parameter
Operating Temperature
Storage Temperature
Junction Temperature
RF C.W. Incident Power
Reversed Current @ -30 V
Control Current
Maximum Ratings
-40 °C to +85 °C
-65 °C to +150 °C
+175 °C
+33 dBm C.W.
l -50nA l
50mA per Diode
1. All the above are at Room Temperature except as noted
2. Exceeding the above Limits may cause permanent damage
1
M/A-COM Technology Solutions Inc. (MACOM) and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice.
Visit
www.macom.com
for additional data sheets and product information.
For further information and support please visit:
https://www.macom.com/support
MA4VAT2000-1277T
HMIC PIN Diode Variable Attenuator
1.70 - 2.20 GHz
Electrical Specifications @ +25 °C
Parameter
No DC Bias Low Loss State
Insertion Loss
Input Return Loss
Output Return Loss
P1dB
IIP3
Control Voltage
DC Bias RF Attenuation State
Maximum Attenuation
Input Return Loss @ Max Attenuation
Output Return Loss @ Max Attenuation
IIP3
Control Voltage @ Max Attenuation
1.70 GHz – 2.20 GHz
dB
dB
dB
dBm
V
23
17
17
15
-
25
20
20
21
1.50V @ 260uA
-
-
-
-
-
1.70 GHz – 2.20 GHz
dB
dB
dB
dBm
dBm
V
-
11
11
30
37
-
1.2
16
16
33
40
0V @ 0uA
1.4
-
-
-
-
-
Rev. V3
Frequency Band
Unit
Min
Typ
Max
Typical RF Performance Over Industry Designated RF Frequency Bands
Band
Freq
(MHz)
DCS
RX
TX
1710-1785
1805-1880
3,4
I. Loss
(dB)
1.2
1.2
Att.
(dB)
23
23
R. Loss
(dB)
13
13
IIP3
(dBm)
40
40
Phase
-Relative-
(Degree)
-20º
PCS
RX
TX
1850-1910
1930-1990
1.2
1.4
23
23
13
13
40
40
-20º
UMTS
WCDMA/CDMA
RX
TX
1920-1980
2110-2170
1.4
1.5
23
23
11
11
40
40
-25º
TD-S-CDMA
-
2010-2025
1.4
23
11
40
-25º
SCDMA
-
1800-2200
1.8
23
11
40
-25º
3. All are typical values only.
4. Relative phase is the measured Insertion Phase Difference between Insertion Loss and the 20dB Attenuation State.
(Please refer to the plots below)
2
M/A-COM Technology Solutions Inc. (MACOM) and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice.
Visit
www.macom.com
for additional data sheets and product information.
For further information and support please visit:
https://www.macom.com/support
MA4VAT2000-1277T
HMIC PIN Diode Variable Attenuator
1.70 - 2.20 GHz
Plots of Typical RF Characteristics @ + 25 °C
Typical Insertion Loss & Attenuation Plot
Typical Insertion Loss & Attenuation for MA4VAT2000-1277
0
-5
Rev. V3
Typical Attenuation Vs Voltage Plot (@ 1950 MHz)
Typical Attenuation VS Voltage For MA4VAT2000-1277
30
25
Attenuation (dB)
-10
-15
-20
-25
-30
1.20
1.30
1.40
1.50
1.60
1.70
1.80
1.90
2.00
2.10
2.20
2.30
2.40
2.50
Attenuation (dB)
20
15
10
5
0
0
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
Frequency (G
Hz)
0V/0mA
0.70V/37uA
0.90V/86uA
1.11V/143uA
1.30V/190uA
1.40V/230uA
1.50V/260uA
Voltage Applied (V)
Typical Return Loss @ All Attenuation Levels Plot
Typical R
eturn Losses for MA4V
AT2000-1277
0
-5
Typical IIP3 Vs Attenuation Plot
Typical IP V Attenuation for MA4V
3 S
AT2000-1277
60
50
40
eturn Loss (dB)
R
-10
)
3
IP (dBm
1.30
1.40
1.50
1.60
1.70
1.80
1.90
2.00
2.10
2.20
2.30
2.40
2.50
-15
-20
-25
-30
-35
1.20
30
20
10
0
0
5
10
15
20
25
Frequency (G
Hz)
0V/0uA
0.70V/37uA
0.90V/86uA
1.11V/143uA
1.30V/190uA
1.40V/230uA
1.50V/260uA
Attenuation (dB)
Typical Relative Phase Shift Per Attenuation
(Voltage) Plot
Typical R
elative P
hase Shift vs Frequency per V
oltage (Attenuation) for
MA4V
AT2000-1277
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
1.20
1.30
1.40
1.50
1.60
1.70
1.80
1.90
2.00
2.10
2.20
2.30
2.40
2.50
elative Phase Shift (degree)
R
For Reference ONLY:
Low Loss
5 dB Attenuation
10 dB Attenuation
15 dB Attenuation
20 dB Attenuation
25 dB Attenuation
=
=
=
=
=
=
0V, @0uA
0.90V, @86uA
1.11V, @143uA
1.30V, @190uA
1.40V, @230uA
1.50V, @260uA
Frequency (G
Hz)
0V/0mA
0.70V/37uA
0.90V/86uA
1.11V/143uA
1.30V/190uA
1.40V/230uA
1.50V/260uA
3
M/A-COM Technology Solutions Inc. (MACOM) and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice.
Visit
www.macom.com
for additional data sheets and product information.
For further information and support please visit:
https://www.macom.com/support
MA4VAT2000-1277T
HMIC PIN Diode Variable Attenuator
1.70 - 2.20 GHz
Package PIN Designation, External Components, and Equivalent Circuit
R in/out
F
C
block
Rev. V3
C
=10pF
block
C
= 10pF
bias
R
external = 0 -O s
hm
C
bias
R
bias
INP T
U
C
ontrol C
urrent
C
bias
G
ND
P
addle
C
block
R out/in
F
Ordering Information
Part Number
MA4VAT2000-1277T
Package
Tape and Reel
4
M/A-COM Technology Solutions Inc. (MACOM) and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice.
Visit
www.macom.com
for additional data sheets and product information.
For further information and support please visit:
https://www.macom.com/support
MA4VAT2000-1277T
HMIC PIN Diode Variable Attenuator
1.70 - 2.20 GHz
Rev. V3
M/A-COM Technology Solutions Inc. All rights reserved.
Information in this document is provided in connection with M/A-COM Technology Solutions Inc ("MACOM")
products. These materials are provided by MACOM as a service to its customers and may be used for
informational purposes only. Except as provided in MACOM's Terms and Conditions of Sale for such products or
in any separate agreement related to this document, MACOM assumes no liability whatsoever. MACOM
assumes no responsibility for errors or omissions in these materials. MACOM may make changes to
specifications and product descriptions at any time, without notice. MACOM makes no commitment to update
the information and shall have no responsibility whatsoever for conflicts or incompatibilities arising from future
changes to its specifications and product descriptions. No license, express or implied, by estoppels or otherwise,
to any intellectual property rights is granted by this document.
THESE MATERIALS ARE PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR
IMPLIED, RELATING TO SALE AND/OR USE OF MACOM PRODUCTS INCLUDING LIABILITY OR
WARRANTIES RELATING TO FITNESS FOR A PARTICULAR PURPOSE, CONSEQUENTIAL OR
INCIDENTAL DAMAGES, MERCHANTABILITY, OR INFRINGEMENT OF ANY PATENT, COPYRIGHT OR
OTHER INTELLECTUAL PROPERTY RIGHT. MACOM FURTHER DOES NOT WARRANT THE ACCURACY
OR COMPLETENESS OF THE INFORMATION, TEXT, GRAPHICS OR OTHER ITEMS CONTAINED WITHIN
THESE MATERIALS. MACOM SHALL NOT BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL, OR
CONSEQUENTIAL DAMAGES, INCLUDING WITHOUT LIMITATION, LOST REVENUES OR LOST PROFITS,
WHICH MAY RESULT FROM THE USE OF THESE MATERIALS.
MACOM products are not intended for use in medical, lifesaving or life sustaining applications. MACOM
customers using or selling MACOM products for use in such applications do so at their own risk and agree to
fully indemnify MACOM for any damages resulting from such improper use or sale.
5
M/A-COM Technology Solutions Inc. (MACOM) and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice.
Visit
www.macom.com
for additional data sheets and product information.
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