Variable Attenuator which utilizes an integrated 90
degree 3dB hybrid with a pair of Silicon PIN Diodes
to perform the required attenuation function as D.C.
Voltage (Current) is applied.
This device operates from 0 to 1.9 Volts at 1.89 mA
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 MA4VAT904-1061T 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
Symetrical as RF Input/Ouput
Symetrical as RF Input/Ouput
7
8
Absolute Maximum Ratings @ +25 °C
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.
50nA
50 mA per Diode
1. All the above values are at +25 °C, unless otherwise noted.
2. Exceeding these 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
MA4VAT904-1061T
High IIP3 PIN Diode Variable Attenuator
0.8 - 1.0 GHz
Electrical Specifications @ +25 °C
Parameter
No DC Bias RF Parameter
Insertion Loss
Input Return Loss
Output Return Loss
P1dB
Input IP3
Control Voltage
DC Bias RF Parameter
Maximum Attenuation
Input Return Loss @ Max Attenuation
Output Return Loss @ Max Attenuation
Input IP3
Control Voltage @ Max Attenuation
Control Current@ Max Attenuation
Bias = 1.9V
0.80 GHz—1.00 GHz
dB
dB
dB
dBm
V
mA
18.5
15
15
36
-
1.2
24
21
21
39
1.9 V @ 1.89 mA
1.8
3,4
Rev. V4
Frequency Band
Unit
Min
Typ
Max
0.80 GHz—1.00 GHz
dB
dB
dB
dBm
dBm
V
-
11
11
30
45
-
1.0
12
12
-
49
0 V @ OuA
1.2
-
-
-
-
-
-
-
-
-
-
2.4
Typical RF Performance Over Industry Designated RF Frequency Bands
Band
Freq
(MHz)
RX
AMPS
TX
869-894
0.9
22
12
824-849
I. Loss
(dB)
0.9
Att.
(dB)
22
R. Loss
(dB)
12
IIP3
(dBm)
45
Phase
-Relative-
(Degree)
-15°
45
RX
GSM
TX
880-915
925-960
1.2
1.2
20
20
11
11
45
-20°
45
3. All are typical values only.
4. Relative phase is the measured Insertion Phase difference between Insertion Loss and 15 dB Attenuation.
(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
MA4VAT904-1061T
High IIP3 PIN Diode Variable Attenuator
0.8 - 1.0 GHz
Plots of Typical RF Characteristics @ +25 °C
Typical Insertion Loss & Attenuation
Typical Attenuation vs Voltage
MA4V
AT904-1061
Attenuation vs C
ontrol V
oltage
0
-5
Rev. V4
Attenuation (dB)
-10
-15
-20
-25
-30
0
0.5
1
1.5
2
2.5
Bias Voltage (V)
800MHz
900MHz
1000MHz
Typical Return Loss @ All Attenuation Levels
MA4VAT904-1061
Typ In u R rnL ss
ical p t etu o
0
Typical IIP3 vs Attenuation
MA4VAT904-1061
Typical IP3 vs Bias Voltage @
900MHz
(1MHz O
ffset, + 0dBm Pin)
70
-5
60
50
oss
e
R turn L dB)
-10
-15
-20
-25
-30
0.600
0.700
0.800
0.900
1.000
1.100
1.200
IP3 (dBm)
40
30
20
10
0
0.0
0.5
1.0
1.5
2.0
2.5
F que (G z)
re ncy H
0V A
/0m
0.77V
/0.28m
A
0.93V
/0.48m
A
1.27V
/0.93m
A
1.53V
/1.28m
A
1.77V
/1.62m
A
1.89V
/1.80m
A
Bias Voltage (V)
Typical Relative Phase Shift Per Attenuation (Voltage)
MA4V
AT904-1061
R
elative P
hase vs C
ontrol V
oltage
90
70
egree))
elative Phase (D
R
50
30
10
-10
-30
-50
-70
-90
0
0.5
1
1.5
2
2.5
For Reference ONLY:
Insertion Loss
5dB Attenuation
10dB Attenuation
15dB Attenuation
20dB Anttenuation
= 0.00 V @ 0.00 mA
= 0.94 V @ 0.49 mA
= 1.26 V @ 0.93 mA
= 1.50 V @ 1.22 mA
= 1.77V @ 1.60 mA
Bias Voltage (V)
800MHz
900MHz
1000MHz
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
MA4VAT904-1061T
High IIP3 PIN Diode Variable Attenuator
0.8 - 1.0 GHz
Package PIN Designation, External Components, and Equivalent Circuit
Rev. V4
C
ias
b
L
as
bi
R IN U
F /O T
C
lock
b
C n l C rre
o tro u nt
R
ia
bs
C
lock
b
R O T/IN
FU
L
as
bi
C
ias
b
External Bias Components
Rbias= 680 Ohms ( 1.66 V, @1.50 mA )
Lbias= 150 nH
Cbias =100 pF
Cblock =100 pF
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
MA4VAT904-1061T
High IIP3 PIN Diode Variable Attenuator
0.8 - 1.0 GHz
Rev. V4
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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