18鈥?0 GHz GaAs MMIC
Voltage Variable Attenuator
AV850M1-00
Features
I
Single Voltage Control
I
40 dB Attenuation Range
I
Balanced 0.25
碌m
MESFET
Non-Reflective Design
I
100% On-Wafer RF and DC Testing
I
100% Visual Inspection to MIL-STD-883
MT 2010
0.320
Chip Outline
1.400
1.305
1.080
0.365
Description
Alpha鈥檚 AV850M1-00 MMIC voltage variable attenuator is
a balanced configuration incorporating Lange couplers at
input and output. The attenuator has a typical insertion loss
of 2.5 dB over the 18鈥?0 GHz band with a worst-case
insertion loss of 3.5 dB across the full 18鈥?0 GHz band.
The attenuation range is 35 dB over the full 18鈥?0 GHz
band while typical I/P and O/P return loss is better than
13 dB for all attenuation states. The chip uses Alpha鈥檚
proven 0.25
碌m
MESFET technology and is based upon
MBE layers and electron beam lithography for the highest
uniformity and repeatability. The MMICs employ surface
passivation to ensure a rugged, reliable part with
through-substrate via holes and gold-based backside
metallization to facilitate a conductive epoxy die attach
process. All chips are screened for insertion loss, full
attenuation and I/P and O/P match over the 18鈥?0 GHz
band for guaranteed performance.
0.095
0.000
0.000
1.634
2.000
Dimensions indicated in mm.
All DC (V) pads are 0.1 x 0.1 mm and RF In, Out pads are 0.07 mm wide.
Chip thickness = 0.1 mm.
Absolute Maximum Ratings
Characteristic
Operating Temperature (T
C
)
Storage Temperature (T
ST
)
Control Voltage (V
C
)
Power In (P
IN
)
Junction Temperature (T
J
)
Value
-55擄C to +90擄C
-65擄C to +150擄C
-7 V
DC
30 dBm
175擄C
Electrical Specifications at 25擄C (Frequency = 18, 24, 31, 38, 43, 50 GHz)
Parameter
Maximum Attenuation
Minimum Attenuation
Input Return Loss
Output Return Loss
Input Power at 1 dB Gain Compression
(For All Attenuation Levels)
1
1. Not measured on a 100% basis.
2. Typical represents the median parameter value across the specified
frequency range for the median chip.
Condition
V
C
= 0 V
V
C
= -5 V
At Min. and Max. Attenuation
At Min. and Max. Attenuation
Symbol
ISO
I
L
RL
I
RL
O
P
1 dB
Min.
35
Typ.
2
45
2.5
-20
-20
0
Max.
3.5
-12.5
-12.5
Unit
dB
dB
dB
dB
dBm
Alpha Industries, Inc.
[781] 935-5150
鈥?/div>
Fax
[617] 824-4579
鈥?/div>
Email
sales@alphaind.com
鈥?/div>
www.alphaind.com
Specifications subject to change without notice. 2/00A
1
1
2
