AV850M2-00 Datasheet, PDF (1/2 Pages) Alpha Industries – 18-40 GHz GaAs MMIC Voltage Variable Attenuator

18–40 GHz GaAs MMIC
Voltage Variable Attenuator
AV850M2-00
Features
s Dual Voltage Control
Chip Outline
s 35 dB Attenuation Range
1.050
s Triple Gate 0.25 µm MESFET Design
0.911
s +10 dBm P_{1 dB} All Attenuation States
s 100% On-Wafer RF and DC Testing
s 100% Visual Inspection to MIL-STD-883
MT 2010
0.314
Description
Alpha’s AV850M2-00 MMIC voltage variable attenuator
is a standard TEE configuration incorporating triple-gate
0.25 µm power MESFETs. The attenuator has a typical
insertion loss of 3 dB over the 18–40 GHz band. The
attenuation range is 35 dB while typical I/P and O/P return
loss is better than 6 dB. The chip uses Alpha’s proven 0.25
µm 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. This chip
incorporates triple-gate FETs which results in less
attenuation variation over temperature as well as better
power handling performance at all attenuation states. All
chips are screened for insertion loss, full attenuation and
I/P and O/P match over the 18–40 GHz band for
guaranteed performance.
0.000
0.097
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°C to +90°C
-65°C to +150°C
-7 V_DC
30 dBm
175°C
Electrical Specifications at 25°C
Parameter
Condition
Symbol
Min. Typ.² Max. Unit
Maximum Attenuation
V_C = -1 V, V_C2 = -0.25 V
F = 18–35 GHz
ISO
20
30
dB
Minimum Attenuation
Input/Output Return Loss
V_C = -1 V, V_C2 = -3.25 V
F = 18–35 GHz
I_L
F = 18–35 GHz
RL
2
3
dB
-10
-6
dB
Maximum Attenuation
V_C = 0 V, V_C2 = -0.8 V
F = 35–40 GHz
ISO
20
35
dB
Minimum Attenuation
Input/Output Return Loss
V_C = 0 V, V_C2 = -3.25 V
F = 35–40 GHz
I_L
F = 35–40 GHz
RL
3
4
dB
-10
-5
dB
Input Power at 1 dB Compression
(For All Attenuation Levels)¹
Thermal Resistance
1. Not measured on a 100% basis.
P_{1 dB}
10
dBm
Θ_JC
101
°C/W
2. Typical represents the median parameter value across the specified
frequency range for the median chip.
Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email [e-mail] • www.alphaind.com
1
Specifications subject to change without notice. 9/00A