UVD50SC Microchip

UVD50SC Datasheet CENTELLAX DC to 50 GHz MMIC Low Power Voltage Controlled Attenuator Description The UVD50SC is a low-power high-attenua- tion DC-50 GHz PHEMT FET attenuator. Features The performance of the device is controlled Wideband operation: DC to 50 GHz by two bias voltages, V and V . The series shunt Low Insertion Loss (<5 dB) bias voltages control the match and attenua- tion of the device when varied between -1V Good Input/Output Match and +0.5V DC. Please refer to the tables of High Attenuation (max. 27 dB) recommended bias settings optimized for flat Very flat Attenuation insertion loss and flat attenuation for addi- Size: 1640 x 920 m tional information. Application The UVD50SC MMIC voltage controlled attenuator is ideal for high frequency and broadband appli- cations in test equipment, commercial and military systems. The attenuator is especially suited for applications needing a large amount of adjustable attenuation and fast attenuation control from DC to millimeter frequencies. The device is also useful as a general purpose building block in communi- cations systems. Key Specifications Zo=50 W Parameter Description Minimum Typical Maximum Attenuation (dB) DC to 50 GHz 0 27 Flatness (dB) DC to 50 GHz 1.0 Insertion Loss (dB) DC to 50 GHz 5 35 S11 (dB) DC to 50 GHz -12 -10 S22 (dB) DC to 50 GHz -12 -10 P (dBm) 1dB Gain Compression 6 -1dB 0 to 15dB Attenuation CENTELLAX Web: Optimized for Flat Attenuation (Typical) V (V) V (V) Att. (dB)* series shunt -0.637 0.500 30 -0.600 0.500 28 -0.575 0.062 26 -0.555 -0.142 24 -0.539 -0.252 22 -0.527 -0.334 20 -0.509 -0.375 18 -0.478 -0.425 15.5 -0.463 -0.450 14 -0.512 -0.506 12 -0.505 -0.534 10 -0.450 -0.550 8 -0.288 -0.562 6 0.250 -0.588 4 -0.250 -0.650 2 0.500 -1.000 0 Figure 1: Typical on wafer measured performance. Optimized for Flat Insertion Loss (Typical) V (V) V (V) Loss (dB)* series shunt -0.688 0.500 35.5 -0.637 0.500 33.5 -0.600 0.450 31.6 -0.600 -0.150 29.8 -0.584 -0.255 27.7 -0.567 -0.315 25.7 -0.553 -0.364 23.7 -0.541 -0.408 21.7 -0.530 -0.446 19.7 -0.550 -0.500 17.6 -0.512 -0.506 15.7 -0.503 -0.539 13.7 -0.450 -0.550 11.8 -0.250 -0.562 9.6 -0.025 -0.592 7.6 0.387 -0.638 5.6 0.500 -1.000 3.6 Figure 2: Typical on wafer measured performance. Figure 3: Typical on wafer measured performance. Figure 4: Typical on wafer measured performance. Note: (*) Midband CENTELLAX Web: