HMC425

v01.0402 MICROWAVE CORPORATION HMC425 Features 0.5 dB LSB Steps to 31.5 dB Single Control Line Per Bit +/- 0.5 dB Typical Bit Error Die Size: 0.85 mm x 1.5 mm x 0.1 mm 0.5 dB LSB GaAs MMIC 6-BIT DIGITAL POSITIVE CONTROL ATTENUATOR, 2.4 - 8.0 GHz Typical Applications The HMC425 is ideal for: 2 ATTENUATORS - CHIP Fiber Optics & Broadband Telecom Microwave Radio & VSAT Military Radios, Radar, & ECM Space Applications Functional Diagram General Description The HMC425 die is a broadband 6-bit GaAs IC digital attenuator MMIC chip. Covering 2.4 to 8.0 GHz, the insertion loss is less then 3.5 dB typical. The attenuator bit values are 0.5 (LSB), 1, 2, 4, 8, and 16 dB for a total attenuation of 31.5 dB. Attenuation accuracy is excellent at ± 0.5 dB typical step error with an IIP3 of +40 dBm. Six control voltage inputs, toggled between 0 and +3 to +5V, are used to select each attenuation state. A single Vdd bias of +3 to +5V is required. Electrical Specifications, TA = +25° C, With Vdd = +5V & Vctl = 0/+5V (Unless Otherwise Noted) Parameter Insertion Loss Attenuation Range Return Loss (RF1 & RF2, All Atten. States) Attenuation Accuracy: (Referenced to Insertion Loss) Input Power for 0.1 dB Compression All States Vdd= 5V Vdd= 3V REF - 16.0 dB States 16.5 - 31.5 dB States Frequency (GHz) 2.4 - 6.0 GHz 6.0 - 8.0 GHz 2.4 - 8.0 GHz 2.4 - 8.0 GHz 2.4 - 8.0 GHz 2.4 - 8.0 GHz 12 Min. Typ. 2.7 3.5 31.5 15 Max. 3.2 4.0 Units dB dB dB dB dB dBm dBm dBm dBm ± 0.4 + 4% of Atten. Setti...