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Software & CAD

HMC629LP4E

January 17, 2011
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The HMC629LP4E is a 3 dB LSB GaAs MMIC 4-Bit digital attenuator that provides an extremely wide dynamic range of 45 dB and excellent input/output return loss of 17 dB. In addition to its low insertion loss of 2.5 dB, this versatile digital attenuator includes a dual mode control interface that accepts either a three wire serial input or a 4 bit parallel word. The CMOS/TLL compatible HMC629LP4E also features a user selectable power up state and a serial output port for cascading other Hittite serial controlled components. Capable of operating from a single +3V or +5V supply, this digital attenuator also achieves near DC operation making it suitable for a wide variety of RF and IF applications.

The HMC629LP4E is conveniently housed in a 4x4 mm RoHS compliant QFN leadless package, requires no external matching components and is specified for operation over -40°C to +85°C.

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