0.5dB LSB GaAs MMIC 6-Bit Digital Attenuator, DC - 13 GHz

The HMC424ACHIPS is a broadband, 6-bit, gallium arsenide (GaAs), digital attenuator monolithic microwave integrated circuit (MMIC) chip with a 31.5 dB attenuation control range in 0.5 dB steps.

The HMC424ACHIPS offers excellent attenuation accuracy of ±(0.2 dB + 3% of attenuation state) and high input linearity over the specified frequency range from 0.1 GHz to 13.0 GHz with a typical insertion loss of ≤4.2 dB. The attenuator bit values are 0.5 dB (LSB), 1 dB, 2 dB, 4 dB, 8 dB, and 16 dB for a total attenuation of 31.5 dB with a ±0.5 dB of typical step error.

The device allows a userto program the attenuation state via six parallel control inputs toggled between 0 V and VEE.

The HMC424ACHIPS operates with a single negative supply voltage from −3 V to −5 V, and requires an external driver to interface with a CMOS/transistor to transistor logic (TTL) interface.

The HMC424ACHIPS comes in a RoHS compliant, 9-pad bare die.

Applications

* Cellular infrastructure

* Microwave radios and very small aperture terminals (VSATs)

* Test equipment and sensors

* Intermediate frequency (IF) and RF designs

* Military and space

* Attenuation range: 0.5 dB (LSB) steps to 31.5 dB

* ±0.5 dB typical step error

* Low insertion loss: 2.8 dB typical at 4.0 GHz

* High linearity at VEE = −5 V

* Input P0.1dB: 25 dBm typical

* Input IP3: 45 dBm typical