HMC624ALP4E

HMC624A is a 6-bit digital attenuator with a 31.5dB attenuation control range in 0.5dB steps. It offers excellent attenuation accuracy and high input linearity over the specified frequency range from 100MHz to 6.0GHz. However, this digital attenuator features external ac grounding capacitors to extend the operation below 100MHz. It is integrated with two dies: a CMOS driver and a gallium arsenide (GaAs) RF attenuator. The CMOS driver provides both serial and parallel control of the RF attenuator. The device also features a user-selectable power-up state and a serial output port for cascading other serial-controlled components. Application includes cellular infrastructure, microwave radios and very small aperture terminals (VSATs), test equipment and sensors, and intermediate frequency (IF) and radio frequency (RF) designs.

• Excellent attenuation accuracy, high linearity
• CMOS-/TTL-compatible control
• Frequency range from 0.1 to 6.0GHz (VDD=3V to 5V, (VCTL)=0V or VDD, TCASE=25°C)
• Typical insertion loss is 1.6dB (0.1GHz to 3GHz, VDD=3V to 5V, (VCTL)=0V or VDD, TCASE=25°C)
• Typical return loss (ATTIN and ATTOUT) is 15dB (All attenuation states, 0.1 to 6.0GHz,TCASE=25°C)
• Typical relative phase is 25degree (100MHz to 3GHz, VDD=3 to 5V, (VCTL)=0V or VDD, TCASE=25°C)
• Typ rise and fall time is 60ns (10% to 90% of RF output, VDD=3 to 5V, (VCTL)=0V or VDD, TCASE=25°C)
• Typical 0.1dB compression is 33dBm (VDD=3V, VDD=3V to 5V, (VCTL)=0V or VDD, TCASE=25°C)
• Typical third-order intercept is 55dBm (VDD=3V to 5V, 10dBm per tone, 1MHz spacing)
• 24-lead LFCSP package, operating temperature range from -40°C to +85°C

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