0.1 GHz to 6.0 GHz,0.5 dB LSB, 6-Bit,GaAs
Attenuation range: 0.5 dB (LSB) steps to 31.5 dB
Low insertion loss: 1.6 dB at 3 GHz
Excellent attenuation accuracy
Input 0.1dB compression (P0.1dB): 33 dBm typical
Input third-order intercept (IP3): 55 dBm typical
High RF input power handling: 28 dBm
Low phase shift: 25° at 3 GHz
Single-supply operation: 3 V to 5 V
24-lead, 4 mm × 4 mm LFCSP package
ENHANCED PRODUCT FEATURES
Supports defense and aerospace applications (AQEC
Extended industrial temperature range: −55°C to +105°C
Controlled manufacturing baseline
1 assembly/test site
1 fabrication site
Product change notification
Qualification data available upon request
Microwave radios and very small aperture terminals (VSATs)
Test equipment and sensors
Intermediate frequency (IF) and radio frequency (RF) designs
FUNCTIONAL BLOCK DIAGRAM
24 23 22 21 20 19
8 9 10 11 12
The HMC624A-EP is a 6-bit digital attenuator with a 31.5 dB
attenuation control range in 0.5 dB steps.
The HMC624A-EP offers excellent attenuation accuracy and
high input linearity over the specified frequency range from
100 MHz to 6.0 GHz. However, this digital attenuator features
external ac grounding capacitors to extend the operation below
The HMC624A-EP 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
The HMC624A-EP operates with a single positive supply
voltage from 3 V to 5 V and provides a CMOS-/TTL-
compatible control interface.
The HMC624A-EP comes in a RoHS compliant, compact,
4 mm × 4 mm LFCSP package.
Additional application and technical information can be found
in the HMC624A data sheet.
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responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
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