This document describes the features and characteristics of the HMC346MS8G GaAs MMIC SMT voltage-variable attenuator, including wide bandwidth, low phase shift, and a 32 dB attenuation range. The product is ideal for DC - 8 GHz applications such as point-to-point radio and VSAT radio.
The HMC346MS8G from Hittite Microwave Corporation is an absorptive GaAs MMIC surface-mount voltage-variable attenuator operating from DC to 8 GHz. It provides a 32 dB attenuation range and uses an on-chip reference attenuator with an external op-amp for single-voltage attenuation control from 0 to -3 V.
The datasheet lists electrical specifications, typical performance curves, absolute maximum ratings, pin descriptions, and an evaluation PCB list of materials. It is intended for DC-8 GHz applications such as point-to-point radio, VSAT radio, AGC circuits, and temperature compensation of multiple gain stages.
| Frequency range | DC - 8 GHz |
|---|---|
| Attenuation range | 27 dB min, 32 dB typical |
| Insertion loss | 1.5 dB typical, 2.5 dB max |
| Return loss | 5 dB min, 10 dB typical |
| Attenuation control voltage | 0 to -3 V |
| RF input power (absolute maximum) | +18 dBm |
| Control voltage range (absolute maximum) | +1.0 to -5.0 Vdc |
| Operating temperature | -40 to +85 °C |
| Storage temperature | -65 to +150 °C |
| Package | 8 lead surface-mount |
It operates from DC to 8 GHz.
The attenuation range is 27 dB minimum and 32 dB typical.
The control input ranges from 0 V for minimum attenuation to -2.5 V for maximum attenuation.
RF input power is +18 dBm maximum, and the control voltage range is +1.0 to -5.0 Vdc.