HTOOL DA08: digital adjustable RF attenuator, 9KHz–8GHz, 0.5dB step, OLED display.
On July 7, 2026, HTOOL launched the DA08 digital adjustable RF attenuator based on the ARW637 RF chip, with mechanical knob and real-time OLED display.
ARW637 architecture: 0.5dB fine step; ≤±0.2dB (≤3GHz), ≤±0.25dB (>3GHz); 15dB return loss, 31dBm P0.1dB compression, 50dBm IIP3.
Knob + OLED: clockwise increases attenuation, 0.5dB per step; Type-C 3.6–15V, ≤0.1W power, ≥5h runtime.
Design: 33×50mm, -40°C to 105°C, SMA 50Ω; 26dBm safe input limit.
