Advanced RF control: This digital programmable attenuator provides precise signal modulation from DC to 4 GHz, suitable for RF applications Digital programmable attenuators are used to adjust the signal level in communication systems. This module uses digital programmable technology to achieve signal level adjustment within the DC-4G broadband frequency range Using parallel control, the control interface is reserved, and can be connected to an external mechanical switch or external MCU control. The attenuation step is 0.5dB, achieving 0.5-31.5dB broadband attenuation adjustment Using CNC shell packaging, it has good electromagnetic shielding performance and can be cascaded with other modules Wide range of uses: very suitable for wireless communication testing, signal integrity analysis and RF system calibration, which can improve project reliability and efficiency Working frequency: DC-4GHz Control mode: parallel (support single chip parallel control) Insertion loss: 1.5dB (typical value) Attenuation range: 0.5-31.5dB Maximum input power: 27dBm (500mw) Power supply: +5V single power supply Control interface output: through-hole capacitor Impedance: 50Ω Input and output interface: SMA Control rules: -D6: set 111111 attenuation 0dB -D6: set 111110 attenuation 0.5dB -D6: set 111101 attenuation 1dB -D6: set 111011 attenuation 2dB -D6: set 110111 attenuation 4dB -D6: set 101111 attenuation 8dB -D6: set 011111 Attenuation 16dB -D6: Set to 000000 Attenuation 31.5dB Voltage control protocol: Low level 0: 0 to +0.6V (ground is also possible) High level 1: +2.5V to +5V Colour:As Shown Material:CNC Due to different batches, there may be differences in product appearance and printed text, which not affect use Package Contents: 1 * RF Programmable Attenuator Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.