The F1956 from IDT is a 7-bit digital step attenuator that operates from 1 MHz to 4000 MHz. It has an attenuation range up to 31.75 dB with a resolution of 0.25 dB, a low insertion loss. It settles at an attenuation level in under 500 nsec. The Glitch-Free technology gives it a high linearity with a 61 dBm IP3. The F1956 is available in a compact 5x5 mm Thin QFN 32 pin package.