F197x Digital Step Attenuators (DSAs) Renesas Electronics F197x Digital Step Attenuators (DSAs) are part of the Glitch-Free™ DSAs that are optimized for the demanding requirements of CATV and Satellite systems. These Renesas Electronics DSAs are used in receivers and transmitters to provide gain control. The 6-bit F1975 and 7-bit F1977 step attenuators are optimized for these demanding applications. The silicon design has low insertion loss and distortion (+64dBm IIP3). The device has pinpoint attenuation accuracy. Most importantly, the F197x includes Glitch-Free technology, resulting in low overshoot and ringing during MSB transitions.