analog signal processing Analog signal processing 1 Differential amplifiers 1 Differential difference amplifier 1 Differential difference transconductance amplifier 1 Filter-based 1 ITS applications 1 Mixed mode 1 Mixed-mode filter 1 Mode filters 1 Quality control 1 Semiconductor device manufacture 1 Signal processing 1 Topology 1 Transconductance 1 Transconductance amplifier 1 Transfer functions 1 Universal filter 1 automation control 1 differential difference transconductance amplifier 1 minimal DC offset 1 mixed-mode filter 1 self-balancing power amplifier 1 surface-to-air missile system 1 universal filter 1