a FEATURES IF Subsystem Bandpass ⌺⌬ Modulator .
Analog Devices
AD6140 - Bandpass IF Subsystem
a FEATURES IF Subsystem Bandpass ⌺⌬ Modulator Variable-Gain Preamplifier with 13 dB of AGC Range Mixer AGC Detector Op Amp for LNA Biasing ECL-to-CMOS.