The AD600ARZ is a dual-channel variable gain amplifier from Analog Devices' X-AMP series, packaged in a 16-lead SOIC (7.50 mm wide body). It is designed for applications requiring precise, wide-range gain control over a 35 MHz bandwidth. Typical deployment includes ultrasound front-end signal conditioning, radar IF strips, spectrum analyzer gain stages, and any receiver chain where an AGC loop must adjust gain with minimal distortion.
The 35 MHz -3 dB bandwidth sets the usable small-signal frequency range for the gain block. For a 10 MHz carrier, you have roughly 9 dB of gain flatness margin before the rolloff becomes significant. The 275 V/µs slew rate ensures that large output swings — up to the ±50 mA output current capability — do not slew-limit below about 5 MHz full-scale, keeping harmonic distortion in check for moderate-level IF signals. Together these specs place the AD600ARZ in the class of wideband VGAs that can handle both narrowband and moderate-bandwidth baseband signals without needing an external post-amplifier.
Supply range and current budget
The supply span is 9.5 V to 10.5 V, essentially a single 10 V rail (±5 V split supply works too). Each channel draws 11 mA quiescent, so a dual-channel design consumes 22 mA plus output load current. With 50 mA per channel output drive, total supply current can reach 122 mA under full output swing — worth checking the regulator's thermal budget if both channels drive heavy loads continuously.
It is ROHS3 compliant. The AD8056ARMZ offers 300 MHz bandwidth and 1400 V/µs slew rate in a dual voltage-feedback topology, but its 8 V supply and different pinout make it a different design fit.