Si tratta di un eccellente componente della Analog Device caratterizzato da bassa distorsione ( +24 dBm Third Order Intercept (IP3) e +10 dBm 1 dB Compression Point ). Ecco le caratteristiche dal datasheet:

Doubly Balanced Mixer
Low Distortion
+24 dBm Third Order Intercept (IP3)
+10 dBm 1 dB Compression Point
Low LO Drive Required: –10 dBm
Bandwidth
500 MHz RF and LO Input Bandwidths
250 MHz Differential Current IF Output
DC to >200 MHz Single-Ended Voltage IF Output
Single- or Dual-Supply Operation
DC Coupled Using Dual Supplies
All Ports May Be DC Coupled
No Lower Frequency Limit—Operation to DC
User-Programmable Power Consumption

Datasheet scaricabile qui.

Ecco alcune foto della realizzazione:

Mixer con AD831

Mixer con AD831