UM2308

580 Pleasant St. Watertown, MA 02472 PH: (617) 926-0404 FAX: (617) 924-1235 UM2300 SERIES Features LF band (100 KHz) PIN Long Lifetime (80 µs typ.) High Power (1 KW CW) High Isolation (35 dB) Low Loss (0.2 dB) Very Low Distortion (IP3 = > 60 dBm) Voltage Ratings to 1000 V PIN DIODE SWITCH Description TYPICAL CAPACITANCE vs REVERSE VOLTAGE UM2300 Series PIN diodes are designed for transmit / receive switch and attenuator application in LF band ( 100 KHz ) and above. As series configured switches, these long lifetime (80 µS typ) diodes can control up to 2.5 KW CW in a 50 ohm system. In MF band, insertion loss is less than 0.2 dB and isolation is greater than 35 dB (‘ off ’ state). The UM2300 series offers the lowest distortion performance in both transmit & receive modes. Less than 10 mA forward bias is required to obtain an IP3 of 60 dBm at 150 KHz with 1 watt per tone. The forward biased resistance/reactance vs. frequency characteristics are flat down to 10 KHz. Capacitance vs. reverse bias voltage characteristic is flat down to 1 MHz. In attenuator configurations, the UM2300 produces extremely low distortion at low values of attenuator control current, & very low insertion loss ( 0.2 dB) in the ‘0 dB ’attenuator state. 130 120 110 100 90 200 KHz 100 KHz Ct (pF) 80 70 60 50 40 30 20 10 0 0 4 MHz 1 MHz 400 KHz 2 MHz 20 40 60 80 100 120 140 160 180 200 Vr (VOLTS) Voltage Ratings (25° C) Reverse Voltage ( VR ) @ IR = 10 µA 100 200 400 600 800 1...