MD-108 Double-Balanced Mixer, 5 - 500 MHz Features V 3.00 RH-3 Low Cost Conversion Loss: 7 dB Typical Impedance: 50 Ohms Nominal Maximum Input Power: 400 mW max. @ 25°C, Derated to 85°C @ 3.2 mW/°C n IF Port Current: 50 mA Max. n MIL-STD-883 Screening Available n n n n Description Transformers convert the LO and RF paths to balanced lines connecting to a low barrier, Schottky diode ring quad. These transformers help provide excellent isolation between ports. Conversion Loss is low. The direct connection of the IF port to the diode quad allows these mixers to be used as phase detectors and bi-phase modulators. Pin Configuration Pin No. Function Pin No. Function 1 LO 5 LO 2 GND 6 GND 3* IF 7* IF 4 GND 8 RF * P3 and P7 are connected together to make IF port. Electrical Specifications1: TA = -55°C to +85°C Parameter Test Conditions Frequency Units Min Typ Max Frequency Range RF, LO Ports IF Port 5 - 500 DC - 500 MHz MHz — — — — — — 5 - 150 MHz 150 - 500 MHz dB dB — — — — 7.0 9.0 5 - 150 MHz 150 - 500 MHz 5 - 150 MHz 150 - 500 MHz 5 - 150 MHz 150 - 500 MHz dB dB dB dB dB dB 40 35 35 25 25 20 — — — — — — — — — — — — — — — — — Conversion Loss Isolation LO to RF LO to IF RF to IF DC Polarity Negative, if LO input at Pin 1 DC Offset RF Input 1 dB Compression 1 dB Desensitization SSB Noise Figure Within 1 dB of Conversion Loss Max. Typical Two Tone IM Ratio With –10 dBm input, each input 25 MHz and 35 MHz IF mV — <1 — dBm dBm — — +2.5 0 — — — — — — — 100 - 350 MHz 350 - 500 MHz dB dB — — >55 >40 — — 1. All specifications apply when operated at +7 dBm available LO power with 50 ohm source and load impedance. Double-Balanced Mixer, 5 - 500 MHz MD-108 V 3.00 Typical Performance Curves Isolation (Input = +7 dBm) Conversion Loss (LO = +7 dBm, RF = -5 dBm, IF = 5 MHz) L-R Isolation (dB) Conversion Loss (dB) L-X R-X 60 8 7 6 50 40 30 20 5 5 10 20 50 100 200 300 400 500 5 10 20 50 100 200 300 400 500 Frequency (MHz) Frequency (MHz) Conversion Loss vs. LO Power (LO = 200 MHz, RF = 140 MHz @ -10 dBm, IF = 60 MHz) 12 Ordering Information Part Number Package MD-108 PIN RH-3 Loss (dB) 10 8 6 4 -5 0 5 10 15 LO Power (dBm) Specifications subject to change without notice. n North America: Tel. (800) 366-2266 n Asia/Pacific: Tel.+81-44-844-8296, Fax +81-44-844-8298 n Europe: Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020 Visit www.macom.com for additional data sheets and product information. 2