BIPHASEMODULATORS BEM & BETM-2A Series 2 to 2000 MHz / ECL Input / Uses -5.2 Volt Power Supply / SMA Connectors PRINCIPAL SPECIFICATIONS Model Number, Unterminated Model Number, Terminated Frequency Range, MHz BEM-2A-250 BETM-2A-250 2 – 500 3.5 2.5 0.3 0.10 ±4° ±2° – 40 dBc 1.5 (42) BEM-2A-500 BETM-2A-500 10 – 500 500 – 1000 3 4 2 3 0.3 0.5 0.20 0.20 ±3° ±4° ±1° ±2° – 40 dBc – 35 dBc 1.5 (42) BEM-2A-1500 BETM-2A-1500 1000 – 2000 6 5 0.75 0.25 ±5° ±2° – 30 dBc 1.5 (42) Package Outline Insertion Loss, dB, Max. Typ. Amplitude Balance, dB, Max. Typ. Phase Carrier Weight Balance Suppression oz (g), Max. Typ. Typ. Nom. GENERAL SPECIFICATIONS Impedance: 5 RF Input Level: VSWR: Switching Speed: 0 Ω nom. – 3 dBm max. 2.0:1 max. 5 nS typ. (50% Control to 90% RF) Data Signal Levels: ECL compatible (terminated or unterminated) Power Supplies: – 5.2 VDC (@ 40 mA nom.) Operating Temp: – 55° to +85°C AVAILABLE OPTIONS Direct (No Driver) Integral TTL Driver: Other frequencies: As BPM series As BTM series Up to 2500 MHz. Consult with factory General Notes: 1. The BEM and BETM-2A series of Biphase Modulators cover the frequency range of 2 to 2000 MHz and can be driven directly by standard ECL using only a – 5.2 V supply. Custom units covering up to 2500 MHz may be obtained. Consult with the factory. 2. The BEM-2A series requires an external 50Ω logic input termination while the BETM-2A series includes an internal 50Ω logic input termination. Comparable TTL versions are available in a similar package or a non-connectorized Meri-Pac or flatpack (see BTF-2A series). Units without integral TTL drivers are available in the BPM-2A series. 3. Merrimac Biphase Modulators cover a variety of frequency bands while providing wide bandwidths suitable for most applications. 4. All units comply with the applicable sections of MIL-M-28837 and may be supplied screened for compliance with additional specifications for military and space applications requiring the highest reliability. 22Feb96 For further information contact MERRIMAC / 41 Fairfield Pl., West Caldwell, NJ, 07006 / 973-575-1300 / FAX 973-575-0531