BE & BE
M
TM-2A Series
BIPHASEMO
DULATO S
R
2 to 2000 MHz / ECL Input / Uses -5.2 Volt Power Supply / SMA Connectors
PRINCIPAL SPECIFICATIONS
Model
Number,
Unterminated
BEM-2A-250
BEM-2A-500
Model
Number,
Terminated
BETM-2A-250
BETM-2A-500
Frequency
Range,
MHz
2 – 500
10 – 500
500 – 1000
Insertion
Loss, dB,
Max. Typ.
3.5
3
4
6
2.5
2
3
5
Amplitude
Balance, dB,
Max. Typ.
0.3
0.3
0.5
0.75
0.10
0.20
0.20
0.25
Phase
Carrier
Weight
Balance
Suppression oz (g),
Max. Typ.
Typ.
Nom.
±4°
±3°
±4°
±5°
±2°
±1°
±2°
±2°
– 40 dBc
– 40 dBc
– 35 dBc
– 30 dBc
1.5 (42)
1.5 (42)
1.5 (42)
BEM-2A-1500 BETM-2A-1500 1000 – 2000
Package Outline
GENERAL SPECIFICATIONS
Impedance:
5
RF Input Level:
VSWR:
Switching Speed:
Data Signal Levels:
Power Supplies:
Operating Temp:
0
Ω
nom.
– 3 dBm max.
2.0:1 max.
5 nS typ.
(50% Control to 90% RF)
ECL compatible
(terminated or unterminated)
– 5.2 VDC
(@ 40 mA nom.)
– 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
F further inform
or
ation contact
MERRIMAC / 41 Fairfield Pl., West Caldwell, NJ, 07006 /
973-575-1300 / FAX 973-575-0531
MERRIMAC [ MERRIMAC INDUSTRIES, INC. ]
