PTM-64A-10B MERRIMAC | Alldatasheet
Document overview
- Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
- PDF pages: 1
Technical content
PTB & PTM-64A Series 6-Bit DIGITAL PHASE SHIFTER 10 to 250 MHz / Low RF Transients / Fast Switching Time / Monotonic Output / BNC or SMA Fo r f u rther infor m at ion contact MERRIMAC / 41 Fairfield Pl., West Caldwell, NJ, 07006 / 973-575-1300 / FAX 973-575-0531 PRINCIPAL SPECIFICATIONS Calibration SMA BNC Frequency Model Model fc, MHz Number Number 10 - 250 PTM-64A-B PTB-64A-B For complete model number replace ** with desired calibration frequency, fc, in MHz GENERAL SPECIFICATIONS Usable Bandwidth: fc ± 2.5% Phase Shift Range:: 0° to 360° nom.@f c Least Significant Bit: 5.6° Most Significant Bit: 180° Accuracy @ f c : 1/2 of LSB typ. ( guaranteed monotonic ) Impedance: 50 Ω nom. VSWR: 1.35:1 max. Insertion Loss, I L : 3 dB nom. IL , Variation vs. Cont: ±0.5 dB @ f c Input Power: +10 dBm max. Control Input: 6 Bit TTL Logic Sense: Positive Supply Power: +5 VDC @ 350 mA nom. +15 VDC @ 100 mA nom Settling Time: 100 ns typ., 250 ns max. Weight, nominal: 10 oz (285 g) Operating Temp: -- 55° to +85°C NOTES: 1. Tolerance on 3 place decimals ± .020(.51) except as noted. 2. Dimensions in inches over millimeters. General Notes: 1. PTM-64A series phase shifters are controlled directly from TTL logic circuits and are available for center frequencies from 10 to 250 MHz. 2. Their lumped element design is inherently narrow band since it utilizes a quadrature hybrid in each switch section. However, this approach provides much smoother phase transitions than a switched cable design since the switching does not take place in the RF signal path. This feature makes the PTM-64A series preferable for applications where minimizing switching transients is important. 3. Accuracy and temperature stability of each phase shift section allows for a resolution of 5.6°, but as total phase shift increases, overall accuracy deteriorates due to cumulative internal reflections. 24May96 Bit 1 (LSB) 2 3 4 5 6 MSB) Phase Shift Increments