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參數(shù)資料
| 型號： | PTM-84A-20B |
| 英文描述： | 45V 25A Schottky Discrete Diode in a DO-203AA (DO-4) package |
| 中文描述： | 模擬IC |
| 文件頁數(shù)： | 1/2頁 |
| 文件大?。?/td> | 105K |
| 代理商： | PTM-84A-20B |
For further iformatin contact
MERRIMAC / 41 Fairfield Pl., West Caldwell, NJ, 07006 / 973-575-1300 / FAX 973 575-0531
PRINCIPAL SPECIFICATIONS
Calibration
Frequency,
f
c,
MHz
20 to 100
SMA
Model
Number
PTM-84A-**B
BNC
Model
Number
PTB-84A-**B
Usable
Bandwidth
f
c
±
40%
For complete model number replace ** with desired calibration frequency, f
c
in MHz.
GENERAL SPECIFICATIONS
Phase Shift Range:
Least Significant Bit: 1.4°
Most Significant Bit : 180°
Accuracy at, f
c
:
0° to 360° nom. @ f
c
1/2 of LSB typ.
guaranteed monotonic
50
nom.
1.3:1 max.
2.5 dB nom., 4 dB max.
Impedance:
VSWR:
Insertion Loss, I
L
:
I
L
, Variation vs. Cont:
±
0.2 dB @ mid band
Max. Input Power:
Control Input:
@ 2 loads max. per Bit
Logic Sense:
Supply Power:
Settling Time:
Weight, nominal:
Operating Temp:
+10 dBm
8 Bit TTL
Positive
+5 VDC@250 mA max.
4
μ
s max.
10 oz (285 g)
-- 55° to +85°C
General Notes:
1. PTB- & PTM-84A series phase shifters provide up to 360° of phase shift at a
selected calibration frequency in 8 binary increments (255 steps) resulting in 1.4°
resolution. Each step is generated with different cable lengths switched with PIN
diodes. Advantages of the switched-line phase shifter over the digitally controlled
analog type include potential for higher accuracy and smaller value of the Least
Significant Bit (LSB).
2. Phase shifters based on cable switching are inherently stable and well
matched. Phase shift can be set and held very closely in binary increments from
the LSB to the MSB (Most Significant Bit).
3. This series can be calibrated up to 100 MHz and used to 180 MHz while the
related PTM-84B series extends coverage to 500 MHz.
PTB & PTM-84A Series
20 to 100 MHz / 1.4 Phase Resol. / Monotonic / Broadband, Switched Cable Design / BNC or SMA
8-BIT DIGITAL PHASE SHIFTER
Functional Schematic Diagram
24May96
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