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參數(shù)資料
| 型號(hào)： | PTM-64A-250B |
| 英文描述： | Intelligent Power Switch 1 Channel Low Side Driver in a TO-220AB Package |
| 中文描述： | 模擬IC |
| 文件頁(yè)數(shù)： | 1/1頁(yè) |
| 文件大小： | 174K |
| 代理商： | PTM-64A-250B |
Package Outline
PTB & PTM-64A Series
10 to 250 MHz / Low RF Transients / Fast Switching Time / Monotonic Output / BNC or SMA
6-Bit DIGITAL PHASE SHIFTER
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
10 - 250
For complete model number replace ** with desired calibration frequency, fc, in MHz
SMA
Model
Number
PTM-64A-**B
BNC
Model
Number
PTB-64A-**B
GENERAL SPECIFICATIONS
Usable Bandwidth:
Phase Shift Range:: 0° to 360° nom.@f
c
Least Significant Bit: 5.6°
Most Significant Bit: 180°
Accuracy @ f
c
:
(
guaranteed monotonic
)
Impedance:
VSWR:
Insertion Loss, I
L
:
I
L
, Variation vs. Cont:
±
0.5 dB @ f
c
Input Power:
Control Input:
Logic Sense:
Supply Power:
f
c
±
2.5%
1/2 of LSB typ.
50
nom.
1.35:1 max.
3 dB nom.
+10 dBm max.
6 Bit TTL
Positive
+5 VDC @ 350 mA nom.
+15 VDC @ 100 mA nom
.
100 ns typ., 250 ns max.
10 oz (285 g)
-- 55° to +85°C
Settling Time:
Weight, nominal:
Operating Temp:
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)
5.5
°
2
3
4
5
6 MSB)
180
°
Phase
11.2
°
22.5
°
45.0
°
90.0
°
Phase Shift Increments
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