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DAT-15R5A-SP Datasheet(PDF) 6 Page - Mini-Circuits

Part No. DAT-15R5A-SP
Description  Digital Step Attenuator
Download  8 Pages
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Maker  MINI [Mini-Circuits]
Homepage  http://www.minicircuits.com
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DAT-15R5A-SP Datasheet(HTML) 6 Page - Mini-Circuits

   
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Digital Step Attenuator
DAT-15R5A-SP+
Page 6 of 8
Mini-Circuits®
www.minicircuits.com P.O. Box 350166, Brooklyn, NY 11235-0003 (718) 934-4500 sales@minicircuits.com
The DAT-15R5A-SP+, uses a common 5-bit serial word format, as shown in
Table 3: 5-Bit attenuator Serial
Programming Register Map.
The second bit B4 corresponds to the 8 dB Step and the last bit B0 corresponds to the 0.5 dB step.
The DAT-15R5A-SP+ always assumes a specifiable attenuation setting on power-up, allowing a known
attenuation state to be established before an initial serial control word is provided.
When the attenuator powers up, the five control bits are set to whatever data is present on the five data
inputs (C0.5 to C8).
This allows any one of the 32 attenuation settings to be specified as the power-up state.
Power-up Control Settings
Table 3. 5-Bit attenuator Serial Programming Register Map
B5
B4
B3
B2
B1
B0
0
C8
C4
C2
C1
C0.5
MSB
(first in)
LSB
(last in)
Note: The stop bit (B5) must always be low to prevent the attenuator from entering an unknown state.


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