5 interface hardware specifications, Research & development – INFICON Spot CDS550D User Manual
Page 5
Research & Development
SPOT CDS500D & CDS550D OEM Sensor SPI-Interface Specification_V1.1
Page 5 of 14
Christian Berg, T based on Felix Mullis, TL
Created 11/10/2014 2:36:00 PM
2.5 Interface Hardware Specifications
2.5.1 Power Supply
Signal
Description
MIN TYP
MAX
UNIT
Vcc
Supply voltage
4.75
5.0
5.25
VDC
Ripple
Supply voltage ripple and noise (BW = 20MHz)
50
mVpk-pk
Icc
Supply current
1
5
mA
2.5.2 Recommended operating conditions
The input lines “Clk”, “SS/” and “MOSI” and the output line “MISO” are buffered with a SN74ABT125.
The output line “RDY/” is driven by a SN74AHCT1G125
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