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ADA4254ACPZ-R7 データシート(PDF) 8 Page - Analog Devices

部品番号 ADA4254ACPZ-R7
部品情報  Zero Drift, High Voltage, Low Power, Programmable Gain Instrumentation Amplifier
PDF  59 Pages
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メーカー  AD [Analog Devices]
ホームページ  http://www.analog.com
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ADA4254ACPZ-R7 データシート(HTML) 8 Page - Analog Devices

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ADA4254
Data Sheet
Rev. B | Page 8 of 59
TIMING SPECIFICATIONS
VDDH = 28 V, VSSH = −28 V, AVDD = 5 V, AVSS = 0 V, DVDD = 3.3 V, DVSS = 0 V, VOCM = AVDD/2 V.
Table 2. Digital Values and SPI Timing Specifications
Parameter
Test Conditions/Comments
Min
Typ
Max
Unit
Maximum Clock Rate (SCLK)
5
MHz
Minimum Pulse Width (SCLK)
High
tPWH
75
ns
Low
tPWL
75
ns
SDI/SDO to SCLK Setup Time
tDS
10
ns
SDI/SDO to SCLK Hold Time
tDH
10
ns
Data Valid, SDO to SCLK
tDV
50
ns
Setup Time, CS to SCLK
tD
CS
30
ns
Timing Diagrams
R/W A6 A5A4 A3
A2 A1A0 D7N D6N D5N
D00
D10
D20
D30
D7N D6N D5N
D00
D10
D20
D30
INSTRUCTION CYCLE
DATA TRANSFER CYCLE
CS
SCLK
SDIO
SDO
Figure 2. SPI Timing Diagram, MSB First
SCLK
SDI
CS
INSTRUCTION BIT 6
INSTRUCTION BIT 7
tDCS
tDS
tDH
tPWH
tPWL
tSCLK
Figure 3. SPI Register Write Timing Diagram
SCLK
SDI,
SDO
CS
DATA BITn–1
DATA BIT n
tDV
Figure 4. SPI Register Read Timing Diagram



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