AD5554BRS(RevA) Просмотр технического описания (PDF) - Analog Devices
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производитель
AD5554BRS Datasheet PDF : 20 Pages
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AD5554/AD5554
SDI
A1 A0 D15 D14 D13 D12 D11 D10
CLK
CS
LDAC
tCSS
tDS
tDH
tCH
tCL
tPD
SDO
Figure 4. AD5544 Timing Diagram
D1 D0
INPUT
REG
LD
tCSH
tLDS
tLDAC
tLDH
SDI
A1 A0 D13 D12 D11 D10 D09 D08
CLK
CS
tCSS
tDS
tDH
tCH
tCL
LDAC
tPD
SDO
Figure 5. AD5554 Timing Diagram
D1 D0
INPUT
REG
LD
tCSH
tLDS
tLDAC
tLDH
Table 5. AD55441 Control-Logic Truth Table
CS CLK LDAC RS MSB Serial Shift Register Function
HX H
HX
No Effect
LL H
HX
No Effect
L ￪+ H
HX
Shift-Register-Data Advanced
One Bit
LH H
HX
No Effect
￪+ L H
HX
No Effect
HX L
HX
No Effect
HX H
HX
No Effect
H X ￪+
HX
No Effect
HX H
L0
No Effect
HX H
L H No Effect
Input Register Function
Latched
Latched
Latched
Latched
Selected DAC Updated with Current
SR Contents
Latched
Latched
Latched
Latched Data = 0000H
Latched Data = 8000H
DAC Register
Latched
Latched
Latched
Latched
Latched
Transparent
Latched
Latched
Latched Data = 0000H
Latched Data = 8000H
1 For the AD5544, data appears at the SDO Pin 19 clock pulses after input at the SDI pin.
Rev. A | Page 8 of 20
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