ad8522jruz-reel Analog Devices, Inc., ad8522jruz-reel Datasheet - Page 3

• Manufacturer Part Number: ad8522jruz-reel
• Description: +5 Volt, Serial Input, Dual 12-bit Dac
• Manufacturer: Analog Devices, Inc.

Data Word
Sf/Hd
Hardware Load:
L
L
L
L
Software Decode Load:
H
H
H
H
H
H
H
NOTES
1
2
3
REV. A
In software mode LDA and LDB perform the same function. They can be tied together or the unused pin should be tied high.
External Pins LDA and LDB should always be high when shifting Data into the shift register.
Last
D0
DB0
symbol denotes negative transition.
D1
DB1
B
X
X
X
X
L
H
H
L
L
H
H
D2
DB2
D3
DB3
CLK
V
SDI
SDO
CLK
CS
LD
SDI
OUT
RS
LD
A
X
X
X
X
L
L
L
H
H
H
H
FS
ZS
D4
DB4
t
LD1
Sf/Hd
t
CH
D5
DB5
t
SERIAL INPUT REGISTER DATA FORMAT
CSS
Figure 3. AC Timing SDO Pin Load Circuit
B
Ext Pins
LDA
H
H
X
H
H
H
A
SDO
t
D6
DB6
CL
Figure 2. Timing Diagram
t
NC
DS
Table I. Truth Table
LDB
H
H
X
H
H
H
DB11 DB10
t
DH
D7
DB7
t
LD2
–3–
1.6mA
200µA
D8
DB8
DAC Register
Loads DACA + DACB with Data from SR
Loads DACA with Data from SR
Loads DACB with Data from SR
No Load
No Load
Loads DACB with Data from SR, See Note 1 Below
No Load
Loads DACA with Data from SR, See Note 1 Below
No Load
Loads DACA + DACB with Data from SR, See 1 Note Below
No Load
t
DB4
LDW
D9
DB9
t
S
1.6 VOLT
DB3
D10
DB10 DB11 NC
DB2
ERROR BAND
1 LSB
DB1
t
CSH
t
PD
D11
DB0
t
CLRW
t
S
t
LD2
D12
t
LDW
D13
A
AD8522
D14 D15
B
First
Sf/Hd