MP7611 Exar Corporation, MP7611 Datasheet - Page 7

• Manufacturer Part Number: MP7611
• Description: Octal 14-bit Dac Array D/a Converter With Output Amplifier And Parallel Data/address Up Control Logic
• Manufacturer: Exar Corporation

Digital Output Data
Data Readback
Analog Output
Chip Select
D0 to D113
Load Latch A
Load Latch B
Rev. 3.01
Input/Output
Chip Select
Address
A0-A2
Address
A0-A2
CS
RD
Data
LD1
LD2
Bus
CS
Notes:
(1)
(2)
(3)
Notes:
(1)
(2)
Chip Select (CS) and Load LATCHA (LD1) Signals follow the same timing constraints and are interchangeable
R1 = R2 = 1.
For the case where LD2 is in the low state, analog output would respond to the falling edge of LD1 (transparent mode).
Chip Select (CS) and Data Readback (RD) Signals follow the same timing constraints and are interchangeable
R1 = R2 = 1.
in the above diagram.
in the above diagram.
R1
+FS
--FS
R2
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
don’t care
Reset first latch bank to
1000 . . . . .0000
Reset second latch bank to 1000 . . . . .0000 and analog
output to zero volt.
don’t care
Figure 1. Loading Latch A and Updating Latch B
Figure 2. Read Back First Latch Bank of One DAC
t
CS1
t
AS
HIGH-Z
Figure 3. Reset Operations
t
t
CS2
AS
t
LD1W
t
DS
t
R1W
t
DA
t
t
LD1LD2
7
RD
t
t
CH1
LD2W
t
DH
t
AH
t
DR
t
t
CH2
t
SD
AH
don’t care
HIGH-Z
t
R2W
don’t care
MP7611