AD7885 AD [Analog Devices], AD7885 Datasheet - Page 4

• Manufacturer Part Number: AD7885
• Description: LC2MOS 16-Bit, High Speed Sampling ADCs
• Manufacturer: AD [Analog Devices]

AD7884/AD7885
Figure 2. AD7884 Timing Diagram, Using CS and RD
CONVST
BUSY
DATA
CS
RD
t
1
CONVST
CONVST
HBEN
BUSY
HBEN
BUSY
DATA
DATA
t
2
RD
CS
Hi-Z
t
t
1
1
t
CONVERT
Figure 5. AD7885 Timing Diagram, with CS and RD Permanently Low
t
2
t
2
OLD DATA VALID
Hi-Z
Figure 4. AD7885 Timing Diagram, Using CS and RD
(DB8 – DB15)
t
3
t
CONVERT
t
CONVERT
t
6
t
DATA
VALID
4
t
t
9
Hi-Z
8
t
t
5
t
3
7
t
6
–4–
NEW DATA VALID
(DB8 – DB15)
Figure 3. AD7884 Timing Diagram, with CS and RD
Permanently Low
CONVST
DB0–DB7
t
DATA
VALID
4
BUSY
DATA
t
13
NEW DATA VALID
t
11
t
(DB0 – DB7)
5
Hi-Z
t
7
t
t
1
10
t
2
t
OLD DATA VALID
14
NEW DATA VALID
t
(DB8 – DB15)
12
t
CONVERT
DB8–DB15
DATA
VALID
NEW DATA VALID
(DB0 – DB7)
Hi-Z
NEW DATA VALID
t
8
REV. C