AD977/AD977A–SPECIFICATIONS
(Both Specs)
Parameter
DIGITAL INPUTS
Logic Levels
V
IL
V
IH
I
IL
I
IH
DIGITAL OUTPUTS
Data Format
Data Coding
Pipeline Delay
V
OL
V
OH
POWER SUPPLIES
Specified Performance
V
DIG
V
ANA
I
DIG
I
ANA
Power Dissipation
PWRD LOW
PWRD HIGH
TEMPERATURE RANGE
Specified Performance
T
MIN
to T
MAX
Conditions
Min
A, B, C Grades
Typ
Max
Unit
–0.3
2.0
+0.8
V
DIG
+ 0.3
±
10
±
10
V
V
µA
µA
I
SINK
= 1.6 mA
I
SOURCE
= 500
µA
Serial 16-Bits
Binary Two’s Complement or Straight Binary
Conversion Results Only Available after Completed Conversion
0.4
4
V
V
4.75
4.75
5
5
4
11
5.25
5.25
V
V
mA
mA
mW
µW
°C
100
50
–40
+85
Specifications subject to change without notice.
TIMING SPECIFICATIONS
(AD977A: F = 200 kHz, AD977: F = 100 kHz, V
S
S
DIG
= V
ANA
= 5 V, –40 C to +85 C)
AD977
Min Typ Max
50
83
4.0
83
8.0
50
40
7.6
2.0
5
10
350
450
100
20
100
20
30
20
10
15
25
10
7.5
5
0
20
8.0
Unit
ns
ns
µs
ns
ns
µs
µs
µs
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
µs
ns
µs
ns
ns
Symbol
Convert Pulsewidth
R/C,
CS
to
BUSY
Delay
BUSY
LOW Time
BUSY
Delay after End of Conversion
Aperture Delay
Conversion Time
Acquisition Time
Throughput Time
R/C Low to DATACLK Delay
DATACLK Period
DATA Valid Setup Time
DATA Valid Hold Time
EXT. DATACLK Period
EXT. DATACLK HIGH
EXT. DATACLK LOW
R/C,
CS
to EXT. DATACLK Setup Time
R/C to
CS
Setup Time
EXT. DATACLK to SYNC Delay
EXT. DATACLK to DATA Valid Delay
CS
to EXT. DATACLK Rising Edge Delay
Previous DATA Valid after
CS,
R/C Low
BUSY
to EXT. DATACLK Setup Time
Final EXT. DATACLK to
BUSY
Rising Edge
TAG Valid Setup Time
TAG Valid Hold Time
Specifications subject to change without notice.
AD977A
Min Typ Max
50
50
40
3.8
1.0
220
220
50
20
66
20
30
20
10
15
25
10
3.5
5
0
20
t
1
t
2
t
3
t
4
t
5
t
6
t
7
t
6
+ t
7
t
8
t
9
t
10
t
11
t
12
t
13
t
14
t
15
t
16
t
17
t
18
t
19
t
20
t
21
t
22
t
23
t
24
4.0
t
12
+ 5
66
66
t
12
+ 5
66
66
1.7
3.5
–4–
REV. D
AD [ ANALOG DEVICES ]
