SNR and SINAD figures quoted include external analog input circuit noise contribution of approximately 1 dB.
3
See Typical Performance Characteristics section for analog input circuits used.
4
See Terminology section.
5
Sample tested @ 25°C to ensure compliance.
6
Digital input levels at GND or V
DRIVE
.
Specifications subject to change without notice.
TIMING CHARACTERISTICS
Parameter
*
(V
DD
= 5 V
±
5%, AGND = DGND = 0 V, V
REF
= External; all specifications T
MIN
to T
MAX
and valid for
V
DRIVE
= 2.7 V to 5.25 V, unless otherwise noted.)
Symbol
t
CONV
t
QUIET
t
1
t
2
t
3
t
4
t
5
t
6
t
7
t
8
t
14
t
15
t
9
t
10
t
11
t
12
t
13
Min
Typ
Max
300
100
5
20
0
25
30
5
10
0
30
30
5
2
6
5
0
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
DATA READ
Conversion Time
Quiet Time before Conversion Start
CONVST
Pulsewidth
CONVST
Falling Edge to
BUSY
Falling Edge
CS
Falling Edge to
RD
Falling Edge
Data Access Time
CONVST
Falling Edge to New Data Valid
BUSY
Rising Edge to New Data Valid
Bus Relinquish Time
RD
Rising Edge to
CS
Rising Edge
CS
Pulsewidth
RD
Pulsewidth
DATA WRITE
WRITE Pulsewidth
Data Setup Time
Data Hold Time
CS
Falling Edge to WRITE Falling Edge
WRITE Falling Edge to
CS
Rising Edge
Specifications subject to change without notice.
*All
timing specifications given above are with a 25 pF load capacitance. With a load capacitance greater than this value, a digital buffer or latch must be used.
REV. 0
–3–
AD7482
ABSOLUTE MAXIMUM RATINGS*
(T
A
= 25°C, unless otherwise noted.)
V
DD
to GND . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +7 V
V
DRIVE
to GND . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +7 V
Analog Input Voltage to GND . . . . . –0.3 V to AV
DD
+ 0.3 V
Digital Input Voltage to GND . . . . . –0.3 V to V
DRIVE
+ 0.3 V
REFIN to GND . . . . . . . . . . . . . . . . –0.3 V to AV
DD
+ 0.3 V
Input Current to Any Pin except Supplies . . . . . . . . .
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