AD7824 Analog Devices, AD7824 Datasheet - Page 3

• Manufacturer Part Number: AD7824
• Description: LC2MOS High Speed 4- & 8-Channel 8-Bit ADCs
• Manufacturer: Analog Devices

TIMING CHARACTERISTICS
Parameter
t
t
t
t
t
t
t
t
t
t
t
t
NOTES
1
2
3
4
Specifications subject to change without notice.
Test Circuits
Sample tested at 25°C to ensure compliance. All input control signals are specified with tr = tf = 20 ns (10 % to 90% of 5 V) and timed from a voltage level of 1.6 V.
C
Measured with load circuits of Figure 1 and defined as the time required for an output to cross 0.8 V or 2.4 V.
Defined as the time required for the data lines to change 0.5 V when loaded with the circuits of Figure 2.
CSS
CSH
AS
AH
RDY
CRD
ACC1
ACC2
lNTH
DH
P
RD
L
4
= 50 pF.
2
2
3
3
Limit at 25 C
(All Grades)
0
0
0
30
40
2.0
85
50
40
75
60
500
60
600
500
500
Limit at
T
(K, L, B, C Grades)
0
0
0
35
60
2.4
110
60
65
100
70
80
MIN
1
(V
, T
DD
MAX
= 5 V; V
REF
(+) = 5 V; V
Limit at
T
(T, U Grades)
0
0
0
40
60
2.8
120
70
70
100
70
600
80
400
MIN
REF
, T
(–) = GND = 0 V unless otherwise noted)
MAX
Unit
ns min
ns min
ns min
ns min
ns max
µs max
ns max
ns max
ns typ
ns max
ns max
ns min
ns min
ns max
Conditions/Comments
CS to RD Setup Time
CS to RD Hold Time
Multiplexer Address Setup Time
Multiplexer Address Hold Time
CS to RDY Delay. Pull-Up
Resistor 5 kΩ.
Conversion Time, Mode 0
Data Access Time after RD
Data Access Time after INT, Mode 0
RD to INT Delay
Data Hold Time
Delay Time between Conversions
Read Pulsewidth, Mode 1
AD7824/AD7828