EVAL-AD7998EBZ Analog Devices Inc, EVAL-AD7998EBZ Datasheet - Page 8
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EVAL-AD7998EBZ
Manufacturer Part Number
EVAL-AD7998EBZ
Description
Evaluation Control Board
Manufacturer
Analog Devices Inc
Specifications of EVAL-AD7998EBZ
Number Of Adc's
1
Number Of Bits
12
Sampling Rate (per Second)
188k
Data Interface
Serial
Inputs Per Adc
8 Single Ended
Input Range
0 ~ 5.5 V
Power (typ) @ Conditions
7.7mW @ 188kSPS, 5.5 V
Voltage Supply Source
Single Supply
Operating Temperature
-40°C ~ 85°C
Utilized Ic / Part
AD7998
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
AD7997/AD7998
Parameter
t
t
t
t
t
t
1
2
10
11
11A
12
SP
POWER-UP
A device must provide a data hold time for SDA in order to bridge the undefined region of the SCL falling edge.
For 3 V supplies, the maximum hold time with
SDA
SCL
S = START CONDITION
P = STOP CONDITION
Conditions
Standard mode
Fast mode
High speed mode
Standard mode
Fast mode
High speed mode
Standard mode
Fast mode
High speed mode
Standard mode
Fast mode
High speed mode
Fast mode
High speed mode
P
C
C
C
C
C
C
C
C
t
7
B
B
B
B
B
B
B
B
= 100 pF max
= 400 pF max
= 100 pF max
= 400 pF max
= 100 pF max
= 400 pF max
= 100 pF max
= 400 pF max
S
t
6
t
2
t
11
Min
20 + 0.1 C
10
20
20 + 0.1 C
10
20
20 + 0.1 C
10
20
20 + 0.1 C
10
20
0
0
1
t
4
C
B
= 100 pF max is 100 ns max.
AD7997/AD7998 Limit at T
B
B
B
B
Figure 2. Timing Diagram for 2-Wire Serial Interface
Max
300
300
80
160
1000
300
40
80
1000
300
80
160
300
300
40
80
50
10
t
1
t
12
t
3
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Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
typ µs
MIN
, T
MAX
S
t
5
t
10
Description
t
t
t
condition and after an Acknowledge bit
t
Pulse width of suppressed spike
Power-up time
FDA
RCL
RCL1
FCL
t
6
, rise time of SCL signal
, fall time of SCL signal
, fall time of SDA signal
, rise time of SCL signal after a repeated start
t
8
P
t
9