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ADT7518
 
Rev. A | Page 6 of 40
DAC AC CHARACTERISTICS
1
 
Table 2. V
DD
 = 2.7 V to 5.5 V, R
L
 = 4.7 k& to GND; C
L
 = 200 pF to GND; 4.7 k& to V
DD
; all specifications T
MIN
 to T
MAX
, unless
otherwise noted.
Parameter
2
Min
Typ
3
Max
Unit
Conditions/Comments
Output Voltage Settling Time
 
 
 
 
VREF = VDD = 5 V
ADT7518
 
6
8
祍
1/4 scale to 3/4 scale change (40h to C0h)
Slew Rate
 
0.7
 
V/祍
 
Major-Code Change Glitch Energy
 
12
 
nV-s
1 LSB change around major carry
Digital Feedthrough
 
0.5
 
nV-s
 
Digital Crosstalk
 
1
 
nV-s
 
Analog Crosstalk
 
0.5
 
nV-s
 
DAC-to-DAC Crosstalk
 
3
 
nV-s
 
Multiplying Bandwidth
 
200
 
kHz
V
REF
 = 2 V ?.1 V p-p
Total Harmonic Distortion
 
70
 
dB
VREF = 2.5 V ?.1 V p-p. Frequency = 10 kHz.
 
 
1
 Guaranteed by design and characterization, not production tested.
2
 See the
 section.
 Terminology
3
 @ 25癈.
SCL
t
4
t
2
t
1
t
3
t
5
t
6
SDA
DATA IN
SDA
DATA OU
 
Figure 2. I
2
C Bus Timing Diagram
t
1
t
2
t
3
t
5
t
6
t
4
t
7
t
8
D7
CS
SCLK
DIN
DOUT
D6
D5
D4
D3
D2
D1
D0
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
D7
D6
D5
D4
D3
D2
D1
D0
 
Figure 3. SPI Bus Timing Diagram
200?/SPAN>A
I
OH
1.6V
TO OUTPUT
PIN
C
L
50pF
200?/SPAN>A
I
OL
 
Figure 4. Load Circuit for Access Time and Bus Relinquish Time
4.7k&
4.7k&
V
DD
TO DAC
UTPUT
200pF
 
Figure 5. Load Circuit for DAC Outputs
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