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參數(shù)資料
| 型號： | ADC78H90EVAL |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | 8-Channel, 500 kSPS, 12-Bit A/D Converter |
| 中文描述： | 8通道，500 kSPS的，12位A / D轉(zhuǎn)換器 |
| 文件頁數(shù)： | 4/14頁 |
| 文件大?。?/td> | 371K |
| 代理商： | ADC78H90EVAL |
4
www.national.com/JPN/
A
ADC78H89
(Note 2)(
)
AV
DD
DV
DD
2.7V
5.25V
T
A
f
SCLK
8MHz
f
SAMPLE
500kSPS
T
A
T
MIN
T
MAX
25
Note 1:
Note 2:
Note 3:
min/max
Symbol
POWER SUPPLY CHARACTERISTICS
(C
L
Parameter
Conditions
Typical
Limits
Units
10 pF)
P
D
Power Dissipation, Normal Mode
(Operational, CS low)
AV
DD
AV
DD
AV
DD
AV
DD
DV
DD
DV
DD
DV
DD
DV
DD
4.75V to
5.25V
8.3
12
8.3
mW(max)
2.7V to
3.6V
1.5
mW(max)
Power Dissipation, Shutdown (CS
high)
4.75V to
5.25V
0.5
W
2.7V to
3.6V
0.3
W
ANALOG INPUT CHARACTERISTICS
V
IN
Input Range
I
DCL
DC Leakage Current
0 to AV
DD
V
1
A(max)
pF
pF
C
INA
Input Capacitance
In Track Mode
In Hold Mode
33
3
DIGITAL INPUT CHARACTERISTICS
V
IH
Input High Voltage
DV
DD
DV
DD
DV
DD
V
IN
4.75Vto
5.25V
2.4
V(min)
2.7V to
3.6V
2.1
0.8
1
4
V(min)
V
IL
I
IN
C
IND
DIGITAL OUTPUT CHARACTERISTICS
Input Low Voltage
2.7V to
5.25V
V(max)
Input Current
0V or DV
DD
10 nA
A(max)
Input Capacitance
2
pF(max)
V
OH
Output High Voltage
I
SOURCE
5.25V
I
SINK
200 A, DV
DD
2.7V to
DV
DD
0.5
V(min)
V
OL
I
OZL
C
OUT
Output Low Voltage
200 A
0.4
1
4
V(max)
TRI-STATE Leakage Current
A(max)
TRI-STATE Output Capacitance
Output Coding
AC ELECTRICAL CHARACTERISTICS
f
SCLK
Clock Frequency
t
CON
Conversion Time
DC
Duty Cycle
t
TH
Track/Hold Acquisition Time
2
pF(max)
Straight (Natural) Binary
8
MHz(max)
1.625 s with f
SCLK
8 MHz
13
SCLK cycles
40-60
Full-Scale Step Input
Conversion Time
500 kSPS with f
SCLK
3
SCLK cycles
Throughput Time
Acquisition Time,
8 MHz
16
SCLK cycles
f
RATE
t
AD
Throughput Rate
500
kSPS(min)
Aperture Delay
4
ns
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