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ADC122S021CIMM/NOPB 数据手册 - National Semiconductor（美国国家半导体）
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National Semiconductor（美国国家半导体）
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MSOP-8
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ADC122S021CIMM/NOPB数据手册
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Symbol Parameter Conditions Typical
Limits
(Note 7)
Units
ANALOG INPUT CHARACTERISTICS
V
IN
Input Range
0 to V
A
V
I
DCL
DC Leakage Current ±0.02 ±1 µA (max)
C
INA
Input Capacitance
Track Mode 33 pF
Hold Mode 3 pF
DIGITAL INPUT CHARACTERISTICS
V
IH
Input High Voltage
V
A
= +5.25V
2.4 V (min)
V
A
= +3.6V
2.1 V (min)
V
IL
Input Low Voltage 0.8 V (max)
I
IN
Input Current
V
IN
= 0V or V
IN
= V
A
±0.02 ±10 µA (max)
C
IND
Digital Input Capacitance 2 4 pF (max)
DIGITAL OUTPUT CHARACTERISTICS
V
OH
Output High Voltage
I
SOURCE
= 200 µA V
A
− 0.03
V
A
− 0.5
V (min)
I
SOURCE
= 1 mA V
A
− 0.1
V
OL
Output Low Voltage
I
SINK
= 200 µA
0.02 0.4 V (max)
I
SOURCE
= 1 mA
0.1 V
I
OZH
, I
OZL
TRI-STATE® Leakage Current ±0.01 ±1 µA (max)
C
OUT
TRI-STATE® Output Capacitance 2 4 pF (max)
Output Coding Straight (Natural) Binary
POWER SUPPLY CHARACTERISTICS (C
L
= 10 pF)
V
A
Analog Supply Voltage
2.7 V (min)
5.25 V (max)
I
A
Supply Current, Normal Mode
(Operational, CS low)
V
A
= +5.25V,
f
SAMPLE
= 200 ksps, f
IN
= 39.9 kHz
1.5 2.1 mA (max)
V
A
= +3.6V,
f
SAMPLE
= 200 ksps, f
IN
= 39.9 kHz
0.62 1.0 mA (max)
Supply Current, Shutdown (CS high)
V
A
= +5.25V,
f
SAMPLE
= 0 ksps
60 nA
V
A
= +3.6V,
f
SAMPLE
= 0 ksps
38 nA
P
D
Power Consumption, Normal Mode
(Operational, CS low)
V
A
= +5.25V
7.9 11 mW (max)
V
A
= +3.6V
2.2 3.6 mW (max)
Power Consumption, Shutdown (CS
high)
V
A
= +5.25V
0.32 µW
V
A
= +3.6V
0.14 µW
AC ELECTRICAL CHARACTERISTICS
f
SCLK
Maximum Clock Frequency (Note 8)
0.8 MHz (min)
3.2 MHz (max)
f
S
Sample Rate (Note 8)
50 ksps (min)
200 ksps (max)
t
CONV
Conversion Time 13 SCLK cycles
DC SCLK Duty Cycle
f
SCLK
= 3.2 MHz
50
30 % (min)
70 % (max)
t
ACQ
Track/Hold Acquisition Time Full-Scale Step Input 3 SCLK cycles
Throughput Time Acquisition Time + Conversion Time 16 SCLK cycles
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