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ADC081S021CISD 데이터시트(PDF) 5 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
부품명 ADC081S021CISD
상세설명  Single Channel, 50 to 200ksps, 8-Bit A/D Converter
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제조업체  NSC [National Semiconductor (TI)]
홈페이지  http://www.national.com
Logo NSC - National Semiconductor (TI)

ADC081S021CISD 데이터시트(HTML) 5 Page - National Semiconductor (TI)

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ADC081S021 Converter Electrical Characteristics (Notes 7, 9) (Continued)
The following specifications apply for V
A = +2.7V to 5.25V, fSCLK = 1 MHz to 4 MHz, fSAMPLE = 50 ksps to 200 ksps,
C
L = 15 pF, unless otherwise noted. Boldface limits apply for TA =TMIN to TMAX: all other limits TA = 25˚C.
Symbol
Parameter
Conditions
Typical
Limits
(Note 9)
Units
AC ELECTRICAL CHARACTERISTICS
f
S
Sample Rate
(Note 8)
50
ksps (min)
200
ksps (max)
t
CONV
Conversion Time
16
SCLK cycles
DC
SCLK Duty Cycle
f
SCLK = 4 MHz
50
40
% (min)
60
% (max)
t
ACQ
Track/Hold Acquisition Time
400
ns (max)
Throughput Time
Acquisition Time + Conversion Time
20
SCLK cycles
t
QUIET
(Note 10)
50
ns (min)
t
AD
Aperture Delay
3
ns
t
AJ
Aperture Jitter
30
ps
ADC081S021 Timing Specifications
The following specifications apply for V
A = +2.7V to 5.25V, GND = 0V, fSCLK = 1.0 MHz to 4.0 MHz, CL =25pF,
f
SAMPLE = 50 ksps to 200 ksps, Boldface limits apply for TA =TMIN to TMAX: all other limits TA = 25˚C.
Symbol
Parameter
Conditions
Typical
Limits
Units
t
CS
Minimum CS Pulse Width
10
ns (min)
t
SU
CS to SCLK Setup Time
10
ns (min)
t
EN
Delay from CS Until SDATA TRI-STATE®
Disabled (Note 11)
20
ns (max)
t
ACC
Data Access Time after SCLK Falling Edge
(Note 12)
V
A = +2.7V to +3.6V
40
ns (max)
V
A = +4.75V to +5.25V
20
ns (max)
t
CL
SCLK Low Pulse Width
0.4 x
t
SCLK
ns (min)
t
CH
SCLK High Pulse Width
0.4 x
t
SCLK
ns (min)
t
H
SCLK to Data Valid Hold Time
V
A = +2.7V to +3.6V
7
ns (min)
V
A = +4.75V to +5.25V
5
ns (min)
t
DIS
SCLK Falling Edge to SDATA High
Impedance (Note 13)
V
A = +2.7V to +3.6V
25
ns (max)
6
ns (min)
V
A = +4.75V to +5.25V
25
ns (max)
5
ns (min)
t
POWER-UP
Power-Up Time from Full Power-Down
1
µs
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is
functional, but do not guarantee specific performance limits. For guaranteed specifications and test conditions, see the Electrical Characteristics. The guaranteed
specifications apply only for the test conditions listed. Some performance characteristics may degrade when the device is not operated under the listed test
conditions.
Note 2: All voltages are measured with respect to GND = 0V, unless otherwise specified.
Note 3: When the input voltage at any pin exceeds the power supply (that is, VIN < GND or VIN > VA), the current at that pin should be limited to 10 mA. The 20
mA maximum package input current rating limits the number of pins that can safely exceed the power supplies with an input current of 10 mA to two. The Absolute
Maximum Rating specification does not apply to the VA pin. The current into the VA pin is limited by the Analog Supply Voltage specification.
Note 4: The absolute maximum junction temperature (TJmax) for this device is 150˚C. The maximum allowable power dissipation is dictated by TJmax, the
junction-to-ambient thermal resistance (
θJA), and the ambient temperature (TA), and can be calculated using the formula PDMAX=(TJmax − TA)/θJA. The values
for maximum power dissipation listed above will be reached only when the device is operated in a severe fault condition (e.g. when input or output pins are driven
beyond the power supply voltages, or the power supply polarity is reversed). Obviously, such conditions should always be avoided.
Note 5: Human body model is 100 pF capacitor discharged through a 1.5 k
Ω resistor. Machine model is 220 pF discharged through zero ohms
Note 6: Reflow temperature profiles are different for lead-free and non-lead-free packages.
Note 7: Tested limits are guaranteed to National’s AOQL (Average Outgoing Quality Level).
Note 8: This is the frequency range over which the electrical performance is guaranteed. The device is functional over a wider range which is specified under
Operating Ratings.
Note 9: Data sheet min/max specification limits are guaranteed by design, test, or statistical analysis.
Note 10: Minimum Quiet Time required by bus relinquish and the start of the next conversion.
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