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ADC121S101 bảng dữ liệu(PDF) 5 Page - Texas Instruments

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Giải thích chi tiết về linh kiện  ADC121S021 Single Channel, 50 to 200 ksps, 12-Bit A/D Converter
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ADC121S101 bảng dữ liệu(HTML) 5 Page - Texas Instruments

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ADC121S021
www.ti.com
SNAS305I – JULY 2005 – REVISED JANUARY 2014
ADC121S021 Converter Electrical Characteristics
(1)(2) (continued)
The following specifications apply for VA = +2.7V to 5.25V, fSCLK = 1 MHz to 4 MHz, fSAMPLE = 50 ksps to 200 ksps, CL = 15
pF, unless otherwise noted. Boldface limits apply for TA = TMIN to TMAX: all other limits TA = 25°C.
Limits
Parameter
Test Conditions
Typical
Units
(2)
DIGITAL OUTPUT CHARACTERISTICS
ISOURCE = 200 µA
VA − 0.07
VA − 0.2
V (min)
VOH
Output High Voltage
ISOURCE = 1 mA
VA − 0.1
V
ISINK = 200 µA
0.03
0.4
V (max)
VOL
Output Low Voltage
ISINK = 1 mA
0.1
V
IOZH, IOZL TRI-STATE® Leakage Current
±0.1
±10
µA (max)
COUT
TRI-STATE® Output Capacitance
2
4
pF (max)
Output Coding
Straight (Natural) Binary
POWER SUPPLY CHARACTERISTICS
2.7
V (min)
VA
Supply Voltage
5.25
V (max)
VA = +5.25V,
1.5
2.8
mA (max)
fSAMPLE = 200 ksps
Supply Current, Normal Mode
(Operational, CS low)
VA = +3.6V,
0.40
1.2
mA (max)
fSAMPLE = 200 ksps
IA
fSCLK = 0 MHz, VA = +5.25V
500
nA
fSAMPLE = 0 ksps
Supply Current, Shutdown (CS high)
VA = +5.25V, fSCLK = 4 MHz,
60
µA
fSAMPLE = 0 ksps
VA = +5.25V
7.9
14.7
mW (max)
Power Consumption, Normal Mode
(Operational, CS low)
VA = +3.6V
1.5
4.3
mW (max)
fSCLK = 0 MHz, VA = +5.25V
PD
2.6
µW
fSAMPLE = 0 ksps
Power Consumption, Shutdown (CS
high)
VA = +5.25V, fSCLK = 4 MHz,
315
µW
fSAMPLE = 0 ksps
AC ELECTRICAL CHARACTERISTICS
1.0
MHz (min)
fSCLK
Clock Frequency
(3)
4.0
MHz (max)
50
ksps (min)
fS
Sample Rate
(3)
200
ksps (max)
40
% (min)
DC
SCLK Duty Cycle
fSCLK = 4 MHz
50
60
% (max)
tACQ
Minimum Time Required for Acquisition
350
ns (max)
tQUIET
(4)
50
ns (min)
tAD
Aperture Delay
3
ns
tAJ
Aperture Jitter
30
ps
(3)
This is the frequency range over which the electrical performance is ensured. The device is functional over a wider range which is
specified under Operating Ratings.
(4)
Minimum Quiet Time required by bus relinquish and the start of the next conversion.
Copyright © 2005–2014, Texas Instruments Incorporated
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