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ADS7812UB Datasheet(PDF) 2 Page - Texas Instruments

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Part # ADS7812UB
Description  Low-Power, Serial 12-Bit Sampling ANALOG-TO-DIGITAL CONVERTER
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

ADS7812UB Datasheet(HTML) 2 Page - Texas Instruments

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ADS7812
2
SBAS042A
www.ti.com
SPECIFICATIONS
At TA = –40°C to +85°C, fS = 40kHz, VS = +5V ±5%, using internal reference, unless otherwise specified.
ADS7812P, U
ADS7812PB, UB
PARAMETER
CONDITIONS
MIN
TYP
MAX
MIN
TYP
MAX
UNITS
RESOLUTION
12
Bits
ANALOG INPUT
Voltage Range
See Table I
Impedance
See Table I
Capacitance
35
pF
THROUGHPUT SPEED
Conversion Time
20
µs
Complete Cycle
Acquire and Convert
25
µs
Throughput Rate
40
kHz
DC ACCURACY
Integral Linearity Error
0.1
±1
±0.5
LSB(1)
Differential Linearity Error
0.1
±1
±0.5
LSB
No Missing Codes
Specified
Transition Noise(2)
0.05
LSB
Full Scale Error(3)
±0.5
±0.25
%
Full Scale Error Drift
±14
ppm/
°C
Full Scale Error(3)
Ext. 2.5000V Ref
±0.5
±0.25
%
Full Scale Error Drift
Ext. 2.5000V Ref
±5
ppm/
°C
Bipolar Zero Error
Bipolar Ranges
±10
mV
Bipolar Zero Error Drift
Bipolar Ranges
±3
ppm/
°C
Unipolar Zero Error
Unipolar Ranges
±6
mV
Unipolar Zero Error Drift
Unipolar Ranges
±3
ppm/
°C
Recovery Time to Rated Accuracy
1.0
µF Capacitor to CAP
300
µs
from Power Down(4)
Power Supply Sensitivity
+4.75V < (VS = +5V) < +5.25
±0.75
LSB
AC ACCURACY
Spurious-Free Dynamic Range
fIN = 1kHz
80
98
✻✻
dB(5)
Total Harmonic Distortion
fIN = 1kHz
–96
–80
✻✻
dB
Signal-to-(Noise+Distortion)
fIN = 1kHz
70
74
72
dB
Signal-to-Noise
fIN = 1kHz
70
74
72
dB
Useable Bandwidth(6)
130
kHz
Full Power –3dB Bandwidth
600
kHz
ABSOLUTE MAXIMUM RATINGS(1)
Analog Inputs: R1IN ......................................................................... ±16.5V
R2IN ................................................ GND – 0.3V to +16.5V
R3IN ......................................................................... ±16.5V
REF ............................................ GND – 0.3V to VS + 0.3V
CAP ............................................... Indefinite Short to GND
Momentary Short to VS
VS ........................................................................................................... 7V
Digital Inputs ...................................................... GND – 0.3V to VS + 0.3V
Maximum Junction Temperature ................................................... +165
°C
Internal Power Dissipation ............................................................. 825mW
Lead Temperature (soldering, 10s) ............................................... +300
°C
NOTE: (1) Stresses above these ratings may cause permanent damage.
Exposure to absolute maximum conditions for extended periods may degrade
device reliability.
ELECTROSTATIC
DISCHARGE SENSITIVITY
This integrated circuit can be damaged by ESD. Texas Instru-
ments recommends that all integrated circuits be handled with
appropriate precautions. Failure to observe proper handling
and installation procedures can cause damage.
ESD damage can range from subtle performance degradation
to complete device failure. Precision integrated circuits may be
more susceptible to damage because very small parametric
changes could cause the device not to meet its published
specifications.
MINIMUM
MAXIMUM
SPECIFIED
SIGNAL-TO-
INTEGRAL
NO MISSING
(NOISE +
SPECIFIED
LINEARITY
CODE LEVEL DISTORTION)
PACKAGE
TEMPERATURE
PACKAGE
ORDERING
TRANSPORT
PRODUCT
ERROR (LSB)
(LSB)
RATIO (DB)
PACKAGE-LEAD DESIGNATOR(1)
RANGE
MARKING
NUMBER
MEDIA, QUANTITY
ADS7812P
±1
12
70
Dip-16
N
–40
°C to +85°C ADS7812P
ADS7812P
Tubes, 25
ADS7812PB
±0.5
12
72
""
"
ADS7812PB
ADS7812PB
Tubes, 25
ADS7812U
±1
12
70
SO-16
DW
–40
°C to +85°C ADS7812U
ADS7812U
Tubes, 48
"
"
"
"
"
"
"
"
ADS7812U/1K
Tape and Reel, 1000
ADS7812UB
±0.5
12
72
SO-16
DW
–40
°C to +85°C ADS7812UB
ADS7812UB
Tubes, 48
"
"
"
"
"
"
"
"
ADS7812UB/1K
Tape and Reel, 1000
PACKAGE/ORDERING INFORMATION
NOTE: (1) For the most current specifications and package information, refer to our web site at www.ti.com.


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