ABSOLUTE MAXIMUM RATINGS(1)
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.
Analog Inputs: R1IN .......................................................................... ±25V
R2IN .......................................................................... ±25V
R3IN .......................................................................... ±25V
CAP ..................................... VANA+0.3V to AGND2 –0.3V
REF ....................................... Indefinite Short to AGND2,
Momentary Short to VANA
Ground Voltage Differences: DGND, AGND2 ................................. ±0.3V
VANA ...................................................................................................... 7V
V
V
DIG to VANA ....................................................................................... +0.3
DIG ....................................................................................................... 7V
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.
Digital Inputs ............................................................. –0.3V to VDIG +0.3V
Maximum Junction Temperature .................................................. +165°C
Internal Power Dissipation ............................................................ 700mW
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.
PACKAGE/ORDERING INFORMATION
MAXIMUM
INTEGRAL
MINIMUM
SIGNAL-TO-
SPECIFIED
LINEARITY
ERROR (LSB)
(NOISE + DISTORTION)
RATIO (DB)
PACKAGE
PACKAGE-LEAD DESIGNATOR(1)
TEMPERATURE PACKAGE
RANGE MARKING
ORDERING
NUMBER
TRANSPORT
MEDIA, QUANTITY
PRODUCT
ADS7808U
"
±0.9
"
70
"
SO-20
"
DW
"
–40°C to +85°C ADS7808U
ADS7808U
Tube, 38
"
"
ADS7808U/1K Tape and Reel, 1000
ADS7808UB Tube, 38
ADS7808UB/1K Tape and Reel, 1000
ADS7808UB
"
±0.45
"
72
"
"
"
"
"
"
"
ADS7808UB
"
NOTE: (1) For the most current specifications and package information, refer to our web site at www.ti.com.
ELECTRICAL CHARACTERISTICS
At TA = –40°C to +85°C, fS = 100kHz, VDIG = VANA = +5V, using internal reference and fixed resistors as shown in Figure 4, unless otherwise specified.
ADS7808U
TYP
ADS7808UB
TYP
PARAMETER
RESOLUTION
CONDITIONS
MIN
MAX
MIN
MAX
UNITS
12
ꢀ
Bits
ANALOG INPUT
Voltage Ranges
Impedance
±10V, 0V to 5V, etc. (See Table I)
See Table I
Capacitance
35
ꢀ
pF
THROUGHPUT SPEED
Conversion Time
Complete Cycle
5.7
8
10
ꢀ
ꢀ
ꢀ
µs
µs
Acquire and Convert
Throughput Rate
100
ꢀ
kHz
DC ACCURACY
Integral Linearity Error
Differential Linearity Error
No Missing Codes
±0.9
±0.9
±0.45
±0.45
LSB(1)
LSB
Specified
0.1
ꢀ
ꢀ
Transition Noise(2)
LSB
%
ppm/°C
%
ppm/°C
mV
ppm/°C
mV
mV
mV
ppm/°C
ms
Full Scale Error(3,4)
Full Scale Error Drift
Full Scale Error(3,4)
Full Scale Error Drift
Bipolar Zero Error(3)
Bipolar Zero Error Drift
Unipolar Zero Error(3)
±0.5
±0.5
±10
±0.25
±0.25
ꢀ
±7
±2
±2
±5
ꢀ
±2
Ext. 2.5000V Ref
Ext. 2.5000V Ref
Bipolar Ranges
Bipolar Ranges
0V to 10V Range
0V to 4V Range
0V to 5V Range
Unipolar Ranges
1µF Capacitor to CAP
±5
±3
±3
ꢀ
ꢀ
ꢀ
Unipolar Zero Error Drift
Recovery to Rated Accuracy
after Power Down
±2
1
ꢀ
ꢀ
Power Supply Sensitivity
(VDIG = VANA = VD)
+4.75V < VD < +5.25V
±0.5
–80
ꢀ
ꢀ
LSB
AC ACCURACY
Spurious-Free Dynamic Range
Total Harmonic Distortion
Signal-to-(Noise+Distortion)
Signal-to-Noise
fIN = 45kHz
fIN = 45kHz
80
90
–90
73
73
250
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
dB(5)
dB
dB
dB
kHz
f
f
IN = 45kHz
IN = 45kHz
70
70
72
72
Full-Power Bandwidth(6)
ADS7808
2
SBAS018A
www.ti.com
BB [ BURR-BROWN CORPORATION ]
