Datasheet

ADS7806
2
SBAS021B
www.ti.com
Analog Inputs: R1
IN
............................................................................ ±12V
R2
IN
........................................................................... ±5.5V
CAP ................................... V
ANA
+ 0.3V to AGND2 – 0.3V
REF.......................................... Indefinite Short to AGND2,
Momentary Short to V
ANA
Ground Voltage Differences: DGND, AGND1, and AGND2 ............. ±0.3V
V
ANA
....................................................................................................... 7V
V
DIG
to V
ANA
...................................................................................... +0.3V
V
DIG
........................................................................................................ 7V
Digital Inputs ............................................................. –0.3V to V
DIG
+ 0.3V
Maximum Junction Temperature ................................................... +165°C
Internal Power Dissipation ............................................................. 825mW
Lead Temperature (soldering, 10s) ............................................... +300°C
ABSOLUTE MAXIMUM RATINGS
(1)
ELECTRICAL CHARACTERISTICS
At T
A
= –40°C to +85°C, f
S
= 40kHz, V
DIG
= V
ANA
= +5V, and using internal reference and fixed resistors (see Figure 7b), unless otherwise specified.
ADS7806P, U ADS7806PB, UB
PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS
RESOLUTION 12 ✻ Bits
ANALOG INPUT
Voltage Ranges ±10, 0 to +5, 0 to +4 V
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 ±0.15 ±0.9 ✻ ±0.45 LSB
(1)
Differential Linearity Error ±0.15 ±0.9 ✻ ±0.45 LSB
No Missing Codes
Tested ✻ Bits
Transition Noise
(2)
0.1 ✻ LSB
Gain Error ±0.2 ±0.1 %
Full-Scale Error
(3,4)
±0.5 ±0.25 %
Full-Scale Error Drift ±7 ±5 ppm/°C
Full-Scale Error
(3,4)
Ext. 2.5000V Ref ±0.5 ±0.25 %
Full-Scale Error Drift Ext. 2.5000V Ref ±0.5 ✻ ppm/°C
Bipolar Zero Error
(3)
±10V Range ±10 ✻ mV
Bipolar Zero Error Drift ±10V Range ±0.5 ✻ ppm/°C
Unipolar Zero Error
(3)
0V to 5V, 0V to 4V Ranges ±3 ✻ mV
Unipolar Zero Error Drift 0V to 5V, 0V to 4V Ranges ±0.5 ✻ ppm/°C
Recovery Time to Rated Accuracy 2.2µF Capacitor to CAP 1 ✻ ms
from Power-Down
(5)
Power-Supply Sensitivity +4.75V < V
S
< +5.25V ±0.5 ✻ LSB
(V
DIG
= V
ANA
= V
S
)
MAXIMUM MINIMUM
INTEGRAL SIGNAL-TO- SPECIFIED
LINEARITY (NOISE + DISTORTION) PACKAGE TEMPERATURE PACKAGE ORDERING TRANSPORT
PRODUCT ERROR (LSB) RATIO (DB) PACKAGE-LEAD DESIGNATOR
(1)
RANGE MARKING NUMBER MEDIA, QUANTITY
ADS7806P ±0.9 70 DIP-28 NT –40°C to +85°C ADS7806P ADS7806P Tubes, 13
ADS7806PB ±0.45 72
"""ADS7806PB ADS7806PB Tubes, 13
ADS7806U ±0.9 70 SO-28 DW –40°C to +85°C ADS7806U ADS7806U Tubes, 28
" " " " " " ADS7806U ADS7806U/1K Tape and Reel, 1000
ADS7806UB ±0.45 72
"""ADS7806UB ADS7806UB Tubes, 28
" " " " " " ADS7806UB ADS7806UB/1K Tape and Reel, 1000
PACKAGE/ORDERING INFORMATION
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 degrada-
tion 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.
NOTE: (1) Stresses above those listed under “Absolute Maximum Ratings”
may cause permanent damage to the device. Exposure to absolute maximum
conditions for extended periods may affect device reliability.
NOTE: (1) For the most current specifications and package information, refer to our web site at www.ti.com.