Datasheet

ADS1217
2
SBAS260C
www.ti.com
ELECTRICAL CHARACTERISTICS: AV
DD
= 5V
All specifications at –40°C to +85°C, AV
DD
= +5V, DV
DD
= +2.7V to 5.25V, f
MOD
= 19.2kHz, PGA = 1, Buffer ON, R
DAC
= 150kΩ, f
DATA
= 10Hz, and V
REF
= +2.5V,
unless otherwise specified.
AV
DD
to AGND ...................................................................... –0.3V to +6V
DV
DD
to DGND ...................................................................... –0.3V to +6V
Input Current ............................................................... 100mA, Momentary
Input Current ................................................................. 10mA, Continuous
A
IN
................................................................... GND –0.5V to AV
DD
+ 0.5V
AV
DD
to DV
DD
........................................................................... –6V to +6V
AGND to DGND ................................................................. –0.3V to +0.3V
Digital Input Voltage to GND .................................... –0.3V to DV
DD
+ 0.3V
Digital Output Voltage to GND ................................. –0.3V to DV
DD
+ 0.3V
Maximum Junction Temperature ................................................... +150°C
Operating Temperature Range ......................................... –40°C to +85°C
Storage Temperature Range .......................................... –60°C to +150°C
Lead Temperature (soldering, 10s) .............................................. +300°C
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.
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.
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.
SPECIFIED
PACKAGE TEMPERATURE PACKAGE ORDERING TRANSPORT
PRODUCT PACKAGE-LEAD DESIGNATOR RANGE MARKING NUMBER MEDIA, QUANTITY
ADS1217 TQFP-48 PFB –40°C to +85°C ADS1217 ADS1217IPFBT Tape and Reel, 250
" """"ADS1217IPFBR Tape and Reel, 2000
NOTE: (1) For the most current package and ordering information, see the Package Option Addendum located at the end of this data sheet, or see the TI website at www.ti.com.
PACKAGE/ORDERING INFORMATION
(1)
ADS1217
PARAMETER CONDITIONS MIN TYP MAX UNITS
ANALOG INPUT
(A
IN
0 – A
IN
7, A
INCOM
)
Full-Scale Input Voltage (A
IN+
) – (A
IN–
) ±2V
REF
/PGA V
Analog Input Voltage Buffer OFF AGND – 0.1 AV
DD
+ 0.1 V
Buffer ON AGND + 0.05 AV
DD
– 1.5 V
Differential Input Impedance Buffer OFF 10/PGA MΩ
Input Current Buffer ON 0.5 nA
Bandwidth
Fast Settling Filter –3dB 0.469f
DATA
Hz
Sinc
2
Filter –3dB 0.318f
DATA
Hz
Sinc
3
Filter –3dB 0.262f
DATA
Hz
Programmable Gain Amplifier User Selectable Gain Ranges 1 128
Burnout Current Sources 2 µA
OFFSET DAC
Offset DAC Range ±V
REF
/(PGA) V
Offset DAC Monotonicity 8 Bits
Offset DAC Gain Error ±1%
Offset DAC Gain Error Drift 1 ppm/°C
SYSTEM PERFORMANCE
Resolution 24 Bits
No Missing Codes Sinc
3
Filter 24 Bits
Integral Nonlinearity End Point Fit, Differential Input, 0.0003 0.0012 % of FSR
(1)
Buffer Off
Offset Error Before Calibration 7.5 ppm of FSR
Offset Drift 0.02 ppm of FSR/°C
Gain Error After Calibration 0.005 %
Gain Error Drift 0.5 ppm/°C
Common-Mode Rejection at DC 100 dB
f
CM
= 60Hz, f
DATA
= 10Hz 130 dB
f
CM
= 50Hz, f
DATA
= 50Hz 120 dB
f
CM
= 60Hz, f
DATA
= 60Hz 120 dB
Normal-Mode Rejection f
SIG
= 50Hz, f
DATA
= 50Hz 100 dB
f
SIG
= 60Hz, f
DATA
= 60Hz 100 dB
Output Noise See Typical Characteristics
Power-Supply Rejection at DC, dB = –20log(∆V
OUT
/∆V
DD
)
(2)
80 95 dB
NOTES: (1) FSR is Full-Scale Range. (2) ∆V
OUT
is change in digital result. (3) 12pF switched capacitor at f
SAMP
clock frequency.