Datasheet

ADS1253
SBAS199B
2
www.ti.com
Analog Input: Current (Momentary).............................................. ±100mA
(Continuous) ............................................... ±10mA
Voltage ................................... GND – 0.3V to V
DD
+ 0.3V
V
DD
to GND ............................................................................ –0.3V to 6V
V
REF
Voltage to GND ............................................... –0.3V to V
DD
+ 0.3V
Digital Input Voltage to GND ................................... –0.3V to V
DD
+ 0.3V
Digital Output Voltage to GND ................................. –0.3V to V
DD
+ 0.3V
Lead Temperature (soldering, 10s) .............................................. +300°C
Power Dissipation (any package) ................................................. 500mW
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 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.
ANALOG INPUT
Full-Scale Input Voltage ±V
REF
V
Absolute Input Voltage CHx+ or CHx– to GND GND – 0.3 V
DD
+ 0.3 V
Input Impedance CLK = 3840Hz 430 MΩ
CLK = 1MHz 1.7 MΩ
CLK = 8MHz 210 kΩ
Input Capacitance 6pF
Input Leakage At +25°C550pA
At T
MIN
to T
MAX
1nA
DYNAMIC CHARACTERISTICS
Data Rate 20.8 kHz
Bandwidth –3dB 4.24 kHz
Serial Clock (SCLK) 16 MHz
System Clock Input (CLK) 8MHz
ACCURACY
Integral Nonlinearity
(1)
±0.0002 ±0.0015 % of FSR
THD 1kHz Input; 0.1dB below FS 105 dB
Noise 1.8 2.7 ppm of FSR, rms
Resolution 24 Bits
No Missing Codes 24 Bits
Common-Mode Rejection 60Hz, AC 90 102 dB
Gain Error 0.1 1 % of FSR
Offset Error ±20 ±100 ppm of FSR
Gain Sensitivity to V
REF
1:1
Power-Supply Rejection Ratio 70 88 dB
PERFORMANCE OVER TEMPERATURE
Offset Drift 0.07 ppm/°C
Gain Drift 0.4 ppm/°C
VOLTAGE REFERENCE
V
REF
0.5 4.096 V
DD
V
Load Current 32 µA
ADS1253E
PARAMETER CONDITIONS MIN TYP MAX UNITS
ELECTRICAL CHARACTERISTICS
All specifications at T
MIN
to T
MAX
, V
DD
= +5V, CLK = 8MHz, and V
REF
= 4.096V, unless otherwise specified.
NOTE: (1) Applies to full-differential signals.
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.
SPECIFIED
PACKAGE TEMPERATURE PACKAGE ORDERING TRANSPORT
PRODUCT PACKAGE-LEAD DESIGNATOR RANGE MARKING NUMBER MEDIA, QUANTITY
ADS1253 SSOP-16 DBQ –40°C to +85°C ADS1253E ADS1253E Rails, 100
" """"ADS1253E/2K5 Tape and Reel, 2500
NOTE: (1) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI web site at www.ti.com.
PACKAGE/ORDERING INFORMATION
(1)
PRODUCT # OF INPUTS MAXIMUM DATA RATE COMMENTS
ADS1250 1 Differential 25.0kHz Includes PGA from 1 to 8
ADS1251 1 Differential 26.8kHz
ADS1252 1 Differential 41.7kHz
ADS1253 4 Differential 20.8kHz
ADS1254 4 Differential 20.8kHz Includes Separate Analog and Digital Supplies
PRODUCT FAMILY