Datasheet

ADS1100
3
SBAS239B
www.ti.com
ADS1100
PARAMETER CONDITIONS MIN TYP MAX UNITS
ANALOG INPUT
Full-Scale Input Voltage (V
IN+
) – (V
IN–
) ±V
DD
/PGA V
Analog Input Voltage V
IN+
, V
IN–
to GND GND – 0.2 V
DD
+ 0.2 V
Differential Input Impedance 2.4/PGA MΩ
Common-Mode Input Impedance 8MΩ
SYSTEM PERFORMANCE
Resolution and No Missing Codes DR = 00 12 12 Bits
DR = 01 14 14 Bits
DR = 10 15 15 Bits
DR = 11 16 16 Bits
Conversion Rate DR = 00 104 128 184 SPS
DR = 01 26 32 46 SPS
DR = 10 13 16 23 SPS
DR = 11 6.5 8 11.5 SPS
Output Noise See Typical Characteristic Curves
Integral Nonlinearity DR = 11, PGA = 1, End Point Fit
(1)
±0.003 ±0.0125 % of FSR
(2)
Offset Error ±2.5/PGA ±5/PGA mV
Offset Drift PGA = 1 1.5 8 µV/°C
PGA = 2 1.0 4 µV/°C
PGA = 4 0.7 2 µV/°C
PGA = 8 0.6 2 µV/°C
Gain Error 0.01 0.1 %
Gain Error Drift 2 ppm/°C
Common-Mode Rejection At DC, PGA = 8 94 100 dB
At DC, PGA = 1 85 dB
DIGITAL INPUT/OUTPUT
Logic Level
V
IH
0.7 • V
DD
6V
V
IL
GND – 0.5 0.3 • V
DD
V
V
OL
I
OL
= 3mA GND 0.4 V
Input Leakage
I
IH
V
IH
= 5.5V 10 µA
I
IL
V
IL
= GND –10 µA
POWER-SUPPLY REQUIREMENTS
Power-Supply Voltage V
DD
2.7 5.5 V
Supply Current Power Down 0.05 2 µA
Active Mode 90 150 µA
Power Dissipation
V
DD
= 5.0V 450 750 µW
V
DD
= 3.0V 210 µW
NOTES: (1) 99% of full-scale. (2) FSR = Full-Scale Range = 2 • V
DD
/PGA.
ELECTRICAL CHARACTERISTICS
All specifications at –40°C to +85°C, V
DD
= 5V, GND = 0V, and all PGAs, unless otherwise noted.