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