Datasheet

ADS1013
ADS1014
ADS1015
www.ti.com SBAS473C –MAY 2009–REVISED OCTOBER 2009
ELECTRICAL CHARACTERISTICS
All specifications at –40°C to +125°C, VDD = 3.3V, and Full-Scale (FS) = ±2.048V, unless otherwise noted.
Typical values are at +25°C.
ADS1013, ADS1014, ADS1015
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
ANALOG INPUT
Full-scale input voltage
(1)
V
IN
= (AIN
P
) – (AIN
N
) ±4.096/PGA V
Analog input voltage AIN
P
or AIN
N
to GND GND VDD V
Differential input impedance See Table 2
FS = ±6.144V
(1)
10 MΩ
FS = ±4.096V
(1)
, ±2.048V 6 MΩ
Common-mode input impedance
FS = ±1.024V 3 MΩ
FS = ±0.512V, ±0.256V 100 MΩ
SYSTEM PERFORMANCE
Resolution No missing codes 12 Bits
128, 250,
490, 920,
Data rate (DR) SPS
1600, 2400,
3300
Data rate variation All data rates –10 10 %
Output noise See Typical Characteristics
Integral nonlinearity DR = 128SPS, FS = ±2.048V, best fit
(2)
0.5 LSB
FS = ±2.048V, differential inputs 0 ±0.5 LSB
Offset error
FS = ±2.048V, single-ended inputs ±0.25 LSB
Offset drift FS = ±2.048V 0.005 LSB/°C
Gain error
(3)
FS = ±2.048V at 25°C 0.05 0.25 %
FS = ±0.256V 7 ppm/°C
Gain drift
(3)
FS = ±2.048V 5 40 ppm/°C
FS = ±6.144V
(1)
5 ppm/°C
PGA gain match
(3)
Match between any two PGA gains 0.02 0.1 %
Gain match Match between any two inputs 0.05 0.1 %
Offset match Match between any two inputs 0.25 LSB
DIGITAL INPUT/OUTPUT
Logic level
V
IH
0.7VDD 5.5 V
V
IL
GND – 0.5 0.3VDD V
V
OL
I
OL
= 3mA GND 0.15 0.4 V
Input leakage
I
H
V
IH
= 5.5V 10 μA
I
L
V
IL
= GND 10 μA
(1) This parameter expresses the full-scale range of the ADC scaling. In no event should more than VDD + 0.3V be applied to this device.
(2) 99% of full-scale.
(3) Includes all errors from onboard PGA and reference.
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Product Folder Link(s): ADS1013 ADS1014 ADS1015