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ADS1118IDGST Datasheet(PDF) 3 Page - Texas Instruments

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Part # ADS1118IDGST
Description  Ultra-Small, Low-Power, SPI??Compatible, 16-Bit Analog-to-Digital Converter and Temperature Sensor with Internal Reference
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

ADS1118IDGST Datasheet(HTML) 3 Page - Texas Instruments

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ADS1118
www.ti.com
SBAS457D – OCTOBER 2010 – REVISED OCTOBER 2013
ELECTRICAL CHARACTERISTICS
Maximum and minimum specifications are at TA = –40°C to +125°C, unless otherwise noted. Typical values are at TA =
+25°C. All specifications are at VDD = 3.3 V, data rate = 8 SPS, and full-scale (FS) = ±2.048 V, unless otherwise noted.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
ANALOG INPUT
Full-scale input voltage range(1)
VIN = (AINP) – (AINN)
See Table 2
Analog input voltage
AINP or AINN to GND
GND
VDD
V
Differential input impedance
See Table 1
FS = ±6.144 V(1)
8
M
FS = ±4.096 V(1), ±2.048 V
6
M
Common-mode input impedance
FS = ±1.024 V
3
M
FS = ±0.512V, ±0.256 V
100
M
SYSTEM PERFORMANCE
Resolution
No missing codes
16
Bits
Data rate (DR)
8, 16, 32, 64, 128, 250, 475, 860
SPS
Data rate variation
All data rates
–10
10
%
Output noise
See Typical Characteristics
Integral nonlinearity
DR = 8 SPS, FS = ±2.048 V(2)
1
LSB
FS = ±2.048 V, differential inputs
±0.1
±2
LSB
Offset error
FS = ±2.048 V, single-ended inputs
±0.25
LSB
Offset drift
FS = ±2.048 V
0.002
LSB/°C
Offset power-supply rejection
FS = ±2.048 V, with dc supply variation
0.2
LSB/V
Gain error(3)
FS = ±2.048 V at TA = +25°C
0.01
0.15
%
FS = ±0.256 V
7
ppm/°C
Gain drift(3)(4)
FS = ±2.048 V
5
40
ppm/°C
FS = ±6.144 V(1)
5
ppm/°C
Gain power-supply rejection
10
ppm/V
PGA gain match(3)
Match between any two PGA gains
0.01
0.1
%
Gain match
Match between any two inputs
0.01
0.1
%
Offset match
Match between any two inputs
0.6
LSB
At dc and FS = ±0.256 V
105
dB
At dc and FS = ±2.048 V
100
dB
Common-mode rejection
At dc and FS = ±6.144 V(1)
90
dB
fCM = 50 Hz, DR = 860 SPS
105
dB
fCM = 60 Hz, DR = 860 SPS
105
dB
TEMPERATURE SENSOR
Temperature sensor range
–40
+125
°C
Temperature sensor resolution
0.03125
°C/LSB
TA = 0°C to +70°C
0.2
±0.5
°C
Temperature sensor accuracy
TA = –40°C to +125°C
0.4
±1
°C
vs supply
0.03125
±0.25
°C/V
(1)
This parameter expresses the full-scale range of the ADC scaling. In no event should more than VDD + 0.3 V or 5.5 V (whichever is
smaller) be applied to this device.
(2)
Best-fit INL; covers 99% of full-scale.
(3)
Includes all errors from onboard PGA and reference.
(4)
Not production tested; ensured by characterization.
Copyright © 2010–2013, Texas Instruments Incorporated
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