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ADS1113IDGSR Datasheet(PDF) 26 Page - Texas Instruments

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Part No. ADS1113IDGSR
Description  Ultra-Small, Low-Power, 16-Bit Analog-to-Digital Converter with Internal Reference
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Maker  TI [Texas Instruments]
Homepage  http://www.ti.com
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ADS1113IDGSR Datasheet(HTML) 26 Page - Texas Instruments

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0.1 F(typ)
m
VDD
5
10
1
2
3
4
ADDR
ALERT/RDY
GND
AIN0
AIN1
SCL
9
8
7
6
SDA
VDD
AIN3
AIN2
ADS1115
InputsSelected
fromConfiguration
Register
OutputCodes
0 32767
-
ADS1113
ADS1114
ADS1115
SBAS444A – MAY 2009 – REVISED AUGUST 2009 ......................................................................................................................................................... www.ti.com
SINGLE-ENDED INPUTS
The ADS1115 input range is bipolar differential with
respect to the reference. The single-ended circuit
Although the ADS1115 has two differential inputs, the
shown in Figure 37 covers only half the ADS1115
device can easily measure four single-ended signals.
input scale because it does not produce differentially
Figure 37 shows a single-ended connection scheme.
negative inputs; therefore, one bit of resolution is lost.
The
ADS1115
is
configured
for
single-ended
measurement by configuring the MUX to measure
each channel with respect to ground. Data are then
read out of one input based on the selection on the
configuration register. The single-ended signal can
range from 0V to supply. The ADS1115 loses no
linearity anywhere within the input range. Negative
voltages cannot be applied to this circuit because the
ADS1115 can only accept positive voltages.
NOTE: Digital and address pin connections omitted for clarity.
Figure 37. Measuring Single-Ended Inputs
26
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Copyright © 2009, Texas Instruments Incorporated
Product Folder Link(s): ADS1113 ADS1114 ADS1115


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