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ADS1246IPWR Datasheet(PDF) 39 Page - Texas Instruments

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Part # ADS1246IPWR
Description  24-Bit Analog-to-Digital Converters for Temperature Sensors
PDF  60 Pages
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

ADS1246IPWR Datasheet(HTML) 39 Page - Texas Instruments

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ADS1247 and ADS1248 DETAILED REGISTER DEFINITIONS
ADS1246
ADS1247
ADS1248
www.ti.com .................................................................................................................................................. SBAS426C – AUGUST 2008 – REVISED AUGUST 2009
MUX0—Multiplexer Control Register 0. This register allows any combination of differential inputs to be selected
on any of the input channels. Note that this setting can be superceded by the MUXCAL and VBIAS bits.
MUX0 - ADDRESS 00h
RESET VALUE = 01h
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
BCS1
BCS0
MUX_SP2
MUX_SP1
MUX_SP0
MUX_SN2
MUX_SN1
MUX_SN0
Bits 7:6
BCS1:0
These bits select the magnitude of the sensor detect current source.
00 = Burnout current source off (default)
01 = Burnout current source on, 0.5
µA
10 = Burnout current source on, 2
µA
11 = Burnout current source on, 10
µA
Bits 5:3
MUX_SP2:0
Positive input channel selection bits.
000 = AIN0 (default)
001 = AIN1
010 = AIN2
011 = AIN3
100 = AIN4 (ADS1248 only)
101 = AIN5 (ADS1248 only)
110 = AIN6 (ADS1248 only)
111 = AIN7 (ADS1248 only)
Bits 2:0
MUX_SN2:0
Negative input channel selection bits.
000 = AIN0
001 = AIN1 (default)
010 = AIN2
011 = AIN3
100 = AIN4 (ADS1248 only)
101 = AIN5 (ADS1248 only)
110 = AIN6 (ADS1248 only)
111 = AIN7 (ADS1248 only)
VBIAS—Bias Voltage Register
VBIAS - ADDRESS 01h
RESET VALUE = 00h
DEVICE
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
ADS1248
VBIAS7
VBIAS6
VBIAS5
VBIAS4
VBIAS3
VBIAS2
VBIAS1
VBIAS0
ADS1247
0
0
0
0
VBIAS3
VBIAS2
VBIAS1
VBIAS0
Bits 7:0
VBIAS7:0
These bits apply a bias voltage of midsupply (AVDD + AVSS)/2 to the selected analog input.
0 = Bias voltage not enabled (default)
1 = Bias voltage is applied on the corresponding analog input (bit 0 corresponds to AIN0, etc.).
Copyright © 2008–2009, Texas Instruments Incorporated
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Product Folder Link(s): ADS1246 ADS1247 ADS1248



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