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ADS1248IPWR Datasheet(PDF) 7 Page - Texas Instruments

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Part # ADS1248IPWR
Description  24-Bit Analog-to-Digital Converters for Temperature Sensors
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

ADS1248IPWR Datasheet(HTML) 7 Page - Texas Instruments

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DVDD
DGND
CLK
RESET
REFP0/GPIO0
REFN0/GPIO1
VREFOUT
VREFCOM
AIN0/IEXC
AIN1/IEXC
SCLK
DIN
DOUT/DRDY
DRDY
CS
START
AVDD
AVSS
AIN3/IEXC/GPIO3
AIN2/IEXC/GPIO2
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
ADS1247
ADS1246
ADS1247
ADS1248
www.ti.com .................................................................................................................................................. SBAS426C – AUGUST 2008 – REVISED AUGUST 2009
PW PACKAGE
TSSOP-20
(TOP VIEW)
ADS1247 (TSSOP-20) PIN DESCRIPTIONS
NAME
PIN NO.
FUNCTION
DESCRIPTION
DVDD
1
Digital
Digital power supply
DGND
2
Digital
Digital ground
CLK
3
Digital input
External clock input. Tie this pin to DGND to activate the internal oscillator.
RESET
4
Digital input
Chip reset (active low). Returns all register values to reset values.
Analog input
Positive external reference input, or
REFP0/GPIO0
5
Digital in/out
general-purpose digital input/output pin 0
Analog input
Negative external reference input, or
REFN0/GPIO1
6
Digital in/out
general-purpose digital input/output pin 1
VREFOUT
7
Analog output
Positive internal reference voltage output
Negative internal reference voltage output. Connect this pin to AVSS when using a unipolar
VREFCOM
8
Analog output
supply, or to the midvoltage of the power supply when using a bipolar supply.
AIN0/IEXC
9
Analog input
Analog input 0, optional excitation current output
AIN1/IEXC
10
Analog input
Analog input 1, optional excitation current output
Analog input
Analog input 2, optional excitation current output, or
AIN2/IEXC/GPIO2
11
Digital in/out
general-purpose digital input/output pin 2
Analog input
Analog input 3, with or without excitation current output, or
AIN3/IEXC/GPIO3
12
Digital in/out
general-purpose digital input/output pin 3
AVSS
13
Analog
Negative analog power supply
AVDD
14
Analog
Positive analog power supply
START
15
Digital input
Conversion start. See text for description of use.
CS
16
Digital input
Chip select (active low)
DRDY
17
Digital output
Data ready (active low)
Serial data out output, or
DOUT/DRDY
18
Digital output
Data out combined with Data Ready (active low when DRDY function enabled)
DIN
19
Digital input
Serial data input
SCLK
20
Digital input
Serial clock input
Copyright © 2008–2009, Texas Instruments Incorporated
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Product Folder Link(s): ADS1246 ADS1247 ADS1248


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