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ADS1148IPWR Datasheet(PDF) 7 Page - Texas Instruments |
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ADS1148IPWR Datasheet(HTML) 7 Page - Texas Instruments |
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7 / 50 page  ADS1146 ADS1147 ADS1148 www.ti.com SBAS453C – JULY 2009 – REVISED APRIL 2010 ADS1148 (TSSOP-28) 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 0, or REFP0/GPIO0 5 Digital in/out general-purpose digital input/output pin 0 Analog input Negative external reference 0 input, or REFN0/GPIO1 6 Digital in/out general-purpose digital input/output pin 1 REFP1 7 Analog input Positive external reference 1 input REFN1 8 Analog input Negative external reference 1 input VREFOUT 9 Analog output Positive internal reference voltage output Negative internal reference voltage output. Connect this pin to AVSS when using a unipolar VREFCOM 10 Analog output supply, or to the midvoltage of the power supply when using a bipolar supply. AIN0/IEXC 11 Analog input Analog input 0, optional excitation current output AIN1/IEXC 12 Analog input Analog input 1, optional excitation current output Analog input Analog input 4, optional excitation current output, or AIN4/IEXC/GPIO4 13 Digital in/out general-purpose digital input/output pin 4 Analog input Analog input 5, optional excitation current output, or AIN5/IEXC/GPIO5 14 Digital in/out general-purpose digital input/output pin 5 Analog input Analog input 6, optional excitation current output, or AIN6/IEXC/GPIO6 15 Digital in/out general-purpose digital input/output pin 6 Analog input Analog input 7, optional excitation current output, or AIN7/IEXC/GPIO7 16 Digital in/out general-purpose digital input/output pin 7 Analog input Analog input 2, optional excitation current output, or AIN2/IEXC/GPIO2 17 Digital in/out general-purpose digital input/output pin 2 Analog input Analog input 3, optional excitation current output, or AIN3/IEXC/GPIO3 18 Digital in/out general-purpose digital input/output pin 3 IEXC2 19 Analog output Excitation current output 2 IEXC1 20 Analog output Excitation current output 1 AVSS 21 Analog Negative analog power supply AVDD 22 Analog Positive analog power supply START 23 Digital input Conversion start. See text for complete description. CS 24 Digital input Chip select (active low) DRDY 25 Digital output Data ready (active low) Serial data out output, or DOUT/DRDY 26 Digital output data out combined with data ready (active low when DRDY function enabled) DIN 27 Digital input Serial data input SCLK 28 Digital input Serial clock input Copyright © 2009–2010, Texas Instruments Incorporated Submit Documentation Feedback 7 Product Folder Link(s): ADS1146 ADS1147 ADS1148 |
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