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ADS1248 Datasheet(PDF) 8 Page - Texas Instruments |
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ADS1248 Datasheet(HTML) 8 Page - Texas Instruments |
8 / 70 page 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 SBAS426G – AUGUST 2008 – REVISED OCTOBER 2011 www.ti.com 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 REFP0/GPIO0 5 Positive external reference input, or general-purpose digital input/output pin 0 Digital in/out Analog input REFN0/GPIO1 6 Negative external reference input, or general-purpose digital input/output pin 1 Digital in/out 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 AIN2/IEXC/GPIO2 11 Analog input 2, optional excitation current output, or general-purpose digital input/output pin 2 Digital in/out Analog input Analog input 3, with or without excitation current output, or general-purpose digital input/output AIN3/IEXC/GPIO3 12 Digital in/out 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 8 Submit Documentation Feedback Copyright © 2008–2011, Texas Instruments Incorporated Product Folder Link(s): ADS1246 ADS1247 ADS1248 |
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