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ADS1258IRTCTG4 Datasheet(PDF) 5 Page - Texas Instruments |
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ADS1258IRTCTG4 Datasheet(HTML) 5 Page - Texas Instruments |
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5 / 54 page  36 35 34 33 32 31 30 29 28 27 26 25 AIN12 AIN13 AIN14 AIN15 AINCOM VR EFP VR EFN DGND DV DD CS START DRDY 1 2 3 4 5 6 7 8 9 10 11 12 AIN3 AIN2 AIN1 AIN0 AV SS AVD D PLLC AP XTAL1 XTAL2 PWDN RESET CL KSEL 48 47 46 45 44 43 42 41 40 39 38 13 14 15 16 17 18 19 20 21 22 23 37 24 ADS1258 ADS1258 www.ti.com SBAS297G – JUNE 2005 – REVISED MARCH 2011 PIN CONFIGURATION RTC PACKAGE QFN-48 (TOP VIEW) PIN ASSIGNMENTS ANALOG/DIGITAL PIN # NAME INPUT/OUTPUT DESCRIPTION 1 AIN3 Analog Input Analog Input 3: Single-Ended Channel 3, Differential Channel 1 ( –) 2 AIN2 Analog Input Analog Input 2: Single-Ended Channel 2, Differential Channel 1 (+) 3 AIN1 Analog Input Analog Input 1: Single-Ended Channel 1, Differential Channel 0 ( –) 4 AIN0 Analog Input Analog Input 0: Single-Ended Channel 0, Differential Channel 0 (+) Negative Analog Power Supply: 0V for unipolar operation, –2.5V for bipolar operation. 5 AVSS Analog (Internally connected to exposed thermal pad of QFN package.) 6 AVDD Analog Positive Analog Power Supply: +5V for unipolar operation, +2.5V for bipolar operation. 7 PLLCAP Analog PLL Bypass Capacitor: Connect 22nF capacitor to AVSS when using crystal oscillator. 8 XTAL1 Analog 32.768kHz Crystal Oscillator Input 1; see Crystal Oscillator section. 9 XTAL2 Analog 32.768kHz Crystal Oscillator Input 2; see Crystal Oscillator section. 10 PWDN Digital Input Power-Down Input: Hold low for minimum of two fCLK cycles to engage low-power mode. 11 RESET Digital Input Reset Input: Hold low for minimum of two fCLK cycles to reset the device. Clock Select Input: Low = Activates Crystal Oscillator, fCLK output on CLKIO. 12 CLKSEL Digital Input High = Disables Crystal Oscillator, apply fCLK to CLKIO. 13 CLKIO Digital I/O System Clock Input/Output (See CLKSEL pin.) 14 GPIO0 Digital I/O General-Purpose Digital Input/Output 0 15 GPIO1 Digital I/O General-Purpose Digital Input/Output 1 16 GPIO2 Digital I/O General-Purpose Digital Input/Output 2 17 GPIO3 Digital I/O General-Purpose Digital Input/Output 3 18 GPIO4 Digital I/O General-Purpose Digital Input/Output 4 19 GPIO5 Digital I/O General-Purpose Digital Input/Output 5 Copyright © 2005–2011, Texas Instruments Incorporated Submit Documentation Feedback 5 Product Folder Link(s): ADS1258 |
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