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ADS1204IRHBT bảng dữ liệu(PDF) 6 Page - Texas Instruments |
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ADS1204IRHBT bảng dữ liệu(HTML) 6 Page - Texas Instruments |
6 / 21 page ADS1204 SBAS301A − OCTOBER 2003 − REVISED JUNE 2004 www.ti.com 6 PIN ASSIGNMENTS QFN PACKAGE (TOP VIEW) CH A+ CH A − CH B+ CH B − CH C − CH C+ CH D − CH D+ OUT A OUT B OUT C OUT D CLKOUT BGND BV DD CLKIN 1 2 3 4 5 6 7 8 24 23 22 21 20 19 18 17 ADS1204 Terminal Functions TERMINAL NAME NO. I/O DESCRIPTION CH A+ 1 AI Analog input of channel A: noninverting input CH A− 2 AI Analog input of channel A: inverting input CH B+ 3 AI Analog input of channel B: noninverting input CH B− 4 AI Analog input of channel B: inverting input CH C− 5 AI Analog input of channel C: inverting input CH C+ 6 AI Analog input of channel C: noninverting input CH D− 7 AI Analog input of channel D: inverting input CH D+ 8 AI Analog input of channel D: noninverting input REFIN D 9 AI Reference voltage input of channel D: pin for external reference voltage REFIN C 10 AI Reference voltage input of channel C: pin for external reference voltage AGND 11 Analog ground AVDD 12 P Analog power supply; nominal 5V NC 13 No connection; this pin is left unconnected AVDD 14 P Analog power supply; nominal 5V AGND 15 Analog ground CLKSEL 16 I Clock select between internal clock (CLKSEL = 1) or external clock (CLKSEL = 0) TERMINAL NAME NO. I/O DESCRIPTION CLKIN 17 I External clock input BVDD 18 P Digital interface power supply; from 2.7V to 5.5V BGND 19 Interface ground CLKOUT 20 O System clock output OUT D 21 O Bit stream from channel D modulator OUT C 22 O Bit stream from channel C modulator OUT B 23 O Bit stream from channel B modulator OUT A 24 O Bit stream from channel A modulator NC 25 No connection; this pin is left unconnected AGND 26 Analog ground AVDD 27 P Analog power supply; nominal 5V REFOUT 28 AO Reference voltage output: output pin of the internal reference source; nominal 2.5V AVDD 29 P Analog power supply; nominal 5V AGND 30 Analog ground REFIN B 31 AI Reference voltage input of channel B: pin for external reference voltage REFIN A 32 AI Reference voltage input of channel A: pin for external reference voltage NOTE: AI = Analog Input; AO = Analog Output; I = Input; O = Output; P = Power Supply. |
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