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AMC7823 Datasheet(PDF) 9 Page - Texas Instruments |
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AMC7823 Datasheet(HTML) 9 Page - Texas Instruments |
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9 / 48 page  www.ti.com AMC7823 SLAS453A – APRIL 2005 – REVISED OCTOBER 2005 TERMINAL FUNCTIONS (continued) TERMINAL DESCRIPTION NO. NAME 12 CH1 Analog input channel 1 13 CH2 Analog input channel 2 14 CH3 Analog input channel 3 15 AGND Analog ground 16 AVDD Analog power supply, +3 V to +5 V. Must be the same value as DVDD. 17 CH4 Analog input channel 4 18 CH5 Analog input channel 5 19 CH6 Analog input channel 6 20 CH7 Analog input channel 7 When external reference connects here, the internal reference is overridden. When internal reference 21 EXT_REF_IN is selected, this pin works as output of the internal reference (with 10-k Ω output impedance). See Reference section for details. 22 DAC-4_OUT Output of DAC-4 23 DAC-5_OUT Output of DAC-5 24 DAC-6_OUT Output of DAC-6 25 DAC-7_OUT Output of DAC-7 26 RESET Reset input. Logic low on this pin causes the part to perform hardware reset. 27 GPIO-0/ALR0 Multiple function I/O pin. Works as digital I/O or ALR pin of the first analog input. 28 GPIO-1/ALR1 Multiple function I/O pin. Works as digital I/O or ALR pin of the second analog input. 29 GPIO-2/ALR2 Multiple function I/O pin. Works as digital I/O or ALR pin of the third analog input. 30 GPIO-3/ALR3 Multiple function I/O pin. Works as digital I/O or ALR pin of the fourth analog input. External conversion trigger. The rising edge starts sampling and conversion of the ADC when 31 CONVERT external trigger mode is selected. 32 SCLK Serial clock input 33 MOSI Master out, slave in. Digital data input for the serial interface 34 MISO Master in, slave out. Digital data output for the serial interface Slave select input (active low). Data is not clocked into MOSI unless SS is low. When SS is high, 35 SS MISO is in high-impedance status. 36 BVDD Interface power supply. Connects to 3 V for 3-V logic; connects to 5 V for 5-V logic. 37 DVDD Digital power supply (+3 V to +5 V). Must be the same value as AVDD. 38 DGND Digital ground 39 GPIO4 General-purpose digital I/O pin 40 GPIO5 General-purpose digital I/O pin 9 |
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