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công cụ tìm kiếm bảng dữ liệu linh kiện điện tử |
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ADS820U bảng dữ liệu(PDF) 4 Page - Texas Instruments |
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ADS820U bảng dữ liệu(HTML) 4 Page - Texas Instruments |
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4 / 20 page  www.ti.com ADS820 4 SBAS037B PIN DESIGNATOR DESCRIPTION 1 GND Ground 2 B1 Bit 1, Most Significant Bit (MSB) 3 B2 Bit 2 4 B3 Bit 3 5 B4 Bit 4 6 B5 Bit 5 7 B6 Bit 6 8 B7 Bit 7 9 B8 Bit 8 10 B9 Bit 9 11 B10 Bit 10, Least Significant Bit (LSB) 12 DNC Do not connect. 13 DNC Do not connect. 14 GND Ground 15 +VS +5V Power Supply 16 CLK Convert Clock Input, 50% Duty Cycle 17 +VS +5V Power Supply 18 OE HIGH: High Impedance State. LOW or Floating: Normal Operation. Internal pull-down resistor. 19 MSBI Most Significant Bit Inversion, HIGH: MSB in- verted for complementary output. LOW or Float- ing: Straight output. Internal pull-down resistor. 20 +VS +5V Power Supply 21 REFB Bottom Reference Bypass. For external bypass- ing of internal +1.25V reference. 22 CM Common-Mode Voltage. It is derived by (REFT + REFB)/2. 23 REFT Top Reference Bypass. For external bypassing of internal +3.25V reference. 24 +VS +5V Power Supply 25 GND Ground 26 IN Input 27 IN Complementary Input 28 GND Ground PIN DESCRIPTIONS PIN CONFIGURATION Top View SO GND Bit 1(MSB) Bit 2 Bit 3 Bit 4 Bit 5 Bit 6 Bit 7 Bit 8 Bit 9 Bit 10 (LSB) DNC DNC GND GND IN IN GND +V S REFT CM REFB +V S MSBI OE +V S CLK +V S 1 2 3 4 5 6 7 8 9 10 11 12 13 14 28 27 26 25 24 23 22 21 20 19 18 17 16 15 ADS820 DNC: Do Not Connect TIMING DIAGRAM SYMBOL DESCRIPTION MIN TYP MAX UNITS tCONV Convert Clock Period 50 100 µsns tL Clock Pulse LOW 24 25 ns tH Clock Pulse HIGH 24 25 ns tD Aperture Delay 2 ns t1 Data Hold Time, CL = 0pF 3.9 ns t2 New Data Delay Time, CL = 15pF max 12.5 ns Track Hold "N" Hold "N + 1" Hold "N + 2" Hold "N + 3" Hold "N + 4" Hold "N + 5" Hold "N + 6" Track Data Valid N – 7 Data Valid N – 6 Internal Track-and-Hold Convert Clock Output Data t D t 2 t 1 Data Latency (6.5 Clock Cycles) t CONV t L t H Track Track Track Track N – 3 N – 5N – 4N – 2N – 1 N Track Track Data Valid N – 8 (1) Data Invalid NOTE: (1) “ ” indicates the portion of the waveform that will stretch out at slower sample rates. |
Số phần tương tự - ADS820U |
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Mô tả tương tự - ADS820U |
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