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ADC128S022CIMT-NOPB bảng dữ liệu(PDF) 2 Page - Texas Instruments |
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ADC128S022CIMT-NOPB bảng dữ liệu(HTML) 2 Page - Texas Instruments |
2 / 26 page IN0 IN7 MUX T/H ADC128S022 SCLK VA AGND DGND VD CS DIN DOUT CONTROL LOGIC 12-BIT SUCCESSIVE APPROXIMATION ADC . . . AGND ADC128S022 SNAS334E – AUGUST 2005 – REVISED MARCH 2013 www.ti.com Block Diagram Pin Descriptions and Equivalent Circuits Pin No. Symbol Equivalent Circuit Description ANALOG I/O 4 - 11 IN0 to IN7 Analog inputs. These signals can range from 0V to VREF. DIGITAL I/O Digital clock input. The specified performance range of frequencies 16 SCLK for this input is 0.8 MHz to 3.2 MHz. This clock directly controls the conversion and readout processes. Digital data output. The output samples are clocked out of this pin on 15 DOUT the falling edges of the SCLK pin. Digital data input. The ADC128S022's Control Register is loaded 14 DIN through this pin on rising edges of the SCLK pin. Chip select. On the falling edge of CS, a conversion process begins. 1 CS Conversions continue as long as CS is held low. POWER SUPPLY Positive analog supply pin. This voltage is also used as the reference voltage. This pin should be connected to a quiet +2.7V to 2 VA +5.25V source and bypassed to GND with 1 µF and 0.1 µF monolithic ceramic capacitors located within 1 cm of the power pin. Positive digital supply pin. This pin should be connected to a +2.7V 13 VD to VA supply, and bypassed to GND with a 0.1 µF monolithic ceramic capacitor located within 1 cm of the power pin. 3 AGND The ground return for the analog supply and signals. 12 DGND The ground return for the digital supply and signals. These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates. 2 Submit Documentation Feedback Copyright © 2005–2013, Texas Instruments Incorporated Product Folder Links: ADC128S022 |
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