поискавой системы для электроныых деталей |
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ADC08B3000 датащи(PDF) 3 Page - National Semiconductor (TI) |
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ADC08B3000 датащи(HTML) 3 Page - National Semiconductor (TI) |
3 / 32 page Pin Descriptions and Equivalent Circuits Pin Functions Pin No. Symbol Equivalent Circuit Description 3 SCLK Serial Interface Clock. When the extended control mode is enabled, this pin functions as the SCLK input which clocks in the serial data.See Section 1.2 for details on the extended control mode. See Section 1.3 for description of the serial interface. When not in extended control mode, tie to ground. 4 OutEdge / DDR / SDATA Edge Select, Double Data Rate Enable and Serial Data Input. This input sets the edge of DRDY at which the output data transitions. (See Section 1.1.5.2). When this pin is floating or connected to 1/2 the supply voltage, DDR clocking is enabled. When the extended control mode is enabled, this pin functions as the SDATA input. See Section 1.2 for details on the extended control mode. See Section 1.3 for description of the serial interface. 15 ADCCLK_RST ADC Sample Clock Reset. A positive pulse on this pin is used to reset and synchronize the ADC sampling clock. 26 PD Power Down Pins. A logic high on the PD pin puts the entire device into the Power Down Mode. 30 CAL Calibration Cycle Initiate. A minimum 80 input clock cycles logic low followed by a minimum of 80 input clock cycles high on this pin initiates the self calibration sequence. See Section 2.4.2 for an overview of self-calibration and Section 2.4.2.2 for a description of on-command calibration. 14 FSR/ECE Full Scale Range Select and Extended Control Enable. In non-extended control mode, a logic low on this pin sets the full-scale differential input range to 600 mV P-P. A logic high on this pin sets the full-scale differential input range to 800 mV P-P. See Section 1.1.4. To enable the extended control mode, whereby the serial interface and control registers are employed, allow this pin to float or connect it to a voltage equal to V A/2. See Section 1.2 for information on the extended control mode. 127 CalDly / SCS Calibration Delay and Serial Interface Chip Select. With a logic high or low on pin 14, this pin functions as Calibration Delay and sets the number of input clock cycles after power up before calibration begins (See Section 1.1.1). With pin 14 floating, this pin acts as the enable pin for the serial interface input and the CalDly value becomes "0" (short delay with no provision for a long power-up calibration delay). 10 11 CLK+ CLK- LVDS Clock input pins for the ADC. The differential clock signal must be a.c. coupled to these pins. The input signal is sampled on the falling edge of CLK+. See Section 1.1.2 for a description of acquiring the input and Section 2.3 for an overview of the clock inputs. www.national.com 3 |
Аналогичный номер детали - ADC08B3000 |
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Аналогичное описание - ADC08B3000 |
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