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ADC16061 Datasheet(PDF) 4 Page - National Semiconductor (TI) |
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ADC16061 Datasheet(HTML) 4 Page - National Semiconductor (TI) |
4 / 20 page Pin Descriptions and Equivalent Circuits (Continued) Digital I/O 10 CLOCK Digital clock input. The input voltage is captured t AD after the fall of the clock signal. The range of frequencies for this input is 300 kHz to 2.5 MHz. The clock frequency should not be changed or interrupted during conversion or while reading data output. 11 CAL CAL is a level-sensitive digital input that, when pulsed high for at least two clock cycles, puts the ADC into the CALIBRATE mode. Calibration should be performed upon ADC power-up (after asserting a reset) and each time the temperature changes by more than 50˚C since the ADC16061 was last calibrated. See Section 2.3 for more information. 40 RESET RESET is a level-sensitive digital input that, when pulsed high for at least 2 CLOCK cycles, results in the resetting of the ADC. This reset pulse must be applied after ADC power-up, before calibration. 18 RD RD is the (READ) digital input that, when low, enables the output data buffers. When this input pin is high, the output data bus is in a high impedance state. 44 PD PD is the Power Down input that, when low, puts the converter into the power down mode. When this pin is high, the converter is in the active mode. 17 EOC EOC is a digital output that, when low, indicates the availability of new conversion results at the data output pins. 21-32 35-38 D00-15 Digital data outputs that make up the 16-bit TRI-STATE conversion results. D00 is the LSB, while D15 is the MSB (SIGN bit) of the two’s complement output word. Analog Power 6, 7, 45 V A Positive analog supply pins. These pins should be connected to a clean, quiet +5V source and bypassed to AGND with 0.1 µF monolithic capacitors in parallel with 10 µF capacitors, both located within 1 cm of these power pins. 5, 8, 46 AGND The ground return for the analog supply. AGND and DGND should be connected together directly beneath the ADC16061 package. See Section 5 (Layout and grounding) for more details). www.national.com 4 |
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