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AD9050BRS-60 Arkusz danych(PDF) 4 Page - Analog Devices |
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AD9050BRS-60 Arkusz danych(HTML) 4 Page - Analog Devices |
4 / 12 page AD9050 –4– REV. B Table I. AD9050 Digital Coding (Single Ended Input AIN, AINB Bypassed to GND) OR Digital Output Analog Input Voltage Level (Out of Range) MSB . . . LSB 3.813 Positive Full Scale + 1 LSB 1 1111111111 3.300 Midscale 0 0111111111 2.787 Negative Full Scale – 1 LSB 1 0000000000 PIN FUNCTION DESCRIPTIONS Pin No Name Function 1, 7, 12, 21, 23 GND Ground. 2, 8, 11 VD Analog +5 V ± 5% power supply. 3VREFOUT Internal bandgap voltage reference (nominally +2.5 V). 4 VREFIN Input to reference amplifier. Voltage reference for ADC is connected here. 5 COMP Internal compensation pin, 0.1 µF bypass connected here to V D (+5 V). 6 REFBP External connection for (0.1 µF) reference bypass capacitor. 9 AINB Complementary analog input pin (Analog input bar). 10 AIN Analog input pin. 13 ENCODE Encode clock input to ADC. Internal T/H is placed in hold mode (ADC is encoding) on rising edge of encode signal. 14 OR Out of range signal. Logic “0” when analog input is in nominal range. Logic “1” when analog input is out of nominal range. 15 D9 (MSB) Most significant bit of ADC output. 16–19 D8–D5 Digital output bits of ADC. 20, 22 VDD Digital output power supply (only used by digital outputs). 24–27 D4–D1 Digital output bits of ADC. 28 D0 (LSB) Least significant bit of ADC output. PIN CONFIGURATION 14 13 12 11 10 9 8 1 2 3 4 7 6 5 17 16 15 20 19 18 28 27 26 25 24 23 22 21 TOP VIEW (Not to Scale) AD9050 GND D3 D2 D1 D0 (LSB) VD VREFOUT VREFIN VDD GND D4 COMP REFBP GND VD AINB AIN D5 VDD GND VD GND ENCODE OR D6 D9 (MSB) D8 D7 WARNING! ESD SENSITIVE DEVICE CAUTION ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the human body and test equipment and can discharge without detection. Although the AD9050 features proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance degradation or loss of functionality. |
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