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AD9012SE bảng dữ liệu(PDF) 4 Page - Analog Devices |
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4 / 8 page REV. D AD9012 –4– PIN FUNCTION DESCRIPTIONS Pin # Name Description 11 DIGITAL +VS One of three positive digital supply pins (nominally +5.0 V). 12 OVERFLOW INH OVERFLOW INHIBIT controls the data output coding for overvoltage inputs (AIN ≥ + V REF). 13 HYSTERESIS The Hysteresis control voltage varies the comparator hysteresis from 0 mV to 10 mV, for a change from –5.2 V to –2.2 V at the Hysteresis control pin. 14+VREF The most positive reference voltage for the internal resistor ladder. 15 ANALOG INPUT One of two analog input pins. Both analog input pins should be connected together. 16 ANALOG GROUND One of two analog ground pins. Both analog ground pins should be connected together. 17 ENCODE TTL level encode command input. ENCODE is rising edge sensitive. 18 DIGITAL +VS One of three positive digital supply pins (nominally +5.0 V). 19 ANALOG GROUND One of two analog ground pins. Both analog ground pins should be connected together. 10 ANALOG INPUT One of two analog input pins. Both analog inputs should be connected together. 11 –VREF The most negative reference voltage for the internal resistor ladder. 12 REFMID The midpoint tap on the internal resistor ladder. 13 DIGITAL +VS One of three positive digital supply pins (nominally +5.0 V). 14 DIGITAL –VS One of two negative digital supply pins (nominally –5.2 V). Both digital supply pins should be connected together. 15 D1 (LSB) Digital data output. D1 (LSB) is the least significant bit of the digital output word. 16–19 D2–D5 Digital data output. 20 DIGITAL GROUND One of two digital ground pins. Both digital grounds pins should be connected together. 21, 22 ANALOG –VS One of two negative analog supply pins (nominally –5.2 V). Both analog supply pins should be connected together. 23 DIGITAL GROUND One of two digital ground pins. Both digital ground pins should be connected together. 24, 25 D6, D7 Digital data output. 26 D8 (MSB) Digital data output D8 (MSB) is the most significant bit of the digital output word. 27 OVERFLOW Overflow data output. Logic HIGH indicates an input overvoltage (VIN > + VREF), if OVERFLOW INHIBIT is enabled (overflow enabled, floating). See OVERFLOW INHIBIT. 28 DIGITAL –VS One of two negative digital supply pins (nominally –5.2 V). Both digital supply pins should be connected together. ANALOG OVERFLOW ENABLED (FLOATING) OVERFLOW INHIBITED (GND) INPUT OF Dl D2 D3 D4 D5 D6 D7 D8 OF Dl D2 D3 D4 D5 D6 D7 D8 VIN ≥ + V REF 1 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 VIN < + VREF 0 X X X X X X X X 0 X X X X X X X X PIN CONFIGURATIONS TOP VIEW (Not to Scale) 28 27 26 25 24 23 22 21 20 19 18 17 16 15 1 2 3 4 5 6 7 8 9 10 11 12 13 14 AD9012 DIGITAL VS+ REFMID –VREF ANALOG INPUT ANALOG GROUND DIGITAL VS+ DIGITAL VS+ OVERFLOW INH HYSTERESIS +VREF ENCODE ANALOG GROUND ANALOG INPUT D1 (LSB) D2 D3 D4 D5 DIGITAL GROUND ANALOG VS– DIGITAL VS– OVERFLOW D8 (MSB) D7 ANALOG VS– DIGITAL GROUND D6 DIGITAL VS– TOP VIEW (Not to Scale) 28 27 1 2 3 426 25 21 22 23 24 19 20 5 6 7 8 9 10 11 12 13 14 15 16 17 18 D7 D6 DIGITAL GROUND ANALOG VS– ANALOG VS– D5 ANALOG INPUT ANALOG GROUND ENCODE DIGITAL VS+ ANALOG INPUT –VREF AD9012 DIGITAL GROUND ANALOG GROUND |
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Mô tả tương tự - AD9012SE |
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