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AD9020JE датащи(PDF) 5 Page - Analog Devices |
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AD9020JE датащи(HTML) 5 Page - Analog Devices |
5 / 12 page AD9020 –5– REV. A NC = NO CONNECT 60 9 10 61 44 43 27 26 AD9020 TOP VIEW (Not to Scale) NC +V SENSE +V REF GND ENCODE GND (LSB) D 0 D 1 D 2 NC NC NC LSBs INVERT NC GND OVERFLOW D 9 (MSB) NC +V S +V S –V S D 3 D 4 +V S –V SENSE –V REF +V S –V S +V S D 8 D 7 D 6 D 5 +V S AD9020 PIN FUNCTION DESCRIPTIONS Pin No. Name Function 1 1/2REF Midpoint of internal reference ladder. 2, 16, 28, 29, 35, 41, 42, –VS Negative supply voltage; nominally –5.0 V ± 5%. 54, 64 3, 6, 15, 18, 25, 30, 33, 34, +VS Positive supply voltage; nominally +5 V ± 5%. 37, 40, 45, 52, 55, 65, 68 4, 5, 13, 17, 27, 31, 32, GROUND All ground pins should be connected together and to low impedance ground 36, 38, 39, 43, 53, 66, 67 plane. 7 3/4REF Three-quarter point of internal reference ladder. 8, 9 ANALOG IN Analog input; nominally between ±1.75 V. 11 +VSENSE Voltage sense line to most positive point on internal resistor ladder. Normally +1.75 V. 12 +VREF Voltage force connection for top of internal reference ladder. Normally driven to provide +1.75 V at +VSENSE. 14 ENCODE TTL-compatible convert command used to begin digitizing process. 19–23, 46–50 D0–D9 TTL-compatible digital output data. 51 OVERFLOW TTL-compatible output indicating ANALOG IN > +VSENSE. 56 –VREF Voltage force connection for bottom of internal reference ladder. Normally driven to provide –1.75 V at –VSENSE. 57 –VSENSE Voltage sense line to most negative point on internal resistor ladder. Normally –1.75 V. 59 LSBs INVERT Normally grounded. When connected to +VS, lower order bits (D0–D8) are inverted. 61 MSB INVERT Normally grounded. When connected to +VS, most significant bit (MSB; D9) is inverted. 63 1/4REF One-quarter point of internal reference ladder. |
Аналогичный номер детали - AD9020JE |
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Аналогичное описание - AD9020JE |
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