component
AD7985BCPZ
Public Made by Adomby adom
ADI(亚德诺) , LFCSP-20(4x4). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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"number": "1",
"name": "REF",
"type": "bidirectional",
"description": "Reference output/input voltage: with PDREF low it produces 4.096 V from the internal reference, and with PDREF high it accepts an external reference up to 5.0 V, decoupled closely to REFGND with a 10 µF capacitor."
},
{
"number": "2",
"name": "REF",
"type": "bidirectional",
"description": "Reference output/input voltage: with PDREF low it produces 4.096 V from the internal reference, and with PDREF high it accepts an external reference up to 5.0 V, decoupled closely to REFGND with a 10 µF capacitor."
},
{
"number": "3",
"name": "REFGND",
"type": "power_in",
"description": "Reference input analog ground, to which REF is referred and which must be decoupled closely to REF."
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{
"number": "4",
"name": "REFGND",
"type": "power_in",
"description": "Reference input analog ground, to which REF is referred and which must be decoupled closely to REF."
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{
"number": "5",
"name": "IN−",
"type": "input",
"description": "Analog input ground sense, to be connected to the analog ground plane or a remote ground sense."
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{
"number": "6",
"name": "IN+",
"type": "input",
"description": "Analog input referred to IN-, with the input voltage range (IN+ minus IN-) of 0 V to VREF."
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{
"number": "7",
"name": "PDREF",
"type": "input",
"description": "Internal reference power-down input: low enables the internal reference, and high powers it down so an external reference must be used."
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{
"number": "8",
"name": "VIO",
"type": "power_in",
"description": "Input/output interface digital power, nominally at the host interface supply of 1.8 V, 2.5 V, or 2.7 V."
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{
"number": "9",
"name": "SDO",
"type": "output",
"description": "Serial data output on which the conversion result is output, synchronized to SCK."
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{
"number": "10",
"name": "DGND",
"type": "power_in",
"description": "Digital power ground."
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{
"number": "11",
"name": "DVDD",
"type": "power_in",
"description": "Digital power, nominally at 2.5 V."
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{
"number": "12",
"name": "SCK",
"type": "input",
"description": "Serial data clock input that shifts out the conversion result when the device is selected."
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{
"number": "13",
"name": "CNV",
"type": "input",
"description": "Convert input: its leading edge initiates conversions and selects chain mode or CS mode, and in chain mode data must be read while CNV is high."
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{
"number": "14",
"name": "SDI",
"type": "input",
"description": "Serial data input that selects the interface mode at the CNV rising edge: low selects chain mode (data input for daisy-chaining, output on SDO after 16 SCK cycles), high selects CS mode."
},
{
"number": "15",
"name": "TURBO",
"type": "input",
"description": "Conversion mode selection: high gives maximum throughput of 2.5 MSPS without power-down between conversions, low gives 2.0 MSPS with power-down between conversions."
},
{
"number": "16",
"name": "AVDD",
"type": "power_in",
"description": "Input analog power, nominally at 2.5 V."
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{
"number": "17",
"name": "AGND",
"type": "power_in",
"description": "Analog power ground."
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{
"number": "18",
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"type": "power_in",
"description": "Analog power ground."
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{
"number": "19",
"name": "BVDD",
"type": "power_in",
"description": "Reference buffer power, nominally at 5.0 V; if an external reference buffer is used, REFIN is tied to ground to power down the internal buffer and the external buffer connects to BVDD."
},
{
"number": "20",
"name": "REFIN",
"type": "bidirectional",
"description": "Internal reference output or reference buffer input, producing 1.2 V typical on this pin when PDREF is low and needing 0.1 µF typical external decoupling."
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{
"number": "21",
"name": "Exposed Pad",
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"kind": "electrical",
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"conditions": "fIN = 20 kHz, VREF = 4.096 V, internal reference",
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"name": "Spurious-Free Dynamic Range",
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"min": 103,
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"name": "Absolute Input Voltage IN+",
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{
"name": "Leakage Current at 25°C",
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{
"name": "Voltage Range (IN+) - (IN-)",
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{
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{
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{
"name": "Quiet Time During Acquisition from Last SCK Falling Edge to CNV Rising Edge",
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"name": "SCK Period",
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"name": "SCK Low Time",
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"name": "SCK High Time",
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"name": "SCK Falling Edge to Data Remains Valid",
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{
"name": "CNV or SDI Low to SDO D15 MSB Valid",
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