component
AD7795BRUZ-REEL
Public Made by Adomby adom
Analog Devices Analog To Digital Converters (ADC), TSSOP-24. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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"title": "AD7795BRUZ-REEL",
"brief": "Analog Devices Analog To Digital Converters (ADC), TSSOP-24. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
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"manufacturer": "Analog Devices",
"package": "TSSOP-24",
"pin_count": 24,
"category": "Data Acquisition",
"subcategory": "Analog To Digital Converters (ADC)",
"datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588885740582785024",
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"distributor_links": {
"lcsc": "C456288",
"digikey": "AD7795BRUZ-REELTR-ND",
"mouser": "584-AD7795BRUZ-R"
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"pins": [
{
"number": "1",
"name": "SCLK",
"type": "input",
"description": "Serial clock input for the ADC serial interface, also used to clock DIN and DOUT/RDY when CS is low."
},
{
"number": "2",
"name": "CLK",
"type": "bidirectional",
"description": "Clock pin that can be used as an external clock input or as an internal clock output, selected by the configuration."
},
{
"number": "3",
"name": "CS",
"type": "input",
"description": "Chip select input used to select the ADC on the serial bus; the text indicates it should be held low during serial communication."
},
{
"number": "4",
"name": "NC",
"type": "unconnected",
"description": "No connect; leave unconnected."
},
{
"number": "5",
"name": "AIN6(+)/P1",
"type": "input",
"description": "Positive analog input of differential pair AIN6(+)/AIN6(-); when used as a digital I/O (P1), its voltage must stay between GND and AVDD."
},
{
"number": "6",
"name": "AIN6(–)/P2",
"type": "input",
"description": "Negative analog input of differential pair AIN6(+)/AIN6(-); when used as a digital I/O (P2), its voltage must stay between GND and AVDD."
},
{
"number": "7",
"name": "AIN1(+)",
"type": "input",
"description": "Positive analog input of differential pair AIN1(+)/AIN1(-)."
},
{
"number": "8",
"name": "AIN1(-)",
"type": "input",
"description": "Negative analog input of differential pair AIN1(+)/AIN1(-)."
},
{
"number": "9",
"name": "AIN2(+)",
"type": "input",
"description": "Positive analog input of differential pair AIN2(+)/AIN2(-)."
},
{
"number": "10",
"name": "AIN2(-)",
"type": "input",
"description": "Negative analog input of differential pair AIN2(+)/AIN2(-)."
},
{
"number": "11",
"name": "AIN3(+)",
"type": "input",
"description": "Positive analog input of differential pair AIN3(+)/AIN3(-)."
},
{
"number": "12",
"name": "AIN3(-)",
"type": "input",
"description": "Negative analog input of differential pair AIN3(+)/AIN3(-)."
},
{
"number": "13",
"name": "REFIN1(+)",
"type": "input",
"description": "Positive reference input 1; the differential reference (REFIN1(+) - REFIN1(-)) is 2.5 V nominal, with an absolute range of GND + 0.1 V to AVDD."
},
{
"number": "14",
"name": "REFIN1(–)",
"type": "input",
"description": "Negative reference input 1; absolute voltage must be between GND and AVDD - 0.1 V."
},
{
"number": "15",
"name": "AIN5(+)/IOUT2",
"type": "output",
"description": "Positive analog input AIN5(+), or excitation current output IOUT2 for the burnout/excitation current source, which the text gives as 10 uA, 210 uA or 1 mA."
},
{
"number": "16",
"name": "AIN5(–)/IOUT1",
"type": "output",
"description": "Negative analog input AIN5(-), or excitation current output IOUT1 for the excitation current source, which the text gives as 10 uA, 210 uA or 1 mA."
},
{
"number": "17",
"name": "AIN4(+)/REFIN2(+)",
"type": "input",
"description": "Positive analog input AIN4(+), or positive reference input REFIN2(+) with an absolute range of GND + 0.1 V to AVDD."
},
{
"number": "18",
"name": "AIN4(–)/REFIN2(–)",
"type": "input",
"description": "Negative analog input AIN4(-), or negative reference input REFIN2(-) with an absolute voltage between GND and AVDD - 0.1 V."
},
{
"number": "19",
"name": "PSW",
"type": "output",
"description": "Power switch pin for the bridge/sensor supply switching; connect to GND when not used."
},
{
"number": "20",
"name": "GND",
"type": "power_in",
"description": "Ground reference for the analog and digital circuitry."
},
{
"number": "21",
"name": "AVDD",
"type": "power_in",
"description": "Analog supply voltage, 2.7 V to 5.25 V."
},
{
"number": "22",
"name": "DVDD",
"type": "power_in",
"description": "Digital supply voltage, 2.7 V to 5.25 V; the text also gives a 3 V figure for DVDD when AVDD is 5 V."
},
{
"number": "23",
"name": "DOUT/RDY",
"type": "tri_state",
"description": "Serial data output that also serves as the data-ready indicator; it goes high when a conversion is not ready and is tri-stated when CS is high."
},
{
"number": "24",
"name": "DIN",
"type": "input",
"description": "Serial data input to the ADC control and communications register."
}
],
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"guards": "pin_guards 0.1: passed",
"guard_notes": [
"extractor flagged: The pin-description text layer in this datasheet extract is mis-encoded (garbled characters), so mos; The pin table is printed for the 24-lead TSSOP, which matches the TSSOP-24 package hint. The orderin; Pin 4 (NC) is listed as no connect in the pin table and has no electrical function to report."
],
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"metadata": {
"specs": {
"Manufacturer": "Analog Devices",
"Package": "TSSOP-24",
"Category": "Data Acquisition",
"Pins": "24"
},
"characteristics": {
"version": 1,
"source": "datasheet",
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"rows": [
{
"name": "Output update rate (AD7795, 16-bit)",
"symbol": "fADC",
"kind": "electrical",
"unit": "Hz",
"min": 4.17,
"typ": null,
"max": 470,
"conditions": "2.5 V external reference; normal mode",
"source_page": 3,
"source": "datasheet"
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{
"name": "Resolution, no missing codes (AD7795)",
"symbol": "",
"kind": "electrical",
"unit": "bits",
"min": 16,
"typ": null,
"max": null,
"conditions": "No missing codes",
"source_page": 3,
"source": "datasheet"
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{
"name": "Integral nonlinearity",
"symbol": "INL",
"kind": "electrical",
"unit": "ppm of FSR",
"min": -15,
"typ": null,
"max": 15,
"conditions": "2.5 V external reference; normal mode",
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{
"name": "Power supply rejection (DC)",
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"typ": null,
"max": null,
"conditions": "AIN = 1 V/gain; gain ≥ 4",
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{
"name": "50 Hz / 60 Hz rejection, FS[3:0]=1010",
"symbol": "",
"kind": "electrical",
"unit": "dB",
"min": 65,
"typ": 80,
"max": null,
"conditions": "50 Hz and 60 Hz ±1 Hz; FS[3:0]=1010",
"source_page": 3,
"source": "datasheet"
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{
"name": "50 Hz rejection, FS[3:0]=1001",
"symbol": "",
"kind": "electrical",
"unit": "dB",
"min": 80,
"typ": 90,
"max": null,
"conditions": "50 Hz ±1 Hz; FS[3:0]=1001",
"source_page": 3,
"source": "datasheet"
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{
"name": "60 Hz rejection, FS[3:0]=1000",
"symbol": "",
"kind": "electrical",
"unit": "dB",
"min": 90,
"typ": 100,
"max": null,
"conditions": "60 Hz ±1 Hz; FS[3:0]=1000",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Analog input absolute voltage, unbuffered, gain 1–2 (GND-referenced)",
"symbol": "",
"kind": "electrical",
"unit": "mV",
"min": -30,
"typ": null,
"max": null,
"conditions": "Unbuffered; gain 1 or 2; printed as GND − 30 mV",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Analog input absolute voltage, unbuffered, gain 1–2 (AVDD-referenced)",
"symbol": "",
"kind": "electrical",
"unit": "mV",
"min": null,
"typ": null,
"max": 30,
"conditions": "Unbuffered; gain 1 or 2; printed as AVDD + 30 mV",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Analog input absolute voltage, buffered, gain 1–2 (GND-referenced)",
"symbol": "",
"kind": "electrical",
"unit": "mV",
"min": 100,
"typ": null,
"max": null,
"conditions": "Buffered; gain 1 or 2; printed as GND + 100 mV",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Analog input absolute voltage, buffered, gain 1–2 (AVDD-referenced)",
"symbol": "",
"kind": "electrical",
"unit": "mV",
"min": null,
"typ": null,
"max": -100,
"conditions": "Buffered; gain 1 or 2; printed as AVDD − 100 mV",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Analog input absolute voltage, buffered, gain 4–128 (GND-referenced)",
"symbol": "",
"kind": "electrical",
"unit": "mV",
"min": 300,
"typ": null,
"max": null,
"conditions": "Buffered; gain 4 to 128; printed as GND + 300 mV",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Analog input absolute voltage, buffered, gain 4–128 (AVDD-referenced)",
"symbol": "",
"kind": "electrical",
"unit": "V",
"min": null,
"typ": null,
"max": -1.1,
"conditions": "Buffered; gain 4 to 128; printed as AVDD − 1.1 V",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Common-mode input voltage VCM",
"symbol": "VCM",
"kind": "electrical",
"unit": "V",
"min": 0.5,
"typ": null,
"max": null,
"conditions": "Gain 4 to 128; VCM = (AIN(+) + AIN(−))/2",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Analog input current, gain 1–2",
"symbol": "",
"kind": "electrical",
"unit": "nA",
"min": -1,
"typ": null,
"max": 1,
"conditions": "AD7795B; gain 1 or 2; output rate < 100 Hz",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Analog input current, gain 4–128",
"symbol": "",
"kind": "electrical",
"unit": "pA",
"min": -250,
"typ": null,
"max": 250,
"conditions": "AD7795B; gain 4 to 128; output rate < 100 Hz",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Internal reference accuracy",
"symbol": "VREF",
"kind": "tolerance",
"unit": "%",
"min": -0.01,
"typ": null,
"max": 0.01,
"conditions": "1.17 V internal reference; AVDD = 4 V, TA = 25°C",
"source_page": 5,
"source": "datasheet"
},
{
"name": "Internal reference temperature coefficient",
"symbol": "",
"kind": "temperature_coefficient",
"unit": "ppm/°C",
"min": null,
"typ": 4,
"max": 15,
"conditions": "Internal 1.17 V reference",
"source_page": 5,
"source": "datasheet"
},
{
"name": "REFIN voltage range",
"symbol": "VREFIN",
"kind": "electrical",
"unit": "V",
"min": 0.1,
"typ": null,
"max": null,
"conditions": "REFIN = REFIN(+) − REFIN(−); max printed as AVDD",
"source_page": 5,
"source": "datasheet"
},
{
"name": "REFIN absolute voltage (GND-referenced)",
"symbol": "",
"kind": "electrical",
"unit": "mV",
"min": -30,
"typ": null,
"max": null,
"conditions": "Printed as GND − 30 mV",
"source_page": 5,
"source": "datasheet"
},
{
"name": "REFIN absolute voltage (AVDD-referenced)",
"symbol": "",
"kind": "electrical",
"unit": "mV",
"min": null,
"typ": null,
"max": 30,
"conditions": "Printed as AVDD + 30 mV",
"source_page": 5,
"source": "datasheet"
},
{
"name": "Reference detect threshold (NOXREF)",
"symbol": "VREF",
"kind": "electrical",
"unit": "V",
"min": 0.3,
"typ": null,
"max": 0.65,
"conditions": "Below 0.3 V indicates NOXREF",
"source_page": 5,
"source": "datasheet"
},
{
"name": "Output voltage high limit, IEXC 10 µA–210 µA",
"symbol": "",
"kind": "electrical",
"unit": "V",
"min": null,
"typ": null,
"max": -0.65,
"conditions": "Printed as AVDD − 0.65 V; excitation current 10 µA to 210 µA",
"source_page": 5,
"source": "datasheet"
},
{
"name": "Output voltage high limit, IEXC 1 mA",
"symbol": "",
"kind": "electrical",
"unit": "V",
"min": null,
"typ": null,
"max": -1.1,
"conditions": "Printed as AVDD − 1.1 V; excitation current 1 mA",
"source_page": 5,
"source": "datasheet"
},
{
"name": "Switch on-resistance RON",
"symbol": "RON",
"kind": "electrical",
"unit": "Ω",
"min": null,
"typ": null,
"max": 7,
"conditions": "AVDD = 5 V",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Switch on-resistance RON",
"symbol": "RON",
"kind": "electrical",
"unit": "Ω",
"min": null,
"typ": null,
"max": 9,
"conditions": "AVDD = 3 V",
"source_page": 6,
"source": "datasheet"
},
{
"name": "VOH, P1 and P2 outputs",
"symbol": "VOH",
"kind": "electrical",
"unit": "V",
"min": -0.6,
"typ": null,
"max": null,
"conditions": "Printed as AVDD − 0.6 V; AVDD = 3 V, ISOURCE = 100 µA",
"source_page": 6,
"source": "datasheet"
},
{
"name": "VOH, P1 and P2 outputs",
"symbol": "VOH",
"kind": "electrical",
"unit": "V",
"min": 4,
"typ": null,
"max": null,
"conditions": "AVDD = 5 V, ISOURCE = 200 µA",
"source_page": 6,
"source": "datasheet"
},
{
"name": "VOL, P1 and P2 outputs",
"symbol": "VOL",
"kind": "electrical",
"unit": "V",
"min": null,
"typ": null,
"max": 0.4,
"conditions": "AVDD = 3 V, ISINK = 100 µA",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Internal clock frequency tolerance",
"symbol": "fCLK",
"kind": "tolerance",
"unit": "%",
"min": -3,
"typ": null,
"max": 3,
"conditions": "Nominal 64 kHz internal clock",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Digital input low voltage, DVDD = 5 V",
"symbol": "VINL",
"kind": "electrical",
"unit": "V",
"min": null,
"typ": null,
"max": 0.8,
"conditions": "DVDD = 5 V",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Digital input high voltage",
"symbol": "VINH",
"kind": "electrical",
"unit": "V",
"min": 2,
"typ": null,
"max": null,
"conditions": "DVDD = 3 V to 5 V",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Schmitt trigger VT(+), DVDD = 5 V",
"symbol": "VT(+)",
"kind": "electrical",
"unit": "V",
"min": 1.4,
"typ": null,
"max": 2,
"conditions": "AD7795B SCLK/CLK/DIN; DVDD = 5 V",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Schmitt trigger VT(−), DVDD = 5 V",
"symbol": "VT(−)",
"kind": "electrical",
"unit": "V",
"min": 0.8,
"typ": null,
"max": 1.7,
"conditions": "AD7795B SCLK/CLK/DIN; DVDD = 5 V",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Schmitt trigger hysteresis VT(+) − VT(−), DVDD = 5 V",
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"min": -40,
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"name": "Thermal resistance junction-to-ambient, TSSOP",
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"min": null,
"typ": 97.9,
"max": null,
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"source_page": 10,
"source": "datasheet"
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