component
LHA7724SEQG
Public Made by Adomby adom
Legendsemi Analog To Digital Converters (ADC), QFN-24-EP(4x5). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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"brief": "Legendsemi Analog To Digital Converters (ADC), QFN-24-EP(4x5). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
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"subcategory": "Analog To Digital Converters (ADC)",
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"name": "DRDY",
"type": "output",
"description": "Active-low data-ready output, driven low when new conversion data is ready to be retrieved."
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{
"number": "2",
"name": "DOUT",
"type": "tri_state",
"description": "Serial interface data output, shifted out on SCLK falling edge and high-impedance when CS is high."
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{
"number": "3",
"name": "DIN",
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"description": "Serial interface data input, shifted in on SCLK rising edge."
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{
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"name": "CS",
"type": "input",
"description": "Active-low serial interface chip select."
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{
"number": "5",
"name": "SYNC",
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"description": "Synchronization input, active on the rising edge."
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{
"number": "6",
"name": "MFLAG",
"type": "output",
"description": "Modulator input-range overflow flag output, set high under over-range conditions."
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{
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{
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{
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{
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{
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"description": "Positive analog supply, AVSS + 4.5 V to AVSS + 5.5 V."
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"description": "Negative analog supply, 0 V to -2.6 V relative to DGND."
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{
"number": "16",
"name": "VREFN",
"type": "input",
"description": "Negative reference input, AVSS - 0.1 V to VREFP - 1 V."
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{
"number": "17",
"name": "VREFP",
"type": "input",
"description": "Positive reference input, VREFN + 1 V to AVDD + 0.1 V."
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{
"number": "18",
"name": "PWDN",
"type": "input",
"description": "Active-low power-down input."
},
{
"number": "19",
"name": "RESET",
"type": "input",
"description": "Active-low reset input; hold low at least 2/fCLK to force a reset."
},
{
"number": "20",
"name": "DVDD",
"type": "power_in",
"description": "Digital supply, 1.65 V to 3.6 V."
},
{
"number": "21",
"name": "DGND",
"type": "power_in",
"description": "Digital ground, connect to the digital ground plane."
},
{
"number": "22",
"name": "REGCAPD",
"type": "power_out",
"description": "1.8 V regulator output; connect a 1 uF capacitor to DGND."
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{
"number": "23",
"name": "CLK",
"type": "input",
"description": "Master clock input, 8.192 MHz specified (1 to 8.192 MHz)."
},
{
"number": "24",
"name": "SCLK",
"type": "input",
"description": "Serial interface clock input; hold low when inactive."
},
{
"number": "25",
"name": "EP",
"type": "passive",
"description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
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"primary_model": "claude-sonnet-5-5",
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"guards": "pin_guards 0.1: passed",
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],
"pages_sent": 26,
"cost_usd": 0.221,
"at": "2026-10-23T12:10:21"
},
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"described": 25,
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{
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{
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{
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{
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{
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{
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{
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{
"name": "DIN valid to SCLK high setup time",
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{
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{
"name": "CLK high to CS high",
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"min": 24,
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{
"name": "CS low to DOUT drive propagation delay",
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{
"name": "SCLK low to valid new DOUT propagation delay",
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"conditions": "DOUT load = 20 pF 100 kΩ",
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{
"name": "SCLK low to DOUT invalid hold time",
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"min": 0,
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{
"name": "CS high to DOUT tri-state",
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"min": null,
"typ": null,
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"conditions": "",
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{
"name": "Junction-to-ambient thermal resistance",
"symbol": "RθJA",
"kind": "thermal",
"unit": "°C/W",
"min": null,
"typ": 30.2,
"max": null,
"conditions": "24-pin QFN",
"source_page": 7,
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{
"name": "Junction-to-case (top) thermal resistance",
"symbol": "RθJC(top)",
"kind": "thermal",
"unit": "°C/W",
"min": null,
"typ": 27.5,
"max": null,
"conditions": "24-pin QFN",
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{
"name": "Junction-to-board thermal resistance",
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"kind": "thermal",
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"min": null,
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{
"name": "Junction-to-case (bottom) thermal resistance",
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"min": null,
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{
"name": "Multiplexer switch on-resistance",
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"min": null,
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{
"name": "ADC input impedance, low-power mode",
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{
"name": "ADC input impedance, high-resolution mode",
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"typ": 48,
"max": null,
"conditions": "High-resolution mode",
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{
"name": "SNR, low-power mode",
"symbol": "SNR",
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"min": null,
"typ": 100.1,
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"conditions": "Low-power mode @64kHz",
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{
"name": "SNR, high-resolution mode",
"symbol": "SNR",
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"unit": "dB",
"min": null,
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"max": null,
"conditions": "High-resolution mode @128kHz",
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},
{
"name": "THD, low-power mode",
"symbol": "THD",
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"unit": "dB",
"min": null,
"typ": -111,
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{
"name": "THD, high-resolution mode",
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