component

ADS8638SRGET

Public Made by Adom

by adom

Texas Instruments Analog To Digital Converters (ADCs), VQFN-24-EP(4x4). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componentadc-dac-data conversionads8638srgetfactory-2.0.0extractor-text

Verified ADS8638SRGET

by Ray · last 31 Oct 2026 · 1 record · files match
SymbolFootprint3D modelPins

Verification log 1 record

31 Oct 2026RayPublished by the parts factory: tier mfr, 25 pinsfiles match
SymbolFootprint3D modelPinsfor all variants
  • ✓component-page-verify: PASS
  • ✓cad_props: Datasheet, MPN and distributor properties match page.json
  • ✓component: ADS8638SRGET · VQFN-24-EP(4x4) · 25 pins
  • ✓copper: 25 copper pads, none touching another net
  • ✓datasheet: all 25 pin names found in the 75-page datasheet
  • ✓distributor: lcsc C2651354, digikey 296-29329-2-ND, mouser 595-ADS8638SRGET
  • ✓family: QFN-24-1EP_4x4mm_P0.5mm_EP2.6x2.6mm
  • ✓files: 7 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-ouaec5i1/x.lbr is a valid EAGLE .lbr with complete deviceset
  • ✓license: CC-BY-SA-4.0
  • ✓models_3d: 2 records
  • •package_fit (skip): no component.package_dims on the page: the model is unchecked against the datasheet drawing
  • ✓pads: 25 pins = 25 pads
  • ✓pose: 2 STEP(s) Z-up, seated, centred
  • ✓symbol: 25 pins agree
  • ✓visibility: public, source open
Evidencedatasheet
Verified files✓ ads8638srget.kicad_sym✓ ads8638srget.kicad_mod✓ ads8638srget.step
Spot something wrong? Report it as an issue Propose a fix Records are signed by members of adom.
Overview Files Discover Packages Releases Dependencies Issues Breadcrumbs Pull Requests Activity
main
Download ZIP Propose a change
Generated by kicad-footprint-generator · KiCad file format 20260206
Name Last commit message Last updated
docs Publish 0.1.0 · Ray 3d ago
viewers ads8638srget: viewers · Ray 3d ago
ads8638srget-etched.glb Publish 0.1.0 · Ray 3d ago
ads8638srget-etched.step ads8638srget: factory component page (tier=mfr) · Ray 3d ago
ads8638srget-hero.glb ads8638srget: hero GLB from the etched model (keeps the MPN mark) · Ray 3d ago
ads8638srget-hero.overlay.json Publish 0.1.0 · Ray 3d ago
ads8638srget.glb Publish 0.1.0 · Ray 3d ago
ads8638srget.kicad_mod Publish 0.1.0 · Ray 3d ago
ads8638srget.kicad_sym Publish 0.1.0 · Ray 3d ago
ads8638srget.lbr Publish 0.1.0 · Ray 3d ago
ads8638srget.step Publish 0.1.0 · Ray 3d ago
package.json Publish 0.1.0 · Ray 3d ago
page.json Set visibility: public · Ray 3d ago
README.md Publish 0.1.0 · Ray 3d ago
verification.json Verified: Published by the parts factory: tier mfr, 25 pins · Ray 3d ago

ADS8638SRGET

Texas Instruments · Analog To Digital Converters (ADCs) · VQFN-24-EP(4x4)

ADS8638SRGET from Texas Instruments, in a VQFN-24-EP(4x4). Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 AVDD power_in Analog power supply for the device.
2 AGND power_in Analog ground.
3 AGND power_in Analog ground.
4 NC unconnected This pin is not internally connected and should not be left floating; it is recommended to connect it to AGND.
5 AINGND power_in Common for all analog input channels; acts as the ground sense terminal.
6 AIN7 input Analog input channel 7.
7 AIN6 input Analog input channel 6.
8 AIN5 input Analog input channel 5.
9 AIN4 input Analog input channel 4.
10 AIN3 input Analog input channel 3.
11 AIN2 input Analog input channel 2.
12 AIN1 input Analog input channel 1.
13 AIN0 input Analog input channel 0.
14 HVDD power_in High-voltage positive supply for the multiplexer channels.
15 HVSS power_in High-voltage negative supply for the multiplexer channels.
16 CS input SPI chip select digital input.
17 SCLK input SPI serial clock digital input.
18 DIN input SPI serial data digital input.
19 DOUT output SPI serial data digital output.
20 DGND power_in Digital ground.
21 DVDD power_in Digital I/O supply; may operate from 5 V down to 1.8 V.
22 AL_PD bidirectional User-configurable pin: active-high alarm output when programmed as AL, or active-low asynchronous power-down input when programmed as PD (default is PD input).
23 REFGND power_in Reference ground input when an external reference is selected; acts as reference decoupling ground when the internal reference is selected.
24 REF input Reference input when an external reference is selected; acts as reference decoupling terminal when the internal reference is selected.
25 EP passive Exposed pad (from the footprint; not named in the datasheet pin table).

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package VQFN-24-EP(4x4)
Category ADC/DAC/Data Conversion
Pins 25

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
AVDD to AGND, DVDD to DGND -0.3 7 V 2
HVDD to AGND -0.3 18 V 2
HVSS to AGND -18 0.3 V 2
HVDD to HVSS -0.3 33 V 2
Operating temperature range -40 125 °C 2
Storage temperature range -65 150 °C 2
ESD HBM, all pins -2000 2000 V Human body model 2
ESD CDM, all pins -500 500 V Charged device model 2
AVDD supply voltage VAVDD 2.7 3.3 5.25 V 5
DVDD supply voltage VDVDD 1.65 3.3 5.25 V 5
HVDD supply voltage VHVDD 5 10 15 V 10V < VHVDD, VHVSS < 30V 5
HVSS supply voltage VHVSS -15 -10 0 V 10V < VHVDD, VHVSS < 30V 5
Specified temperature range -40 125 °C Specified performance 5
AINGND absolute input range -0.2 0.2 V 3
Input capacitance 8 pF 3
Input leakage current 200 nA At +125°C 3
Resolution 12 Bits 3
No missing codes 12 Bits 3
Integral linearity INL -1.5 0.9 1.5 LSB typ printed +0.9/-0.9 3
Differential linearity DNL -1 0.9 1.6 LSB typ printed +0.9/-0.5 3
Offset error -3 0.8 3 LSB typ printed ±0.8 3
Offset error drift 0.75 ppmFS/°C 3
Gain error -8 2 8 LSB typ printed ±2; does not include reference drift 3
Gain error drift 1.2 ppm/°C 3
Noise 0.33 LSB At FFCh output code 3
Power-supply rejection -87 dB 250mVPP and 480Hz ripple on AVDD 3
Isolation crosstalk -110 dB Channel 0 permanently selected, 2kHz full-scale sine wave on channel 1, all other channels grounded 3
Memory crosstalk -81 dB Channel 0, 2kHz full-scale sine wave on channel 1, device scans channel 0 and channel 1 alternately 3
Conversion time 750 ns At 20MHz SCLK, DVDD = 2.7V to 5.25V 3
Acquisition time 250 ns AVDD = 2.7V to 5.25V 3
Maximum throughput rate 1 MSPS At 20MHz SCLK, DVDD = 2.7V to 5.25V 3
Aperture delay 13 ns 3
Step response 250 ns 3
Total harmonic distortion THD -81 dB At 1kHz 4
Total harmonic distortion THD -80 dB At 100kHz 4
Signal-to-noise ratio SNR 71 71.8 dB At 1kHz 4
Signal-to-noise and distortion ratio SINAD 70.1 71.3 dB At 1kHz 4
Spurious-free dynamic range SFDR -83 dB At 1kHz 4
Full-power bandwidth 1 MHz At -3dB 4
Logic input high VIH 0.7 DVDD 4
Logic input low VIL 0.3 DVDD 4
Logic output high VOH 0.8 DVDD With 20pF load on SDO 4
Logic output low VOL 0.2 DVDD With 20pF load on SDO 4
External reference input voltage range VREF 2 3 V Max is 3.0 or AVDD, whichever is less 4
Internal reference output voltage 2.5 V 4
Internal reference initial accuracy -1.2 1.2 % 4
Internal reference temperature drift 20 ppm/°C 4
Reference drive current, source 750 µA Short-circuit protected 4
Reference drive current, sink 20 µA 4
Reference turn-on settling time 9 ms With 10µF decoupling capacitor from REF to REFGND 4
Temperature sensor absolute accuracy 5 % of FSR 4
AVDD dynamic current IAVDD(dynamic) 3.1 3.6 mA VAVDD = 4.75V to 5.25V, 1MHz throughput, normal mode, internal reference and temperature sensor off 5
AVDD static current IAVDD(static) 1.5 1.9 mA VAVDD = 4.75V to 5.25V, SCLK off, normal mode, internal reference and temperature sensor off 5
Additional AVDD current, internal reference on IAVDD(ref) 180 µA VAVDD = 2.7V to 5.25V, temperature sensor off 5
Additional AVDD current, temperature sensor on IAVDD(temp) 400 µA VAVDD = 2.7V to 5.25V, internal reference off 5
HVDD dynamic current IHVDD(dynamic) 270 350 µA HVDD = 15V and 1MSPS throughput 5
HVSS dynamic current IHVSS(dynamic) 520 µA HVSS = -15 V and 1MSPS throughput 5
DVDD supply current IDVDD 2.5 mA DVDD = 3.3V, fSAMPLE = 1MSPS, DOUT load = 20pF 5
Junction-to-ambient thermal resistance θJA 32.6 °C/W RGE, 24 pins 5
Junction-to-case (top) thermal resistance θJCtop 30.5 °C/W RGE, 24 pins 5
Junction-to-board thermal resistance θJB 3.3 °C/W RGE, 24 pins 5
Junction-to-case (bottom) thermal resistance θJCbot 2.6 °C/W RGE, 24 pins 5
Delay time, CS high to DOUT high-z td(CS-DOHZ) 6.4 22 ns DVDD = 3V 6
Delay time, CS low to first data out td(CS-DO) 40 ns DVDD = 3V 6
Delay time, SCLK falling to DOUT td(SCLK-DOUT) 33 ns DVDD = 3V 6

CAD (KiCad official)

  • Symbol: ADS8638SRGET
  • Footprint: Package_DFN_QFN:QFN-24-1EP_4x4mm_P0.5mm_EP2.6x2.6mm
  • 3D model: VQFN-24-EP(4x4) (KiCad packages3D, STEP)
  • 3D model files: ads8638srget-etched.step / ads8638srget-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ads8638srget.step / ads8638srget.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Texas Instruments datasheet (75 pp, sha256 08d5acce7caa1cda, retrieved 2026-10-31, tier: manufacturer)
  • Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-sonnet-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF