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ADS127L01IPBSR

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Texas Instruments Analog To Digital Converters (ADC), TQFP-32(5x5). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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Contents

README

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ADS127L01IPBSR

Texas Instruments · Analog To Digital Converters (ADC) · TQFP-32(5x5)

ADS127L01IPBSR from Texas Instruments, in a TQFP-32(5x5). 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 LVDD power_in Analog supply pin that is an output of the internal analog LDO with a 1-µF capacitor to AGND when INTLDO=0, and an input to be connected to a 1.8-V supply when INTLDO=1.
2 CAP1 output Modulator common-mode voltage node that requires a 1-µF capacitor connected to AGND.
3 AINN input Negative analog input.
4 AINP input Positive analog input.
5 AGND power_in Analog ground.
6 AVDD power_in Analog supply that requires a 1-µF capacitor connected to AGND.
7 REXT input Analog power-scaling bias resistor pin: 60.4 kΩ to AGND for high-resolution (HR) and low-power (LP) modes, or 120 kΩ to AGND for very-low-power (VLP) mode.
8 INTLDO input LVDD voltage-select digital input, pulled high to AVDD (1 = external LVDD supply) or low to AGND through 10 kΩ (0 = internal LDO).
9 REFP input Positive analog reference input that requires a minimum 10-µF capacitor to REFN.
10 REFN input Negative analog reference input.
11 CAP2 output Reference common-mode voltage node that requires a 1-µF capacitor connected to AGND.
12 FILTER1 input Digital filter select pin (MSB, with FILTER0): 00 = Wideband 1, 01 = Wideband 2, 10 = Low-latency, 11 = reserved; hardware pin to be pulled high to DVDD or low to DGND through 100 kΩ.
13 FILTER0 input Digital filter select pin (LSB, with FILTER1) using the same coding as FILTER1; hardware pin to be pulled high to DVDD or low to DGND through 100 kΩ.
14 FSMODE input Frame-sync mode select: 0 = slave mode, 1 = master mode, applicable to frame-sync interface only with no effect in SPI mode.
15 OSR1 input Oversampling-ratio select pin (MSB, with OSR0) for the decimation filters; for wideband filters 00/01/10/11 select OSR 32/64/128/256, and for the low-latency filter they select OSR 32/128/512/2048.
16 OSR0 input Oversampling-ratio select pin (LSB, with OSR1) using the coding described for OSR1 and dependent on the FILTER[1:0] setting.
17 START input Synchronization input used to start or restart a conversion.
18 DAISYIN input Daisy-chain input that must be tied directly to DGND when devices are not daisy-chained.
19 DRDY/FSYNC bidirectional In SPI mode this is the active-low data-ready output; in frame-sync mode it is the frame-sync input signal; leave floating or tie to DVDD through high-impedance resistor when unused in SPI mode.
20 DOUT output Serial data output.
21 DIN input Serial data input that must be tied directly to DGND when using the frame-sync interface.
22 SCLK bidirectional Serial clock pin, specified as a digital input/output, serving as the serial clock input.
23 CS input Chip select that must be tied directly to DGND when using the frame-sync interface.
24 CLK input Master clock input.
25 CAP3 output Internally generated digital operating voltage that requires a 1-µF capacitor connected to DGND.
26 DGND power_in Digital ground.
27 DVDD power_in Digital supply that requires a 1-µF capacitor connected to DGND.
28 RESET/PWDN input Active-low reset or power-down pin; see the Reset and Power-Down Pin section for hardware design details when using power-down mode.
29 HR input ADC operating mode select: 1 = high-resolution (HR), 0 = low-power (LP) or very-low-power (VLP), with LP/VLP selected by the REXT resistor value.
30 FORMAT input Interface select: 0 = SPI interface, 1 = frame-sync interface; hardware pin to be pulled high to DVDD or low to DGND through 100 kΩ.
31 AGND power_in Analog ground.
32 AVDD power_in Analog supply that must be decoupled to AGND with a 1-µF capacitor.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package TQFP-32(5x5)
Category Data Acquisition
Pins 32

CAD (KiCad official)

  • Symbol: ADS127L01IPBSR
  • Footprint: Package_QFP:TQFP-32_5x5mm_P0.5mm
  • 3D model: TQFP-32(5x5), generated from the KiCad footprint (body from the F.Fab outline, terminals on the pads, 1.1 mm nominal TQFP height). Neither the vendor nor KiCad ships a 3D model for this package, so the dimensions are nominal, not the manufacturer's CAD (STEP)
  • 3D model files: ads127l01ipbsr-etched.step / ads127l01ipbsr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ads127l01ipbsr.step / ads127l01ipbsr.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (90 pp, sha256 7af2117fe188e693, retrieved 2026-10-08, tier: lcsc)
  • 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