component
ADS1261BQWRHMRQ1
Public Made by Adomby adom
Texas Instruments Analog To Digital Converters (ADCs), VQFN-32-EP(5x5). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownADS1261BQWRHMRQ1
Texas Instruments · Analog To Digital Converters (ADCs) · VQFN-32-EP(5x5)
ADS1261BQWRHMRQ1 from Texas Instruments, in a VQFN-32-EP(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 | AINCOM | bidirectional | Analog input common, also usable as an IDAC1/IDAC2 connection and VBIAS per the datasheet pin table. |
| 2 | CAPP | output | PGA output P; connect a 4.7-nF C0G dielectric capacitor across CAPP and CAPN. |
| 3 | CAPN | output | PGA output N; connect a 4.7-nF C0G dielectric capacitor across CAPP and CAPN. |
| 4 | AVDD | power_in | Positive analog power supply (AVDD to AVSS absolute maximum is 7 V). |
| 5 | AVSS | power_in | Negative analog power supply; also the connection for the exposed thermal pad. |
| 6 | REFOUT | output | Internal 2.5-V reference output; connect a 10-µF capacitor to AVSS. |
| 7 | PWDN | input | Power-down control input, active low. |
| 8 | RESET | input | Reset input, active low. |
| 9 | START | input | Start conversion control input, active high. |
| 10 | CS | input | Serial interface chip select, active low; CS must stay low for the entire data transaction. |
| 11 | SCLK | input | Serial interface shift clock; Schmitt-triggered input that should be kept noise-free and terminated near the driver. |
| 12 | DIN | input | Serial interface data input, latched on the falling edge of SCLK. |
| 13 | DRDY | output | Data ready indicator output, asserts active low when conversion data are ready. |
| 14 | DOUT/DRDY | tri_state | Dual-function serial data output and active-low data ready; high-impedance when CS is high. |
| 15 | BYPASS | output | Internal subregulator bypass; connect a 1-µF capacitor to DGND. |
| 16 | DGND | power_in | Digital ground. |
| 17 | DVDD | power_in | Digital power supply (DVDD to DGND absolute maximum is 7 V). |
| 18 | CLKIN | input | Clock input: connect to DGND to use the internal oscillator, or connect an external clock source. |
| 19 | NC | unconnected | No connection; electrically float or connect to DGND. |
| 20 | NC | unconnected | No connection; electrically float or connect to DGND. |
| 21 | NC | unconnected | No connection; electrically float or connect to DGND. |
| 22 | NC | unconnected | No connection; electrically float or connect to DGND. |
| 23 | AIN9 | passive | Analog input 9 (ADS1261-Q1), also usable as IDAC1 and IDAC2 output. |
| 24 | AIN8 | passive | Analog input 8 (ADS1261-Q1), also usable as IDAC1 and IDAC2 output. |
| 25 | AIN7 | passive | Analog input 7 (ADS1261-Q1), also usable as IDAC1 and IDAC2 output. |
| 26 | AIN6 | passive | Analog input 6 (ADS1261-Q1), also usable as IDAC1 and IDAC2 output. |
| 27 | AIN5 | passive | Analog input 5 (ADS1261-Q1), also IDAC1/IDAC2 output and alternate GPIO3 and ACX2 function. |
| 28 | AIN4 | passive | Analog input 4 (ADS1261-Q1), also IDAC1/IDAC2 output and alternate GPIO2 and ACX1 function. |
| 29 | AIN3 | passive | Analog input 3 (ADS1261-Q1), also IDAC1/IDAC2 output and alternate REFN1, GPIO1 and ACX2 function. |
| 30 | AIN2 | passive | Analog input 2 (ADS1261-Q1), also IDAC1/IDAC2 output and alternate REFP1, GPIO0 and ACX1 function. |
| 31 | AIN1 | passive | Analog input 1, also IDAC1/IDAC2 output and alternate REFN0 function. |
| 32 | AIN0 | passive | Analog input 0, also IDAC1/IDAC2 output and alternate REFP0 function. |
| 33 | Thermal Pad | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | VQFN-32-EP(5x5) |
| Category | ADC/DAC/Data Conversion |
| Pins | 33 |
CAD (KiCad official)
- Symbol:
ADS1261BQWRHMRQ1 - Footprint:
Package_DFN_QFN:QFN-32-1EP_5x5mm_P0.5mm_EP3.3x3.3mm - 3D model: VQFN-32-EP(5x5) (KiCad packages3D, STEP)
- 3D model files:
ads1261bqwrhmrq1-etched.step/ads1261bqwrhmrq1-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ads1261bqwrhmrq1.step/ads1261bqwrhmrq1.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (87 pp, sha256
335d3b39e7424be6, 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, primaryclaude-haiku-5-5(text), consensusclaude-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).