component
ADS7946SRTER
Public Made by Adomby adom
Texas Instruments Analog To Digital Converters (ADC), WQFN-16-EP(3x3). 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
markdownADS7946SRTER
Texas Instruments · Analog To Digital Converters (ADC) · WQFN-16-EP(3x3)
ADS7946SRTER from Texas Instruments, in a WQFN-16-EP(3x3). Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | GND | power_in | Analog and digital power supply ground; all analog and digital signals are referred with respect to this pin. |
| 2 | AVDD | power_in | Analog ADC power supply voltage, rated 2.7 V to 5.25 V. |
| 3 | REF | input | ADC positive reference input; decouple this pin with REFGND, external reference range 2.5 V to AVDD. |
| 4 | REFGND | power_in | Reference return ground; short to analog ground plane. |
| 5 | AIN0 | input | Positive analog input, channel 0, absolute input range -0.2 V to AVDD + 0.2 V. |
| 6 | AIN0GND | input | Ground sense analog input, channel 0, absolute input range -0.2 V to +0.2 V. |
| 7 | AIN1GND | input | Ground sense analog input, channel 1, absolute input range -0.2 V to +0.2 V. |
| 8 | AIN1 | input | Positive analog input, channel 1, absolute input range -0.2 V to AVDD + 0.2 V. |
| 9 | NC | unconnected | Not connected internally; it is recommended to externally short this pin to GND. |
| 10 | NC | unconnected | Not connected internally; it is recommended to externally short this pin to GND. |
| 11 | CH SEL | input | Channel select digital input; low = Channel 0, high = Channel 1; recommended to change within one clock window after CS falling edge. |
| 12 | PDEN | input | Power-down enable digital input, active high at CS rising edge. |
| 13 | CS | input | Chip select digital input signal, active low. |
| 14 | SCLK | input | Serial SPI clock digital input, maximum frequency 40 MHz. |
| 15 | SDO | tri_state | Serial data out tri-state digital output, 20 pF load, VOH = 0.8×DVDD, VOL = 0.2×DVDD. |
| 16 | DVDD | power_in | Digital I/O power supply voltage, rated 1.65 V to AVDD. |
| 17 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | WQFN-16-EP(3x3) |
| Category | Data Acquisition |
| Pins | 17 |
CAD (KiCad official)
- Symbol:
ADS7946SRTER - Footprint:
Package_DFN_QFN:QFN-16-1EP_3x3mm_P0.5mm_EP1.7x1.7mm - 3D model: WQFN-16-EP(3x3) (KiCad packages3D, STEP)
- 3D model files:
ads7946srter-etched.step/ads7946srter-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ads7946srter.step/ads7946srter.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (51 pp, sha256
93ea910861603d86, retrieved 2026-09-23, 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 0.2, primaryclaude-haiku-4-5-20251001(text), consensusclaude-sonnet-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).