ADS112U04IRTER

@@ -0,0 +1,66 @@+# ADS112U04IRTER++**Texas Instruments** · Analog To Digital Converters (ADC) · WQFN-16-EP(3x3)++ADS112U04IRTER 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 | RESET | input | Active-low reset input. Referenced to DVDD/DGND; valid input range DGND to DVDD. |+| 2 | DGND | power_in | Digital ground return for DVDD and all digital I/O. |+| 3 | AVSS | power_in | Negative analog power supply. Unipolar: tie to DGND. Bipolar: -2.75 V to -2.3 V vs DGND. Connect thermal pad here. |+| 4 | AIN3 | input | Analog input channel 3 to the input mux/PGA. Absolute range AVSS-0.1 V to AVDD+0.1 V (PGA disabled). |+| 5 | AIN2 | input | Analog input channel 2 to the input mux/PGA. Absolute range AVSS-0.1 V to AVDD+0.1 V (PGA disabled). |+| 6 | REFN | input | Negative external voltage reference input. Absolute range AVSS-0.1 V to V(REFP)-0.75 V. |+| 7 | REFP | input | Positive external voltage reference input. Absolute range V(REFN)+0.75 V to AVDD+0.1 V; differential VREF 0.75 V to AVDD-AVSS. |+| 8 | AIN1 | input | Analog input channel 1 to the input mux/PGA. Absolute range AVSS-0.1 V to AVDD+0.1 V (PGA disabled). |+| 9 | AIN0 | input | Analog input channel 0 to the input mux/PGA. Absolute range AVSS-0.1 V to AVDD+0.1 V (PGA disabled). |+| 10 | AVDD | power_in | Positive analog power supply, 2.3 V to 5.5 V referenced to AVSS. Decouple with a 100-nF (or larger) capacitor to AVSS. |+| 11 | DVDD | power_in | Positive digital power supply, 2.3 V to 5.5 V referenced to DGND. Decouple with a 100-nF (or larger) capacitor to DGND. |+| 12 | GPIO2/DRDY | bidirectional | General-purpose digital I/O 2, or active-low data-ready output (DRDY) when configured. Signal levels DGND to DVDD. |+| 13 | TX | output | UART serial data output (8-N-1, up to 120 kBaud). Driven between DGND and DVDD. |+| 14 | RX | input | UART serial data input (8-N-1, up to 120 kBaud, with auto-baud detection). Valid input range DGND to DVDD. |+| 15 | GPIO1 | bidirectional | General-purpose digital input/output 1. Signal levels DGND to DVDD. |+| 16 | GPIO0 | bidirectional | General-purpose digital input/output 0. Signal levels DGND to DVDD. |+| PAD | PAD | power_in | Exposed thermal pad on the bottom of the WQFN package. Must be connected to AVSS for proper thermal and electrical operation. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | WQFN-16-EP(3x3) |+| Category | Data Acquisition |+| Pins | 17 |++## Ordering variants++Same part, different packaging or reel option.++- `ADS112U04IRTER`+- `ADS112U04IRTET`+- `ADS112U04IRTER.B`+- `ADS112U04IRTET.B`+- `ADS112U04IRTERIPW`+- `ADS112U04IRTERIPWR`+- `ADS112U04IRTERIPW.B`+- `ADS112U04IRTERIPWR.B`++## CAD (KiCad official)++- Symbol: `ADS112U04IRTER`+- Footprint: `Package_DFN_QFN:QFN-16-1EP_3x3mm_P0.5mm_EP1.7x1.7mm`+- 3D model: WQFN-16-EP(3x3) (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/cn/lit/gpn/ads112u04) (None pp, sha256 `6f8d0ff90a8f4ca9`, retrieved 2026-08-17, 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:** `ds2sf` (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.+- **CAD:** KiCad official libraries (CC-BY-SA 4.0).++[Datasheet PDF](docs/ads112u04irter-datasheet.pdf)

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