component
DDC112U
Public Made by Adomby adom
Texas Instruments Analog To Digital Converters (ADC), SOIC-28-300mil. 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
markdownDDC112U
Texas Instruments · Analog To Digital Converters (ADC) · SOIC-28-300mil
DDC112U from Texas Instruments, in a SOIC-28-300mil. 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 | IN1 | input | Input 1: analog input for Integrators 1A and 1B, integrator selection controlled by CONV input. |
| 2 | AGND | power_in | Analog Ground |
| 3 | CAP1B | passive | External Capacitor connection for Integrator 1B |
| 4 | CAP1B | passive | External Capacitor connection for Integrator 1B |
| 5 | CAP1A | passive | External Capacitor connection for Integrator 1A |
| 6 | CAP1A | passive | External Capacitor connection for Integrator 1A |
| 7 | AVDD | power_in | Analog Supply, +5V Nominal |
| 8 | TEST | input | Test Control Input; when HIGH, test charge is applied to A or B integrators on next CONV transition. |
| 9 | CONV | input | Controls which integrator side connects to input; CONV HIGH enables side A integration, CONV LOW enables side B integration; must be synchronized with CLK. |
| 10 | CLK | input | System Clock Input, 10MHz Nominal |
| 11 | DCLK | input | Serial Data Clock Input that operates the serial I/O shift register. |
| 12 | DXMIT | input | Serial Data Transmit Enable Input; when LOW, enables the internal serial shift register. |
| 13 | DIN | input | Serial Digital Input used to cascade multiple DDC112 units. |
| 14 | DVDD | power_in | Digital Supply, +5V Nominal |
| 15 | DGND | power_in | Digital Ground |
| 16 | DOUT | tri_state | Serial Data Output with high-impedance state when DXMIT is HIGH. |
| 17 | DVALID | output | Data Valid Output; LOW value indicates valid data is available in serial I/O register. |
| 18 | RANGE0 | input | Range Control Input 0 (least significant bit) for full-scale range selection. |
| 19 | RANGE1 | input | Range Control Input 1 for full-scale range selection. |
| 20 | RANGE2 | input | Range Control Input 2 (most significant bit) for full-scale range selection. |
| 21 | AGND | power_in | Analog Ground |
| 22 | VREF | power_in | External Reference Input, +4.096V Nominal; used for integrator reset and ΔΣ converter measurement. |
| 23 | CAP2A | passive | External Capacitor connection for Integrator 2A |
| 24 | CAP2A | passive | External Capacitor connection for Integrator 2A |
| 25 | CAP2B | passive | External Capacitor connection for Integrator 2B |
| 26 | CAP2B | passive | External Capacitor connection for Integrator 2B |
| 27 | AGND | power_in | Analog Ground |
| 28 | IN2 | input | Input 2: analog input for Integrators 2A and 2B, integrator selection controlled by CONV input. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-28-300mil |
| Category | Data Acquisition |
| Pins | 28 |
CAD (KiCad official)
- Symbol:
DDC112U - Footprint:
Package_SO:SOIC-28W_7.5x17.9mm_P1.27mm - 3D model: SOIC-28-300mil (KiCad packages3D, STEP)
- 3D model files:
ddc112u-etched.step/ddc112u-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ddc112u.step/ddc112u.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (37 pp, sha256
563a1029aa722041, retrieved 2026-10-06, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-4-5-20251001(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).