# ADS8513IBDW

**Texas Instruments** · Analog To Digital Converters (ADC) · SOIC-16-300mil

ADS8513IBDW from Texas Instruments, in a SOIC-16-300mil. 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 | R1IN | input | Analog input whose allowed range and input impedance depend on how it is connected per Table 1, and which tolerates ±25V per the absolute maximum ratings. |
| 2 | GND | power_in | Ground pin; the datasheet specifies ground voltage differences limited to ±0.3V. |
| 3 | R2IN | input | Analog input whose allowed range and input impedance depend on how it is connected per Table 1, and which tolerates ±25V per the absolute maximum ratings. |
| 4 | R3IN | input | Analog input whose allowed range and input impedance depend on how it is connected per Table 1, and which tolerates ±25V per the absolute maximum ratings. |
| 5 | BUF | output | Reference buffer output that must be connected to R1IN, R2IN, or R3IN as needed for the selected input range. |
| 6 | CAP | passive | Reference buffer compensation node that should be decoupled to ground with a 1µF tantalum capacitor in parallel with a 0.01µF ceramic capacitor. |
| 7 | REF | bidirectional | Reference input/output that outputs the internal 2.5V reference through a series 4kΩ resistor, should be decoupled with 1µF to 2.2µF tantalum to ground, and is overridden if an external reference voltage is applied. |
| 8 | GND | power_in | Ground pin; the datasheet specifies ground voltage differences limited to ±0.3V. |
| 9 | DATACLK | bidirectional | Serial data clock that is an output providing the synchronous clock when EXT/INT is low (3-stated when CS is high) and an input requiring an external clock when EXT/INT is high. |
| 10 | DATA | output | Serial data output carrying the result of the last completed conversion, synchronized to DATACLK, and 3-stated when CS is high. |
| 11 | EXT/INT | input | Selects the DATACLK source: high requires an externally supplied serial clock, low derives the clock from the internal conversion clock. |
| 12 | CONV | input | A falling edge places the sample/hold in hold and starts a conversion regardless of CS state, and is ignored if a conversion is already in progress. |
| 13 | CS | input | Chip select that 3-states DATA, BUSY, and DATACLK (when EXT/INT is low) when high and enables all outputs when low. |
| 14 | BUSY | output | Goes low when a conversion starts and remains low throughout the conversion, and is 3-stated when CS is high. |
| 15 | PWRD | input | When high, places most of the device circuitry in a low-power mode, with PWRD and REFD high limited to 50µW maximum. |
| 16 | VS | power_in | +5V supply input, specified at 4.75V to 5.25V, decoupled with a 0.1µF ceramic capacitor in parallel with a 10µF tantalum capacitor. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-16-300mil |
| Category | Data Acquisition |
| Pins | 16 |

## CAD (KiCad official)

- Symbol: `ADS8513IBDW`
- Footprint: `Package_SO:SOIC-16_3.9x9.9mm_P1.27mm`
- 3D model: SOIC-16-300mil (KiCad packages3D, STEP)
- 3D model files: `ads8513ibdw-etched.step` / `ads8513ibdw-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ads8513ibdw.step` / `ads8513ibdw.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/cn/lit/gpn/ads8513) (38 pp, sha256 `2b133af50234f381`, retrieved 2026-10-08, tier: lcsc)
- **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](docs/ads8513ibdw-datasheet.pdf)