DAC7311 12-Bit SPI DAC

@@ -0,0 +1,49 @@+# DAC7311++**Texas Instruments** · Digital-to-Analog Converter · SOT-23-6++The DAC7311 is a single-channel, 12-bit voltage-output DAC with an SPI interface in a SOT-23-6 package. It uses the supply rail as its reference for a rail-to-rail output, draws little power, and includes a programmable power-down. Its tiny footprint suits set-point and bias generation in space-constrained designs. It is the 12-bit member of the DAC5311/6311/7311 family.++## Pinout++| Pin | Name | Type | Function |+|---|---|---|---|+| 1 | SYNC | input | Active-low, level-triggered frame synchronization input for the serial interface. When SYNC goes low, the input shift register is enabled and data are clocked in on the falling edges of SCLK; the DAC updates on the 16th SCLK unless SYNC is taken high before that edge, in which case the write is aborted and SYNC acts as an interrupt. |+| 2 | SCLK | input | Serial clock input. Data are transferred on the falling edge at clock rates up to 50 MHz. Schmitt-triggered CMOS input. |+| 3 | DIN | input | Serial data input. Data are clocked into the 16-bit input shift register on the falling edge of SCLK while SYNC is low. |+| 4 | AVDD/VREF | power_in | Analog power supply input, 2.0 V to 5.5 V. Also serves as the DAC reference voltage that sets the full-scale output range. Should be well decoupled to GND. |+| 5 | GND | power_in | Ground reference point for all circuitry on the part. |+| 6 | VOUT | output | Buffered analog output from the DAC. Rail-to-rail output amplifier swings from 0 V to AVDD; drives up to 1000 pF capacitive load with RL = 2 kΩ. |++## Key specifications++| Parameter | Value |+|---|---|+| Resolution | 12-bit, 1 channel |+| Output | Voltage output (rail-to-rail), VDD reference |+| Interface | SPI (up to 50 MHz) |+| Settling time | 5 us typ |+| Power-down | Programmable (3 modes) |+| Supply voltage | 2.7 V to 5.5 V |+| Operating temperature | -40 C to 125 C |++## Ordering variants++- `DAC7311IDCKR`+- `DAC7311IDCKT`++## CAD (KiCad official)++- Symbol: `dac7311.kicad_sym`+- Footprint: `dac7311.kicad_mod`+- 3D model: SOT-23-6 body from KiCad `Package_TO_SOT_SMD/SOT-23-6`.++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/lit/ds/symlink/dac7311.pdf) (40 pp, sha256 `212625aa6189ace3`, retrieved 2026-08-17, tier: manufacturer)+- **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/dac7311-datasheet.pdf)

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