Tiny 8-bit voltage-output DAC in a six-pin SC70, driven over a 3-wire SPI. It uses its own supply as the reference, so the full-scale output tracks AVDD and no external reference is needed, and it settles quickly at low power. The small size and simple interface make it a cheap way to add a programmable analog level, a bias, a setpoint, or a contrast voltage, next to the circuit it controls. The 8-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 is updated after the 16th clock cycle unless SYNC is taken high early, which aborts the write and asserts SYNC as an interrupt.
2	SCLK	input	Serial clock input. Data on DIN are transferred into the input shift register on the falling edge of SCLK at 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. Compatible with SPI, QSPI, Microwire, and DSP interfaces.
4	AVDD/VREF	power_in	Combined analog supply and reference input, 2.0 V to 5.5 V. Sets the DAC full-scale output range (VOUT range is 0 V to AVDD). Bypass to GND with a low-ESR ceramic capacitor close to the pin.
5	GND	power_in	Ground reference for all analog and digital circuitry on the device.
6	VOUT	output	Analog voltage output from the 8-bit DAC. Rail-to-rail output buffer amplifier drives 0 V to AVDD; stable with capacitive loads up to 1000 pF (RL = 2 kΩ). DC output impedance is 0.5 Ω.

Key specifications

Parameter	Value
Type	Voltage-output DAC
Resolution	8-bit
Interface	SPI (3-wire)
Reference	AVDD (supply)
Settling	Fast, low glitch
Supply	2.7-5.5 V
Package	SC70-6

Ordering variants

Same part, different packaging or reel option.

DAC5311IDCKR (SC70-6)
DAC6311IDCKR (10-bit)
DAC7311IDCKR (12-bit)

CAD (KiCad official)

Symbol: Analog_DAC:DAC5311xDCK (KiCad official)
Footprint: Package_TO_SOT_SMD:SOT-363_SC-70-6
3D model: SC70-6 (KiCad packages3D, STEP)

Provenance

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

Datasheet: Texas Instruments datasheet (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