DACx3508 Octal, 10-Bit or 8-Bit, SPI Interface, Buffered Voltage Output DACs

in Tiny 3 × 3 WQFN Package

1 Features

• ±1-LSB INL and DNL

• Wide operating range

– Power supply: 1.8 V to 5.5 V

– Temperature range: –40°C to +125°C

• 3-wire SPI interface

• LDAC pin for simultaneous output update

• Very low power: 0.1 mA/channel at 1.8 V

• Low-power start-up mode: Outputs powered down

• Tiny package

– 16-pin WQFN (3 mm × 3 mm)

2 Applications

• Multifunction printer

• Display panel for TV

• OLED TV

• Virtual reality headset

• Currency counter

• Automatic teller machine (ATM)

3 Description

The

10-bit

DAC53508

and

8-bit

DAC43508

(DACx3508) are low-power, eight-channel, voltage-

output, digital-to-analog converters (DACs). The

DACx3508 are specified monotonic by design across

a wide power supply range from 1.8 V to 5.5 V. Using

an external reference, the DACx3508 provides a full-

scale output voltage range of 1.8 V to 5.5 V while

consuming 0.1

‑mA quiescent current per channel.

The DACx3508 also includes per channel, user

programmable, power down registers. These registers

facilitate the DAC output buffers to start in a 10 kΩ-

AGND power-down state, and remain in this state

until a power-up command is issued to these output

buffers.

Low quiescent current, wide power-supply range,

octal channel, and a per-channel power-down option

make the DACx3508 an excellent choice for high-

density, low-power, battery-operated systems.

The devices communicate through the 3-wire (write-

only) SPI interface. These devices also have a load

DAC (LDAC) and clear CLR inputs.

Device Information

PART NUMBER

PACKAGE(1)

BODY SIZE (NOM)

DAC53508

WQFN (16)

3.00 mm × 3.00 mm

DAC43508

(1)

For all available packages, see the orderable addendum at

the end of the data sheet.

VOUTA

DAC

Registers

BUF

Channel A

Power-Down Logic

Resistive Network

Power-On Reset

DACx3508

SCLK

SDI

SYNC

DAC

VDD

VREFIN

AGND

LDAC

Channel H

VOUTH

CLR

Block Diagram

DAC53508, DAC43508

SLASF08 – DECEMBER 2021

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.