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DAC43902-Q1
  • DAC43902-Q1
  • DAC43902-Q1
  • DAC43902-Q1

DAC43902-Q1

ACTIVE

Automotive 8-bit 2-channel smart DAC with PWM for turn indicator and fade-in fade-out light control

Texas Instruments DAC43902-Q1 Product Info

1 April 2026 0

Parameters

Resolution (Bits)

8

Number of DAC channels

2

Interface type

I2C

Output type

Buffered Voltage

Output voltage range (V)

0 to 5.5

INL (max) (±LSB)

1

Settling time (µs)

20

Reference type

Ext, Int

Architecture

String

Rating

Automotive

Features

(x1) PWM, EEPROM, Smart DAC

Sample/update rate (Msps)

0.025

Power consumption (typ) (mW)

0.4

Operating temperature range (°C)

-40 to 125

Product type

Smart DAC

Package

WQFN (RTE)-16-9 mm² 3 x 3

Features

  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, T A
  • Pulse-width modulation (PWM) output on digital pins (218 Hz to 48.8 kHz)
  • Logarithmic dimming
  • LED fade-in fade-out with GPIO control
  • Sequential turn indicator animation
  • Programmable comparators and DACs configured as GPIO
  • Automatically detects I 2C or SPI
    • 1.62-V V IH with V DD = 5.5 V
  • VREF/MODE pin to select between programming and standalone modes
  • User-programmable nonvolatile memory (NVM)
  • Internal, external or power supply as reference
  • Wide operating range
    • Power supply: 1.8 V to 5.5 V
    • Temperature range: –40˚C to +125˚C
  • Tiny package: 16-pin WQFN (3 mm × 3 mm)
  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, T A
  • Pulse-width modulation (PWM) output on digital pins (218 Hz to 48.8 kHz)
  • Logarithmic dimming
  • LED fade-in fade-out with GPIO control
  • Sequential turn indicator animation
  • Programmable comparators and DACs configured as GPIO
  • Automatically detects I 2C or SPI
    • 1.62-V V IH with V DD = 5.5 V
  • VREF/MODE pin to select between programming and standalone modes
  • User-programmable nonvolatile memory (NVM)
  • Internal, external or power supply as reference
  • Wide operating range
    • Power supply: 1.8 V to 5.5 V
    • Temperature range: –40˚C to +125˚C
  • Tiny package: 16-pin WQFN (3 mm × 3 mm)

Description

The DAC43901-Q1 and DAC43902-Q1 ( DAC4390x-Q1) are a family of automotive, 8-bit smart DACs with dual and quad PWM outputs. The DAC43901-Q1 provides two PWM outputs, and the DAC43902-Q1 provides four PWM outputs. The DAC channels also act as trigger inputs or outputs. The DAC4390x-Q1 provides a preconfigured state machine that logic generates logarithmic dimming with configurable timings. The PWM-based logarithmic dimming is applicable in logarithmic fade-in and fade-out applications in automotive interior and exterior lighting. The DAC4390x-Q1 also support sequential animation applicable for automotive turn-indicator lights. These devices provide NVM for storing the configurations. These smart DACs function without the need for a processor ( processor-less operation) using GPIOs and NVM.

These devices automatically detect I 2C or SPI and have an internal reference. The feature set combined with the tiny package and low power make the smart DACs an excellent choice for applications in automotive light animation.

The DAC43901-Q1 and DAC43902-Q1 ( DAC4390x-Q1) are a family of automotive, 8-bit smart DACs with dual and quad PWM outputs. The DAC43901-Q1 provides two PWM outputs, and the DAC43902-Q1 provides four PWM outputs. The DAC channels also act as trigger inputs or outputs. The DAC4390x-Q1 provides a preconfigured state machine that logic generates logarithmic dimming with configurable timings. The PWM-based logarithmic dimming is applicable in logarithmic fade-in and fade-out applications in automotive interior and exterior lighting. The DAC4390x-Q1 also support sequential animation applicable for automotive turn-indicator lights. These devices provide NVM for storing the configurations. These smart DACs function without the need for a processor ( processor-less operation) using GPIOs and NVM.

These devices automatically detect I 2C or SPI and have an internal reference. The feature set combined with the tiny package and low power make the smart DACs an excellent choice for applications in automotive light animation.

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