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Precision DACs (≤10 MSPS)

AFE43902-Q1

ACTIVE

Automotive two-channel 8-bit smart DAC with multislope thermal foldback control with built-in ADC

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Data sheet

AFE43902-Q1

ACTIVE
Data sheet Order now

Product details

Resolution (Bits) 8 Number of DAC channels 2 Interface type I2C, SPI 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, Integrated ADC, 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
Resolution (Bits) 8 Number of DAC channels 2 Interface type I2C, SPI 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, Integrated ADC, 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
WQFN (RTE) 16 9 mm² 3 x 3
  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, T A
  • Multislope thermal foldback
    • 10-bit analog-to-digital converter (ADC) input
    • Digital-to-analog converter (DAC) output
      • 10-bit ( AFE53902-Q1)
      • 8-bit ( AFE43902-Q1)
    • Pulse Width Modulation (PWM) output with 7‑bit duty cycle
    • Standalone operation from nonvolatile memory (NVM)
    • Look-up table (LUT) based parameter configuration
    • Piecewise-linearizer for thermistor
  • Automatically detects I 2C or SPI
    • 1.62-V V IH with V DD = 5.5 V
  • VREF/MODE pin selects between programming and standalone modes
  • User-programmable NVM
  • Internal, external, or VDD reference
  • Wide operating range
    • Power supply: 1.8 V to 5.5 V
  • 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
  • Multislope thermal foldback
    • 10-bit analog-to-digital converter (ADC) input
    • Digital-to-analog converter (DAC) output
      • 10-bit ( AFE53902-Q1)
      • 8-bit ( AFE43902-Q1)
    • Pulse Width Modulation (PWM) output with 7‑bit duty cycle
    • Standalone operation from nonvolatile memory (NVM)
    • Look-up table (LUT) based parameter configuration
    • Piecewise-linearizer for thermistor
  • Automatically detects I 2C or SPI
    • 1.62-V V IH with V DD = 5.5 V
  • VREF/MODE pin selects between programming and standalone modes
  • User-programmable NVM
  • Internal, external, or VDD reference
  • Wide operating range
    • Power supply: 1.8 V to 5.5 V
  • Tiny package: 16-pin WQFN (3 mm × 3 mm)

The 10-bit AFE53902-Q1 and 8-bit AFE43902-Q1 devices ( AFEx3902-Q1) are dual-channel, smart analog front ends (AFE) targeted for multislope thermal foldback of LED lighting. The output of LED lights reduce with an increase in temperature. Multislope thermal foldback helps maintain a steady light output from LEDs, irrespective of temperature change, while limiting the LED temperature to programmed thresholds.

The AFEx3902-Q1 have an ADC for temperature input and a DAC or PWM generator as an output. These devices have an integrated state machine that is preprogrammed as a multislope thermal foldback controller. The AFEx3902-Q1 are an excellent choice for thermal foldback of automotive rear lights and headlights, as well as horticulture lights. The AFEx3902-Q1 work independently from the parameters programed into the NVM, and thus enable these smart AFEs for processor-less applications and design reuse. These devices also automatically detect I 2C or SPI, and have an internal reference.

The 10-bit AFE53902-Q1 and 8-bit AFE43902-Q1 devices ( AFEx3902-Q1) are dual-channel, smart analog front ends (AFE) targeted for multislope thermal foldback of LED lighting. The output of LED lights reduce with an increase in temperature. Multislope thermal foldback helps maintain a steady light output from LEDs, irrespective of temperature change, while limiting the LED temperature to programmed thresholds.

The AFEx3902-Q1 have an ADC for temperature input and a DAC or PWM generator as an output. These devices have an integrated state machine that is preprogrammed as a multislope thermal foldback controller. The AFEx3902-Q1 are an excellent choice for thermal foldback of automotive rear lights and headlights, as well as horticulture lights. The AFEx3902-Q1 work independently from the parameters programed into the NVM, and thus enable these smart AFEs for processor-less applications and design reuse. These devices also automatically detect I 2C or SPI, and have an internal reference.
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* Data sheet AFEx3902-Q1 Smart Analog Front End (AFE) for Multislope Thermal Foldback and LUT-Based Control With I2C and SPI datasheet PDF | HTML 29 Jun 2023
Product overview Smart DAC Product Selection Guide PDF | HTML 01 Jul 2024

Design & development

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Products
Precision DACs (≤10 MSPS)
AFE432A3W — 8-bit 300-mA current-source DAC with 10-bit SAR ADC, VDAC, NVM and GPI AFE43902-Q1 — Automotive two-channel 8-bit smart DAC with multislope thermal foldback control with built-in ADC AFE439A2 — 8-bit 2-channel smart DAC with PWM output, ADC, PI loop and EEPROM for H-Bridge based TEC control AFE532A3W — 10-bit 300-mA current-source DAC with 10-bit SAR ADC, 10-bit VDAC, NVM and GPI AFE53902-Q1 — Automotive 10-bit 2-channel smart DAC with ADC and PWM out for multislope thermal foldback control AFE539A4 — 10-bit 4-channel smart DAC with voltage output, ADC, EEPROM and PI loop for DC/DC based TEC control AFE539F1-Q1 — Automotive single-channel ten-bit smart AFE with PWM active discharge control AFE639D2 — Two-channel 12-bit smart analog front end (AFE) with TEC control with built-in ADC and DAC DAC43204 — 8-bit 4-channel voltage/current output smart DAC with Hi-Z, EEPROM and waveform generator DAC43901-Q1 — Automotive one-channel 8-bit smart DAC with turn-indicator animation and fade-in fade-out control DAC43902-Q1 — Automotive 8-bit 2-channel smart DAC with PWM for turn indicator and fade-in fade-out light control DAC53001 — 10-bit, 1-channel low-power voltage/current output smart DAC with Hi-Z, EEPROM, waveform generator DAC53002 — 10-bit, 2-channel low-power voltage/current output smart DAC with Hi-Z, EEPROM, waveform generator DAC53004 — 10-bit, 4-channel low-power voltage/current output smart DAC with Hi-Z, EEPROM, waveform generator DAC53004W — 10-bit, 4-channel low-power VOUT and IOUT smart DAC with Hi-Z, EEPROM, waveform generator in WCSP DAC53202 — 10-bit 2-channel voltage/current output smart DAC with Hi-Z, EEPROM and waveform generator DAC53204 — 10-bit 4-channel voltage/current output smart DAC with Hi-Z, EEPROM and waveform generator DAC53204-Q1 — Automotive, 10-bit 4-channel voltage/current output smart DAC with Hi-Z, EEPROM, waveform generator DAC53204W — 10-bit 4-channel voltage/current output smart DAC with Hi-Z, EEPROM and waveform generator in WCSP DAC532A3W — 10-bit 300-mA current-source DAC with 10-bit voltage-output DAC, supervisor comparator, NVM and GPI DAC539E4W — Four-channel 10-bit smart analog front end (AFE) with IF-THEN-ELSE control in WCSP package DAC539G2-Q1 — Automotive, 10-bit look-up-table based GPI-to-PWM converter for a single-wire error communication DAC63001 — 12-bit, 1-channel low-power voltage/current output smart DAC with Hi-Z, EEPROM, waveform generator DAC63002 — 12-bit, 2-channel low-power voltage/current output smart DAC with Hi-Z, EEPROM, waveform generator DAC63004 — 12-bit, 4-channel low-power voltage/current output smart DAC with Hi-Z, EEPROM, waveform generator DAC63004W — Ultra-low-power four-channel 12-bit smart DAC in wafer chip scale package with I²C, SPI and PWM DAC63204 — 12-bit 4-channel voltage/current output smart DAC with Hi-Z, EEPROM and waveform generator
Hardware development
Evaluation board
DAC63204EVM — DAC63204 evaluation module for four-channel, 12-bit, VOUT and IOUT smart DAC AFE532A3WEVM — AFE532A3W evaluation module for 8-bit and 10-bit 300-mA current-source DAC AFE539A4EVM — AFE539A4 evaluation module DAC63004WCSP-EVM — DAC63004W evaluation module for four-channel 12-bit smart DAC in wafer chip scale package (WCSP) SMARTDAC-DIY-EVM — A do-it-yourself evaluation module for smart DAC devices
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