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AFE439A2

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8-bit 2-channel smart DAC with PWM output, ADC, PI loop and EEPROM for H-Bridge based TEC control

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Data sheet

AFE439A2

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Data sheet Order now

Product details

Resolution (Bits) 8 Number of DAC channels 2 Interface type I2C Features (x1) PWM, EEPROM, Smart DAC Architecture String Rating Catalog Operating temperature range (°C) -40 to 125
Resolution (Bits) 8 Number of DAC channels 2 Interface type I2C Features (x1) PWM, EEPROM, Smart DAC Architecture String Rating Catalog Operating temperature range (°C) -40 to 125
WQFN (RTE) 16 9 mm² 3 x 3
  • Integrated proportional-integral (PI) control
    • Standalone operation from nonvolatile memory (NVM)
    • Programmable proportional and integral gain
    • Comparator input for output clamping
    • Programmable min, max, and common-mode values for output
    • Programmable loop-phase inversion
  • AFE639D2
    • I 2C controller for external digital temperature sensor interface
    • 12-bit DAC output: 4-LSB DNL, 1-LSB DNL
  • AFE539A4
    • 10-bit ADC input: 2-LSB INL, 1-LSB DNL
    • 10-bit DAC output: 1-LSB INL and DNL
  • AFE439A2
    • 8-bit ADC input: 1-LSB INL and DNL
    • 7-bit duty-cycle PWM output
  • Programmable comparator for fault management
  • High impedance output on DAC channel when VDD is off
  • 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 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)
  • Integrated proportional-integral (PI) control
    • Standalone operation from nonvolatile memory (NVM)
    • Programmable proportional and integral gain
    • Comparator input for output clamping
    • Programmable min, max, and common-mode values for output
    • Programmable loop-phase inversion
  • AFE639D2
    • I 2C controller for external digital temperature sensor interface
    • 12-bit DAC output: 4-LSB DNL, 1-LSB DNL
  • AFE539A4
    • 10-bit ADC input: 2-LSB INL, 1-LSB DNL
    • 10-bit DAC output: 1-LSB INL and DNL
  • AFE439A2
    • 8-bit ADC input: 1-LSB INL and DNL
    • 7-bit duty-cycle PWM output
  • Programmable comparator for fault management
  • High impedance output on DAC channel when VDD is off
  • 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 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)

The 8-bit AFE439A2, 10-bit AFE539A4, and 12-bit AFE639D2 ( AFEx39xx) are smart analog front ends (AFE) for thermoelectric cooling (TEC) control using voltage or PWM output. The AFE639D2 supports an I 2C controller interface to interface with external digital temperature sensors. The AFE639D2 and AFE539A4 support voltage output and AFE439A2 supports PWM output. The AFEx39xx support a comparator channel for fault management. These devices also support Hi-Z power-down mode and Hi-Z output on the DAC channel during power off. These devices have an integrated state machine that is preprogrammed as a proportional-integral (PI) controller. The AFEx39xx are an excellent choice for TEC control, temperature control, and dynamic headroom control applications. The AFEx39xx integrate advanced features, internal reference, and NVM that enable this smart AFE for processor-less applications and design reuse.

The 8-bit AFE439A2, 10-bit AFE539A4, and 12-bit AFE639D2 ( AFEx39xx) are smart analog front ends (AFE) for thermoelectric cooling (TEC) control using voltage or PWM output. The AFE639D2 supports an I 2C controller interface to interface with external digital temperature sensors. The AFE639D2 and AFE539A4 support voltage output and AFE439A2 supports PWM output. The AFEx39xx support a comparator channel for fault management. These devices also support Hi-Z power-down mode and Hi-Z output on the DAC channel during power off. These devices have an integrated state machine that is preprogrammed as a proportional-integral (PI) controller. The AFEx39xx are an excellent choice for TEC control, temperature control, and dynamic headroom control applications. The AFEx39xx integrate advanced features, internal reference, and NVM that enable this smart AFE for processor-less applications and design reuse.
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* Data sheet AFEx39xx 12-Bit, 10-Bit, and 8-Bit Smart Analog Front Ends for TEC Control Using Voltage and PWM Output datasheet (Rev. A) PDF | HTML 03 Jul 2023

Design & development

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Supported products & hardware

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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