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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

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