AFE539A4 Series
10-bit 4-channel smart DAC with voltage output, ADC, EEPROM and PI loop for DC/DC based TEC control
Manufacturer: Texas Instruments
Catalog
10-bit 4-channel smart DAC with voltage output, ADC, EEPROM and PI loop for DC/DC based TEC control
Key Features
• Integrated proportional-integral (PI) controlStandalone operation from nonvolatile memory (NVM)Programmable proportional and integral gainComparator input for output clampingProgrammable min, max, and common-mode values for outputProgrammable loop-phase inversionAFE639D2I 2C controller for external digital temperature sensor interface12-bit DAC output: 4-LSB DNL, 1-LSB DNLAFE539A410-bit ADC input: 2-LSB INL, 1-LSB DNL10-bit DAC output: 1-LSB INL and DNLAFE439A28-bit ADC input: 1-LSB INL and DNL7-bit duty-cycle PWM outputProgrammable comparator for fault managementHigh impedance output on DAC channel when VDD is offAutomatically detects I 2C or SPI1.62-V V IH with V DD = 5.5 VVREF/MODE pin selects between programming and standalone modesUser-programmable NVMInternal, external, or power supply as referenceWide operating rangePower supply: 1.8 V to 5.5 VTemperature range: –40˚C to +125˚CTiny package: 16-pin WQFN (3 mm × 3 mm)Integrated proportional-integral (PI) controlStandalone operation from nonvolatile memory (NVM)Programmable proportional and integral gainComparator input for output clampingProgrammable min, max, and common-mode values for outputProgrammable loop-phase inversionAFE639D2I 2C controller for external digital temperature sensor interface12-bit DAC output: 4-LSB DNL, 1-LSB DNLAFE539A410-bit ADC input: 2-LSB INL, 1-LSB DNL10-bit DAC output: 1-LSB INL and DNLAFE439A28-bit ADC input: 1-LSB INL and DNL7-bit duty-cycle PWM outputProgrammable comparator for fault managementHigh impedance output on DAC channel when VDD is offAutomatically detects I 2C or SPI1.62-V V IH with V DD = 5.5 VVREF/MODE pin selects between programming and standalone modesUser-programmable NVMInternal, external, or power supply as referenceWide operating rangePower supply: 1.8 V to 5.5 VTemperature range: –40˚C to +125˚CTiny package: 16-pin WQFN (3 mm × 3 mm)
Description
AI
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.
