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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
1 Features
- 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
- I2C 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
I2C or SPI
- 1.62-V VIH
with VDD = 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)
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