at90pwm81-16se ATMEL Corporation, at90pwm81-16se Datasheet - Page 226

• Manufacturer Part Number: at90pwm81-16se
• Description: 8-bit Avr Microcontroller With 8k Bytes In- System Programmable Flash
• Manufacturer: ATMEL Corporation

19. Digital to Analog Converter - DAC
19.1
226
Features
AT90PWM81
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The AT90PWM81 features a 10-bit Digital to Analog Converter. This DAC can be used for the analog
comparators
The DAC has a separate analog supply voltage pin, AV
V
The reference voltage is the same as the one used for the ADC,
ADMUX” on page
ence may be externally decoupled at the AREF pin by a capacitor for better noise performance.
CC
10 bits resolution
8 bits linearity
+/- 0.5 LSB accuracy between 100mV and AVcc-100mV
Vout = DAC*Vref/1023
The DAC could be connected to the negative inputs of the analog comparators and/or to a dedicated output
driver.
Output impedance around 1KOhm.
. See the paragraph
216.. These nominally 2.56V Vref or AV
“ADC Noise Canceler” on page 209
CC
. AV
on how to connect this pin.
CC
CC
are provided On-chip. The voltage refer-
must not differ more than ± 0.3V from
See “ADC Multiplexer Register –
7734M–AVR–03/10