参数资料
型号: TSC80C31-20CHR
厂商: ATMEL CORP
元件分类: 微控制器/微处理器
英文描述: 8-BIT, 20 MHz, MICROCONTROLLER, CQCC44
封装: LCC-44
文件页数: 90/143页
文件大小: 4602K
代理商: TSC80C31-20CHR
50
XMEGA A3BU [DATASHEET]
8362F–AVR–02/2013
30.
DAC – 12-bit Digital to Analog Converter
30.1
Features
One Digital to Analog Converter (DAC)
12-bit resolution
Two independent, continuous-drive output channels
Up to one million samples per second conversion rate per DAC channel
Built-in calibration that removes:
Offset error
Gain error
Multiple conversion trigger sources
On new available data
Events from the event system
High drive capabilities and support for
Resistive loads
Capacitive loads
Combined resistive and capacitive loads
Internal and external reference options
DAC output available as input to analog comparator and ADC
Low-power mode, with reduced drive strength
Optional DMA transfer of data
30.2
Overview
The digital-to-analog converter (DAC) converts digital values to voltages. The DAC has two channels, each with 12-bit
resolution, and is capable of converting up to one million samples per second (msps) on each channel. The built-in
calibration system can remove offset and gain error when loaded with calibration values from software.
Figure 30-1. DAC overview.
DAC0
DAC1
CTRLA
CH1DATA
CH0DATA
Trigger
Internal Output
enable
Enable
Internal 1.00V
AREFA
AREFB
Reference
voltage
AVCC
Output
Driver
Output
Driver
D
A
T
A
Int.
driver
D
A
T
A
CTRLB
DMA req
(Data Empty)
DMA req
(Data Empty)
Select
12
Select
Enable
To
AC/ADC
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