參數(shù)資料
型號： MSC1211Y3PAGRG4
廠商： TEXAS INSTRUMENTS INC
元件分類： 微控制器/微處理器
英文描述： 8-BIT, FLASH, 40 MHz, MICROCONTROLLER, PQFP64
封裝： GREEN, PLASTIC, TQFP-64
文件頁數(shù)： 36/111頁
文件大?。?/td> 1113K
代理商： MSC1211Y3PAGRG4
MSC1211, MSC1212
MSC1213,MSC1214
SBAS323G JUNE 2004 REVISED OCTOBER 2007
www.ti.com
30
VDAC
The architecture of the MSC1211/12/13/14 consists of a
string DAC followed by an output buffer amplifier.
Figure 17 shows a block diagram of the DAC architecture.
The input coding to the DAC is straight binary, so the ideal
output voltage is given by:
VDAC
+ V
REF @
D
65536
where D = decimal equivalent of the binary code that is
loaded to the DAC register; it can range from 0 to 65535.
DAC RESISTOR STRING
The DAC selects the voltage from a string of resistors from
the reference to AGND. It is essentially a string of resistors,
each of value R. The code loaded into the DAC register
determines at which node on the string the voltage is
tapped off to be fed into the output amplifier by closing one
of the switches connecting the string to the amplifier. It is
ensured monotonic because of the design architecture.
DAC OUTPUT AMPLIFIER
The output buffer amplifier is capable of generating
rail-to-rail voltages on its output, which provides an output
range of AGND to AVDD. It is capable of driving a load of
2k
in parallel with 1000pF to GND. The source and sink
capabilities of the output amplifier can be seen in the
typical curves. The slew rate is 1V/
s with a full-scale
settling time of 8
s.
DAC REFERENCE
Each DAC can be selected to use the REFOUT/REF IN+
pin voltage or the supply voltage AVDD as the reference for
the DAC.
DAC LOADING
The DAC can be selected to be turned off with a 1k
,
100k
, or open circuit on the DAC outputs.
DAC3
DAC2
DAC1
DAC0
21
AIN3/VDAC3
AIN2/VDAC2
VDAC1
VDAC0
DAC
Sink
Connection
AIN0/IDAC0
RDAC0
AIN1/IDAC1
RDAC1
20
31
19
32
17
Current
Mirror
Current
Mirror
18
16
Sink
Source
Sink
Source
REFOUT/
REF IN+
AV
DD
30
REF
2.5V/1.25V
28
0.1
F
Figure 17. DAC Architecture
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MSC1211Y3PAGT 功能描述:數(shù)據(jù)轉(zhuǎn)換系統(tǒng) Precision ADC & DACs w/8051 CPU & Flash RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換速率:0.001 MSPs 分辨率:24 bit 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel
MSC1211Y3PAGTG4 功能描述:數(shù)據(jù)轉(zhuǎn)換系統(tǒng) 8051 CPU w/ 8kB Mem 24B ADC & Quad 16B RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換速率:0.001 MSPs 分辨率:24 bit 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel
MSC1211Y4 制造商:TI 制造商全稱:Texas Instruments 功能描述:Precision Analog-to-Digital Converter (ADC) and Digital-to-Analog Converters (DACs) with 8051 Microcontroller and Flash Memory
MSC1211Y4PAGR 功能描述:數(shù)據(jù)轉(zhuǎn)換系統(tǒng) Precision ADC & DACs w/8051 CPU & Flash RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換速率:0.001 MSPs 分辨率:24 bit 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel
MSC1211Y4PAGRG4 功能描述:數(shù)據(jù)轉(zhuǎn)換系統(tǒng) Precision ADC & DACs w/8051 CPU & Flash RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換速率:0.001 MSPs 分辨率:24 bit 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel
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