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参数资料
| 型号： | ADC0817 |
| 厂商： | National Semiconductor Corporation |
| 元件分类： | 串行ADC |
| 英文描述： | 8-BitμP Compatible A/D Converters with 16-Channel Multiplexer(带16通道多路器的8位μP兼容A/D转换器) |
| 中文描述： | 8BitμP兼容的A / D转换器的16通道多路复用器（带16通道多路器的8位微处理器兼容的A / D转换器） |
| 文件页数： | 11/13页 |
| 文件大小： | 245K |
| 代理商： | ADC0817 |
Applications Information
(Continued)
3.0 CONVERTER EQUATIONS
The transition between adjacent codes N and N + 1 is given
by:
(2)
The center of an output code N is given by:
(3)
The output code N for an arbitrary input are the integers
within the range:
(4)
where: V
IN
= Voltage at comparator input
V
REF
= Voltage at Ref(+)
V
REF
= Voltage at Ref()
V
TUE
= Total unadjusted error voltage (typically
V
REF
(+)
÷
512)
4.0 ANALOG COMPARATOR INPUTS
The dynamic comparator input current is caused by the pe-
riodic switching of on-chip stray capacitances These are
connected alternately to the output of the resistor ladder/
switch tree network and to the comparator input as part of
the operation of the chopper stabilized comparator.
The average value of the comparator input current varies di-
rectly with clock frequency and with V
IN
as shown in Figure
6
If no filter capacitors are used at the analog or comparator in-
puts and the signal source impedances are low, the com-
parator input current should not introduce converter errors,
as the transient created by the capacitance discharge will die
out before the comparator output is strobed.
If input filter capacitors are desired for noise reduction and
signal conditioning they will tend to average out the dynamic
comparator input current. It will then take on the characteris-
tics of a DC bias current whose effect can be predicted con-
ventionally. See AN-258 for further discussion.
DS005277-15
FIGURE 13. Symmetrically Centered Reference
www.national.com
11
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PDF描述 |
|---|---|
| ADC0816CCJ | 8-Bit レP Compatible A/D Converters with 16-Channel Multiplexer |
| ADC0816CCN | 8-Bit レP Compatible A/D Converters with 16-Channel Multiplexer |
| ADC0817CCN | 8-Bit レP Compatible A/D Converters with 16-Channel Multiplexer |
| ADC0819BCN | 8-Bit Serial I/O A/D Converter with 19-Channel Multiplexer |
| ADC0819BCV | 8-Bit Serial I/O A/D Converter with 19-Channel Multiplexer |
相关代理商/技术参数 |
参数描述 |
|---|---|
| ADC0817CCN | 功能描述:模数转换器 - ADC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
| ADC0817CCN | 制造商:Texas Instruments 功能描述:DATA ACQUISITION UNIT DIP40 817 |
| ADC0817CCN/A+ | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Analog-to-Digital Converter， 8-Bit |
| ADC0817CCN/NOPB | 功能描述:模数转换器 - ADC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
| ADC0819 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:8-Bit Serial I/O A/D Converter with 19-Channel Multiplexer |
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