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参数资料
| 型号： | ADC0833BCN |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | ADC |
| 英文描述： | 8-Bit Serial I/O A/D Converter with 4-Channel Multiplexer |
| 中文描述： | 4-CH 8-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDIP14 |
| 封装： | 0.300 INCH, PLASTIC, DIP-14 |
| 文件页数： | 10/20页 |
| 文件大小： | 316K |
| 代理商： | ADC0833BCN |
Functional Description
(Continued)
Since the input configuration is under software control, it
can be modified, as required, at each conversion. A channel
can be treated as a single-ended, ground referenced input
for one conversion; then it can be reconfigured as part of a
differential channel for another conversion. Figure 1 illus-
trates the input flexibility which can be achieved.
The analog input voltages for each channel can range from
50 mV below ground to 50mV above V
CC
(typically 5V) with-
out degrading conversion accuracy.
2.0 THE DIGITAL INTERFACE
A most important characteristic of these converters is their
serial data link with the controlling processor. Using a serial
communication format offers two very significant system im-
provements; it allows more function to be included in the
converter package with no increase in package size and it
can eliminate the transmission of low level analog signals by
locating the converter right at the analog sensor; transmit-
ting highly noise immune digital data back to the host proc-
essor.
To understand the operation of these converters it is best to
refer to the Timing Diagram and Functional Block Diagram
and to follow a complete conversion sequence.
1. A conversion is initiated by first pulling the CS (chip se-
lect) line low. This line must be held low for the entire con-
version. The converter is now waiting for a start bit and its
MUX assignment word.
2. A clock is then generated by the processor (if not provid-
ed continuously) and output to the A/D clock input.
3. On each rising edge of the clock the status of the data in
(DI) line is clocked into the MUX address shift register. The
start bit is the first logic ‘‘1’’ that appears on this line (all
leading zeros are ignored). Following the start bit the con-
verter expects the next 4 bits to be the MUX assignment
word.
4 Single-Ended
2 Differential
Mixed Mode
TL/H/5607–6
FIGURE 1. Analog Input Multiplexer Options for the ADC0833
10
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| ADC0833CCJ | 8-Bit Serial I/O A/D Converter with 4-Channel Multiplexer |
| ADC0833CCN | 8-Bit Serial I/O A/D Converter with 4-Channel Multiplexer |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ADC0833BCN/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 |
| ADC0833BCN/B+ | 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 |
| ADC0833CCJ | 制造商:NSC 制造商全称:National Semiconductor 功能描述:8-Bit Serial I/O A/D Converter with 4-Channel Multiplexer |
| ADC0833CCN | 制造商: 功能描述: 制造商:undefined 功能描述: |
| ADC0833CCN/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 |
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