- 您現(xiàn)在的位置：買(mǎi)賣(mài)IC網(wǎng) > PDF目錄378275 > AD-C0838CCN (National Semiconductor Corporation) 8-Bit Serial I/O A/D Converters with Multiplexer Options PDF資料下載
參數(shù)資料
| 型號(hào)： | AD-C0838CCN |
| 廠(chǎng)商： | National Semiconductor Corporation |
| 元件分類(lèi)： | 串行ADC |
| 英文描述： | 8-Bit Serial I/O A/D Converters with Multiplexer Options |
| 中文描述： | 8位串行I /辦公自動(dòng)化/ D轉(zhuǎn)換器多路復(fù)用選項(xiàng) |
| 文件頁(yè)數(shù)： | 12/32頁(yè) |
| 文件大?。?/td> | 678K |
| 代理商： | AD-C0838CCN |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)當(dāng)前第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)第17頁(yè)第18頁(yè)第19頁(yè)第20頁(yè)第21頁(yè)第22頁(yè)第23頁(yè)第24頁(yè)第25頁(yè)第26頁(yè)第27頁(yè)第28頁(yè)第29頁(yè)第30頁(yè)第31頁(yè)第32頁(yè)
Functional Description
1.0 MULTIPLEXER ADDRESSING
The design of these converters utilizes a sample-data com-
parator structure which provides for a differential analog in-
put to be converted by a successive approximation routine.
The actual voltage converted is always the difference be-
tween an assigned “+” input terminal and a “” input terminal.
The polarity of each input terminal of the pair being con-
verted indicates which line the converter expects to be the
most positive. If the assigned “+” input is less than the “” in-
put the converter responds with an all zeros output code.
A unique input multiplexing scheme has been utilized to pro-
vide multiple analog channels with software-configurable
single-ended, differential, or a new pseudo-differential option
which will convert the difference between the voltage at any
analog input and a common terminal. The analog signal con-
ditioning required in transducer-based data acquisition sys-
tems is significantly simplified with this type of input flexibility.
One converter package can now handle ground referenced
inputs and true differential inputs as well as signals with
some arbitrary reference voltage.
A particular input configuration is assigned during the MUX
addressing sequence, prior to the start of a conversion. The
MUX address selects which of the analog inputs are to be
enabled and whether this input is single-ended or differential.
In the differential case, it also assigns the polarity of the
channels. Differential inputs are restricted to adjacent chan-
nel pairs. For example channel 0 and channel 1 may be se-
lected as a different pair but channel 0 or 1 cannot act differ-
entially with any other channel. In addition to selecting
differential mode the sign may also be selected. Channel 0
may be selected as the positive input and channel 1 as the
negative input or vice versa. This programmability is best il-
lustrated by the MUX addressing codes shown in the follow-
ing tables for the various product options.
The MUX address is shifted into the converter via the DI line.
Because the ADC0831 contains only one differential input
channel with a fixed polarity assignment, it does not require
addressing.
The common input line on the ADC0838 can be used as a
pseudo-differential input. In this mode, the voltage on this pin
is treated as the “” input for any of the other input channels.
This voltage does not have to be analog ground; it can be
any reference potential which is common to all of the inputs.
This feature is most useful in single-supply application where
the analog circuitry may be biased up to a potential other
than ground and the output signals are all referred to this
potential.
TABLE 1. Multiplexer/Package Options
Part
Number
ADC0831
ADC0832
ADC0834
ADC0838
Number of Analog Channels
Single-Ended
1
2
4
8
Number of
Package Pins
8
8
14
20
Differential
1
1
2
4
www.national.com
12
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ADC0831 | 8-Bit Serial I/O A/D Converters with Multiplexer Options(8位串行輸入/輸出帶多路選擇A/D轉(zhuǎn)換器) |
| AD101 | Circular Connector; No. of Contacts:6; Series:LJTPQ00R; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:11; Circular Contact Gender:Pin; Circular Shell Style:Wall Mount Receptacle; Insert Arrangement:11-98 |
| AD109 | Circular Connector; No. of Contacts:26; Series:LJTPQ00R; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:17; Circular Contact Gender:Pin; Circular Shell Style:Wall Mount Receptacle |
| AD110 | Circular Connector; MIL SPEC:MIL-DTL-38999 Series I; Body Material:Metal; Series:LJT; No. of Contacts:26; Connector Shell Size:17; Connecting Termination:Crimp; Circular Shell Style:Wall Mount Receptacle; Body Style:Straight RoHS Compliant: No |
| AD111 | SCRs 1.5 Amp, Planar |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ADC0838CCN | 制造商:Texas Instruments 功能描述:IC 8BIT ADC SERIAL DIP20 838 |
| ADC0838CCN/A+ | 制造商:未知廠(chǎng)家 制造商全稱(chēng):未知廠(chǎng)家 功能描述:Analog-to-Digital Converter， 8-Bit |
| ADC0838CCN/B+ | 制造商:未知廠(chǎng)家 制造商全稱(chēng):未知廠(chǎng)家 功能描述:Analog-to-Digital Converter， 8-Bit |
| ADC0838CCN/NOPB | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類(lèi)型:Differential 信噪比:107 dB 接口類(lèi)型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| ADC0838CCN/SL160884 | 制造商:Texas Instruments 功能描述: |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。
