JPH0475435U - - Google Patents
Info
- Publication number
- JPH0475435U JPH0475435U JP11960590U JP11960590U JPH0475435U JP H0475435 U JPH0475435 U JP H0475435U JP 11960590 U JP11960590 U JP 11960590U JP 11960590 U JP11960590 U JP 11960590U JP H0475435 U JPH0475435 U JP H0475435U
- Authority
- JP
- Japan
- Prior art keywords
- converter
- reference voltage
- input
- bit
- external reference
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 6
Landscapes
- Analogue/Digital Conversion (AREA)
Description
第１図はこの考案の一実施例によるＡＤ変換装
置を示す機能ブロツク図、第２図は、第１図回路
の変換特性を説明する特性図、第３図及び第４図
はこの考案の他の実施例を示す機能ブロツク図、
第５図は従来のＡＤ変換装置を示す機能ブロツク
図、第６図は、従来の変換特性を示す特性図、第
７図は、従来の装置の問題点を説明する図である
。
図において、１はＡＤ変換器、２は基準電圧設
定回路、３は上端基準電圧、４は下端基準電圧、
５はアナログ入力、６はクロツク、７はデジタル
出力、８はアナログスイツチ、９はデジタル出力
のＬＳＢ、１０は演算増幅器である。なお、図中
、同一符号は同一、または相当部分を示す。
FIG. 1 is a functional block diagram showing an AD converter according to an embodiment of this invention, FIG. 2 is a characteristic diagram explaining the conversion characteristics of the circuit shown in FIG. 1, and FIGS. A functional block diagram showing an embodiment of
FIG. 5 is a functional block diagram showing a conventional AD conversion device, FIG. 6 is a characteristic diagram showing conventional conversion characteristics, and FIG. 7 is a diagram explaining problems of the conventional device. In the figure, 1 is an AD converter, 2 is a reference voltage setting circuit, 3 is an upper end reference voltage, 4 is a lower end reference voltage,
5 is an analog input, 6 is a clock, 7 is a digital output, 8 is an analog switch, 9 is the LSB of the digital output, and 10 is an operational amplifier. In addition, in the figures, the same reference numerals indicate the same or equivalent parts.
Claims (1)
おいて、外部基準電圧入力を有するｎ＋１ビツト
のＡＤ変換器と、前記外部基準電圧入力への入力
電圧値を前記ＡＤ変換器の出力データのＬＳＢの
値によつて異なる２組の値に切替える基準電圧設
定回路とを備えたことを特徴とするＡＤ変換装置
。 In an n-bit AD (analog-to-digital) conversion system, an n+1-bit AD converter has an external reference voltage input, and the input voltage value to the external reference voltage input is determined by the LSB value of the output data of the AD converter. 1. An AD converter comprising: a reference voltage setting circuit that switches between two different sets of values when the voltage is applied.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11960590U JPH0475435U (en) | 1990-11-14 | 1990-11-14 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11960590U JPH0475435U (en) | 1990-11-14 | 1990-11-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0475435U true JPH0475435U (en) | 1992-07-01 |
Family
ID=31867551
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11960590U Pending JPH0475435U (en) | 1990-11-14 | 1990-11-14 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0475435U (en) |
-
1990
- 1990-11-14 JP JP11960590U patent/JPH0475435U/ja active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH0475435U (en) | ||
| JPH03101047U (en) | ||
| JPH0157825U (en) | ||
| JPH0290543U (en) | ||
| JPH01107226U (en) | ||
| JPS61107236U (en) | ||
| JPS637823U (en) | ||
| JPS60163839U (en) | Digital-analog conversion circuit | |
| JPH0410500U (en) | ||
| JPH02130131U (en) | ||
| JPS60155231U (en) | Analog-digital converter | |
| JPS59104631U (en) | Analog to digital converter | |
| JPS63111030U (en) | ||
| JPS6316727U (en) | ||
| JPH0286233U (en) | ||
| JPS59126342U (en) | integral circuit | |
| JPS62121845U (en) | ||
| JPS5999541U (en) | A/D conversion device | |
| JPS6392438U (en) | ||
| JPH028235U (en) | ||
| JPH0286234U (en) | ||
| JPH0210639U (en) | ||
| JPS6095606U (en) | Microcomputer input device for controlling in-vehicle electronic equipment | |
| JPS643224U (en) | ||
| JPS61114375U (en) |