JPH0390534U - - Google Patents
Info
- Publication number
- JPH0390534U JPH0390534U JP15089089U JP15089089U JPH0390534U JP H0390534 U JPH0390534 U JP H0390534U JP 15089089 U JP15089089 U JP 15089089U JP 15089089 U JP15089089 U JP 15089089U JP H0390534 U JPH0390534 U JP H0390534U
- Authority
- JP
- Japan
- Prior art keywords
- analog
- circuit
- variable gain
- digital
- gain
- 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 6
- 230000003321 amplification Effects 0.000 claims description 3
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Analogue/Digital Conversion (AREA)
Description
第１図は本考案によるアナログ／デジタル変換
装置の第１実施例を示すブロツク図、第２図は本
考案の第２実施例の示すブロツク図である。
１３……可変利得増幅回路、１４……アナログ
／デジタル変換回路、１６……基準レベル検出回
路、１７……誤差レベル検出回路、１８……デジ
タル／アナログ変換回路、１９……引込み時用増
幅回路、２０……引込み外れ時用増幅回路、２１
……スイツチ回路、２２……積分回路。
FIG. 1 is a block diagram showing a first embodiment of an analog/digital converter according to the present invention, and FIG. 2 is a block diagram showing a second embodiment of the present invention. 13...Variable gain amplifier circuit, 14...Analog/digital conversion circuit, 16...Reference level detection circuit, 17...Error level detection circuit, 18...Digital/analog conversion circuit, 19...Amplification circuit for pull-in , 20...Amplification circuit for disconnection of retraction, 21
...Switch circuit, 22...Integrator circuit.
Claims (1)
増幅回路が設けられていると共に、上記アナログ
／デジタル変換回路によつて変換されて得られた
デジタル信号が有する誤差に応じて、上記可変利
得増幅回路の利得を制御するフイードバツク系を
有するアナログ／デジタル変換装置において、 フイードバツクループが引込み状態にあるか否
かを判別する状態判別手段と、 この判別結果に応じて、引込み外れ状態では引
込み状態よりフイードバツクループのゲインを大
きくするループゲイン可変手段とを備えたことを
特徴とするアナログ／デジタル変換装置。[Claims for Utility Model Registration] A variable gain amplification circuit is provided before the analog/digital conversion circuit, and a variable gain amplifier circuit is provided in front of the analog/digital conversion circuit, and a variable gain amplifier circuit is provided according to the error of the digital signal obtained by conversion by the analog/digital conversion circuit. , in the analog/digital converter having a feedback system for controlling the gain of the variable gain amplifier circuit, a state determining means for determining whether or not the feedback loop is in the retracted state; An analog/digital converter comprising: loop gain variable means for increasing the gain of the feedback loop in a disconnected state than in a retracted state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15089089U JPH0390534U (en) | 1989-12-29 | 1989-12-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15089089U JPH0390534U (en) | 1989-12-29 | 1989-12-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0390534U true JPH0390534U (en) | 1991-09-13 |
Family
ID=31697222
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15089089U Pending JPH0390534U (en) | 1989-12-29 | 1989-12-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0390534U (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6075112A (en) * | 1983-09-30 | 1985-04-27 | Sony Corp | Agc circuit |
| JPS61267404A (en) * | 1985-05-21 | 1986-11-27 | Mitsubishi Electric Corp | Optical receiver |
| JPS6330078B2 (en) * | 1984-02-21 | 1988-06-16 | Mitsukawa Kogyo Kk |
-
1989
- 1989-12-29 JP JP15089089U patent/JPH0390534U/ja active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6075112A (en) * | 1983-09-30 | 1985-04-27 | Sony Corp | Agc circuit |
| JPS6330078B2 (en) * | 1984-02-21 | 1988-06-16 | Mitsukawa Kogyo Kk | |
| JPS61267404A (en) * | 1985-05-21 | 1986-11-27 | Mitsubishi Electric Corp | Optical receiver |