JPS59195822U - automatic gain control circuit - Google Patents
automatic gain control circuitInfo
- Publication number
- JPS59195822U JPS59195822U JP9173183U JP9173183U JPS59195822U JP S59195822 U JPS59195822 U JP S59195822U JP 9173183 U JP9173183 U JP 9173183U JP 9173183 U JP9173183 U JP 9173183U JP S59195822 U JPS59195822 U JP S59195822U
- Authority
- JP
- Japan
- Prior art keywords
- gain control
- control circuit
- amplifier
- output signal
- variable 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
Landscapes
- Control Of Amplification And Gain Control (AREA)
- Feedback Control In General (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は、従来例の概念的構成図、第２図は、第１図の
回路の動作説明図、第３図は、来者案実、施例の概念的
構成図、第４図および第５図は、第３図の回路の動作説
明図である。
ＶＧＡ１〜３・・・可変ゲイン増幅器、ＡＤＥＴ・・・
レベル検出回路、Ａ・・・誤差増幅器。FIG. 1 is a conceptual block diagram of a conventional example, FIG. 2 is an explanatory diagram of the operation of the circuit in FIG. FIG. 5 is an explanatory diagram of the operation of the circuit of FIG. 3. VGA1~3...Variable gain amplifier, ADET...
Level detection circuit, A...error amplifier.
Claims (1)
のレベルを検出するレベル検出回路と、このレベル検出
回路の出力信号と基準信号との誤差に基づく出力信号を
前記可変ゲイン増幅器にゲイン制御信号として与える誤
差増幅器とを有する自動利得制御回路であって、可変ゲ
イン増幅器は、誤差増幅器の出力信号の変化範囲におけ
るそれぞれ独自の設定点より下の領域では一定のゲイン
を有し、設定点より上の領域ではそれぞれ独自の傾斜で
直線的に増加するゲインを有する複数の可変ゲイン増幅
器の直列回路からなることを特徴とする自動利得制御回
路。a variable gain amplifier; a level detection circuit that detects the level of an output signal of the variable gain amplifier; and an output signal based on an error between the output signal of the level detection circuit and a reference signal, which is applied to the variable gain amplifier as a gain control signal. an automatic gain control circuit having an error amplifier, the variable gain amplifier having a constant gain in a range of variation of the output signal of the error amplifier below each unique set point and in a range above the set point; An automatic gain control circuit characterized in that it consists of a series circuit of a plurality of variable gain amplifiers, each having a linearly increasing gain with its own slope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9173183U JPS59195822U (en) | 1983-06-15 | 1983-06-15 | automatic gain control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9173183U JPS59195822U (en) | 1983-06-15 | 1983-06-15 | automatic gain control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59195822U true JPS59195822U (en) | 1984-12-26 |
Family
ID=30221795
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9173183U Pending JPS59195822U (en) | 1983-06-15 | 1983-06-15 | automatic gain control circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59195822U (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4924561A (en) * | 1972-06-28 | 1974-03-05 | ||
| JPS5057526A (en) * | 1973-09-20 | 1975-05-20 | ||
| JPS54140858A (en) * | 1978-04-24 | 1979-11-01 | Hitachi Ltd | Delay agc circuit |
-
1983
- 1983-06-15 JP JP9173183U patent/JPS59195822U/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4924561A (en) * | 1972-06-28 | 1974-03-05 | ||
| JPS5057526A (en) * | 1973-09-20 | 1975-05-20 | ||
| JPS54140858A (en) * | 1978-04-24 | 1979-11-01 | Hitachi Ltd | Delay agc circuit |
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