JPS61113473U - - Google Patents
Info
- Publication number
- JPS61113473U JPS61113473U JP19441485U JP19441485U JPS61113473U JP S61113473 U JPS61113473 U JP S61113473U JP 19441485 U JP19441485 U JP 19441485U JP 19441485 U JP19441485 U JP 19441485U JP S61113473 U JPS61113473 U JP S61113473U
- Authority
- JP
- Japan
- Prior art keywords
- pass filter
- series connection
- transistor
- output terminal
- resistor
- 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
- 239000003990 capacitor Substances 0.000 claims description 6
- 230000003321 amplification Effects 0.000 claims description 4
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 2
- 239000004065 semiconductor Substances 0.000 claims 1
- 239000000758 substrate Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
Description
第１図は本考案の信号増幅回路の構成を示すブ
ロツク図、第２図および第４図は本考案の信号増
幅回路中の選択回路網の具体的な回路構成を示す
回路図、第３図は第２図で示す選択回路網の利得
の周波数特性を示す図、第５図〜第７図は増幅器
と検出器の構成を用いるテレビジヨン受像機にお
いて、クロマ回路、ビデオ回路ならびに同期回路
への出力を発生する信号増幅回路部の構成を示す
ブロツク図である。
１……テレビジヨンチユーナ、２，１１……選
択回路網、３……前置増幅回路部、４……最終段
増幅回路部、５……ビデオ検波回路部、６……ビ
デオ増幅回路部、７……ＩＣ化部分、８，９，１
０，１２，１３……ＩＣ外部端子、１４……結合
コンデンサ、１５，２４，２５……フイルタ用コ
ンデンサ、１６，２３……フイルタ用抵抗、１７
，２６……エミツタフオロワトランジスタ、１８
，２７……エミツタ抵抗、１９，２０……ベース
バイアス供給用抵抗、２２……結合抵抗。
FIG. 1 is a block diagram showing the configuration of the signal amplification circuit of the present invention, FIGS. 2 and 4 are circuit diagrams showing the specific circuit configuration of the selection circuit network in the signal amplification circuit of the present invention, and FIG. is a diagram showing the frequency characteristics of the gain of the selection circuit shown in Fig. 2, and Figs. 5 to 7 are diagrams showing the frequency characteristics of the gain of the selection circuit network shown in Fig. 2, and Figs. FIG. 2 is a block diagram showing the configuration of a signal amplification circuit section that generates an output. 1... Television channel unit, 2, 11... Selection circuit network, 3... Preamplifier circuit section, 4... Final stage amplifier circuit section, 5... Video detection circuit section, 6... Video amplifier circuit section , 7...IC part, 8, 9, 1
0,12,13...IC external terminal, 14...Coupling capacitor, 15,24,25...Filter capacitor, 16,23...Filter resistor, 17
, 26... emitter follower transistor, 18
, 27... Emitter resistance, 19, 20... Base bias supply resistance, 22... Coupling resistance.
Claims (1)
に応動して出力端子に高レベル信号を発生する高
利得帯域増幅回路部の前記出力端子と、ビデオ検
波回路部の入力端子との間に、結合コンデンサお
よび高域フイルタ用コンデンサとの直列接続体、
同直列接続体を介して前記出力端子に発生する信
号がベースに結合されるとともに、電源電圧を分
割する抵抗分割手段により直流ベースバイアスが
印加され、コレクタが電源端子に接続され、エミ
ツタが抵抗を介して接地されるトランジスタおよ
び前記結合コンデンサと高域フイルタ用コンデン
サとの直列接続点に一端が、他端が前記トランジ
スタのエミツタに接続される高域フイルタ用抵抗
とからなる選択回路網を配置して前記両回路部間
を帯域結合するとともに、これらの全回路部分を
単一の半導体基板内へ一体に集積化したことを特
徴とする信号増幅回路。 A coupling capacitor is connected between the output terminal of the high gain band amplifier circuit section that generates a high level signal at the output terminal in response to the low level intermediate frequency signal applied to the input terminal and the input terminal of the video detection circuit section. and series connection with a high-pass filter capacitor,
A signal generated at the output terminal is coupled to the base via the same series connection, and a DC base bias is applied by a resistor dividing means that divides the power supply voltage, the collector is connected to the power supply terminal, and the emitter is connected to the resistor. A selection network consisting of a transistor grounded through the transistor and a high-pass filter resistor whose one end is connected to the emitter of the transistor and whose other end is connected to the series connection point between the coupling capacitor and the high-pass filter capacitor is arranged. 1. A signal amplification circuit characterized in that said two circuit parts are band-coupled by means of said circuit parts, and all these circuit parts are integrated into a single semiconductor substrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19441485U JPS61113473U (en) | 1985-12-18 | 1985-12-18 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19441485U JPS61113473U (en) | 1985-12-18 | 1985-12-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61113473U true JPS61113473U (en) | 1986-07-17 |
Family
ID=30751866
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19441485U Pending JPS61113473U (en) | 1985-12-18 | 1985-12-18 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61113473U (en) |
-
1985
- 1985-12-18 JP JP19441485U patent/JPS61113473U/ja active Pending
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