JPH0358027U - - Google Patents
Info
- Publication number
- JPH0358027U JPH0358027U JP11907889U JP11907889U JPH0358027U JP H0358027 U JPH0358027 U JP H0358027U JP 11907889 U JP11907889 U JP 11907889U JP 11907889 U JP11907889 U JP 11907889U JP H0358027 U JPH0358027 U JP H0358027U
- Authority
- JP
- Japan
- Prior art keywords
- input signal
- attenuation amount
- circuit
- control signal
- resistance value
- 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
- 238000010586 diagram Methods 0.000 description 2
Description
第１図は本考案の一実施例の回路図、第２図は
従来の一例の回路図である。
１……入力端子、２，５……マルチプレクサ、
３……オペアンプ、４……出力端子、６，７……
制御信号入力端子。
FIG. 1 is a circuit diagram of an embodiment of the present invention, and FIG. 2 is a circuit diagram of a conventional example. 1...Input terminal, 2, 5...Multiplexer,
3...Operational amplifier, 4...Output terminal, 6,7...
Control signal input terminal.
Claims (1)
応じて入力信号を減衰させるアツテネータ回路に
おいて、 前記制御信号に応じて抵抗値が切換わる抵抗切
換回路と、 前記抵抗切換回路の抵抗値に応じて利得が変化
する増幅回路とを具備し、前記入力信号を前記増
幅回路を通過させることにより前記利得に応じて
決まる減衰量で減衰させる構成としてなるアツテ
ネータ回路。[Claims for Utility Model Registration] An attenuator circuit that switches an attenuation amount according to a control signal and attenuates an input signal according to the attenuation amount, comprising: a resistance switching circuit whose resistance value is switched according to the control signal; An attenuator circuit comprising an amplifier circuit whose gain changes according to the resistance value of a resistance switching circuit, and configured to attenuate the input signal by an attenuation amount determined according to the gain by passing the input signal through the amplifier circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11907889U JPH0358027U (en) | 1989-10-11 | 1989-10-11 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11907889U JPH0358027U (en) | 1989-10-11 | 1989-10-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0358027U true JPH0358027U (en) | 1991-06-05 |
Family
ID=31667219
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11907889U Pending JPH0358027U (en) | 1989-10-11 | 1989-10-11 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0358027U (en) |
-
1989
- 1989-10-11 JP JP11907889U patent/JPH0358027U/ja active Pending
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