JPS6412606A - Protection circuit for integrated circuit - Google Patents
Protection circuit for integrated circuitInfo
- Publication number
- JPS6412606A JPS6412606A JP62168013A JP16801387A JPS6412606A JP S6412606 A JPS6412606 A JP S6412606A JP 62168013 A JP62168013 A JP 62168013A JP 16801387 A JP16801387 A JP 16801387A JP S6412606 A JPS6412606 A JP S6412606A
- Authority
- JP
- Japan
- Prior art keywords
- protection
- node
- given
- connection terminal
- external connection
- 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.)
- Granted
Links
Landscapes
- Amplifiers (AREA)
- Semiconductor Integrated Circuits (AREA)
Abstract
PURPOSE:To prevent the gain of a main amplifier from being affected by a resistance of a protection resistor by providing 1st and 2nd protection resistors for current attenuation connected in parallel with an external connection terminal and 1st and 2nd protection diodes connected respectively to the protection resistors. CONSTITUTION:A protection circuit 140 is a circuit protecting an integrated circuit 01 from an external surge voltage impressed to an external connection terminal 104 and consists of the 1st and 2nd protection resistors 141, 142 and diodes 143-146. The 1st protection resistor 141 is connected between the external connection terminal 104 and a node N11 and the 2nd protection resistor 142 is connected between the external connection terminal 104 and a node N12 respectively. The 1st protection diodes 143, 144 are connected between the 1st protection diode 141 and the node N11 while being branched and a power supply voltage Vdd is given to the diode 143 and a ground potential Vss is given to the diode 144. Moreover, the 2nd protection diodes 145, 146 are connected between the 2nd protection resistor 142 and the node N12 while being branched and a power supply voltage Vdd is given to them respectively similarly. Thus, a desired gain is obtained while the protection resistor does not given any adverse effect onto the main amplifier.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62168013A JPH0795658B2 (en) | 1987-07-06 | 1987-07-06 | Integrated circuit protection circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62168013A JPH0795658B2 (en) | 1987-07-06 | 1987-07-06 | Integrated circuit protection circuit |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6412606A true JPS6412606A (en) | 1989-01-17 |
JPH0795658B2 JPH0795658B2 (en) | 1995-10-11 |
Family
ID=15860187
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62168013A Expired - Lifetime JPH0795658B2 (en) | 1987-07-06 | 1987-07-06 | Integrated circuit protection circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0795658B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0454091A2 (en) * | 1990-04-26 | 1991-10-30 | Fujitsu Limited | Input/output protection circuit and semiconductor device having the same |
-
1987
- 1987-07-06 JP JP62168013A patent/JPH0795658B2/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0454091A2 (en) * | 1990-04-26 | 1991-10-30 | Fujitsu Limited | Input/output protection circuit and semiconductor device having the same |
Also Published As
Publication number | Publication date |
---|---|
JPH0795658B2 (en) | 1995-10-11 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS6269306A (en) | Temperature compensation cmos voltage reference circuit | |
JPS57206113A (en) | Amplifier for limiter | |
CA2002311A1 (en) | Overvoltage protection circuits | |
IE810878L (en) | Integrated circuit for generating a reference voltage | |
JPS6412606A (en) | Protection circuit for integrated circuit | |
JPS5652420A (en) | Constant-current circuit | |
JPS577151A (en) | Monolithic ic circuit | |
JPS5483746A (en) | Amplifier circuit | |
GB2102248A (en) | Improvements in or relating to transistor bridge rectifier circuits for telephone purposes | |
JPS57147278A (en) | Protecting device for mis integrated circuit | |
JPS54138317A (en) | Communication path network switch | |
JPS6444673A (en) | Discharge circuit to dc input line | |
EP0457737B1 (en) | MOS/BIP protection circuit | |
JPS5493949A (en) | Amplifier | |
JPS57146325A (en) | Constant current circuit | |
JPS56144609A (en) | Protective device for multiple-power-source power amplifying circuit | |
JPS5599832A (en) | Electronic circuit | |
JPS54141555A (en) | Electric circuit | |
JPS564814A (en) | Voltage dividing circuit | |
JPS6450713A (en) | Overvoltage input protective circuit for power supply | |
GB1279128A (en) | Improvements in or relating to line repeater amplifiers having transistorised electrical power supply circuits | |
JPS5717207A (en) | Amplifying circuit | |
JPH04199569A (en) | Input protective circuit for cmos device | |
JPS567117A (en) | Constant electric current circuit | |
JPS5661627A (en) | Temperature-to-voltage converter circuit using copper resistor |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
EXPY | Cancellation because of completion of term | ||
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20071011 Year of fee payment: 12 |