JPS6457499A - Sample hold circuit - Google Patents
Sample hold circuitInfo
- Publication number
- JPS6457499A JPS6457499A JP62212821A JP21282187A JPS6457499A JP S6457499 A JPS6457499 A JP S6457499A JP 62212821 A JP62212821 A JP 62212821A JP 21282187 A JP21282187 A JP 21282187A JP S6457499 A JPS6457499 A JP S6457499A
- Authority
- JP
- Japan
- Prior art keywords
- resistance
- transistor
- input
- hold circuit
- high speed
- 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
Abstract
PURPOSE:To obtain a high speed sample hold circuit suitable for a bipolar monolithic IC by disposing a means for switching a diode or a diode connected transistor to a reversely biassing mode. CONSTITUTION:In place of a constant current source, a resistance R1 is used and a circuit for continuously making a current passing through the transistor Q2 connected through the diode to the input transistor Q1 equal to an input signal level is added. The current for generating a voltage drop corresponding to an input voltage flows to the resistance R1 connected as a load, a voltage between the base and the emitter of the transistors Q1, Q2 is substantially constant even when a collector current is changed, and the voltage drop of the resistance R1 follows an input to sample the input signal. In such a way, since the load is the resistance, it is not an obstruction for a high speed like a pnp transistor but the high speed sample hold circuit is obtained.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62212821A JP2585285B2 (en) | 1987-08-28 | 1987-08-28 | Sample hold circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62212821A JP2585285B2 (en) | 1987-08-28 | 1987-08-28 | Sample hold circuit |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8201530A Division JP2724134B2 (en) | 1996-07-31 | 1996-07-31 | Sample and hold circuit |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6457499A true JPS6457499A (en) | 1989-03-03 |
JP2585285B2 JP2585285B2 (en) | 1997-02-26 |
Family
ID=16628913
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62212821A Expired - Fee Related JP2585285B2 (en) | 1987-08-28 | 1987-08-28 | Sample hold circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2585285B2 (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6095796A (en) * | 1983-10-28 | 1985-05-29 | Hitachi Ltd | Sample and hold circuit |
-
1987
- 1987-08-28 JP JP62212821A patent/JP2585285B2/en not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6095796A (en) * | 1983-10-28 | 1985-05-29 | Hitachi Ltd | Sample and hold circuit |
Also Published As
Publication number | Publication date |
---|---|
JP2585285B2 (en) | 1997-02-26 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
LAPS | Cancellation because of no payment of annual fees |