JPS5473547A - Integrating a/d conversion current circuit - Google Patents
Integrating a/d conversion current circuitInfo
- Publication number
- JPS5473547A JPS5473547A JP14001577A JP14001577A JPS5473547A JP S5473547 A JPS5473547 A JP S5473547A JP 14001577 A JP14001577 A JP 14001577A JP 14001577 A JP14001577 A JP 14001577A JP S5473547 A JPS5473547 A JP S5473547A
- Authority
- JP
- Japan
- Prior art keywords
- transistor
- integrating
- current circuit
- conversion current
- collector current
- 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
- Analogue/Digital Conversion (AREA)
Abstract
PURPOSE: To obtain the steady operation of the circuit even under the low voltage by securing a constant set value to the temperature change for the 1st and 2nd resistance elements plus the collector current of the transistor.
CONSTITUTION: The following units are provided: 1st resistance element R1 installed between the voltage terminals (+V, -V); the serial circuit of transistor Q1 connected to the diode; transistor Q2 which is driven by the diode forward voltage; and 2nd resistance element R2 which features nearly the same temperature coefficient with element R1 and is connected to the emitter of Q2. And the value of 1st and 2nd resistance elements R1 and R2 are set so that the collector current of the transistor may be constant to the temperature change.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14001577A JPS5473547A (en) | 1977-11-24 | 1977-11-24 | Integrating a/d conversion current circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14001577A JPS5473547A (en) | 1977-11-24 | 1977-11-24 | Integrating a/d conversion current circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5473547A true JPS5473547A (en) | 1979-06-12 |
Family
ID=15258941
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14001577A Pending JPS5473547A (en) | 1977-11-24 | 1977-11-24 | Integrating a/d conversion current circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5473547A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57206127A (en) * | 1981-06-15 | 1982-12-17 | Fujitsu Ltd | Integral analog-to-digital converting circuit |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4825459A (en) * | 1971-08-02 | 1973-04-03 | ||
JPS5126447A (en) * | 1974-08-23 | 1976-03-04 | Tektronix Inc |
-
1977
- 1977-11-24 JP JP14001577A patent/JPS5473547A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4825459A (en) * | 1971-08-02 | 1973-04-03 | ||
JPS5126447A (en) * | 1974-08-23 | 1976-03-04 | Tektronix Inc |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57206127A (en) * | 1981-06-15 | 1982-12-17 | Fujitsu Ltd | Integral analog-to-digital converting circuit |
JPS6326928B2 (en) * | 1981-06-15 | 1988-06-01 | Fujitsu Kk |
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