JPS5533071A - Magnetism-sensitive semiconductor device and method of trimming the same - Google Patents
Magnetism-sensitive semiconductor device and method of trimming the sameInfo
- Publication number
- JPS5533071A JPS5533071A JP10615678A JP10615678A JPS5533071A JP S5533071 A JPS5533071 A JP S5533071A JP 10615678 A JP10615678 A JP 10615678A JP 10615678 A JP10615678 A JP 10615678A JP S5533071 A JPS5533071 A JP S5533071A
- Authority
- JP
- Japan
- Prior art keywords
- trimming
- magnetic field
- zero
- semiconductor device
- output
- 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
Abstract
PURPOSE: To provide a switching hall IC operating in low magnetic field by so trimming an emitter resistor that the output of a differential amplifier become zero in zero magnetic field.
CONSTITUTION: The output of a hall element H is amplified by differential transistor amplifiers Q1∼Q6. Resistors RT1∼RR3 are trimming resistor formed capably of connecting parallel with the emitter resistors RE1, RE2 of the transistors Q1, Q2, respectively to trim the correcting width in resolution of 2n steps so as to thus correct the offset voltage of Voff at maximum. When current is applied to pads P1∼P6 to short or select any of zener diodes A1∼Z5 to thereby prepare 8 resistances. According to this method, the zener diode is shorted or aluminum wire is cut in short time so that the output terminal voltage of the amplifier becomes zero in the zero magnetic field to conveniently control the offset of the amplifier and the semiconductor device.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10615678A JPS5533071A (en) | 1978-08-29 | 1978-08-29 | Magnetism-sensitive semiconductor device and method of trimming the same |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10615678A JPS5533071A (en) | 1978-08-29 | 1978-08-29 | Magnetism-sensitive semiconductor device and method of trimming the same |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5533071A true JPS5533071A (en) | 1980-03-08 |
Family
ID=14426437
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10615678A Pending JPS5533071A (en) | 1978-08-29 | 1978-08-29 | Magnetism-sensitive semiconductor device and method of trimming the same |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5533071A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0351714A (en) * | 1989-07-20 | 1991-03-06 | Hitachi Ltd | Sensor apparatus |
-
1978
- 1978-08-29 JP JP10615678A patent/JPS5533071A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0351714A (en) * | 1989-07-20 | 1991-03-06 | Hitachi Ltd | Sensor apparatus |
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