Title:
【発明の名称】温度に依存しないリニア対エクスポーネンシャル変換器
Document Type and Number:
Japanese Patent JP3253616
Kind Code:
B2
Abstract:
A linear-to-exponential converter circuit for generating a temperature-independent signal which is exponentially related to an input signal. An amplifier stage forming an exponential multiplier is comprised of a bipolar junction transistor which, characteristic of bipolar junction transistors, generates a current at a collector electrode which is dependent upon temperature. A signal to be amplified by the expontential multiplier formed of the bipolar junction transistor is first provided to a temperature compensation circuit. The temperature compensation circuit introduces a temperature dependency upon the input signal which is the inverse to that of the temperature dependency of the bipolar junction transistor of the amplification circuit. The temperature dependency of the amplified signal is removed, and a temperature-invariant signal is produced thereby.
Inventors:
Feld Daniel Shee
Application Number:
JP50085593A
Publication Date:
February 04, 2002
Filing Date:
May 08, 1992
Export Citation:
Assignee:
Motorola Incorporated
International Classes:
G06G7/24; (IPC1-7): G06G7/24
Domestic Patent References:
| JP53142148A |
Attorney, Agent or Firm:
Yoshiaki Ikeuchi