Segmented temperature compensation system
A segmented temperature and constant temperature technology, applied in the direction of control/regulation system, regulation of electrical variables, instruments, etc., can solve problems such as difficult to meet
Active Publication Date: 2015-07-22
CHENGDU ANALOG CIRCUIT TECH INC
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Problems solved by technology
[0002] The existing temperature compensation is generally the compensation of the whole temperature range, that is, the same compensation coefficient is used for temperature compensation in the whole temperature range. The compensation method of this method is simple and easy to implement, but it often cannot meet the requirements of some special circuits, such as oscillators. , for the temperature compensation of the oscillator, different compensation coefficients are usually required under different temperature segments to ensure that the output frequency has excellent temperature characteristics, and the existing technology is difficult to meet this requirement
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[0019] Embodiments of the present invention will now be described with reference to the drawings, in which like reference numerals represent like elements. As mentioned above, the present invention provides a segmented temperature compensation system. The present invention can perform segmental temperature compensation on the voltage, and adjust the compensation coefficient of each segment separately, so that the voltage of each segment has different temperature coefficients. So as to meet the needs of subsequent circuits.
[0020] Please refer to figure 1 , figure 1 It is a system block diagram of segmental temperature compensation of the present invention. As shown in the figure, it includes a constant temperature current source IC, a positive temperature current source IP, a voltage input terminal VIN, a voltage output terminal VOUT, a resistor R, and a P-type current mirror unit 1 and a P-type current mirror unit 2 , P-type current mirror unit 3 , P-type current mirror ...
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The invention discloses a segmented temperature compensation system which comprises a constant-temperature current source, a thermotropic current source, a voltage input end, a voltage output end, a resistance, a plurality of P-shaped electricity mirror image units and a plurality of N-shaped electricity mirror image units, wherein the constant-temperature current source provides electric current irrelevant to temperature, the thermotropic current source provides electric current in linear direct ratio to temperature, the voltage input end receives the voltage needing temperature compensation, the voltage output end outputs the voltage after segmented temperature compensation, the resistance transforms compensating current to compensating voltage, and has addition and subtraction operation with the voltage input from the voltage input end, the P-shaped electricity mirror image units and the N-shaped electricity mirror image units perform proportional mirror image on the current and output the current after mirroring. The segmented temperature compensation system can perform segmented temperature compensation on the voltage, and separately adjusts the compensation factors of all segments, so that the voltages of different segments have different temperature factors, and the demands of a follow-up circuit are met.
Description
technical field [0001] The invention relates to the field of a segmented temperature compensation system, and more particularly relates to a system for performing segmented temperature compensation. Background technique [0002] The existing temperature compensation is generally the compensation of the whole temperature range, that is, the same compensation coefficient is used for temperature compensation in the whole temperature range. The compensation method of this method is simple and easy to implement, but it often cannot meet the requirements of some special circuits, such as oscillators. , for the temperature compensation of the oscillator, different compensation coefficients are usually required under different temperature segments to ensure that the output frequency has excellent temperature characteristics, and the existing technology is difficult to meet this requirement. [0003] Therefore, it is necessary to provide a method capable of performing temperature com...
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IPC IPC(8): G05F1/567
Inventor 不公告发明人
Owner CHENGDU ANALOG CIRCUIT TECH INC