TW200739089A - Peak voltage detector having PMOS current source - Google Patents

Peak voltage detector having PMOS current source

Info

Publication number
TW200739089A
TW200739089A TW095111702A TW95111702A TW200739089A TW 200739089 A TW200739089 A TW 200739089A TW 095111702 A TW095111702 A TW 095111702A TW 95111702 A TW95111702 A TW 95111702A TW 200739089 A TW200739089 A TW 200739089A
Authority
TW
Taiwan
Prior art keywords
peak voltage
pmos
voltage detector
current
current source
Prior art date
Application number
TW095111702A
Other languages
Chinese (zh)
Other versions
TWI301894B (en
Inventor
Ming-Chuen Shiau
Chun-Ming Huang
Jia-Jheng Wang
Ci-Yi Wu
jian-wei Zeng
Original Assignee
Hsiuping Inst Technology
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hsiuping Inst Technology filed Critical Hsiuping Inst Technology
Priority to TW95111702A priority Critical patent/TWI301894B/en
Publication of TW200739089A publication Critical patent/TW200739089A/en
Application granted granted Critical
Publication of TWI301894B publication Critical patent/TWI301894B/en

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  • Measurement Of Current Or Voltage (AREA)
  • Amplifiers (AREA)

Abstract

A peak voltage detector having lower current consumption includes a differential amplifier (1), a current mirror (2) and a capacitor (C). Among them, the differential amplifier serves as a comparator, receiving both the input signal V(IN) and the output feedback signal V(OUT), and the current mirror supplies the capacitor with needed charge current. The different amplifier consists of the first PMOS transistor (MP1), the second PMOS transistor (MP2), the first NMOS transistor (MN1), the second NMOS transistor (MN2) and the PMOS current source (IP). Within which, the NMOS transistors MN1 and MN2 work as drivers while the PMOS transistors MP1 and MP2 act as the load transistors, and the PMOS current source IP configured as a diode-form provides a reference current to the differential amplifier. The peak voltage detector can both accurately measure the peak voltage of input signal and efficiently lessen the power dissipation.
TW95111702A 2006-04-03 2006-04-03 Peak voltage detector having pmos current source TWI301894B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
TW95111702A TWI301894B (en) 2006-04-03 2006-04-03 Peak voltage detector having pmos current source

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TW95111702A TWI301894B (en) 2006-04-03 2006-04-03 Peak voltage detector having pmos current source

Publications (2)

Publication Number Publication Date
TW200739089A true TW200739089A (en) 2007-10-16
TWI301894B TWI301894B (en) 2008-10-11

Family

ID=45070353

Family Applications (1)

Application Number Title Priority Date Filing Date
TW95111702A TWI301894B (en) 2006-04-03 2006-04-03 Peak voltage detector having pmos current source

Country Status (1)

Country Link
TW (1) TWI301894B (en)

Also Published As

Publication number Publication date
TWI301894B (en) 2008-10-11

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Legal Events

Date Code Title Description
MM4A Annulment or lapse of patent due to non-payment of fees