Published:2012/9/10 21:15:00 Author:Ecco | Keyword: Microphone preamplifier | From:SeekIC
A microphone preamplifier using: om CMOS op amp with its own battery, is small enough to be placed in a case of small microphone. The amplifier operates from a 1.5V battery cathode mercury low supply currents. This preamp will operate at very low power and maintain a reasonable frequency response as well. The TLC251 is operating in low bias (operating at 1.5 V) draws a supply current of only 10 and has a year - frequency response of 3 dB 27 Hz to 4.8 kHz. With 8-pin grounded, which is designated as the polarization state high limit increases above 25 kHz. Supply current is only - 30 pA under these conditions.
Reprinted Url Of This Article:
http://www.seekic.com/circuit_diagram/Audio_Circuit/Pre_Amplifier/Microphone_preamplifier_with_TLC251.html
Print this Page | Comments | Reading(3)
Code: