KA22234 5 band dual graphic eq amp introduction 24-szip-275 the KA22234 is a monolithic integrated circuit devel- oped for the stereo 5 band graphic equalizer amplifier. it is consisting of an operational amplifier, four resonant circuits with an active filter, and it is suitable for radio cassette, car stereo or music center. features tone control with independent adjustment of each band through external capacitor gain control through external variable resistor (gain = 11db) excellent cross talk characteristic (ct = 70db typ, at r g = 0) wide operating supply voltage range: v cc = 3.5v ~14v ordering information block diagram fig. 1 device package operating temperature KA22234 24-szlp-275 -20 c ~+ 70 c
KA22234 5 band dual graphic eq amp absolute maximum ratings characteristic symbol value unit supply voltage power dissipation operating temperature storage temperature v cc p d t opr t stg 15 500 -20 ~ + 70 -40 ~ + 125 v mw c c electrical characteristics (ta = 25 c, v cc = 8v, r l = 20k w , flat mode, unless otherwise specified) test f(hz) conditions quiescent circuit current i ccq v i = 0 4.0 7.0 10.0 ma output voltage v o 1k thd = 1% 500 600 mv total harmonic distortion thd 1k 0.1 0.3 % channel balance cb 1k -1.0 0 1.0 db cross talk ct 1k 50 70 db output noise voltage v no flat, rg = 2.2k w bw(-3db) = 10hz ~ 30khz 10 20 m v flat g v (flat) 1k v i = 100mv -2.0 -1.5 1.0 db 100 300 boost g v (boost) 1k v i = 100mv 9.0 11.0 14.0 db 3k voltage gain 10k 100 300 cut g v (cut) 1k v i = 100mv -14.0 -11.0 -9.0 db 3k 10k characteristic symbol typ unit min max
KA22234 5 band dual graphic eq amp test circuit fig. 2
KA22234 5 band dual graphic eq amp
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