Overview

The STK301-220 is a hybrid IC (HIC) for electronically

controlled graphic equalizer applications and is equipped

with on-chip electronic volume control for 7-band, 2-

channel graphic equalization, thereby permitting one-

touch up-down control of all band gains. The STK301-

220 is a hybrid IC which combines SC system and

photoresist techniques with folded board construction

while incorporating Sanyo’s unique insulated metal

substrate technology (IMST) to the base.

Applications

• Car stereos

• Portable radio-cassette players

• Home stereos

Features

• All bands are set for L/R simultaneous 2 dB incremental

operation (typ).

• All bands are equipped with 13 positions and range

between +12 dB maximum boost to –12 dB maximum cut.

• Crossover frequencies include fo; 60 Hz, 150 Hz,

400 Hz, 1 kHz, 2.5 kHz, 6 kHz and 15 kHz.

• The following features can be made available with an

electronic graphic equalizer system which incorporates

the 3-IC construction consisting of the STK301-220, a

controller (universal microcontroller) along with the

display LSI (LC75821

→LCD, LC7565→FLT, LED):

— One-touch up-down control of all band gains.

— Immediate recall of preferred frequency levels tailored

to suit musical selections. This is possible using preset

functions to retrieving items from one-touch memory.

— Such functions as setting all bands to 0 dB (flat

function), or switching frequency characteristics

from 0 dB to center (reverse function) may be

simply performed with supported software.

— Dual control lines permit mutual use with display

LSI and help to simplify wiring between

microcontroller and LSI.

• Minimal operating shock noise when boost or cut is used.

Package Dimensions

unit : mm

4143

Thick-Film Hybrid IC

N3096HA (OT)/82294TH (OT) 5-3398 No. 4793-1/8

[STK301-220]

SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters

TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN

7-band, 2-channel Electronic Graphic Equalizer

STK301-220

Ordering number : EN4793A

Specifications

Parameter

Symbol

Conditions

Ratings

Unit

16

V

Maximum supply voltage

±18 (36)

V

7V

Input voltage

CLK, DI, IN1, IN2

V

CLK, DI, IN1, IN2

V

Allowable power dissipation

Pd max

920

mW

Operating temperature

Topr

–20 to +70

°C

Storage temperature

Tstg

–40 to +100

°C