STK301-220 查看數據表（PDF） - SANYO -> Panasonic
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STK301-220 Datasheet PDF : 8 Pages
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STK301-220
Pin Descriptions
Pin No.
1
2, 21
3
4
5
6
7
8
9
10
Pin name
+VCC1
DC
OUTPUT 1
NF 1
1IN 1
INPUT 1
1IN 2
VSS
VEE
CLK
Functions
Power supply pin used for + power supply to IC2 and IC3 graphic equalizer.
Pin for 1/2 VCC1 decoupling capacitor of graphic equalizer IC. When shortened, power supply becomes more effective and
ripples are vulnerable.
Output pin 1.
Inverting input for the graphic equalizer IC2 internal operational amplifier.
Audio signal input 1 (INPUT1) for electronic volume control IC1
Input impedance for input pin 1 rated at approximately 60 kΩ (1 kHz, flat).
Audio signal input 2 (INPUT1) for electronic volume control IC1
Power supply pin connected to ground (GND).
Power supply pin used for audio signal power supply to electronic volume control section. When single power supply is used,
connect to VSS.
Input pin for data from CPU according to Schmitt inverter format.
11
DI
Input pin for clock from the CPU according to Schmitt inverter format.
12
+VCC2
Power supply pin rated at +5 V (typ). Make sure that VCC2 does not onset before VDD.
13
GND (–VCC1) Power supply pin for ground (- power supply) of IC2 and IC3 graphic equalizer.
14
VDD
Power supply pin used for audio signal power supply to electronic volume control section.
15
S
Select pin for applications using two ICs. Input “1” to initiate key code 7C3 for
connecting to VDD. Input “0” to initiate key code 7C2 for connecting to VEE.
16
2IN 2
Audio signal input 2 (INPUT2) for electronic volume control IC1
17
INPUT 2 Input impedance for input pin 2 rated at approximately 60 kΩ (1 kHz, flat).
18
2IN 1
Audio signal input 1 (INPUT2) for electronic volume control IC1
19
NF 2
Inverting input for the graphic equalizer IC3 internal operational amplifier.
20
OUTPUT 2 Output pin 2.
Note: Refer to LC7522 or LC7523 specifications concerning pins which do not appear here and are hybrid IC (HIC) pins connected directly to a LC7522 or
LC7523 pins.
Description of Operation
The STK301-220 is a hybrid IC (HIC) with a 7-component 2-channel construction for electronically controlled graphic
equalizer applications. It employs an LC7522 for graphic equalizer electronic volume control and an M5229 for 7-
component graphic equalizer functions.
Figure 1 Equivalent Circuit Block Diagram
No. 4793-4/8
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