STK301-090 View Datasheet(PDF) - SANYO -> Panasonic
Part Name
Description
Manufacturer
STK301-090 Datasheet PDF : 9 Pages
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STK301-090
Pin Functions
Number
1
2, 21
3
4
5
6
7
8
9
10
Name
+VCC1
DC
OUTPUT1
NF1
1IN1
INPUT1
1IN2
VSS
VEE
CLK
Function
Graphic equalizer IC2 and IC3 positive supply pin
Graphic equalizer IC1 1/2 VCC1 decoupling capacitor. A small capacitor value can introduce supply effects and cause ripple.
Output 1
Graphic equalizer IC2 built-in op-amp inverting input
Electronic volume control IC1 audio signal input 1 (for INPUT1)
Input 1. Approximately 60kΩ input impedance (1kHz, flat frequency response)
Electronic volume control IC1 audio signal input 2 (for INPUT1)
Ground
Electronic volume control audio signal circuit supply. Connect to VSS if using a single-sided supply.
Clock input pin from the CPU. Schmitt inverter input.
11
DI
Data input pin from the CPU. Schmitt inverter input.
A01554
12
+VCC2
+5V supply pin. VDD supply should be applied before the VCC2 supply.
13
GND (−VCC1) Graphic equalizer IC2 and IC3 ground (or negative supply)
14
VDD
Electronic volume control audio signal circuit supply
15
S
A01555
IC select pin when using 2 ICs.
When HIGH, initiates keycode 7C3 to select connection to VDD.
When LOW, initiates keycode 7C2 to select connection to VEE.
16
2IN2
Electronic volume control IC1 audio signal input 2 (for INPUT2)
17
INPUT2
Input 2. Approximately 60kΩ input impedance (1kHz, flat frequency response)
18
2IN1
Electronic volume control IC1 audio signal input 1 (for INPUT2)
19
NF2
Graphic equalizer IC3 built-in op-amp inverting input
20
OUTPUT2 Output 2
Note. Refer to LC7522 and LC7523 data sheets for pin function information concerning pins connected internally in the hybrid IC.
Operating Description
The STK301-090 comprises an LC7522 graphic equalizer electronic volume control IC and an LA3607 7-band graphic
equalizer IC to form a 7-band, 2-channel electronic graphic equalizer hybrid IC.
Figure 1. Equivalent Circuit Block Diagram
No. 4589—5/9
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