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R2S15900SP Schematic ( PDF Datasheet ) - Renesas Technology

Teilenummer R2S15900SP
Beschreibung 2ch Electronic Volume with Surround
Hersteller Renesas Technology
Logo Renesas Technology Logo 




Gesamt 9 Seiten
R2S15900SP Datasheet, Funktion
R2S15900SP
2ch Electronic Volume with Surround
REJ03F0126-0130
Rev.1.3
May 30, 2005
Description
The R2S15900SP is an optimum audio signal processor IC for TV. It has a 5ch input selector, surround/pseudo stereo,
tone control(2band), output gain control and 2ch master volume. It can control all of these functions with I2C bus.
Features
Function
Volume
Input selector
Rec output
Tone control
Surround/ Pseudo stereo
Mode selector
Output gain control
MCU interface
Features
0 to –84dB, –/ 1dB step
Each channel is independence control.
5 input selector + MUTE
2 Rec output
Bass: –15dB to +15dB/ 1dB step
Treble: –15dB to +15dB/ 1dB step
Surround <Low/ High>
Pseudo Stereo
Bypass/ Tone / Tone & Pseudo Stereo or Surround
0dB/ +4.5dB
I2C-BUS control.
Recommended Operating Condition
Supply voltage: VCC = 9.0V(typ)
Application
TV, Mini Stereo, etc.
System Configuration
REC L1 REC L2
(IN L4) (IN L5)
VCC=9V
IN L1
IN L2
IN L3
IN R1
IN R2
IN R3
Volume L
Volume R
REC R1 REC R2
(IN R4) (IN R5)
Tone Control
(Bass / Treble)
Pseudo Stereo
and
Surround
I 2 C -BUS I/F
Mode Selector
LOUT
Output Gain
Control
Mode Selector
ROUT
Output Gain
Control
SCL SDA
Rev.1.3 May 30, 2005 page 1 of 8






R2S15900SP Datasheet, Funktion
R2S15900SP
Function Description
1. Tone Control Circuit
<1> Bass Circuit
Boost
IN
R3
+
-
R2
OUT
C1 C2
R1
Cut IN +
-
OUT
R2 R3
<2> Treble Circuit
IN
Boost
R1
C1 C2
R1
+
- OUT
R2
C
IN +
Cut -
OUT
R2 R1
C
1
fo
=
2
π
R1(R2+R3 C1C2
( Hz)
Q ~= 1
C1C2R2
C1+C2 R1
(R3=0)
Gv = 20 log
R2+R3 +2
R1
R3
+2
R1
(dB) (C1=C2)
1
fo
=
2
π
(Hz)
R1(R2+R3 C1C2
Q
~=
1
C1+C2
C1C2R2
R1
Gv = 20 log
R3
R1
+2
R2+R3
R1 +2
(R3=0)
(C1=C2)
(dB)
Gv = 20 log R1+R2 (dB)
R1
R1
Gv = 20 log R1+R2 (dB)
Rev.1.3 May 30, 2005 page 6 of 8

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