BU9253AS Rohm Semiconductor, BU9253AS Datasheet - Page 7

• Manufacturer Part Number: BU9253AS
• Description: IC KARAOKE ECHO SGL CHIP SDIP18
• Manufacturer: Rohm Semiconductor
• Type: Echo ICr

Specifications of BU9253AS

• Applications: Karaoke
• Mounting Type: Through Hole
• Package / Case: 18-DIP (0.300", 7.62mm)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

・Description of terminal
・BU9253AS Block diagram, Application circuit
●Pin description, Block diagram, Application circuit
BU9253AS
Pin No.
＜BU9253AS/FS＞
10
12
13
14
15
16
17
18
11
1
2
3
4
5
6
7
8
9
BU9253FS
Pin No.
10
12
13
14
15
16
－
11
－
1
2
3
4
5
6
7
8
9
V
CC
R2
39k
C1
100p
DALPF OUT
ADLPF OUT
DAINT OUT
ADINT OUT
ECHO VR
DALPF IN
ADLPF IN
DAINT IN
MIX OUT
ADINT IN
18
OSC
1
Symbol
MIX IN
R8
2.2k
MUTE
GND
BIAS
VCC
NC1
NC2
CR
C2
22u
+
COUNTOR
VR1
10k
17
2
MUTE
V
R3
22k
CC
V
C C
GND pin
Echo level DC control
pin
Not connected
Analog unit DC bypath
pin
DA side integrator input
pin
DA side integrator
output pin
DA side LPF input pin
DA side LPF output pin
Mixing output of original
sound and echo sound
Original sound input pin
of mixing amplifier
AD side LPF input pin
AD side LPF output pin
AD side integrator
output pin
AD side integrator input
pin
VCC pin
Not connected
Mute control pin
Oscillator CR pin
16
3
Function
+
15
4
Fig.27 Application circuit
+
V
22u
100u
0.1u
C C
14
5
7/16
C6
0.01u
C3
0.01u
SRAM
A/D
D/A
D/A side LPF operation amplifier
13
6
・BU9253AS pin assignment
R9
10k 0.47u
A/D side LPF operation amplifier
・BU9253FS pin assignment
D/A 側 LPF 用オペアンプ
C7
0.01u
G N D
C R
18
GND
1
CR
16
1
12
7
A/D 側 LPF 用オペアンプ
R10
4.7k
+
E C H O V R
-
C8
3300p
C5
0.012u
C4
4700p
M U T E
ECHO VR
R11
15k
R4
10k
17
MUTE
2
Fig.25 BU9253AS pin assignment
Fig.26 BU9253FS pin assignment
15
2
+
-
11
8
N C
N C
16
3
R6
8.2k
VCC
BIAS
14
3
R5
20k
V C C
B IA S
DAINT IN DAINT OUT DALPF IN DALPF OUT
ADINT IN ADINT OUT ADLPF OUT ADLPF IN
15
4
10
9
MIX
13
4
R7
20k
A D IN T IN
D A IN T IN
14
5
12
5
A D IN T O U T
D A IN T O U T
13
6
11
A D L P F O U T
6
D A L P F IN
+
+
2.2u
2.2u
12
7
OUT
D A L P F O U T
10
7
IN
A D L P F IN
11
8
MIX IN
MIX OUT
M IX O U T
9
8
M IX IN
10
9