BU9253AS Rohm Semiconductor, BU9253AS Datasheet - Page 10
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BU9253AS
Manufacturer Part Number
BU9253AS
Description
IC KARAOKE ECHO SGL CHIP SDIP18
Manufacturer
Rohm Semiconductor
Type
Echo ICr
Datasheet
1.BU9253AS.pdf
(17 pages)
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
BU9253AS
Manufacturer:
ROHM/罗姆
Quantity:
20 000
・Delay time control circuit
・Delay signal volume circuit
・Feedback volume circuit
・Input mixer・selector circuit
This circuit controls delay time. -8 delay time can be selected by register.
This is the delay signal volume circuit. 8 volume setting can be selected by register.
This is the feedback volume circuit. 8 feedback volume setting can be selected by register.
This mixes MIC IN, LCIN, RCIN, VOIN signals, and selects the output path by selector.
D11
D0
D8
H
H
H
H
H
H
H
H
H
H
H
H
L
L
L
L
L
L
L
L
L
L
L
L
D12
D1
D9
H
H
H
H
H
H
H
H
H
H
H
H
L
L
L
L
L
L
L
L
L
L
L
L
LCIN
RCIN
MRCIN
VOIN
D10
D13
D2
H
H
H
H
H
H
H
H
H
H
H
H
L
L
L
L
L
L
L
L
L
L
L
L
+
FBVOL
ISEL
Fig.31 Input mixer selector circuit
Delay time (Sampling frequency)
-
144.0msec (2MHz / 18)
192.0msec (2MHz / 24)
15.4msec (2MHz / 6)
21.1msec (2MHz / 6)
30.0msec (2MHz / 6)
48.0msec (2MHz / 6)
96.0msec (2MHz / 12)
9.2msec (2MHz / 6)
+
+
OSEL
DLYVOL
DLY
VOL
FBVOL
#1
-13dB
-15dB
-∞dB
-11dB
-∞dB
-12dB
-15dB
+3dB
-3dB
-6dB
-9dB
-3dB
-5dB
-7dB
-9dB
10/16
0dB
Delay
ディレイ
ADC
DAC
+
+
DOSW
-
+
OSEL
OSEL
#2
#3
LPF cutoff frequency
RCOUT
LCOUT
DSIG
7kHz
3kHz