BU9255FS-E2 Rohm Semiconductor, BU9255FS-E2 Datasheet - Page 6

• Manufacturer Part Number: BU9255FS-E2
• Description: IC KARAOKE ECHO SGL CHIP SSOPA16
• Manufacturer: Rohm Semiconductor
• Type: Echo ICr

Specifications of BU9255FS-E2

• Applications: Karaoke
• Mounting Type: Surface Mount
• Package / Case: 16-SSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

(3) Setting the echo loop gain
With V
time (when the phases, including that of the DLY cir-
cuit, are in alignment):
Thus, maximum allowable input is the value of V
provided the specifications (1 = A). Assuming a feed-
back ratio (A) of 0.7 and a maximum V
V
•
6
Multimedia ICs
IN
V
External dimensions (Units: mm)
BU9253FS / BU9255FS
IN
must be less than 1.2 V
V
O
OMax
Echo loop ATT V
Max. = (1 + A + A2 + ···) V
being the maximum amplitude of V
0.8
R: R = 1: 1
16
1
6.6
mix
IN
0.2
~ V
SSOP-A16
9
8
DLY
0.36 0.1
···A =
R
P-P
.
V
V
LPF
DLY
IN
R
0.3Min.
+
IN
(A < 1)
Recommendable gain
=
K = 0
∞
OUT
of 4.0 V
AD
A
– 6dB
O
K
0.15
at this
· V
With Pin NO. BU9253FS
OMax
IN
P-P
=
,
1-A
SRAM
1
OdB
Fig. 3
V
IN
BU9253AS / BU9253FS / BU9255FS
BU9253AS
DA
VR
2
V
IN
18
1
1.778
19.4
9
SDIP18
Recommendable gain
0.3
10
9
0.5
0.1
+ 3dB
+
7
0 ~ 15
VDLY
7.62
8
V
OUT
O