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LV25200MLV25200M
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+
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++
+
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+
0.01
µ
F
1
µ
F
0.47
µ
F
0.015
µ
F
18pF
220pF
18pF
0.022
µ
F
0.039
µ
F
0.22
µ
F
R103
100
C2
C4
C6 C7
8V
V
CC
SVC203
C103
12P
18P
1P
6P
C106
2200P
C105
2200P
C107
2200P
C104
C101
C102
L102
L103
L104
R102
2.2k
R101
330
ANT D
GND
IN2
OSC-GND
FM OSC
CPAM
TEST
sep adj.
GND
CE
DI
CL
DO
3V
AM-MIX
RF AGC
2p
3p
1000p
4700p
VCD_OSC
L_OSC
30K
R12
C8
C9A
R11
C11B
C12B
C12
C15
C10A
SD Stereo IND.
TEST
100K
R13
2.4K
6.8K
100K
R20
00 00
0
0
0
0
30
p11 up
p11 up
CE
CS DI CL
DO
TUNER
DO
EEPROM
EEPROM
V
CC
2
5V
X' TAL V
CC
X TAL OUT
L-OUT
R-OUT
SNC
X TAL IN
X' TAL GND
V
CC
5V
Lch
OUT
Rch
OUT
AM-NC
Gate-OUT
RDS-OUT
C22
20.5M
C23
C25
0.015
µ
F
0.22
µ
F
0.47
µ
F
0.47
µ
F
2200p
0.22
µ
F
0.47
µ
F
1U
1U
10U
0.1
µ
F
0.022
µ
F
0.22
µ
F
0.022
µ
F
0.022
µ
F
0.022
µ
F
10
µ
F
0.47U
0.22U
1U
C26
C27
C29
C30
C34
C35
C36
R38
V
DD
HCC
R28
R29
R31
82K
15K
3K
1U
1U
GND
Triger OUT
AM NC
AM/FM
PLL-IN
MPX
CHCC
SENC
AGC
NOISE
VSM
MRC-OUT
VSM-2
NOISE
10K
R37
C37
C38
C39
1M
1000p
R40
R41
C40
C41
C42
C43
C46
C47
C51
C57
4.7U
C50
C44
C48
C49
1000p
68K
MRC IN
DRIVE
MUTE
AFC IN
VREF
DET OUT
NC-IN
INDEX
MOD
Det-out
Undesire
ROS-OUT
PLL TEST
PLL TEST
AMCL
IF AGC
AM-W-AGC
BYPASS
RF-AGC
IF-IN
AM
PILOT-DET
V
CC
R43
R47
10K 3300p
8200p
0.02U
C50B
10K
10K10K
R55
R56R57
C
C56
C59
C61
C62
C58
C69
C67
0.022
µ
F
0.022
µ
F
0.022
µ
F
0.022
µ
F
0.022
µ
F
0.025
µ
F
0.047
µ
F
0.47
µ
F
0.075
µ
F
L101
0.22
µ
F
C71
C74
C78
C73
C35
47U
C75
C77
C79
C80
1000P
1000P
C105
30P
3.3U
3.3U
450K
1U
AM
IF-IN2
FM-IF-IN2
FM-IF-IN
AM RF-AGC
AM-MI 2
AM-MI 2
AM-MI 2-IN
BYPASS
RF-DAC
IF-IN
BIAS
FM1stIF-IN
TEST
AM-ANT-D
N-AGC
MIX-OUT
MIX-OUT
FE-VCC
FM-MIX-IN
IN
FM-MIX
IN
FM-MIX
1ST-IF-OUT
OUT
Vref
4.9V
10.7MS3
10.7MS3
32K
R70
R77
30
0
470
100K
R73
Lodins coil
1SV234
FM cut
R66
75
R58
620
FET
CPH5905
ANT D RF AGC
IQ MIX
MIX
AM
1/10.1/8div
1/6.1/4
div
IN1/IN2
OSC BUFFER
FM
OSC
3K
CP1
swallow
counter
orogramable
divider
ohase
detector
reference
counter
Vref 3V
SD Stereo
Vo1.
OSC
bus
MATRIX
SNC
HCC
Sub
decorder
P-CAN
38K<0
19K<0
19K<90
FF
BUFF
TRIG
P-DET
Phase
MPX
VCC
GateTrig
AGC
anp
+
+
-
-
+
-
+
-
+
-
LPF
HPF
select
8bit AD
IN3-3
IN3-4
IN3-1
IN3-2
ANT d
DAC
Keyed AGC
N AGC
W AGC
reg4.9V
N AGC
RF AGC
W AGC
MIX
AM IF AMP
NC in
Gtime
det
IF AGC
AM low cut
MIX
s-meter
Mute
delay
Time
N amc
AFC
QD
rey2.7V
Mute
AMP
BPF
Ccont
GND
DO
TEST
DI
NC
SK
V
DD
CS
C109
37 Car Audio 38 Car Audio
LA2655VLA2655V
4.7
µ
F
1 2 3 4 5 6 7 8 9 10
20 19 18 17 16 15 14 13 12 11
+ +
+
+
+
+
CONT1 GND VREF R-IN RC1 RC2 RC3RV1 RV2 R-OUT
C C
1
µ
F
1
µ
F
2200pF
82000pF
2200pF
C
C5
R
R2
C
4.7
µ
F
1
µ
F
1
µ
F
N.C AGND L-IN LC1 LC2 LC3LV1LV2 L-OUTV
CC
4.7
µ
F
2200pF
2200pF
82000pF
C
C7
C10
C11
RC
C
L/H
Rch-IN
Rch-OUT
Lch-OUTLch-IN
V
CC
B
SW
A
A
B
(R-ch)
(L-ch)
SW
C12
R4
C13
Pin_D
Pin_D
L_MI 2
L_AM3
L_AM4
Pin_D
CF10.7
CF10.7
L_MIX
500K
R8
Bus Control Tuner ICBus Control Tuner IC
Clear Surround Control IC Includes Plus Sound AlgorithmClear Surround Control IC Includes Plus Sound Algorithm
: CCB is SANYO's original bus format.
All bus addresses are managed by SANYO for this format.
The LV25200M integrates an optimal reception system for varying reception conditions plus AM NC functions
that support reception worldwide. It also reduces the number of external components required.
■ FM front end
■ Multiplex
■ PLL
■ FM IF
■ AM upconversion
■ Autoalignment
■ Noise canceller
■ FM/AM switch
■ MRC
FM
■ Image rejection mixer adopted
■ Built-in IF band filter
■ Supports reception in all areas worldwide
■ Crystal oscillator: 20.5 MHz
PLL
■ Supports high-speed locking
■ Serial bus control circuit (SANYO CCB bus)
AM
■ Increased mixer dynamic range, improved
noise filter
■ Increased IF amplifier dynamic range, improved
noise filter
■ Built-in noise canceller
MC, MPX, and MRC
■ Built-in MPX VCO (Obviates the need for a
ceramic oscillator)
■ Package: QFP80 (14 14 mm)
Features
Functions
Functions
Overview Overview
The LA2655V is a sound field recreation IC that is optimal for audio equipment and that includes the Plus Sound
algorithm.
The LA2655V is optimal for use in radio/cassette players, personal computers, TV sets, and other consumer
audio products including mini-compo systems.
The Plus Sound algorithm corrects for both delays and attenuations of the high and low frequency signals due to
the characteristics of the speakers and creates audio with extreme clarity.
■ Plus Sound algorithm
■ Clear Surround signal processing
■ Variable clear level effect (using external components)
■ Package: SSOP20 (225 mil)
Block Diagram
Block Diagram
Conditional
Product
Conditional
Product
: Use of conditional products requires
consultation with a SANYO representative
prior to the use of the device.
❋
: Use of conditional products requires
consultation with a SANYO representative
prior to the use of the device.
❋
:This product is subject to change without notice for improvement. When considering the use of this
product, first refer to the latest SANYO "Semiconductor News" publication related to this device and
finally refer to the latest specifications for the device.
❋
❋
Brightness control
Brightness control
On/off control
Under
development
Under
development