Download Print this page

Sanyo EP93F Brochure page 24

Car audio, automotive lan data communication equipment

Advertisement

Car Audio Tuner IC with Built-in PLL Circuit
Car Audio Tuner IC with Built-in PLL Circuit
LA17000M
LA17000M
Overview
The LA17000M is a car audio system tuner IC that integrates both a PLL frequency synthesizer and all AM/FM
functions on a single chip. The LA17000M combines the functions of two ICs, a PLL IC (such as the LC72144)
and an FM tuner IC (such as the LA1781M) on a single chip that provides PLL, AM (upconversion), FM FE, FM IF,
NC, MCP, and MRC functions. The LA17000M achieves increased performance, adjustment-free manufacturing,
and high reliability at low cost in car tuner systems by providing an optimal functional allocation in the IC.
Functions
Built-in PLL
A/D converter (6 bits, 1 channel)
IF counter and I/O ports for simplified interface
design
Supports AM double conversion reception
Strengthened noise reduction
Superlative three-signal characteristics
Improved weak and medium-field NC
characteristics
Improved separation characteristics
Built-in anti-birdie filter (analog and digital outputs)
Anti-multipath sensor outputs
(analog and digital outputs)
Block Diagram
+
+
+
24k
IF
PILOT
AM
C.
KEYED
V CC
AGC
DET
LC
HCC
AGC
60
59
58
57
56
55
AM DET
61
AM ANTD
0.022 F
33
WIDE AGC
ANT
OSC
62
OSC
D
BUFF
FM MUTE
ON ADJ
63
100 H
11k
FC18
RF AGC
100 H
+
64
VSM
+
3.3 F
SHIFTER
2nd MIX IN
65
51k
FM IF BYPASS
66
510
0.022 F
FM IF
300
IN
67
BUFF
IF
68
DET
AGC
L.C.
69
1st IF OUT
70
MIX
AM MIX OUT
RF AGC
TWEET
AM SD ADJ
71
WB AGC
WIDE AGC IN
100k
1st IF IN
72
CF
SW
AM/FM
AM RF AGC OUT
V REF
73
62pF
W.B AGC
74
RF AGC
Keyed
N-AGC IN
AGC
MUTE ATT ADJ
75
REG
15
30
76
MIX OUT
MIX
BUFF
FE V CC
77
BUFF
1st IF
Narrow IN
78
AM
+
AM 1st
1ST
MIX IN
OSC
79
AGC
1000pF
0.022 F
1000pF
5pF
ANT
OSC
80
D
FM
MIX IN
6pF
1
2
3
4
5
6
37pF
FM
FM RF
FE
FM
AM/FM
AM
200k
ANTD
AGC
GND
OSC
SW
OSC
30k
+
100
30k
V CC =8V
43 Car Audio
Support for lower costs
AM double conversion (upconversion)
Improved FM IF circuit (automatic wide/narrow
ceramic filter switching under adjacent channel
interference conditions)
IF gain sample-to-sample variations reduced to 1/3
that in previous devices. This simplifies end product
adjustment during manufacture. Furthermore,
a shifter pin is provided for VSM adjustment.
Supports end product miniaturization
High-frequency signal lines can be handled within
the tuner pack.
Easily meets FCC requirements
Package: QFP80 (14
14 mm)
0.022 F
33k
SEP
10k
+
ADJ
+
+
+
0.47 F
+
+
QD
OUT
+
FM
QD
AFC
MUTE
FM
DET
50k
MRC
AM/FM
V REF
SD
10k
IN
IN
DRIVE
S-METER
OUT
NC
HCC
SNC
OUT
S-METER
PHASE
54
53
52
51
50
49
48
47
46
45
44
43
42
41
COMP
+
+
40
MUTE
Q.DET
GND
39
AMP.
F.F.19k
PHASE
HCC
90
IF COUNT BUFF
COMP.
SEEK/STOP Switch
SNC
38
HOLE
MUTE
F.F.19k
DET
DRIVE
90
VCO
CSB912TF108
37
VCO
OC-C
AFC
MPX VCO
STOP
DET
CI AMP
PILOT
36
TRIG
DET.
Pdot C
35
ADJ
IF LIMIT
0.01 F
AMP.
PILOT
100k
5V
F.F.30k
CAN.
34
0
0.47 F
AM SM
FM SM
47k
SEEKSW
AM SD
FM SD
F.F.
UNTVERSAL
33
COUNTER
HCTR
32
IF BUFFER
DATA SHIFT REGISTER
100pF
LATCH
51k
I/O-1
31
MRC
12Bits
DO
30
PROGRAMMABLE
DIVIDER
CL
29
CCB
SWALLOW
I/F
COUNTER
DI
28
1/16,1/17 4Bits
HPH
LPF
REFERENCE
CE
27
DIVIDER
X' OUT
F.E
FM/AM
24pF
26
SWITCH
+
10.25
MHz
25
X' IN
24pF
POWER
51k
MAIN
24
ON
HC
SUB
MAT
I/O-2
RESET
DEC
RIX
XBUFF
23
PDS
PHASE
22
TRIG
GATE
DETECTOR
PLL
CHARGE
V SS
21
PUMP
7
8
9
10
11
12
13
14
15
16
17
18
19
20
NC
NC
AM
Gore
MPX
SD
PLL IN
PD1
Sens
AGC
+
OSC
OUT
Pdot IN
ST-IND
10k
+
10k
6800pF
0.01 F
0.22 F
22k
30pF
51k
NC MPX
GND
CF SW
L-CH
R-CH
PLL V DD =5V
FMIF AMNC
FM/AM
FMIF AM
MPX V CC
VT
GND
Overview
The LC75410E/W is an electronic volume and tone control IC that implements a rich set of audio control
functions with a minimal number of external components. Functions include volume, balance, fader,
bass/midrange/treble, and loudness controls, as well as input selection/switching functions and an input
gain control.
Functions
Volume control: A total of 161 positions from 0 dB to -79.5 dB in 0.5 dB steps and - dB.
A balance function can be implemented by controlling the left and right channel volume controls separately.
Fader control: The rear or front outputs can be attenuated by one of 16 levels
(A total of 16 settings with attenuations of 0 to -2 dB in 1dB steps, -2 to -20 dB in 2 dB steps, -20 to -30 dB in 10 dB steps,
and -45, -60, and - dB settings.)
Bass/midrange/treble controls: Each band can be controlled in 1 dB steps from 0 dB to 6 dB, and in 2 dB steps from
8 dB to 12 dB
Input gain control: The input signal can be amplified by 0 to +18.75 dB in 1.25 dB steps
Input switching: One of five input systems (left and right channels) can be selected
(Four of the input systems are single-ended inputs, one uses differential inputs.)
Loudness control: The -32 dB position of the 2 dB step volume control ladder resistor can be tapped and a loudness
function implemented with external capacitor and resistor components
Features
On-chip buffer amplifiers reduce the number of external components
Internal switches are implemented in a silicon gate CMOS process that minimizes the noise generated when switching.
This results in low noise even when switching in the no-signal state.
Zero-cross switching circuits used for low noise even when input signals are present
Built-in VDD/2 reference voltage generation circuit
All functions are controlled using serial data (CCB)
Packages: LC75410E: QIP64E (14
AM
Block Diagram
(STEFEO)
IF OUT
MUTE
OFF(RDS)
To
micro
controller
1 F
+
1 F
+
1 F
+
MRC
SENOR
1 F
AUTO ADJ
+
1 F
+
I/O-1
1 F
+
10 F
+
VDD
47 F
+
10 F
+
1 F
+
1 F
+
1 F
+
1 F
+
1 F
+
5V
1 F
+
SEEK
AM/FM SD
STOP
FM ST IND
SDSTSW
Electronic Volume and Tone Control IC for
Electronic Volume and Tone Control IC for
Car Audio Systems
Car Audio Systems
LC75410E/W
LC75410E/W
14 mm)
LC75410W: SQFP64 (10
10 mm)
:CCB is SANYO's original bus format.
All bus addresses are managed by
SANYO for this format.
4.7k
0.1 F
[BASS fo 100Hz]
[ M I D fo 1kHz]
220pF
10 F
10 F
+
+
1 F
+
48
47
46
45
44
43
42
41
40
39
38
37
L5P
49
- +
L5M
50
L4
- +
- +
51
+
+
-
L3
LVref
+
+
-
52
-
L2
53
L1
54
LVref
ZERO-CROSS DET
Multiplexer
55
+
-
56
CONTROL
LOGIC CIRCUIT
Vref
+
CIRCUIT
-
57
RVref
Multiplexer
ZERO-CROSS DET
58
R1
59
R2
60
R3
- +
- +
61
RVref
R4
- +
+
+
+
62
-
-
R5M
63
+
R5P
-
64
1
2
3
4
5
6
7
8
9
10
11
12
+
+
1 F
+
10 F
10 F
220pF
68k
4.7k
0.1 F
[BASS fo 100Hz]
[ M I D fo 1kHz]
[TREBLE fo 10kHz]
+
10 F
36
35
34
33
LFIN
32
10 F
LFOUT
+
-
31
PA
+
LROUT
+
- +
30
PA
-
+
10 F
LAVSS
29
TEST
28
DVSS
27
CL
26
CL
DI
CCB
Micro
25
DI
INTERFACE
controller
CE
24
CE
MUTE
23
RAVSS
47k
22
NO SIGNAL
21
NC
TIMER
TIM
20
0.033 F
RROUT
+
- +
+
19
PA
-
10 F
RFOUT
+
- +
18
PA
10 F
RFIN
17
13
14
15
16
10 F
+
[TREBLE fo 10kHz]
44 Car Audio

Advertisement

loading