![](/images/new-backgrounds/1179633/17963347x1.webp)
Car Audio Tuner IC with
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,
Functions
■
◆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
◆Improved weak and
◆Improved separation characteristics
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(analog and digital outputs)
Block Diagram
■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
a shifter pin is provided for VSM adjustment.
■Supports end product miniaturization
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◆Easily meets FCC requirements
■Package: QFP80 (14
14 mm)
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| 0.022∝F | AM |
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| (STEFEO) |
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| 33kΩ |
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| IF OUT | |
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| MUTE | ||
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| 0.01∝F | SEP |
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| OFF(RDS) |
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| 10kΩ |
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| ADJ |
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+ | + | 2200pF | + |
| 30kΩ | 0.22∝F |
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| 560Ω |
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2.2∝F | PILOT∝1F | 24kΩ | 100∝F | KEYEDΩ12k | QD | QD | MUTE∝0.47F FM | ∝F | 33kΩ 56kΩ | 82k | 10kΩ | 50k1000pF Ω | 1 | 62kΩ | MRC | 1∝F | AM/FM0.22 |
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IF | AM | C. | FM | F 0.1 ∝ |
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| 1 | DET |
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| 0.47∝F |
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| OUT |
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| To |
AGC | DET | LC | HCC | VCC | AGC | SD | VREF 10kΩ | IN |
| IN | DRIVE |
| OUT |
| NC | HCC | SNC | OUT |
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| PHASE | controller | |||||
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| 42 | 41 | 5.6kΩ | COMP |
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AM DET 61 |
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| 40 | 1∝F | 0.22∝F |
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33Ω |
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| WIDE AGC | ||||
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0.022∝F | 470Ω |
| 1MH |
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| FM MUTE |
| 100∝H |
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| 11kΩ |
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100∝H | FC18 |
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| + | RF AGC |
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| VSM |
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100∝H 0.022∝F |
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100kΩ | 47∝F | 15pF | 15pF | SHIFTER | 2nd MIX IN | ||
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51kΩ |
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| FM IF BYPASS | |
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| 510Ω | 0.022∝F | FM IF | 300Ω | |
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62 | ANT | OSC | OSC |
| Q.DET | MUTE |
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D | BUFF |
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| 90 | COMP. |
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| HOLE | MUTE | SNC | F.F.19k |
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| DRIVE |
| 90 | VCO |
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| VCO |
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| STOP |
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| DET | CI AMP |
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65 |
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| PILOT | TRIG | 36 | ||
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| DET. |
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66 |
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| IF LIMIT |
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| AMP. |
| F.F.30k | PILOT |
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| 0 | CAN. |
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| AM SM | FM SM |
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| DET | AM SD | FM SD |
| F.F. | UNTVERSAL |
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| COUNTER |
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GND
IF COUNT BUFF
SEEK/STOP Switch
CSB912TF108
MPX VCO
100kΩ
Pdot C
∝ADJ
0.01F
100kΩ | 5V |
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0.47∝F | 47kΩ |
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SEEKSW | 47kΩ | ||
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| 47kΩ |
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MRC SENOR AUTO ADJ
Electronic Volumeume andand ToneTone ControlControl ICIC forfor Car Audio Systemstems
LC75410E/W0E/W
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
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
■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
■Loudness control: The
Features
■
■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
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■All functions are controlled using serial data (CCB)
■Packages: LC75410E: QIP64E (14 14 mm)
| LC75410W: SQFP64 (10 | 10 mm) |
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| ❋ :CCB is SANYO's original bus format. |
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| All bus addresses are managed by |
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Block Diagram |
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| SANYO for this format. |
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| 4.7kΩ | 0.1∝F |
| [BASS fo | 100Hz] |
| [ M I D | fo | 1kHz] | [TREBLE fo | 10kHz] |
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| 220pF | 68kΩ |
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| 0.001∝F |
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| 10∝F | 10∝F |
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| 0.1∝F |
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| LSELO |
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| LTOUT | 10∝F |
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| LVRIN | LCT | LCOM |
| LTIN | LF1C1 | LF1C2 | LF1C3 0.01∝F | LF2C1 | LF2C2 | LF2C3 001∝F0. | LF3C1 | LF3C2 | LF3C3 |
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1∝F | L5P |
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1∝F + | L5M |
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| LFOUT |
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| LVref |
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1∝F | L4 |
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1∝F | L3 |
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1∝F | L2 |
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| TEST |
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+ | 53 |
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∝F |
0.022 |
1000pF |
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| 1st IF OUT |
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| AM MIX OUT | |
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| AM SD ADJ |
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| 100kΩ | WIDE AGC IN |
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| AM RF AGC OUT |
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| 150Ω | 62pF |
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| MUTE ATT ADJ |
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| 30Ω | 15Ω |
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+ | 100∝F |
| 8pF | AM 1st |
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| 1000pF | 18pF | 0.022∝F |
| 100kΩ |
| 5pF | |
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| FM |
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| DATA SHIFT REGISTER |
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70 | MIX |
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| LATCH |
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| MRC |
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| TWEET |
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| 12Bits |
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71 |
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| PROGRAMMABLE |
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| DIVIDER |
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72 | CF |
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| CCB | 29 |
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| SWALLOW |
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| REFERENCE |
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| DIVIDER |
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| REG | SWITCH |
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76 | MIX |
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| DEC | RIX |
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| DETECTOR |
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80 | OSC |
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| CHARGE | 21 | |
D |
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HCTR |
100pF |
DO
CL
DI
CE
X' OUT 24pF
10.25 MHz
X' IN24pF 51kΩ
XBUFF
PDS
PLL
VSS
Micro controller
1∝F |
| L1 |
| LVref |
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| 27 | DVSS |
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10∝F |
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| Multiplexer |
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| 26 | CL | CL |
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| CCB |
| DI |
| Micro |
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| 25 |
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VDD | 56 |
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| CONTROL | LOGIC CIRCUIT |
| INTERFACE |
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47∝F |
| Vref |
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+ | 57 | - |
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10∝F |
| RVref |
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| 23 | MUTE |
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58 |
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1∝F |
| R1 |
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| 47kΩ | 22 | RAVSS |
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1∝F | + | R2 |
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| NO SIGNAL | 21 | NC |
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1∝F |
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| 20 | TIM |
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1∝F |
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1∝F |
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CC | IN | |
AM ANT | ||
AM V |
FM BF GND
6pF | 1000pF |
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| 37pF | |
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| 30kΩ |
FM ANT IN
Ω |
| MIX IN |
100k | 220Ω | 1000pF |
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| 200kΩ |
0.1∝F |
| 100Ω |
| 0.022∝F |
1 |
| 2 | 3 | 4 | 5 | 6 |
| 7 | 8 | 9 |
| 10 | 11 | 12 | 13 | 14 | 15 | 16 |
| 17 | 18 | 19 | 20 | 10kΩ | ∝F |
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FM | FM RF | FE | FM |
| AM/FM |
| AM | NC | NC |
| AM | Gore |
| MPX |
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| SD | PLL IN |
| PD1 |
| 0.01 | 5V |
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ANTD | AGC |
| GND | OSC | 10pF 0.022∝F | SW | 0.022∝F | OSC | Sens | AGC | + | OSC | OUT |
| Pdot IN |
| 0.015∝F | 0.015∝F | 100pF |
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| 10kΩ | Ω100kSEEK | AM/FM SD | |||
| 3.3∝F |
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| 5pF |
| 30kΩ | 300pF | 0.01∝F 1MΩ | 150pF | 350Ω |
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| F 0.47 ∝ |
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| 10kΩ |
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| 6800pF | 0.01∝F |
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| 0.22∝F | +∝1F | 10kΩ |
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| 22kΩ |
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| 30pF |
| 51kΩ |
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| STOP | FM ST IND |
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| VCC=8V |
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| CF SW |
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| 0.022 |
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| MPX VCC | VT | GND |
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| PA |
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| 10∝F | |
1∝F | R5P | + |
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| RFIN | |
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| 17 |
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| 1 | RSELO | 2 |
| RVRIN | 3 |
| RCT | 4 | RCOM | 5 |
| RVROUT |
| 6 | RTIN | 7 |
| RF1C1 | 8 |
| RF1C2 | 9 | RF1C3 | 10 | RF2C1 | 11 | RF2C2 | 12 | RF2C3 | 13 | RF3C1 | 14 | RF3C2 | 15 | RF3C3 | 16 | RTOUT | + |
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| 10∝F |
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| 1∝F | + |
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| 10∝F | 0.1∝F |
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| 0.1∝F 0.01∝F |
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| .010 ∝F 0010. ∝F |
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| 220pF |
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| 68kΩ |
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| 4.7kΩ |
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| [BASS fo | 100Hz] | [ M I D | fo | 1kHz] | [TREBLE fo | 10kHz] |
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| 0.1∝F |
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| 43 Car Audio | 44 Car Audio |
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