Ordering number : EN*8320 LV25300M Bi-CMOS IC 1-chip Tuner IC Overview The LV25300M integrates all six blocks (FM FE, FM IF, double conversion AM, AM-NC, and PLL diversity) required in car radio tuner on a single ship. Features The LV25300M is a tuner system that supports the SDRS300 (SANYO car audio DSP) that allows the creation of standard tuner modules. Various setting changes can be performed with the software of the control microcontroller according to the intended application. Small tuner modules can be developed with a smaller number of parts compared to conventional tuners and at a lower total cost. Moreover, the LV25300M comes with an antenna switching diversity function that switches two antennas in response to various electric field changes while the vehicle is running, a malfunction prevention circuit that operates through antenna switching frequency detection, and a weak electric field detection, and antenna fixing circuit that uses S meter voltage, making stable reception possible. Functions FM F.E. • Balanced input type double balanced mixer (FM mixer 1) • Dedicated RF tuner DAC (8 bits × 2) • Pin diode drive AGC output (antenna damping) • MOSFET second gate drive AGC output • Keyed AGC adjustment pin (3D-AGC) • Differential IF amplifier (first IF amplifier) • Wide band AGC sensitivity setting pin, and narrow band AGC sensitivity setting pin • Local oscillator circuit (oscillator 1) • AM/FM second mixing oscillator (oscillator 2) • FM second mixing (FM mixer 2) Continued on next page. Any and all SANYO Semiconductor Co.,Ltd. products described or contained herein are, with regard to "standard application", intended for the use as general electronics equipment (home appliances, AV equipment, communication device, office equipment, industrial equipment etc.). The products mentioned herein shall not be intended for use for any "special application" (medical equipment whose purpose is to sustain life, aerospace instrument, nuclear control device, burning appliances, transportation machine, traffic signal system, safety equipment etc.) that shall require extremely high level of reliability and can directly threaten human lives in case of failure or malfunction of the product or may cause harm to human bodies, nor shall they grant any guarantee thereof. If you should intend to use our products for applications outside the standard applications of our customer who is considering such use and/or outside the scope of our intended standard applications, please consult with us prior to the intended use. If there is no consultation or inquiry before the intended use, our customer shall be solely responsible for the use. Specifications of any and all SANYO Semiconductor Co.,Ltd. products described or contained herein stipulate the performance, characteristics, and functions of the described products in the independent state, and are not guarantees of the performance, characteristics, and functions of the described products as mounted in the customer' s products or equipment. To verify symptoms and states that cannot be evaluated in an independent device, the customer should always evaluate and test devices mounted in the customer' s products or equipment. 41107 TI IM No.8320-1/4 LV25300M Continued from preceding page. • Supports both FM Japan band and US band. • AM first oscillator coil for AM LW, MW, and SW frequency divider circuit, internal frequency divider with reduced number of varactor diode • Weather band FM IF • IF limiter amplifier (IFAMP: Also runs in AM mode.) • S-meter output (shared pin for AM), 6-stage pickup (VSM: for DSP) • Dedicated FM S-meter (for DSP and diversity circuit) • Coilless detector circuit • Digital detection buffer output • IF counter buffer output (also used for AM) • SD (IF counter buffer ON level) adjustment • SD output (active high) (also used for AM) AM • Double balance mixer (first and second) • Elimimated IF amplification (AM 450kHz) AM IFT • Digital detection IF buffer output (also used for FM) • IF AGC (controlled by narrow band S-meter output) • RF AGC (Wide) • Pin diode drive pin (antenna damping) • Wide band S-meter output (shared pin for FM IF) • Narrow band S-meter output (detected by AM IF second amplifier) • IF counter buffer output function (shared pin for FM IF), directly connected to PLL counter • SD (IF counter buffer ON Level) adjustment • SD output (active high) (also used for FM) • AM noise canceller trigger output pin PLL • Charge pump for high-speed locking • Internal FET for active LPF • Low radiation noise due to 3V operation • 4-wire serial bus control circuit (SANYO’s original CCB bus format) • Reference divider • Programmable divider (pulse swallow type) • Crystal oscillator circuit - FM band selection signal detection and control circuits - AM, SW1, and SW2 reception - Weather band - AM/FM RF AGC voltage - FM/AM RF DAC (9 bits × 2) • ADC (6/8bits × 2, selectable) Bus control circuit Switching control • AM/FM reception switching • AM/FM RF AGC sensitivity setting: 4 bits • FM keyed AGC control: 4 bits • AM/FM RF tuning DAC (9 bits × 2) • AM/FM SD control ON/OFF • AM/FM IF counter output control ON/OFF • AM oscillator 1 divider setting • SEEK/receive mode switching Automatic adjustment • FM ANT tuning circuit fc control • FM RF tuning circuit fc control • AM/FM IF gain adjustment • FM/AM W-AGC sensitivity adjustment • FM/AM N-AGC sensitivity adjustment • FM S-meter shift • AM/FM SD sensitivity setting • NULL adjustment • AFC band width Continued on next page. No.8320-2/4 LV25300M Continued from preceding page. Connection to CDSP300 (interface) Diversity • AM/FM IF output (450kHz) • AM/FM S-meter output, AC/DC 2 systems • AM-NC gate trigger output • Noise amplifier, noise, and AGC circuits • Noise density coefficient circuit • Antenna selection output • Generating a signal for the antenna switching frequency and positioning antenna • Weak electric field detection and antenna positioning Block Diagram AM ANT circuit FM ANT tuner circuit FM RF AMP circuit FM RF tuner circuit 80 1 MIX COIL AM RF AMP circuit CF 10.7MHz CF 10.7MHz CF 10.7MHz AM TRANS BPF 79 78 77 76 75 74 73 72 71 70 69 68 FE 67 66 65 64 63 62 61 AM block 60 AM-NC 2 ANT-D FM 1st MIX 3 Keyed AGC 5 59 AM 1stAMP TRIG NC STOP 58 NOIZE AMP N AGC W AGC 57 W AGC SD M AGC IF AGC S-METER 6 COIL tuner circuit NOIZE AGC RF RF 4 4.9V REG ANT-D AM 1st MIX FM Lo/DX OSC 55 2ndIFAMP AM detector AM Lo/DX 56 AM 2ndMIX CF 450kHz 54 7 low cut AMP 8 Differential AMP1 DAC block PLL 9 ECL 1/4, 1/6 1/8, 1/10 POWER ON RESET BUS- IF COUNTER IN 1 IN 2 IN 3-1 IN 3-2 IN 3-3 IN 3-4 NMOS Tr 10 swallow counter 11 LPF 12 P-CTR 6/8bit AD converter 13 phase det R-CTR 53 52 51 FM IF 50 DAC CIRCUIT S-METER (DC/AC) FM 1stAMP Limiter AMP 49 48 SD 2ndMIX BUS charge pump 14 47 46 15 16 Differential AMP2 DETECTET AUDIO CIRCUIT AFC Diversity block MUTE CIRCUIT DETECTER 45 ANT selector 17 18 19 CURRENT DRIVER 44 LOGIC 2.7V REG COUNTER Time constant generator DIVIDER 43 450kHz 42 3V REG 20 MAIN FIX CIRCUIT 21 22 XTAL OSC NOIZE AMP 23 24 25 26 27 28 29 30 31 450kHz OUTPUT_BUFFER 32 33 34 35 36 41 37 38 39 40 XTAL 10.25MHz No.8320-3/4 LV25300M Package Dimensions unit : mm (typ) 3266 17.2 1.6 0.825 14.0 0.65 0.825 0.825 0.3 0.15 41 61 40 80 21 14.0 1 20 15.6 3.0max 0.65 0.825 17.2 0.3 1.6 60 2.7 0.8 SANYO : QIP80M-E SANYO Semiconductor Co.,Ltd. assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all SANYO Semiconductor Co.,Ltd. products described or contained herein. SANYO Semiconductor Co.,Ltd. strives to supply high-quality high-reliability products, however, any and all semiconductor products fail or malfunction with some probability. It is possible that these probabilistic failures or malfunction could give rise to accidents or events that could endanger human lives, trouble that could give rise to smoke or fire, or accidents that could cause damage to other property. When designing equipment, adopt safety measures so that these kinds of accidents or events cannot occur. Such measures include but are not limited to protective circuits and error prevention circuits for safe design, redundant design, and structural design. In the event that any or all SANYO Semiconductor Co.,Ltd. products described or contained herein are controlled under any of applicable local export control laws and regulations, such products may require the export license from the authorities concerned in accordance with the above law. No part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying and recording, or any information storage or retrieval system, or otherwise, without the prior written consent of SANYO Semiconductor Co.,Ltd. Any and all information described or contained herein are subject to change without notice due to product/technology improvement, etc. When designing equipment, refer to the "Delivery Specification" for the SANYO Semiconductor Co.,Ltd. product that you intend to use. Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed for volume production. Upon using the technical information or products described herein, neither warranty nor license shall be granted with regard to intellectual property rights or any other rights of SANYO Semiconductor Co.,Ltd. or any third party. SANYO Semiconductor Co.,Ltd. shall not be liable for any claim or suits with regard to a third party's intellctual property rights which has resulted from the use of the technical information and products mentioned above. This catalog provides information as of April, 2007. Specifications and information herein are subject to change without notice. PS No.8320-4/4