Ordering number : EN4862C Bi CMOS LSI LV3400M FM Multiplex Filter Overview Package Dimensions The LV3400M is a filter IC designed for FM multiplex broadcast reception and is used in combination with the Sanyo LC72700 demodulation/error correction IC. The adoption of switched capacitor (SCF) technology means that frequency adjustment is not required and that the LV3400M provides stable operation. unit: mm 3111-MFP14S [LV3400M] Functions • • • • • 76 kHz band-pass filter (Gaussian filter) 54 kHz high-pass filter 125 kHz low-pass filter Anti-aliasing filter Limiter circuit Features • Adjustment-free, due to the use of SCF technology. • Few external components are required. SANYO: MFP14S Specifications Absolute Maximum Ratings at Ta = 25°C Parameter Maximum supply voltage Maximum input voltage Allowable power dissipation Symbol Conditions Ratings VCC max V3, V7, V12 Unit 6 –0.3 to VCC + 0.3 Pd max 180 V V mW Operating temperature Topr –40 to +85 °C Storage temperature Tstg –55 to +125 °C Pin Assignment SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN 13096HA (OT)/91295HA (OT)/83194TH (OT) No. 4862-1/4 LV3400M Operating Conditions at Ta = 25°C Parameter Symbol Operating supply voltage range Conditions Ratings VCC A composite signal corresponding to a 100% FM modulation level Unit 4.5 to 5.5 V 200 to 300 mVrms 8 to 30 mVrms Input signal voltage range VIN Clock frequency fCK 3.60 MHz Clock input voltage VCK 1.0 to VCC Vp-p fIN = 76 kHz, CW Operating Characteristics at Ta = 25°C, VCC = 5 V, fCK = 3.6 MHz, VCK = 1 Vp-p Parameter Symbol Current drain SCF block common voltage min typ max Unit ICCO The pin 14 current for a no-signal input to VIN Conditions 3.8 6 8 mA V2 The pin 2 voltage for a no-signal input to VIN 2.1 2.3 2.5 V Signal input resistance Rin3 The pin 3 input resistance 36 kΩ Clock input resistance Rin12 The pin 12 input resistance 100 kΩ [MSK Output] MSK input sensitivity V3S MSK output high level V10H MSK output low level V10L The input level such that an MSK output with the same frequency is acquired when a 76-kHz CW is applied as VIN. 4 mVrms 4 VIN = 76 kHz, 4 mVrms, CW V 0.4 V Reference Characteristics Ratings Unit AAF cutoff frequency Parameter Symbol Conditions 300 kHz HPF corner frequency 54 kHz LPF cutoff frequency 125 kHz BPF center frequency 76 kHz BPF -3 dB frequency 19 kHz Maximum in-band group delay time difference ±5 µs Pin Functions PinNo. Symbol 1 GND Description 2 VCOM SCF block common. A decoupling capacitor must be used. 3 SIG. IN Signal input. Input an FM modulated signal (composite signal). A modulated signal between 200 and 300 mVrms should be input. The input sensitivity for a pure 76-kHz signal is 4 mVrms or lower. 10 MSK OUT 11 VREF 12 CLK IN 13 CLK OUT 14 VCC 4 to 9 NC, Test PIN Ground MSK output (CMOS output) Limiter reference voltage. A low-pass filter is formed by the internal resistance (which is about 10 kΩ) and an external capacitor. 3.6-MHz clock input. The DC bias at the CMOS inverter input, to which a 100-kΩ feedback resistor is connected, is about VCC/2. The clock signal is input through a capacitor. The clock output that was wave-shaped by an inverter. This pin is normally left open. Power supply This pin must be left open. Usage Notes 1. Pins 4 to 9 and pin 13 are left open in normal use. 2. The clock should be taken from the decoder (LC72700) clock output pin and input to pin through a capacitor of about 100 pF. Spurious radiation from the clock line can be reduced by inserting a resistor in the line and thus smoothing the rising and falling edges. This signal is then input to pin 12 through a capacitor. No. 4862-2/4 LV3400M Test Circuit Note: Pins 4 to 9 are left open. No. 4862-3/4 LV3400M ■ No products described or contained herein are intended for use in surgical implants, life-support systems, aerospace equipment, nuclear power control systems, vehicles, disaster/crime-prevention equipment and the like, the failure of which may directly or indirectly cause injury, death or property loss. ■ Anyone purchasing any products described or contained herein for an above-mentioned use shall: ➀ Accept full responsibility and indemnify and defend SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors and all their officers and employees, jointly and severally, against any and all claims and litigation and all damages, cost and expenses associated with such use: ➁ Not impose any responsibility for any fault or negligence which may be cited in any such claim or litigation on SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors or any of their officers and employees jointly or severally. ■ Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed for volume production. SANYO believes information herein is accurate and reliable, but no guarantees are made or implied regarding its use or any infringements of intellectual property rights or other rights of third parties. This catalog provides information as of December, 1997. Specifications and information herein are subject to change without notice. No. 4862-4/4