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Ordering number : EN4862C
Bi CMOS LSI
LV3400M
FM Multiplex Filter
Overview
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.
Package Dimensions
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 = 25C
Parameter Maximum supply voltage Maximum input voltage Allowable power dissipation Operating temperature Storage temperature Symbol VCC max V3, V7, V12 Pd max Topr Tstg Conditions Ratings 6 -0.3 to VCC + 0.3 180 -40 to +85 -55 to +125 Unit V V mW C 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 = 25C
Parameter Operating supply voltage range Input signal voltage range Clock frequency Clock input voltage Symbol VCC VIN fCK VCK A composite signal corresponding to a 100% FM modulation level fIN = 76 kHz, CW Conditions Ratings 4.5 to 5.5 200 to 300 8 to 30 3.60 1.0 to VCC Unit V mVrms mVrms MHz Vp-p
Operating Characteristics at Ta = 25C, VCC = 5 V, fCK = 3.6 MHz, VCK = 1 Vp-p
Parameter Current drain SCF block common voltage Signal input resistance Clock input resistance [MSK Output] MSK input sensitivity MSK output high level MSK output low level V3S V10H V10L The input level such that an MSK output with the same frequency is acquired when a 76-kHz CW is applied as VIN. VIN = 76 kHz, 4 mVrms, CW 4 0.4 4 mVrms V V Symbol ICCO V2 Rin3 Rin12 Conditions The pin 14 current for a no-signal input to VIN The pin 2 voltage for a no-signal input to VIN The pin 3 input resistance The pin 12 input resistance min 3.8 2.1 typ 6 2.3 36 100 max 8 2.5 Unit mA V k k
Reference Characteristics
Parameter AAF cutoff frequency HPF corner frequency LPF cutoff frequency BPF center frequency BPF -3 dB frequency Maximum in-band group delay time difference Symbol Conditions Ratings 300 54 125 76 19 5 Unit kHz kHz kHz kHz kHz s
Pin Functions
PinNo. 1 2 3 10 11 12 13 14 4 to 9 Symbol GND VCOM SIG. IN MSK OUT VREF CLK IN CLK OUT VCC NC, Test PIN Ground SCF block common. A decoupling capacitor must be used. 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. MSK output (CMOS output) Limiter reference voltage. A low-pass filter is formed by the internal resistance (which is about 10 k) and an external capacitor. 3.6-MHz clock input. The DC bias at the CMOS inverter input, to which a 100-k 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. Description
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
s 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. s Anyone purchasing any products described or contained herein for an above-mentioned use shall: 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: 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. s 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

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