la2806m Sanyo Semiconductor Corporation, la2806m Datasheet
la2806m
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la2806m Summary of contents
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... Ordering number: EN 3852D Overview The LA2806M is a one-chip voice signal processing IC for single-mechanism answering machines that incorporates the basic functions required for an answering machine as well as the microcontroller interface and analog switches that are needed in order to control those basic functions. Functions . Recording preamplifier (with ALC : LINE/MIC input) ...
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... Output ON voltage V sat [Control pin voltage Pin Pin 24 (MUTE REF Output voltage V REF LA2806M Conditions , P Power amplifier kHz CC Conditions –70 dBV input, measured between pins 5 and 8 –40 dBV input, measured between pins ...
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... Equivalent Block Diagram LA2806M Pd max – Ta Recommended mounting Independent IC Ambient temperature, Ta – °C No. 3852 - 3/11 ...
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... Test Circuit LA2806M Unit (resistance: , capacitance: F) No. 3852 - 4/11 ...
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... P D.C 20 PWR IN 21 PWR MONI 22 LINE OUT VOX. C/MUTE 25 VOX PWR ON/OFF 29 LINE ON/OFF 30 REC ON/OFF LA2806M SW1/ INPUT SW2 SW11 SW3 SW4 MUTE ICM ICM LINE MIC D0 PLAY REC HIGH LOW ...
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... This switch detects whether anyone is speaking or not by detecting the level of the signal (V13) on the filter amplifier output pin (pin 13). V13 % –18 dBV ... Pin 25 low The detection level is adjusted by inserting resistor R between TH (pin 23) and V Refer to the diagram below. LA2806M through a 100 k resistance. The control input threshold level 0.7 V ...
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... Alminium electrolytic capacitors and ceramic capacitors may cause oscillation at low temperatures. 3) Switching Noise Switching noise can be eliminated by applying a LOW-level pulse greater than PWR ON/OFF pin 28 while the preamplifier is being switched. LA2806M No. 3852 - 7/11 ...
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... The circuit board should be examined for short circuits between pins before initial power-up to prevent damage to the device when voltage is applied. 6) Short-circuit Load Short circuiting the LA2806M output for an extended period while the power is on can damage the device. 7) Playback Amplifier and Preamplifier Feedback Resistance As the playback amplifier and preamplifier employ a zero-bias method, the amplifier’s output DC level (V by the feedback resistance (R ) and the NF pin sink current ( µ ...
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... Sample Application Circuit LA2806M CPU No. 3852 - 9/11 ...
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... Input –60 dBV Input frequency, f – – P Power Amplifier Supply voltage, P.V – LA2806M ALC Characteristic, Distortion Preamplifer LINE input (ICM REC) Input level – dBV V – Line Input (ICM REC) Input Short Preamplifier Supply voltage, V ...
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... 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 October, 1997. Specifications and information herein are subject to change without notice. LA2806M Power Amplifier – V ...