IL34118 Datasheet PDF

Part Number IL34118
Manufacturer ETC
Title Voice Switched Speakerphone Circuit
Description ...
Features ...

File Size 632.62KB
Datasheet IL34118 PDF File

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IL34018 : The IL34018 speaker-phone integrated circuit incorporates the necessary functions to produce a high quality hands-free speaker-phone system. The applications include household and office speaker-phones, intercom systems, hand free kit for mobile phones, and others IL34018 FEATURES • All necessary level detection and attenuation controls for a hand-free telephone included. • Background noise level monitoring with long time constant. • Background sound level compensation for transmit and receive levels as well as the background level. • Wide operating dynamic range through signal compression. • On-chip voltage regulators illuminate external regulators for lining operation. • Power audio ampl.

IL34063A : TECHNICAL DATA DC-TO-DC CONVERTER CONTROL CIRCUITS IL34063A The IL34063A is a monolithic control circuit containing the primary functions required for DC-to-DC converters. These devices consist of an internal temperature compensated reference, comparator, controlled duty cycle oscillator with an active current limit circuit, driver and high current output switch. This series was specifically designed to be incorporated in Step-Down and Step-Up and Voltage-Inverting applications with a minimum number of external components. FEATURES FUNCTIONAL BLOCK DIAGRAM • • • • • • • Operation from 3.0 V to 40 V Input Low Standby Current Current Limiting Output Switch Current to 1.5 A Output Voltage A.

IL34118 : INTRODUCTION The fundamental difference between the operation of a speakerphone and a handset is that of half-duplex versus full-duplex. The handset is full duplex since conversation can occur in both directions (transmit and receive) simultaneously. A speakerphone has higher gain levels in both paths, and attempting to converse full duplex results in oscillatory problems due to the loop that exists within the system. The loop is formed by the receive and transmit paths, the hybrid, and the acoustic coupling (speaker to microphone). The only practical and economical solution used to data is to design the speakerphone to function in a half duplex mode - i.e., only one person speaks at a time,.

IL34119 : Pin 1 2 3 Symbol CD FC2 FC1 Description Chip Disable - Digital input. A Logic “0” (0.8 V) sets normal operation. A Logic “1” (≥2.0 V) sets the power down mode. Input impedance is nominally 90 KΩ. A capacitor at this pin increases power supply rejection, and affects turn-on time. This pin can be left open if the capacitor at FC1 is sufficient. Analog Ground for the amplifiers. A 1.0 µF capacitor at this pin (with a 5.0 µF capacitor at Pin 2) provides 52 dB of power supply rejection. Turn-on time of the circuit is affected by the capacitor on this pin. This pin can be used as an alternate input. Amplifier input. The input capacitor and resistor set low frequency rolloff and input impedance. T.

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IL3480 : 100mA, Quasi e Low-Dropout Voltage Regulator w 1.2V guaranteed maximum dropout over full load and temperature ranges ● ● ● ● a t a D Features: . w 3.3, 5V versions available w 30V maximum input for operation Application: Sh e U 4 t m o .c TECHNICAL DATA IL3480 TO - 92 100 mA guaranteed minimum load current Tiny alternative to 78LXX series and similar devices Low-Dropout Voltage Regulator ● Post regulator for switching DC/DC converter ● Bias supply for analog circuits ● ● Typical Application Circuit IL3480-3.3 Absolute Maximum Ratings Input Voltage Junction Temperature 35V +150°C w w w t a .D S a e h U 4 t e .c m o 1. Ground 2. Output 3. Input w w w .D a S a t e.

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