LA8519M Overview
ENN6471 Monolithic Linear IC LA8519M I/O Switch/Voice Signal-Processing IC for Cordless Telephones Overview The LA8519M is a cordless telephone base unit IC that provides I/O switching, voice signal processing, and other functions. It integrates, on a single chip, crosspoint switch, power amplifier, electronic volume and tone control, microphone amplifier, speech network, and other functions.
LA8519M Key Features
- Allows switching between two anti-sidetone networks (near terminal/far terminal) depending on the line current, and thus
- Built-in transmitter/receiver amplifier driver power supply switching circuit allows munication using extension without
- The receiver amplifier supports both ceramic receivers (BTL) and dynamic receiver (single)
- Built-in power amplifier (load: 8 to 32 Ω): VCC = 5 V, RL = 8 Ω, Pomax = 200 mW
- The power amplifier signal path includes an electronic volume control (7 steps of about 3.8 dB each)
- Includes a 10-input/9-output crosspoint switch that provides mixing functions for easy implementation of systems that su
- Speech network block
- Impedance matching, 2-wire/4-wire converter, line driver, BN circuit network switching circuit, transmitter amplifier, B
- Audio signal-processing block
- Power amplifier, electronic volume and tone control, preamplifier with ALC, voice level detection (VOX), beep tone input