Information as of 2000-01-10
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UCB1100; Advanced modem/audio analog front-end

• Description • Features • Applications • Datasheet • Find similar products

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Description

The UCB1100 is a single chip, integrated mixed signal audio and telecom codec. The single channel audio codec is designed for direct connection of a microphone and speaker. The built-in telecom codec can directly be connected to a DAA and supports high speed modem protocols. The incorporated 10 bit analogue to digital converter and the touch screen interface provides complete control and readout of a connected 4 wire resistive touch screen. The 10 additional general purpose I/O pins provides programmable inputs and/or outputs to the system.

The UCB1100 has a serial interface bus (SIB) intended to communicate to the system controller. Both the codec input and output data and the control register data is multiplexed on this SIB interface.

Features

• 48-pin LQFP (SOT313-2) small body SMD package and low external component count result in minimal PCB space requirement.
• A 12-bit sigma delta audio codec with programmable sample rate, input and output voltage levels, capable of connecting directly to speaker and microphone, including digitally controlled mute, loopback and clip detection functions
• A 14-bit sigma delta telecom codec with programmable sample rate, including digitally controlled input voltage level, mute, loopback and clip detection functions. The telecom codec is intended for direct connection to a DAA (digital access arrangement) and includes a built-in sidetone suppression circuit.
• A complete 4 wire resistive touch screen interface circuit supporting position, pressure and plate resistance measurements.
• A 10-bit successive approximation ADC with internal track and hold circuit and analogue multiplier for touch screen readout and monitoring of four external high voltage (7.5V) analogue voltages.
• A high speed, 4 wire serial interface data bus (SIB) for communication to system controller.
• A 3.3V supply voltage and built in power saving modes make the UCB1100 optimal for portable and battery powered applications.

Applications

• Personal Intelligent Communicators
• Personal Digital Assistants (PDA)
• Screen phones
• Smart Phone and smart Fax
• Intelligent Communicators

Datasheet

Type nr.	Title	Publication release date	Datasheet status	Page count	File size (kB)	Datasheet
UCB1100	Advanced modem/audio analog front-end	08-May-98	Preliminary Specification	36	290	Open

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