UCB1400BE,151

Overview

The UCB1400BE is a stereo audio codec integrated with a touch screen controller and power management monitor, manufactured by NXP USA Inc. It features a 48-pin LQFP surface mount package (7 x 7 x 1.4 mm). The device incorporates an AC '97 Rev. 2.1 interface for communication with host controllers like the Intel Xscale processor. It supports 20-bit stereo audio with programmable sample rates and input/output gain control. A built-in 10-bit ADC handles touch screen readout and monitors four external high-voltage sources up to 7.5 V. The unit operates on a 3.3 V supply voltage and includes ten general-purpose I/O pins.

Feature Summary

• Integrates AC '97 Rev. 2.1 digital serial interface for primary codec communication
• Includes 4-wire resistive touch screen interface supporting position and pressure measurements
• Features 10-bit successive approximation ADC with internal track-and-hold circuit
• Provides stereo line/headphone output with bass/treble control and virtual ground

Applications

• Smart mobile phones
• Handheld PCs
• Palm-top PCs
• Personal Intelligent Communicators (PIC)
• Personal Digital Assistants (PDA)

Procurement Notes

Verify that the component matches the specified 48-lead plastic low profile quad flat package (LQFP48) with body dimensions of 7 x 7 x 1.4 mm. Confirm the part number suffix indicates the correct revision and packaging variant. Ensure compatibility with the required 3.3 V supply voltage and AC '97 Rev. 2.1 host controller interface before integration into the design.

Selection Notes

Select this component for portable applications requiring combined audio processing and touch screen control within a minimal PCB footprint. It is suitable for systems utilizing AC '97 architecture where a primary codec configuration is needed. Consider the 10-bit ADC resolution for touch accuracy and the 20-bit audio resolution for sound quality requirements in handheld devices.

Part Context

This component belongs to the UCB1400 series of specialized consumer circuits designed for mobile and handheld computing platforms. It consolidates audio codec, touch screen controller, and power monitoring functions into a single chip, reducing system complexity. The device was originally documented under Philips Semiconductors specifications before transitioning to NXP branding.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify pin compatibility and register mapping if considering alternative audio codecs with similar AC '97 interfaces.