UDA1345TS

General description

The UDA1345TS is a single-chip stereo Analog-to-Digital Converter (ADC) and Digital-to-Analog Converter (DAC) with signal processing features employing bitstream conversion techniques. The low power consumption and low voltage requirements make the device eminently suitable for use in low-voltage low-power portable digital audio equipment which incorporates recording and playback functions.

The UDA1345TS supports the I²S-bus data format with word lengths of up to 24 bits, the MSB justified data format with word lengths of up to 20 bits and the LSB justified serial data format with word lengths of 16, 18 and 20 bits.
The UDA1345TS also supports three combined data formats with MSB justified data output and LSB 16, 18 and 20 bits data input.

The UDA1345TS can be used either with static pin control or under L3 microcontroller interface. In L3 mode the UDA1345TS has basic sound features in playback mode such as de-emphasis, volume control and soft mute.

Features

General

• Low power consumption
• 2.4 to 3.6 V power supply range with 3.0 V typical
• 5 V tolerant TTL compatible digital inputs
• 256, 384 and 512f_s system clock
• Supports sampling frequencies from 8 to 100 kHz
• Non-inverting ADC plus integrated high-pass filter to cancel DC offset
• The ADC supports 2 V (RMS) input signals
• Overload detector for easy record level control
• Separate power control for ADC and DAC
• Integrated digital interpolation filter plus non-inverting DAC
• Functions controllable either by L3 microcontroller interface or via static pins
• The UDA1345TS is pin and function compatible with the UDA1344TS
• Small package size (SSOP28).

Multiple format input interface

• I²S-bus, MSB-justified up to 24 bits and LSB-justified 16, 18 and 20 bits format compatible
• Three combined data formats with MSB data output and LSB 16, 18 and 20 bits data input
• 1f_s input and output format data rate.

DAC digital sound processing

The sound processing features of the UDA1345TS can only be used in L3 microcontroller mode:

• Digital dB-linear volume control (low microcontroller load) via L3 microcontroller with 1 dB steps
• Digital de-emphasis for 32, 44.1 and 48 kHz
• Soft mute via cosine roll-off (in 1024 samples).

Note: in contrast to the UDA1344TS, the UDA1345TS does not have bass-boost and treble.

Advanced audio configuration

• Stereo single-ended input configuration
• Stereo line output (under microcontroller volume control), no post filter required
• High linearity, dynamic range and low distortion.

Products/packages

Pricing/ordering/availability

Block diagrams/pinning

Design support

Support Documents

75014374_ap; Audio Processing ()

75011122; P9xC557Ex 8-bit 80C51 with up to 64 Kbytes of internal program memory, 5 I/O ports and 10-bit ADC (2003-03-07)

Print / Email

• Print this information
• Email this information

Disclaimer

The information published on product information pages of the www.nxp.com or www.semiconductors.com websites is an extract from product data sheets and is for information purposes only. For detailed information please check the most recent version of the relevant product data sheet as published on these websites. In the event of any conflict between product information pages and data sheets or deviations from information provided in the product data sheets on these product information pages, the information provided in the product data sheets shall prevail.

The product status of the product(s) described in the product data sheet may have changed since publication of the data sheet and therefore information in datasheets on product status may be outdated. The latest information on product status is published on the product information pages of the above-mentioned websites.

As from October 1st, 2006 Philips Semiconductors has a new trade name - NXP Semiconductors, which will be used in future data sheets together with new contact details. In data sheets where the previous Philips references remain, please use the new links as shown below.

http://www.philips.semiconductors.com use http://www.nxp.com

http://www.semiconductors.philips.com use http://www.nxp.com (Internet)

sales.addresses@www.semiconductors.philips.com use salesaddresses@nxp.com (e-mail)

The copyright notice at the bottom of each page (or elsewhere in the document, depending on the version)
- © Koninklijke Philips Electronics N.V. (year). All rights reserved -
is replaced with:
- © NXP B.V. (year). All rights reserved.-

If you have any questions related to the data sheet, please contact our nearest sales office via e-mail or phone (details via salesaddresses@nxp.com). Thank you for your cooperation and understanding.