Preliminary Datasheet AS3510

Rev. 1v2, June 2004

Page 1 of 2

General Description

The AS3510 combines high flexibility and outstanding

performance for analog audio front-end solutions.

This codec-chip contains a high performance 18 bit digital

to analog converter. The dynamic range exceeds 95dB for

best audio quality, for multi media applications (audio

playback) within battery or line operated equipment.

An additional audio power amplifier can directly drive

external headphones or small 4

Ω speakers with a power of

up to half a watt. The power-up is click- and pop-less due to

a smooth start-up circuitry. The overall distortion level is

always below 0.02%.

The microphone input amplifier contains an automatic gain

control (AGC) with a dynamic range of 40dB to generate an

amplified and compressed signal for the ADC, which

provides 14 Bit resolution at 8kHz sampling-rate.

Furthermore all necessary power management is included

such as bandgap reference and four voltage regulators. The

two 2.9V regulators are used internally (analog and digital

supply), but can also be used for external purposes as well.

The third output is designed to supply the peripheral cells

and an external digital core, and is programmable from 1.5V

to 2.5V in 5 steps (default is 2.5V). They are all powered

through a DCDC-Converter, which can work down to a

voltage of 1V. So the whole chip can work from a single

battery cell.

The fourth regulator is only used for generating the supply

voltage for the analog USB 1.1 interface circuit. It is

supplied via the USB connector. The performance of the

regulators is excellent (noise, line- and load-regulation) and

allows the direct supply of sensitive analog circuits.

Because of the internal supply and signal filtering only few

small external capacitors are required for de-coupling and

stabilising and lead to very low output noise.

The current consumption is very low and makes the chip

ideally for battery powered devices.

Key Features

On chip DCDC Converter

-

1.0 to 5.5V input voltage range

4 On-chip high performance voltage regulators

-

Digital Supply, 2.9V

-

Analog Supply, 2.9V

-

Core Supply, 1.5 to 2.5V

-

USB Transceiver Supply, 3.2V

18 Bit stereo DAC

-

Dynamic range >95 dB

-

THD < -85dB

-

De-emphasis for 32 kHz, 44.1 kHz and 48 kHz

Stereo power audio amplifier

-

Max. 2x 0.5W @ 4

Ω

-

Analog volume control –39dB to +3dB, 3dB steps

including mute)

-

Click- and pop-less startup and power down

-

Auxiliary inputs for additional audio sources

Microphone input

-

14 Bit

Σ∆−ADC , 8kHz sampling rate

-

Automatic gain control (AGC)

-

Low power consumption

-

Wide battery supply range 1.0V – 5.5V

-

Standard I2S interface

-

Audio sampling rates: 8, 11.025, 12, 16, 22.05, 24, 32,

44.1, and 48 kHz

-

I2C control interface

-

USB 1.1 front-end

-

49 Pin BGA Package

Applications

-

Audio frontend for cellular phones

-

Stand alone MP3 player

-

CD and DVD player

-

PDAs

Analog Voice Codec

AS14889

PRELIMINARY DATA SHEET

Analog Audio Front-End

AS3510

PRODUCT BRIEF