Preliminary Datasheet AS3510
Rev. 1v 2, June 2 004 CONF IDENTIA L Page 1 of 19
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 ba ttery or lin e operated equipment.
An additional audio power amplifier can directly drive
external headphones or small 4Ω 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 belo w 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 res olution at 8kHz samplin g-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 t he direct su pply of se nsitive anal og circui ts.
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 fo r batte ry powered devices.
Key Feature s
On chip DCDC Converter
- 1.0 to 5.5V input voltage range
4 On-chi p high perf ormance vol tage reg ulators
- Digital Supply, 2.9V
- Analog Su pply, 2.9V
- Core S upply, 1.5 t o 2.5V
- USB Transc eiver Suppl y, 3.2V
18 Bit stereo DAC
- Dynami c range >95 dB
- THD < - 85dB
- De-emphas is for 3 2 kHz, 44.1 kHz and 48 k Hz
Stereo po wer audio amplifie r
- Max. 2x 0.5W @ 4Ω
- Analog vol ume control –39dB to + 3dB, 3dB st eps
including mute)
- Click- a nd pop-less startup a nd power d own
- Auxiliary inputs fo r additional audi o sources
Micropho ne input
- 14 Bit Σ∆−ADC , 8kHz sam pling ra te
- Automatic gain control (AGC)
- Low powe r consumpti on
- Wide batt ery supply range 1.0V – 5.5V
- Standard I2S interface
- Audio sampli ng rates: 8, 11.025, 12, 16, 22.05, 24, 32,
44.1, and 48 kHz
- I2C cont rol interf ace
- USB 1.1 front-e nd
- 49 Pin BGA Packa ge
Applications
- Audio fr ontend for c ellular ph ones
- Stand alo ne MP3 play er
- CD and DVD player
- PDAs
Analog Voice Codec
AS14889 PRELIM INARY DATA SHEET
Analog Audio Front-End
AS3510 DATA SHEET
CONFIDENTIAL
ams AG
Technical content still valid