AS3510 AMSCO | Alldatasheet

Document overview

  • Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
  • PDF pages: 2

Technical content

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 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 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 @ 4Ω 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

Preliminary Datasheet AS3510 Rev. 1v2, June 2004 Page 2 of 2 Block Diagram LDO1 Right Gain Control +3...-39dB Power Amplifier Serial Audio Interface (I2S) Clock Generation Interpolator *64 Interpolator *64 Multibit SD Modulator with DWA Multibit SD Modulator with DWA DAC + SC LPF DAC + SC LPF BGND Buffer Pop-less Startup OUTR BVSS OUTL BGND QLDO3 QLDO2 QLDO1 AVDD Referenze Voltage & Current Generation AVSS2 AVSS VREF AGND MICN MICP LDO3 LDO2 Amplifier Gain Control +3...-39dB Left Power DVSS Microphon Amplifier 2nd Order SD ADC 14Bit, 8kHz + Interpolator Digital I2S Synchronisation Dither Generation Head- phone Jack V_REG1 V_REG3 V_REG2 100n 10u 100n 10u 2,2u / 6,3V Z5U 2,2u / 6,3V Z5U 2,2u / 6,3V Z5U c2,2u with RL=150 Ohm, or 330u with RL=8 Ohm 2,2u with RL=150 Ohm, or 330u with RL=8 Ohm 1 to 5.5V 2,9V, 50mA @ BVDD=3V 2,9V, 50mA @ BVDD=3V ENLDO12 PLDO3 ENDCDC Control Interface (I2C Slave) SCL SDA DCDC Converter USB 1.1 + LDO3.2V AUXR AUXL X X X X Single Ended to Differental Converter UVDD VTRM VBAT1V SW VSS BVDD PVDD DVDD BVDD SDO MCLK LRCK SCLK SDI µP Digital Audio Interface µP Control Interface VTRM BVDD AVSS BVDD AVSS BVDD AVSS BVSS BVDD BVDD BVSS BVDD BVSS VPO VMO VP VM OEN RCV USB Connector µP USB Interface Battery 1,75V to 2.5V, 200mA @ BVDD=3V Figure 1 Block Diagram of AS3510