CDB42L52開(kāi)發(fā)板套件編程器的評(píng)估演示板及套件規(guī)格書(shū)PDF中文資料

CDB42L52屬于開(kāi)發(fā)板套件編程器的評(píng)估演示板及套件。由凌云邏輯制造生產(chǎn)的CDB42L52評(píng)估和演示板及套件該系列產(chǎn)品提供了一種方便的方法，在經(jīng)過(guò)驗(yàn)證的實(shí)施環(huán)境中評(píng)估某些重點(diǎn)器件的性能或特性。評(píng)估方法通常有完善的文檔說(shuō)明，并且視乎具體情況由評(píng)估軟件提供支持。產(chǎn)品通常由印刷電路板組成，板上已裝有重點(diǎn)器件以及必要或有用的支持元器件，另外也可能包括其他組件，例如電纜或電源。對(duì)于數(shù)量特別多或類(lèi)別獨(dú)特的器件類(lèi)別(如 ADC、DAC 和開(kāi)關(guān)模式電源)，評(píng)估平臺(tái)可組合為一個(gè)單獨(dú)的產(chǎn)品系列。

General Description

The CS42L52 is a highly integrated, low-power stereo CODEC with headphone and Class D speaker amplifiers. The CS42L52 offers many features suitable for low-power, portable system applications.

Stereo CODEC

? High Performance Stereo ADC & DAC

– 99 dB (ADC), 98 dB (DAC) Dyn. Range (A-wtd)

– -88 dB THD+N

? Flexible Stereo Analog Input Architecture

– 4:1 Analog Input MUX

– Analog Input Mixing

– Analog Passthrough with Volume Control

– Analog Programmable Gain Amplifier (PGA)

? Programmable Automatic Level Control (ALC)

– Noise Gate for Noise Suppression

– Programmable Threshold & Attack/Release Rates

? Dual MIC Inputs

– Differential or Single-ended

– +16 dB to +32 dB w/ 1dB step MIC PreAmplifiers

– Programmable, Low-noise MIC Bias Levels

? Digital Signal Processing Engine

– Bass & Treble Tone Control, De-emphasis

– Master Vol. and Independent PCM SDIN + ADC SDOUT Mix Volume Control

– Soft-ramp & Zero-Cross Transitions

– Programmable Peak-detect and Limiter

– Beep Generator w/Full Tone Control

Class D Stereo/Mono Speaker Amplifier

? No External Filter Required

? High-power Stereo Output at 10 THD+N

– 2 x 1.00 W into 8 ? @ 5.0 V

– 2 x 550 mW into 8 ? @ 3.7 V

– 2 x 230 mW into 8 ? @ 2.5 V

? High-power Mono Output at 10 THD+N

– 1 x 1.90 W into 4 ? @ 5.0 V

– 1 x 1.00 W into 4 ? @ 3.7 V

– 1 x 350 mW into 4 ? @ 2.5 V

? Direct Battery-powered Operation

– Battery Level Monitoring & Compensation

? 81 Efficiency at 800 mW

? Phase-aligned PWM Output Reduces Idle Channel Current

? Spread Spectrum Modulation

? Low Quiescent Current

Stereo Headphone Amplifier

? Ground-centered Outputs

– No DC-Blocking Capacitors Required

– Integrated Negative Voltage Regulator

? High-power Output at -75 dB THD+N

– 2 x 23 mW Into 16 ? @ 1.8 V

– 2 x 44 mW Into 16 ? @ 2.5 V

System Features

? 12, 24, and 27 MHz Master Clock Support in Addition to Typical Audio Clock Rates

? High-performance 24-bit Converters

– Multi-bit Delta-Sigma Architecture

– Very Low 64Fs Oversampling Clock Reduces Power Consumption

? Low-power Operation

– Stereo Analog Passthrough: 10 mW @ 1.8 V

– Stereo Playback: 14 mW @ 1.8 V

– Stereo Rec. and Playback: 23 mW @ 1.8 V

? Variable Power Supplies

– 1.8 V to 2.5 V Digital & Analog

– 1.6 V to 5 V Class D Amplifier

– 1.8 V to 2.5 V Headphone Amplifier

– 1.8 V to 3.3 V Interface Logic

? Power-down Management

– ADC, DAC, CODEC, MIC Pre-Amplifier, PGA, Headphone Amplifier, Speaker Amplifier

? Analog & Digital Routing/Mixes:

– Line/Headphone Out = Analog In (ADC Bypassed)

– Line/Headphone/Speaker Out = ADC + Digital In

– Digital Out = ADC + Digital In

– Internal Digital Loopback

– Mono Mixes

? Flexible Clocking Options

– Master or Slave Operation

– High-impedance Digital Output Option (for easy MUXing between CODEC & other data sources)

– Quarter-speed Mode - (i.e. allows 8 kHz Fs while maintaining a flat noise floor up to 16 kHz)

– 4 kHz to 96 kHz Sample Rates

? I2C? Control Port Operation

? Headphone/Speaker Detection Input

? Pop and Click Suppression

Applications

? Digital Voice Recorders, Digital Cameras, & Camcorders

? PDA’s

? Personal Media Players

? Portable Game Consoles