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 Ω @ 5.0 V – 2 x 550 mW into 8 Ω @ 3.7 V – 2 x 230 mW into 8 Ω @ 2.5 V ♦ High-power Mono Output at 10% THD+N – 1 x 1.90 W into 4 Ω @ 5.0 V – 1 x 1.00 W into 4 Ω @ 3.7 V – 1 x 350 mW into 4 Ω @ 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 Ω @ 1.8 V – 2 x 44 mW Into 16 Ω @ 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
|