The CS43L21 is a highly integrated, 24-bit, 96 kHz, low power stereo DAC, based on multi-bit delta-sigma modulator architecture, which allows infinite sample rate adjustment between 4 kHz and 100 kHz. The CS43L21 delivers excellent audio performance while providing portable device developers with an innovative solution that maximizes battery life while minimizing end-product form factors. The CS43L21's key distinction is that it operates from a single, 1.8 V power supply for low power consumption, yet delivers plenty of output power, 46 mW, into stereo 16 ohm headphones for a great listening experience. By generating its own on-chip negative power supply voltage, the CS43L21 provides ground-centered outputs, which eliminates costly, space-consuming DC blocking capacitors that some competing solutions require. The elimination of these capacitors not only reduces the implementation cost but it also greatly simplifies product design and saves valuable circuit board space. Furthermore, the ground centered outputs, help reduce startup pops and clicks.
- 24-bit Converter
- 4 kHz to 96 kHz Sample Rate
- Multi-bit Delta Sigma Architecture
- 98 dB Dynamic Range (A-wtd)
- -86 dB THD+N
- Headphone Amplifier - GND Centered
- On-Chip Charge Pump Provides -VA_HP
- No DC-Blocking Capacitor Required
- 46 mW Power Into Stereo 16 ? @ 1.8 V
- 88 mW Power Into Stereo 16 ? @ 2.5 V
- -75 dB THD+N
- Digital Signal Processing Engine
- Bass & Treble Tone Control, De-Emphasis
- PCM Mix w/Independent Vol Control
- Master Digital Volume Control
- Soft Ramp & Zero Cross Transitions
- Beep Generator
- Separate Volume Control
- Pop and Click Suppression
- Low Power Operation
- Stereo Playback: 12.93 mW @ 1.8 V
- Variable Power Supplies
- 1.8 V to 2.5 V Digital & Analog
- 1.8 V to 3.3 V Interface Logic
- Power Down Management
- Software Mode (I²C & SPI™ Control)
- Small 32 Pin QFN
- Available in Tape & Reel (CS43L21-CNZR)