The CS43L22 is low power stereo digital/analog converter (DAC) with integrated headphone and Class D speaker amplifiers that operates from a low voltage analog and digital core. The DAC output path includes a digital signal processing engine with various fixed-function controls, such as tone and volume control, and includes de-emphasis, limiting functions and beep generator that delivers tones selectable across a range of two octaves. The stereo headphone amplifier is powered from a separate positive supply and the integrated charge pump provides a negative supply allowing for a ground-centered analog output to eliminate the need for DC blocking capacitors. The Class D stereo speaker does not require an external filter and can be powered directly from a battery.
Features
Stereo DAC
Digital signal processing engine
Bass, treble tone control
Soft ramp, zero-cross transitions
Programmable peak detect and limiter
Beep generator with full tone control
Class D Stereo/Mono Speaker Amplifier
No external filter required
Direct battery powered operation
Battery level monitoring, compensation
82% at 800 mW
Phase aligned PWM output reduces idle channel current
Low quiescent current
Stereo Headphone Amplifier / Line Output
Ground-centered outputs
Integrated charge pump
No DC blocking capacitor required
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
Low power operation
Stereo analog pass through: 10 mW @ 1.8 V
Stereo playback: 14 mW @ 1.8 V
Variable power supplies
1.8 V to 2.5 V digital, analog
2.5 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
Flexible clocking options
Master or slave operation
High impedance digital output option
Quarter-speed mode (i.e. allows 8 kHz Fs while maintaining a flat noise floor up to 16 kHz)
I²C control port operation
Headphone/speaker detection input
The CS43L22 is low power stereo digital/analog converter (DAC) with integrated headphone and Class D speaker amplifiers that operates from a low voltage analog and digital core. The DAC output path includes a digital signal processing engine with various fixed-function controls, such as tone and volume control, and includes de-emphasis, limiting functions and beep generator that delivers tones selectable across a range of two octaves. The stereo headphone amplifier is powered from a separate positive supply and the integrated charge pump provides a negative supply allowing for a ground-centered analog output to eliminate the need for DC blocking capacitors. The Class D stereo speaker does not require an external filter and can be powered directly from a battery.
Features
Stereo DAC
- Digital signal processing engine
- Bass, treble tone control
- Soft ramp, zero-cross transitions
- Programmable peak detect and limiter
- Beep generator with full tone control
Class D Stereo/Mono Speaker Amplifier
- No external filter required
- Direct battery powered operation
- Battery level monitoring, compensation
- 82% at 800 mW
- Phase aligned PWM output reduces idle channel current
- Low quiescent current
Stereo Headphone Amplifier / Line Output
- Ground-centered outputs
- Integrated charge pump
- No DC blocking capacitor required
- 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
- Low power operation
- Stereo analog pass through: 10 mW @ 1.8 V
- Stereo playback: 14 mW @ 1.8 V
- Variable power supplies
- 1.8 V to 2.5 V digital, analog
- 2.5 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
- Flexible clocking options
- Master or slave operation
- High impedance digital output option
- Quarter-speed mode (i.e. allows 8 kHz Fs while maintaining a flat noise floor up to 16 kHz)
- I²C control port operation
- Headphone/speaker detection input
