Low Power Stereo Codec with Headphone Amplifier
The low power CS42L51 audio codec delivers excellent audio performance while maximizing battery life and minimizing end-product form factors. The CS42L51 operates from a single, 1.8 V power supply to optimize power consumption, yet deliver 46 mW into stereo 16 ohm headphones for a great listening experience. This 24-bit, 96 kHz stereo codec allows infinite sample rate adjustment between 4 kHz and 100 kHz and generates its own on-chip negative power supply voltage.
CIRRUS ROCKS® CIRRUS® ENGINEERED TO ROCK® INNOVATION THAT ROCKS®
Technologies
Application Categories
Features
- Low power audio codec
- Stereo playback: 12.93 mW @ 1.8 V
- Stereo record and playback: 20 mW @ 1.8 V
- Operates from a single 1.8 V or 2.5 V supply
- Analog inputs
- 3:1 stereo input selector
- PGA, +12 dB to -3 dB in 0.5 dB steps
- +32 dB or +16 dB stereo microphone pre-amp with bias supply
- Automatic level control with overflow detection
- Analog outputs
- Configurable as stereo headphone or line level outputs
- Ground centered outputs – no DC blocking capacitors required
- Up to 88 mW into stereo 16 Ω headphones (2.5 V)
- Up to 46 mW into stereo 16 Ω headphones (1.8 V)
- Digital signal processing engine
- Digital bass and treble tone control
- Programmable peak signal detect and limiter
- Digital volume control with soft ramp and zero cross
- On-chip beep generation
- 98 dB dynamic range
- -88 dB THD+N (-75 dB with HP load)
- 24-bit conversion, up to 96 kHz sample rates
- Flexible power down management – chip/block selectable
- CS42L51, 32L-QFN, lead-free assembly
Parametric Specifications
| DACs | 2 |
| ADCs | 2 |
| DAC THD+N (dB) | -86 |
| ADC THD+N (dB) | -88 |
| Sample Rate (kHz) | 4-96 |
| Analog Power Supply (V) | 1.65-2.63 |
| Power Consumption (mW) | 7.05-34.3 |
| Package | 32 QFN |
