Simplified Block Diagram
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- 5.6mW Power Comsumption (DAC to HP at 97dB DR)
- 101dB DR Stereo DAC (8kHz < fS < 96kHz)
- 93dB DR Stereo ADC (8kHz < fS < 96kHz)
- Stereo Low EMI Class D Amplifiers
- 950mW/Channel (8Ω, VSPKVDD_ = 4.2V)
- Efficient Class H Headphone Amplifier
- Differential Receiver Amplifier/Stereo Line Outputs
- 2 Stereo Single-Ended/Mono Differential Line Inputs
- 3 Differential Microphone Inputs
- FlexSound Technology
- 5-Band Parametric EQ
- Automatic Level Control (ALC)
- Excursion Limiter
- Speaker Power Limiter
- Speaker Distortion Limiter
- Microphone Automatic Gain Control and Noise Gate
- Dual I²S/PCM/TDM Digital Audio Interfaces
- Asynchronous Digital Mixing
- Supports Master Clock Frequencies from 10MHz to 60MHz
- RF Immune Analog Inputs and Outputs
- Extensive Click-and-Pop Reduction Circuitry
- Available in 63-Bump WLP Package (3.80mm x 3.30mm, 0.4mm Pitch)
Class D speaker amplifiers provide efficient amplification for two speakers. Low radiated emissions enable completely filterless operation. Integrated bypass switches optionally connect an external amplifier to the transducer when the Class D amplifiers are disabled.
The IC features a stereo Class H headphone amplifier that utilizes a dual-mode charge pump to maximize efficiency while outputting a ground referenced signal that does not require output coupling capacitors.
The IC also features a mono differential amplifier that can also be configured as a stereo line output.
Three differential analog microphone inputs are available as well as support for two PDM digital microphones. Integrated switches allow microphone signals to be routed out to external devices. Two flexible single-ended or differential line inputs may be connected to an FM radio or other sources.
Integrated FlexSound™ technology improves loudspeaker performance by optimizing the signal level and frequency response while limiting the maximum distortion and power at the output to prevent speaker damage. Automatic gain control (AGC) and a noise gate optimize the signal level of microphone input signals to make best use of the ADC dynamic range.
The device is fully specified over the -40°C to +85°C extended temperature range.