Summary
The AK7832A is a stereo audio amplifier with ALC (Automatic Level Control) designed to drive 8/4 dynamic speakers.
AK7832A employs AKM’s original Class-D amp architecture enabling stable audio output with higher efficiency and low power consumption. Also AKM architecture gives the filter free solution which enables “space-saving” layout and BOM cost reduction.
Since AK7832A uses very low EMI design, it provides simple adoption for RF-related applications, such as mobile phones, portable multimedia players and handheld gaming consoles.
The ALC function can normalize the incoming variable music/voice sound to comfortable level automatically.
AK7832A is available in a 24-pin WLCSP package.

Features

1. Class-D Amplifier
   - 2.0W into 4ohm load (THD+N=10%, VDD=5V)
   - 1.2W into 8ohm load (THD+N=10%, VDD=5V)
   - Filter-free for output stage
   - Low EMI noise
   - Supply current with no-input: 3.3mA
   - Shutdown current: 0.1A
   - Selectable gain: +6dB, +9.5dB, +12dB, +15dB
   - Short-circuit and thermal protection
2. Automatic Level Controller
   - ALC Limiter function to protect speaker
   - Fast recovery to keep comfortable sound quality
   - Maximum gain +34.5dB in ALC mode
   - ALC control parameter tunable by I²C interface
   - ALC function Enable/Disable by pin
3. Input Amplifier
   - Analogue signal input for differential or single-ended
   - Pop noise suppressor
4. Control registers
   - Accessible by I²C interface or Pin-setting
   - Selectable stereo mode or monaural mode by Pin-setting
   - Power-down, ALC ON/OFF, Gain select by Pin-setting
   - Tuning gain, ALC parameters by I²C interface
5. Operational voltage and temperature
   - Power supply: 2.5V to 5.0V
   - Power supply for digital interface: 1.65V to 5.0V
   - Operational temperature: -30deg to +85deg
6. Package 24-pin WLCSP (2.5mm 2.5mm )