SSM4567ACBZ-R7

SSM4567ACBZ-R7 is a digital input Class-D power amplifier. It includes an integrated boost converter, allowing higher output power than with a normal battery supply. This means that maximum output power is constant across the battery voltage range. The SSM4567 is ideal for power sensitive applications where system noise can corrupt the small analog signal sent to the amplifier, such as mobile phones, tablets and portable media players. The SSM4567 combines an audio digital-to-analog converter (DAC), a power amplifier, and PDM or PCM (I2S/TDM) digital audio interfaces on a single chip. Using the SSM4567, audio can be transmitted digitally to the audio amplifier, significantly reducing the effect of noise sources on the transmitted audio and eliminates the need for input coupling capacitors.

• Filterless Class-D amplifier w/ spread-spectrum Σ-Δ modulation w/ integrated boost regulator (5.1V)
• Digitized output of output voltage, output current, and VBAT supply voltage
• Integrated boost regulator, multiple serial data formats (PDM I/O, I2S or left justified server)
• Multichip I2S with support for up to 4 chips on one I2S bus
• 8kHz to 192kHz PCM sample rates, 2.048 to 6.14MHz PDM input sample rates
• Configurable via I2C control, TDM control, or PDM patterns
• 89.7% typ system efficiency at PO = 1W, VBAT = 3.6V, RL = 8ohm
• 0.031% typ THD+N at f=1kHz, PO=1W, RL=8ohm, 0.025% typ O/P voltage noise at f=1kHz, PO=0.5W, RL=8ohm
• 104dB typ SNR, 300kHz typ average switching frequency, supply voltage range from 2.5 to 5.2V
• 19-ball WLCSP package, temperature range from -40°C to +85°C