DA7212 Datasheet, PDF (1/129 Pages) Dialog Semiconductor – Ultra-low power stereo codec

DA7212
Ultra-low power stereo codec
Company confidential
General description
The DA7212 is an ultra-low power audio codec targeting portable audio devices. The input paths
support stereo FM line input and up to four analogue (or two analogue and two digital) microphones
with two independent microphone biases. Comprehensive analogue mixing and bypass paths to the
output drivers are available.
The headphone output is true-ground Class G with integrated charge pump. There is also a
differential Class AB speaker driver that can serve as a mono lineout.
Digital audio transfer to/from the external processor is via a bi-directional digital audio interface that
supports all common sample rates and formats. The device may be operated in slave or master
modes using the internal PLL which may be bypassed if not required.
To fully optimise each customer application, a range of built in filtering, equalisation and audio
enhancements are available. These are accessible by the processor over the I2C serial interface.
Key features
■ 100 dB SNR stereo audio playback into 16 Ω ■ Built-in 5-band equaliser, ALC and noise-gate
headphones
functions
■ 3.1 mW power consumption for stereo DAC to ■ Built-in beep generator
headphone playback
■ Integrated system controller to eliminate pops
■ 1.2 W mono speaker driver
and clicks
■ 650 µW mono voice record
■ Minimised external component count
■ Stereo digital microphone support
■ 34-ball WL-CSP (4.54 mm x 1.66 mm)
■ Supports up to four analogue microphones
package
■ Two low-noise microphone-bias outputs
■ Staggered 0.5 mm pitch for easy PCB routing
allowing low cost manufacture
■ Low-power PLL provides system clocking and
audio sample rate flexibility
Applications
■ Personal Media Players
■ Audio headphone/headsets
■ Wearables
■ Embedded applications
■ Arduino compatible development systems
Datasheet
Figure 1: The DA7212 chip
Revision 3c
1 of 129
24-Nov-2015
© 2015 Dialog Semiconductor