DA7211 Datasheet, PDF (1/105 Pages) Dialog Semiconductor – Ultra-low power stereo codec

DA7211
Ultra-low power stereo codec
Company confidential
General description
DA7211 features a high fidelity and powerful 72 mW per channel headphone amplifier. The device
may be operated from a single 1.8 V supply. Total device consumption is only 2.5 mW which helps
extend music playback time for battery operated equipment.
The fully integrated fractional PLL has been designed to use minimal power while supporting a wide
range of input and output frequencies. Internal suppression circuits help maintain audio
synchronisation in the presence of system noise on the external clock.
Six analogue input pins allow multiple audio sources to be internally mixed, eliminating the need for
external switches. Both single-ended and fully-differential line and microphone inputs are supported
with built-in variable gain amplifiers to optimise the dynamic range prior to digitisation. This provides
hardware support for ambient noise cancellation.
The DA7211 provides two volume-controlled differential/single-ended stereo line-out drivers and
ground-centred stereo amplifiers to directly drive standard 3-wire 16 Ω headphones. For example the
dc coupled, dedicated pop-free drivers may be connected simultaneously to stereo headphones,
stereo speakers and a mono line out without external switches.
All filtering functions are performed digitally including 5-band EQ and a digital input AGC with
programmable attack and decay parameters. A configurable signal processing engine allows various
audio enhancements and effects such as acoustic filtering, transducer equalisation, wind noise
suppression and 3D sound
The multi-slot I2S/PCM interface supports all common sample rates between 8 and 96 kHz in master
or slave mode operation.
Key features
■ Stereo multi-bit Delta Sigma DAC with SNR ■ Audio serial data bus supports I2S,
100 dB ('A' weighted @ 48 kHz)
left/right justified, DSP and TDM modes
■ Stereo multi-bit Delta Sigma ADC with SNR ■ Stereo or mono differential microphone
96 dB ('A' weighted @ 48 kHz)
interface
■ Ultra low-power stereo headphone driver with ■ Programmable ultra-low noise bias supply for
□ Stereo DAC to HP playback power:
electret microphones
2.5 mW
■ Volume controlled stereo auxiliary inputs and
□ 2x58 mW output power (16 Ω)
outputs supporting FM Radio and fixed gain
speaker amplifiers
□ ‘Capless’ output via GND centred signals _{■ Multi-mode audio routing and mixers}
□ Four level charge pump with continuous
tracking of audio signal (Class G)
■ Pop & click suppression circuitry
□ Short circuit protection
■ Support of 8, 11.025, 12, 16, 22.05, 24, 32,
44.1, 48 and 96 kHz sample rates
■ ASSP DSP filter engine for digital audio
enhancements (acoustic filtering, wind noise
suppression, 5-band equaliser, 3D sound,
automatic gain control)
■ On-chip PLL with signal shaper and audio
Sample Rate Matching
■ Supports supply from single voltage
(1.8/2.5 V)
■ 2-wire software control interface
■ Extensive modular power control
■ Package: 36 bump WL-CSP 3x3 – 0.5 mm
pitch
Applications
■ Personal media players
■ Portable consumer devices
■ Music handsets
■ Personal navigation devices
Datasheet
CFR0011-120-00 Rev 5
Revision 3e
1 of 105
15-Oct-2015
© 2015 Dialog Semiconductor