DA7211 datasheet(2/105 Pages) DIALOG

2 / 105 page

DA7211

Ultra-low power stereo codec

Company confidential

Datasheet

Revision 3e

15-Oct-2015

CFR0011-120-00 Rev 5

2 of 105

Contents

General description ............................................................................................................................. 1

Key features ......................................................................................................................................... 1

Applications ......................................................................................................................................... 1

Contents ............................................................................................................................................... 2

Figures.................................................................................................................................................. 3

Tables ................................................................................................................................................... 4

Terms and definitions ................................................................................................................... 8

Block diagram................................................................................................................................ 9

Pinout ........................................................................................................................................... 10

3.1

The 36-ball DA7211 device................................................................................................. 12

Absolute maximum ratings ........................................................................................................ 13

Recommended operating conditions ........................................................................................ 13

Electrical characteristics ............................................................................................................ 14

Timing characteristics ................................................................................................................ 23

7.1

Digital audio interface timing - I2S/DSP (in master/slave mode) ........................................ 23

7.2

Digital audio control timing - 2-wire control timing .............................................................. 24

Functional description ................................................................................................................ 26

8.1

Stereo codec ....................................................................................................................... 26

8.1.1

Input signal chain................................................................................................. 26

8.1.2

Microphone inputs ............................................................................................... 27

8.1.3

Auxiliary inputs..................................................................................................... 27

8.1.4

Stereo audio ADC................................................................................................ 28

8.1.5

Automatic level control (ALC) .............................................................................. 30

8.1.6

Noise gate............................................................................................................ 32

8.2

Output signal chain ............................................................................................................. 32

8.2.1

Stereo audio DAC................................................................................................ 32

8.2.2

Soft mute ............................................................................................................. 33

8.2.3

Output mixer and line-out amplifier...................................................................... 34

8.2.4

Headphone amplifier............................................................................................ 35

8.2.5

Ambient noise suppression ................................................................................. 37

8.2.6

Digital signal processing engine .......................................................................... 37

8.3

Programming the general purpose filter.............................................................................. 39

8.4

Hi-Fi recording..................................................................................................................... 40

8.4.1

5-band equaliser for recording path..................................................................... 40

8.4.2

Digital audio processing for the record path ........................................................ 42

8.5

Hi-Fi playback ..................................................................................................................... 43

8.5.1

5-band equaliser for playback path ..................................................................... 43

8.5.2

Digital audio processing for playback path .......................................................... 44

8.6

Telephone/Bluetooth voice recording/playback at low sample rates .................................. 45

8.6.1

Voice filtering for recording at low sample rates.................................................. 45

8.6.2

Voice filtering for playback at low sample rates .................................................. 46

8.6.3

Digital audio processing for phone applications .................................................. 48

INTERFACES................................................................................................................................ 49

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