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PDF ALC221 Data sheet ( Hoja de datos )

Número de pieza ALC221
Descripción HIGH DEFINITION AUDIO CODEC
Fabricantes Realtek Microelectronics 
Logotipo Realtek Microelectronics Logotipo

ALC221 image


1. - HIGH DEFINITION AUDIO CODEC






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ALC221
(P/N: ALC221-GR)
HIGH DEFINITION AUDIO CODEC WITH
MONO CLASS-D SPEAKER AMPLIFIER
DATASHEET
Version 0.65
25th May 2011
Realtek Semiconductor Corp.
No. 2, Innovation Road II, Hsinchu Science Park, Hsinchu 300, Taiwan
Tel.: +886-3-578-0211. Fax: +886-3-577-6047
www.realtek.com

1 page




ALC221 pdf
ALC221
Datasheet
9.1.2.  Threshold Voltage .................................................................................................................................................63 
9.1.3.  Digital Filter Characteristics ...............................................................................................................................64 
9.1.4.  S/PDIF Output Characteristics ............................................................................................................................64 
9.2.  AC CHARACTERISTICS...............................................................................................................................................65 
9.2.1.  Link Reset and Initialization Timing.....................................................................................................................65 
9.2.2.  Link Timing Parameters at the Codec ..................................................................................................................66 
9.2.3.  S/PDIF Output Timing..........................................................................................................................................67 
9.3.  ANALOG PERFORMANCE ............................................................................................................................................68 
9.4.  CLASS-D POWER AMPLIFIER PERFORMANCE .............................................................................................................69 
10.  APPLICATION CIRCUITS .......................................................................................................................................70 
10.1. 
10.2. 
10.3. 
FILTER CONNECTION..................................................................................................................................................70 
POWER AND JACK CONNECTION.................................................................................................................................71 
S/PDIF-OUT CONNECTION .......................................................................................................................................71 
11.  MECHANICAL DIMENSIONS (QFN-48) ....................................................................................................................72 
11.1.  MECHANICAL DIMENSIONS NOTES ............................................................................................................................73 
12.  ORDERING INFORMATION ...................................................................................................................................74 
High Definition Audio Codec with Embedded
Mono Class-D Speaker Amplifier
v
Rev. 0.65

5 Page





ALC221 arduino
ALC221
Datasheet
„ Enhanced power management features for normal operation and standby mode
„ Mono Bridge-Tied Load Class-D amplifier at port-H (MONO-OUT) has 2Watt (rms) power for 4Ω
load speaker
„ Short circuit and over current protections for Class-D amplifier
„ Class D amplifier has high pass filter with selectable Cut-Off frequency to prevent low frequency
signal damaging speaker
„ Class D amplifier output with slew rate and spread spectrum control to reduce EMI radiation
„ Intel low power ECR HDA015-B compliant: supports power status control, jack detection, and
wake-up event in D3 mode
„ 2 GPIOs (General Purpose Input and Output) pins for customized applications
„ EAPD (External Amplifier Power Down) is supported
„ Supports Anti-pop mode when analog power AVDD is on and digital power is off
„ Built in a 5V-to-4.5V LDO to power analog circuitry
„ Power support: 3.3V digital core power; 1.5V~3.3V digital IO power for HDA link; 4.5V~5.5V
analog power; 4.5V~5.5V power stage voltage
„ 48-pin QFN ‘Green’ package
High Definition Audio Codec with Embedded
Mono Class-D Speaker Amplifier
3
Rev. 0.65

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