Datasheet > AS3543

AS3543

更新时间： 2024-10-01 06:37:47

品牌	Logo	应用领域
艾迈斯 - AMSCO		解码器编解码器
页数	文件大小	规格书
4页	529K
描述
High End Stereo Audio Codec with System PMU

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技术参数
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AS3543 技术参数

生命周期：	Obsolete	Reach Compliance Code：	unknown
风险等级：	5.7	Base Number Matches：	1

AS3543 数据手册

Preliminary Product Brief

AS3543

High End Stereo Audio Codec with System PMU

General Description

Key Features

The AS3543 is an ultra low power stereo audio codec

and is designed for Portable Digital Audio Applications.

Audio

It allows high-end quality playback with up to 100dBA

SNR and recording in FM quality. With one microphone

(including pre-amplifier and supply for an electret micro-

phone) and two line inputs, it allows connecting a variety

of audio inputs. The different audio signals can be mixed

via a 6-channel mixer and fed to either a headphone out-

put for 16 /32 headsets or a line output. Both outputs

have a ground noise cancellation to use it e.g. in car

docking stations. The audio outputs have also an auto

fading implemented which performs the fade-in, fade-

out as well as the transition between specific volume

levels automatically with an selectable timing.

Audio power consumption:

ꢀ - 5mW: 96dB DAC to Headphone @ 1.8V, 32Ω

ꢀ - 7mW: 100dB DAC to Headphone @ 2.9V, 32Ω

Sigma Delta Converters

ꢀ DAC

- 98dB SNR ('A' weighted) @ 1.8V

- 102dB SNR ('A' weighted) @ 2.9V

ꢀ ADC

- 83dB SNR ('A' weighted) @ 1.8V

ꢀ Sampling Frequency

Further the device offers advanced power management

functions. All necessary ICs and peripherals in a Digital

Audio Player are supplied by the AS3543. It features 2

DCDC converters for core and memory/periphery supply

as well as 4 LDOs. Both DCDC converter feature DVM

(dynamic voltage management) with an selectable tim-

ing for the voltage stepping. The different regulated sup-

ply voltages are programmable via the serial control

interface.

- DAC: 8-48kHz

- ADC: 8-24kHz

High Efficiency Headphone Amplifier

ꢀ volume control via serial interface

ꢀ 32 steps @1.5dB and MUTE

ꢀ 2x12mW @16 driver capability@ 1.8V supply

ꢀ THD -74dB @16Ω; 1.8V

The step-up converter for the backlight can operate up

to 25V (with an external transistor even higher) in volt-

age and current control mode. An internal voltage pro-

tection is limiting the output voltage in the case of

external component failures. 2 high voltage current sinks

can be used to operate two , if needed also unbalanced,

LED strings. An automatic dimming function allows a

logarithmic on/off of the backlight with selectable timing.

ꢀ 2x40mW @16 driver capability@ 2.9V supply

ꢀ THD -77dB @16Ω; 2.9V

ꢀ headphone and over-current detection

ꢀ phantom ground eliminates large capacitors

ꢀ ground noise cancellation

AS3543 also contains a Li-Ion battery charger with con-

stant current, constant voltage and trickle charging. The

maximum charging current is 460mA. An integrated bat-

tery switch is separating the battery during charging or

whenever an external power supply is present. With this

switch it is also possible to operate with no or deeply dis-

charged batteries.

Line Output

ꢀ volume control via serial interface

ꢀ 32 steps @1.5dB and MUTE

ꢀ 0.6Vp @10kΩ

ꢀ ground noise cancellation

The AS3543 has an on-chip, phase locked loop (PLL)

which generates the needed internal CODEC master

clock. I2S Frame and shift-clock have to be applied from

the processor for playback and recording.

Further the AS3543 has an independent 32kHz real time

clock (RTC) on chip which allows a complete power

down of the system CPU while only consuming less than

1µA. An internal switch automatically switches between

the RTC backup-battery and main battery supply.

The single supply voltage may vary from 2.7V (2.4V) to

5.5V.

www.austriamicrosystems.com

Revision 0.12

1 - 4

12 3 4

中文翻译

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与AS3543相关器件

型号	品牌	获取价格	描述	数据表
AS3543_11	AMSCO	获取价格	High End Stereo Audio Codec wi th System PMU
AS3543-ECTP	AMSCO	获取价格	High End Stereo Audio Codec wi th System PMU
AS355R025	AMETHERM	获取价格	Resistance @ 25°c
AS358	BCDSEMI	获取价格	LOW POWER DUAL OPERATIONAL AMPLIFIERS
AS358	DIODES	获取价格	LOW POWER DUAL OPERATIONAL AMPLIFIERS
AS358,358A	BCDSEMI	获取价格	LOW POWER DUAL OPERATIONAL AMPLIFIERS
AS358_13	BCDSEMI	获取价格	LOW POWER DUAL OPERATIONAL AMPLIFIERS
AS358_18	DIODES	获取价格	LOW POWER DUAL OPERATIONAL AMPLIFIERS
AS358-62	ETC	获取价格	SPDT RF Reflective Switch
AS3588A	AMSCO	获取价格	DIGITAL TIME/SPACE CROSSPOINT SWITCH

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