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AS3543 PDF даташит

Спецификация AS3543 изготовлена ​​​​«austriamicrosystems AG» и имеет функцию, называемую «High End Stereo Audio Codec».

Детали детали

Номер произв AS3543
Описание High End Stereo Audio Codec
Производители austriamicrosystems AG
логотип austriamicrosystems AG логотип 

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AS3543 Даташит, Описание, Даташиты
AS3543
High End Stereo Audio Codec with System PMU
Data Sheet
1 General Description
The AS3543 is an ultra low power stereo audio codec
and is designed for Portable Digital Audio Applications.
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.
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.
The step-up converter for the backlight can operate up
to 15V (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.
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.
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 to 5.5V.
2 Key Features
Audio
Audio power consumption:
- 5mW: 96dB DAC to Headphone @ 1.8V, 32
- 7mW: 100dB DAC to Headphone @ 2.9V, 32
Sigma Delta Converters
DAC
- 98dB SNR ('A' weighted) @ 1.7V
- 102dB SNR ('A' weighted) @ 2.9V
ADC
- 85dB SNR ('A' weighted) @ 1.7V
Sampling Frequency
- DAC: 8-96kHz
- ADC: 8-24kHz
High Efficiency Headphone Amplifier
volume control via serial interface
32 steps @1.5dB and MUTE
2x12mW @16driver capability@ 1.8V supply
THD -74dB @16; 1.8V
2x40mW @16driver capability@ 3.6V supply
THD -77dB @16; 3.6V
headphone and over-current detection
phantom ground eliminates large capacitors
ground noise cancellation
Line Output
volume control via serial interface
32 steps @1.5dB and MUTE
0.6Vp @10k, 1.8V
ground noise cancellation
www.austriamicrosystems.com
Revision 1.11
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AS3543 Даташит, Описание, Даташиты
AS3543 3v2
Data Sheet - Applications
Microphone Input
3 gain pre-setting (30dB/36dB/42dB) and AGC
32 gain steps @1.5dB and MUTE
supply for electret microphone
microphone detection
remote control by switch
2 Line Inputs
volume control via serial interface
32 steps @1.5dB and MUTE
stereo or 2x mono
Audio Mixer
8 channel input/output mixer with AGC
mixes line inputs, microphone and ADC with DAC
left and right channels independent
Power Management
Voltage Generation
step down for CPU core (0.61V-3.35V, 250mA)
step down for peripheral (0.61V-3.35V, 250mA)
LDO1 for AFE supply (1.7V (1.65-3.2V), 50mA)
LDO2 for AFE supply (2.7V (2.3-3.5V), 200mA)
LDO3 for peripherals (1.2V-3.5V, 100/200mA)
LDO4 for peripherals (1.2V-3.5V, 100/200mA)
VBUS comparator
separate input for LDO3
power supply supervision & hibernation modes
5sec and 10sec emergency shut-down
Backlight Driver
step up for backlight (15V (25V))
current control mode (1.2-37.2mA)
voltage control mode
2 HV current sinks
automatic dimming
over-voltage protection
Battery Charger
automatic trickle charge (55mA)
prog. constant current charging (55-460mA)
prog. constant voltage charging (3.9V-4.25V)
current limitation for USB mode
integrated battery switch
General
Supervisor
automatic battery monitoring with interrupt genera-
tion and selectable warning level
automatic temperature monitoring with interrupt
generation and selectable warning and shutdown
levels
Real Time Clock
ultra low power 32kHz oscillator
32bit RTC sec counter, 96 days auto wake-up
selectable interrupt (seconds or minutes)
128bit free SRAM for random settings
32kHz clock output to peripheral
voltage generation
trim able oscillator
<1uA total power consumption
Auxiliary Oscillator (system clock generation)
low power 12-24MHz oscillator
clock output
General Purpose ADC
10bit resolution
22 inputs analog multiplexer
Interfaces
2 wire serial control interface
reset pin with selectable delay, power good pin
64bit unique ID (OTP)
26 different interrupts
Package CTBGA68 [6.0x6.0x1.1mm] 0.5mm pitch
3 Applications
Portable Digital Audio/Video Player and Recorder
PDA, Smartphone
www.austriamicrosystems.com
Revision 1.11
2 - 91









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AS3543 Даташит, Описание, Даташиты
AS3543 3v2
Data Sheet - Applications
Figure 1. Block Diagram
www.austriamicrosystems.com
Revision 1.11
3 - 91










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Номер в каталогеОписаниеПроизводители
AS3543High End Stereo Audio Codecaustriamicrosystems AG
austriamicrosystems AG

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