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WM8751L PDF даташит

Спецификация WM8751L изготовлена ​​​​«Wolfson Microelectronics plc» и имеет функцию, называемую «STEREO DAC FOR PORTABLE AUDIO APPLICATIONS».

Детали детали

Номер произв WM8751L
Описание STEREO DAC FOR PORTABLE AUDIO APPLICATIONS
Производители Wolfson Microelectronics plc
логотип Wolfson Microelectronics plc логотип 

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WM8751L Даташит, Описание, Даташиты
WM8751L
STEREO DAC FOR PORTABLE AUDIO APPLICATIONS
DESCRIPTION
The WM8751L is a low power, high quality stereo DAC with
integrated headphone and loudspeaker amplifiers, designed
to reduce external component requirements in portable digital
audio applications.
The on-chip headphone amplifiers can deliver 40mW into a
16load. Advanced on-chip digital signal processing
performs bass and treble tone control.
The WM8751L can operate as a master or a slave, with
various master clock frequencies including 12 or 24MHz for
USB devices or standard 256fs rates like 12.288MHz and
24.576MHz. Different audio sample rates such as 96kHz,
48kHz, 44.1kHz are generated directly from the master clock
without the need for an external PLL.
The WM8751L operates on supply voltages from 1.8V up to
3.6V, although the digital core can operate on a separate
supply down to 1.42V, saving power. Different sections of the
chip can also be powered down under software control.
The WM8751L is supplied in a very small and thin 5x5mm
QFN package, ideal for use in hand-held and portable
systems.
FEATURES
DAC SNR 98dB, THD -95dB (‘A’ weighted @ 48kHz, 3.3V)
On-chip 400mW BTL Speaker Driver (mono)
On-chip Headphone Driver
° 40mW output power on 16/ 3.3V
° THD –80dB at 20mW, SNR 90dB with 16load
Stereo and Mono Line-in mix into DAC output
Separately Mixed Stereo and Mono Outputs
Digital Tone Control and Bass Boost
Low Power
Low Supply Voltages
° Analogue 1.8V to 3.6V
° Digital core: 1.42V to 3.6V
° Digital I/O: 1.42V to 3.6V
256fs / 384fs or USB master clock rates: 12MHz, 24MHz
Audio sample rates: 8, 11.025, 12, 16, 22.05, 24, 32, 44.1,
48, 88.2, 96kHz generated internally from master clock
32-pin QFN package, 5x5x0.9mm size, 0.5mm lead pitch
APPLICATIONS
Digital Audio Player
MP3 Phone
Minidisc Player
BLOCK DIAGRAM
CSB
SDIN
SCLK
MODE
BCLK
DACLRC
DACDAT
MCLK
DBVDD DCVDD DGND
HPGND HPVDD
CONTROL
INTERFACE
DIGITAL
AUDIO
INTERFACE
W
WM8751L
DIFF. IN
LEFT
LD2LO MIXER
LI2LO
DIGITAL
FILTERS
DAC
RD2LO
MONO
MIXER
LD2MO
MI2LO
LI2MO
TONE
CONTROL
DAC
RD2MO
RIGHT
LD2RO MIXER
RI2MO
MI2RO
RD2RO
RI2RO
VREF
50K 50K
MONOOUT
ROUT1
VREF
M
U
X
-1 OUT3
LOUT1VOL
LOUT1
MONOVOL
MONOOUT
ROUT1VOL
ROUT1
LOUT2
LOUT2VOL
-1 ROUT2
INV
ROUT2
ROUT2VOL
Loudspeaker
L - (-R)
= L+R
HPDETECT
WOLFSON MICROELECTRONICS PLC
www.wolfsonmicro.com
Product Preview, May 2003, Rev 1.42
Copyright 2003 Wolfson Microelectronics Ltd.









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WM8751L Даташит, Описание, Даташиты
WM8751L
Product Preview
PIN CONFIGURATION
24 23 22 21 20 19 18 17
MONOIN- 25
MONOIN+ 26
LINEINR 27
LINEINL 28
MODE 29
CSB 30
SDIN 31
SCLK 32
16 LOUT2
15 ROUT2
14 HPGND
13 LOUT1
12 ROUT1
11 OUT3
10 MONOOUT
9 AGND2
12345678
ORDERING INFORMATION
ORDER CODE
WM8751LEFL
TEMPERATURE
RANGE
-25°C to +85°C
PACKAGE
32-pin QFN
(5x5x0.9mm)
w
Product Preview Rev 1.42 May 2003
2









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WM8751L Даташит, Описание, Даташиты
Product Preview
PIN DESCRIPTION
PIN #
1
2
3
4
5
6
7
8
9
NAME
MCLK
DCVDD
DBVDD
DGND
BCLK
DACDAT
DACLRC
NC
AGND2
10 MONOOUT
11 OUT3
12 ROUT1
13 LOUT1
14 HPGND
15 ROUT2
16 LOUT2
17 HPVDD
18 AVDD
19 AGND
20 VREF
21 VMID
22 NC
23 HPDETECT
24 NC
25 MONOIN-
26 MONOIN+
27 LINEINR
28 LINEINL
29 MODE
30 CSB
31 SDIN
32 SCLK
WM8751L
TYPE
Digital Input
Supply
Supply
Supply
Digital Input / Output
Digital Input
Digital Input / Output
No Connect
Supply
Analogue Output
Analogue Output
Analogue Output
Analogue Output
Supply
Analogue Output
Analogue Output
Supply
Supply
Supply
Analogue Output
Analogue Output
No Connect
Logic Input
No Connect
Analogue Input
Analogue Input
Analogue Input
Analogue Input
Digital Input
Digital Input
Digital Input/Output
Digital Input
DESCRIPTION
Master Clock
Digital Core Supply
Digital Buffer (I/O) Supply
Digital Ground (return path for both DCVDD and DBVDD)
Audio Interface Bit Clock
DAC Digital Audio Data
Audio Interface Left / Right Clock
No Internal Connection
Internally connected to AGND. Leave this pin floating or connect to
AGND.
Mono Output
Output 3 (can be used as Headphone Pseudo Ground)
Right Output 1 (Line or Headphone)
Left Output 1 (Line or Headphone)
Supply for Analogue Output Drivers (LOUT1/2, ROUT1/2)
Right Output 1 (Line or Headphone or Speaker)
Left Output 1 (Line or Headphone or Speaker)
Supply for Analogue Output Drivers (LOUT1/2, ROUT1/2, MONOUT)
Analogue Supply
Analogue Ground (return path for AVDD)
Reference Voltage Decoupling Capacitor
Midrail Voltage Decoupling Capacitor
No Internal Connection
Headphone / Speaker switch (referred to AVDD)
No Internal Connection
Negative end of MONOIN+, for differential mono signals
Analogue Line-in to mixers (mono channel)
Analogue Line-in to mixers (right channel)
Analogue Line-in to mixers (left channel)
Control Interface Selection
Chip Select / Device Address Selection
Control Interface Data Input / 2-wire Acknowledge output
Control Interface Clock Input
w
Product Preview Rev 1.42 May 2003
3










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Номер в каталогеОписаниеПроизводители
WM8751LSTEREO DAC FOR PORTABLE AUDIO APPLICATIONSWolfson Microelectronics plc
Wolfson Microelectronics plc

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