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參數資料
| 型號： | WM8750L |
| 廠商： | Wolfson Microelectronics |
| 英文描述： | BOX 5.63X3.25X1.51 9V BLK |
| 中文描述： | 立體聲編解碼器的便攜式音頻應用 |
| 文件頁數： | 1/56頁 |
| 文件大?。?/td> | 661K |
| 代理商： | WM8750L |
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WM8750L
Stereo CODEC for Portable Audio Applications
WOLFSON MICROELECTRONICS plc
www.wolfsonmicro.com
Product Preview, May 2003, Rev 1.77
Copyright
2003 Wolfson Microelectronics plc
DESCRIPTION
The WM8750L is a low power, high quality stereo codec
designed for portable digital audio applications.
The device integrates complete interfaces to stereo or mono
microphones and a stereo headphone. External component
requirements are drastically reduced as no separate
microphone
or
headphone
Advanced on-chip digital signal processing performs
graphic equaliser, 3-D sound enhancement and automatic
level control for the microphone or line input.
The WM8750L can operate as a master or a slave, with
various master clock frequencies including 12 or 24MHz for
USB devices, or standard 256f
s
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 WM8750L operates at supply voltages down to 1.8V,
although the digital core can operate at voltages down to
1.42V to save power, and the maximum for all supplies is
3.6 Volts. Different sections of the chip can also be powered
down under software control.
The WM8750L is supplied in a very small and thin 5x5mm
QFN package, ideal for use in hand-held and portable
systems.
amplifiers
are
required.
FEATURES
DAC SNR 98dB (‘A’ weighted), THD -95B at 48kHz, 3.3V
ADC SNR 95dB (‘A’ weighted), THD -90dB at 48kHz, 3.3V
Complete Stereo / Mono Microphone Interface
- Programmable ALC / Noise Gate
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 16
load
-
No DC blocking capacitors required (capless mode)
Separately mixed mono output
Digital Graphic Equaliser
Low Power
-
7mW stereo playback (1.8V / 1.5V supplies)
-
14mW record & playback (1.8V / 1.5V supplies)
Low Supply Voltages
-
Analogue 1.8V to 3.6V
-
Digital core: 1.42V to 3.6V
-
Digital I/O: 1.8V to 3.6V
256fs / 384fs or USB master clock rates: 12MHz, 24MHz
Audio sample rates: 8, 11.025, 16, 22.05, 24, 32, 44.1, 48,
88.2, 96kHz generated internally from master clock
5x5x0.9mm QFN package
APPLICATIONS
MP3 Player / Recorder
AAC/WMA/Multi-Format Player / Recorder
Minidisc Player / Recorder
Portable Digital Music Systems
BLOCK DIAGRAM
LINSEL
ANALOGUE
MONO MIX
CONTROL
INTERFACE
C
S
S
M
MICBIAS
WM8750L
DCVDD
DBVDD
DGND
LMIXSEL
DAC
ROUT1VOL
LOUT1VOL
MONOVOL
LOUT1
ROUT1
MONOOUT
(phone TX)
LOUT2
ROUT2
V
A
A
V
50K
50K
HPVDD
HPGND
DAC
AUDIO
INTERFACE
A
A
B
M
D
D
DIGITAL
FILTERS
VOLUME
DIGITAL
MONO MIX
3D
ENHANCE
ADC
ADC
DIGITAL
FILTERS
GRAPHIC
EQUALISER
BASS
BOOST
CLOCK
CIRCUITRY
LINPUT3
LINPUT2
LINPUT1
LI2LO
RI2LO
LI2RO
RI2RO
LI2MO
RI2MO
LD2LO
RD2LO
LD2MO
RD2MO
LD2RO
RD2RO
LEFT
MIXER
RIGHT
MIXER
MONO
MIXER
ROUT2VOL
LOUT2VOL
-1
ROUT2
INV
OUT3
VREF
ROUT1
MONOOUT
-1
L - (-R)
= L+R
PGA
+ MIC
BOOST
M
U
X
M
U
X
DIFF.
INPUT
L1-R1 OR
L2-R2
DC MEASUREMENT
RINSEL
RMIXSEL
RINPUT3/
HPDETECT
RINPUT2
RINPUT1
PGA
+ MIC
BOOST
M
U
X
M
U
X
DC MEASUREMENT
M
U
X
OUT3SW
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相關代理商/技術參數 |
參數描述 |
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| WM8750L_05 | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:Stereo CODEC for Portable Audio Applications |
| WM8750LEFL | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:STEREO CODEC FOR PORTABLE AUDIO APPLICATIONS |
| WM8750LEFL/R | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:STEREO CODEC FOR PORTABLE AUDIO APPLICATIONS |
| WM8750LSEFL | 功能描述:接口—CODEC Stereo Codec with H/P Spkr RoHS:否 制造商:Texas Instruments 類型: 分辨率: 轉換速率:48 kSPs 接口類型:I2C ADC 數量:2 DAC 數量:4 工作電源電壓:1.8 V, 2.1 V, 2.3 V to 5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:DSBGA-81 封裝:Reel |
| WM8750LSEFL/R | 功能描述:接口—CODEC Stereo Codec with H/P Spkr RoHS:否 制造商:Texas Instruments 類型: 分辨率: 轉換速率:48 kSPs 接口類型:I2C ADC 數量:2 DAC 數量:4 工作電源電壓:1.8 V, 2.1 V, 2.3 V to 5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:DSBGA-81 封裝:Reel |
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