|
|
PDF WM8750L Data sheet ( Hoja de datos )
| Número de pieza | WM8750L | |
| Descripción | STEREO CODEC FOR PORTABLE AUDIO APPLICATIONS | |
| Fabricantes | Wolfson Microelectronics plc | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de WM8750L (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
|
No Preview Available !
WM8750L
Stereo CODEC for Portable Audio Applications
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 amplifiers are required.
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 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 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.
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 16Ω / 3.3V
- THD –80dB at 20mW, SNR 90dB with 16Ω 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
LINPUT1
LINPUT2
LINPUT3
RINPUT3/
HPDETECT
RINPUT2
RINPUT1
MICBIAS
DIFF.
INPUT
L1-R1 OR
L2-R2
M LMIXSEL
U
X
DC MEASUREMENT
M PGA
U + MIC
X BOOST
LINSEL
ANALOGUE
MONO MIX
RINSEL
M PGA
U + MIC
X BOOST
DC MEASUREMENT
M
U
X RMIXSEL
50K 50K
ÅDGND
DCVDD
WM8750L
DBVDD
LEFT
LD2LO MIXER
LI2LO
ADC
ADC
DIGITAL
FILTERS
VOLUME
DIGITAL
MONO MIX
3D
ENHANCE
DIGITAL
FILTERS
GRAPHIC
EQUALISER
BASS
BOOST
DAC
DAC
RD2LO
MONO
LD2MO MIXER
RI2LO
LI2MO
RD2MO
RIGHT
LD2RO MIXER
RI2MO
LI2RO
RD2RO
RI2RO
AUDIO
INTERFACE
CLOCK
CIRCUITRY
CONTROL
INTERFACE
HPGND HPVDD
VREF
ROUT1
MONOOUT
OUT3SW
M
U
X
-1
OUT3
LOUT1VOL
LOUT1
MONOVOL
MONOOUT
(phone TX)
ROUT1VOL
ROUT1
LOUT2VOL
-1 ROUT2
INV
ROUT2VOL
LOUT2
ROUT2
L - (-R)
= L+R
WOLFSON MICROELECTRONICS plc
www.wolfsonmicro.com
Product Preview, May 2003, Rev 1.77
Copyright 2003 Wolfson Microelectronics plc
1 page  
Product Preview
WM8750L
ABSOLUTE MAXIMUM RATINGS
Absolute Maximum Ratings are stress ratings only. Permanent damage to the device may be caused by continuously
operating at or beyond these limits. Device functional operating limits and guaranteed performance specifications are given
under Electrical Characteristics at the test conditions specified.
ESD Sensitive Device. This device is manufactured on a CMOS process. It is therefore generically susceptible
to damage from excessive static voltages. Proper ESD precautions must be taken during handling and storage
of this device.
The WM8750L has been classified as MSL1, which has an unlimited floor life at <30oC / 85% Relative Humidity and therefore will
not be supplied in moisture barrier bags.
CONDITION
Supply voltages
Voltage range digital inputs
Voltage range analogue inputs
Operating temperature range, TA
Storage temperature prior to soldering
Storage temperature after soldering
Package body temperature (soldering 10 seconds)
Package body temperature (soldering 2 minutes)
MIN MAX
-0.3V
+3.63V
DGND -0.3V
DBVDD +0.3V
AGND -0.3V
AVDD +0.3V
-25°C
+85°C
30°C max / 85% RH max
-65°C
+150°C
+260°C
+183°C
Notes
1. Analogue and digital grounds must always be within 0.3V of each other.
2. All digital and analogue supplies are completely independent from each other.
3. DCVDD must be less than or equal to AVDD & DBVDD.
RECOMMENDED OPERATION CONDITIONS
PARAMETER
Digital supply range (Core)
Digital supply range (Buffer)
Analogue supplies range
Ground
SYMBOL
DCVDD
DBVDD
AVDD, HPVDD
DGND,AGND, HPGND
MIN
1.42
1.8
1.8
TYP
MAX
UNIT
2.0 3.6
V
2.0 3.6
V
2.0 3.6
V
0V
PP Rev 1.77 May 2003
5
5 Page 
Product Preview
WM8750L
POWER CONSUMPTION
The power consumption of the WM8750L depends on the following factors.
• Supply voltages: Reducing the supply voltages also reduces supply currents, and therefore results in significant power
savings, especially in the digital sections of the WM8750L.
• Operating mode: Significant power savings can be achieved by always disabling parts of the WM8750L that are not
used (e.g. mic pre-amps, unused outputs, DAC, ADC, etc.)
Control Register
R25 (19h)
R26 (1Ah)
R24 R23 Other settings
AVDD
DCVDD DBVDD HPVDD Tot. Power
Bit
V I (mA) V I (mA) V I (mA) V I (mA)
OFF 00 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 11 Clocks stopped 3.3 0.0016 3.3 0.0190 3.3 0.0080 3.3 0.0002
01 2.5 0.0008 2.5 0.0170 2.5 0.0050 2.5 0.0000
00 1.8 0.0005 1.5 0.0120 1.5 0.0029 1.8 0.0000
Standby
10 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 11 Interface Stopped 3.3 0.3900 3.3 0.0390 3.3 0.0080 3.3 0.0000
(500 KOhm VMID string)
01 2.5 0.2880 2.5 0.0170 2.5 0.0050 2.5 0.0000
00 1.8 0.1970 1.5 0.0120 1.5 0.0030 1.8 0.0000
Playback to Line-out
01 1 0 0 0 0 0 1 1 0 0 1 1 0 0 0 0 11
3.3 3.7310 3.3 5.6600 3.3 0.3000 3.3 0.2370
01 2.5 2.6940 2.5 3.8600 2.5 0.2200 2.5 0.2100
00 1.8 1.8820 1.5 2.1400 1.5 0.1240 1.8 0.1500
Playback to Line-out
01 1 0 0 0 0 0 1 1 1 1 0 0 0 0 0 1 11
3.3 3.5170 3.3 4.6470 3.3 0.3000 3.3 0.9500
(64x oversampling mode)
01 2.5 2.5760 2.5 3.2030 2.5 0.2200 2.5 0.6480
00 1.8 1.7760 1.5 1.7590 1.5 0.1240 1.8 0.4130
Playback to 16 Ohm Headphone 01 1 0 0 0 0 0 1 1 1 1 0 0 0 0 0 0 11
3.3 3.7260 3.3 5.6700 3.3 0.3000 3.3 0.9530
01 2.5 2.7530 2.5 3.9250 2.5 0.2200 2.5 0.6570
00 1.8 1.8900 1.5 2.1410 1.5 0.1240 1.8 0.4150
Playback to 16 Ohm Headphone 01 1 0 0 0 0 0 1 1 1 1 0 0 0 1 0 0 11 R24, OUT3SW=00 3.3 3.7060 3.3 5.6400 3.3 0.3000 3.3 1.4040
(capless mode using OUT3)
01 2.5 2.7130 2.5 3.9000 2.5 0.2200 2.5 0.9600
00 1.8 1.8870 1.5 2.1410 1.5 0.1240 1.8 0.6140
Playback to 8 Ohm BTL Speaker 01 1 0 0 0 0 0 1 1 0 0 1 1 0 0 0 0 11 R24, ROUT2INV=1 3.3 3.8820 3.3 5.6470 3.3 0.3000 3.3 0.2830
01 2.5 2.8780 2.5 3.9390 2.5 0.2200 2.5 0.2100
00 1.8 1.9800 1.5 2.1630 1.5 0.1240 1.8 0.1510
Headphone Amp
01 1 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 11 Clocks Stopped 3.3 1.8400 3.3 0.0200 3.3 0.0080 3.3 0.9540
(line-in to 16 Ohm headphone)
01 2.5 1.3300 2.5 0.0190 2.5 0.0050 2.5 0.6400
00 1.8 0.9300 1.5 0.0130 1.5 0.0030 1.8 0.4100
Speaker Amp
01 1 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 11 Clocks Stopped 3.3 1.9780 3.3 0.0200 3.3 0.0080 3.3 0.3310
(line-in to 8 Ohm speaker)
01 R24, ROUT2INV=1 2.5 1.4300 2.5 0.0190 2.5 0.0050 2.5 0.2430
00 1.8 0.9860 1.5 0.0130 1.5 0.0030 1.8 0.1760
Phone Call
01 1 0 0 0 0 1 0 0 0 0 1 1 1 0 0 0 11 Clocks Stopped 3.3 2.5230 3.3 0.0370 3.3 0.0080 3.3 0.4420
(mono line-in to headphone,
01 2.5 1.8520 2.5 0.0190 2.5 0.0050 2.5 0.3200
mic to MONOOUT)
00 1.8 1.2900 1.5 0.0130 1.5 0.0030 1.8 0.2240
Record from Line-in
01 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 11
3.3 8.6600 3.3 6.5700 3.3 0.3330 3.3 0.0000
01 2.5 7.7100 2.5 4.2800 2.5 0.2320 2.5 0.0000
00 1.8 6.8000 1.5 2.2100 1.5 0.1350 1.8 0.0000
Record from Line-in
01 1 1 1 1 1 0 0 0 0 0 0 0 0 0 1 0 11
3.3 5.0720 3.3 5.9100 3.3 0.3390 3.3 0.0000
(64x oversampling mode)
01 2.5 4.2550 2.5 3.7500 2.5 0.2320 2.5 0.0000
00 1.8 3.5900 1.5 1.9100 1.5 0.1350 1.8 0.0000
Record from mono microphone 01 1 1 0 1 0 1 0 0 0 0 0 0 0 0 0 0 11 R32, LMICBOOST=11; 3.3 4.9330 3.3 6.5400 3.3 0.3390 3.3 0.0000
01 R23, DATSEL=01 2.5 4.2970 2.5 4.2500 2.5 0.2400 2.5 0.0000
00 1.8 3.7210 1.5 2.2200 1.5 0.1370 1.8 0.0000
Record from mono microphone 01 1 1 0 1 0 1 0 0 0 0 0 0 0 0 0 0 11 R32, LMICBOOST=11; 3.3 5.2900 3.3 6.5000 3.3 0.3220 3.3 0.0000
(differential)
01 R23, DATSEL=01; 2.5 4.5600 2.5 4.2700 2.5 0.2400 2.5 0.0000
00 R32, LINSEL=11 1.8 3.9000 1.5 2.2200 1.5 0.1380 1.8 0.0000
Stereo Record & Playback
01 1 1 1 1 1 1 1 1 0 0 1 1 0 0 0 0 11
3.3 11.927 3.3 10.870 3.3 0.3320 3.3 0.2820
01 2.5 10.112 2.5 7.3600 2.5 0.2340 2.5 0.2060
00 1.8 7.3910 1.5 4.0610 1.5 0.1320 1.8 0.1480
Stereo Record & Playback
01 1 1 1 1 1 1 1 1 0 0 1 1 0 0 1 1 11
3.3 8.1090 3.3 9.3300 3.3 0.3330 3.3 0.2820
(64x oversampling mode)
01 2.5 6.5500 2.5 6.3020 2.5 0.2340 2.5 0.2070
00 1.8 4.7000 1.5 3.3800 1.5 0.1320 1.8 0.1490
mW
0.0950
0.0570
0.0233
1.4421
0.7750
0.3771
32.7624
17.4600
7.0536
31.0662
16.6175
6.7647
35.1417
18.8875
7.5465
36.4650
19.4825
7.8993
33.3696
18.1175
7.2663
9.3126
4.9850
2.4360
7.7121
4.2425
2.1156
9.9330
5.4900
2.7492
51.3579
30.5550
15.7575
37.3593
20.5925
9.5295
38.9796
21.9675
10.2333
39.9696
22.6750
10.5570
77.2563
44.7800
19.8597
59.5782
33.2325
13.9962
Table 1 Supply Current Consumption
Notes:
1. All figures are at TA = +25oC, Slave Mode, fs = 48kHz, MCLK = 12.288 MHz (256fs), with zero signal (quiescent)
2. The power dissipated in the headphone or speaker is not included in the above table.
PP Rev 1.77 May 2003
11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet WM8750L.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| WM8750-EV1M | Evaluation Board User Handbook |  Wolfson Microelectronics |
| WM8750BL | Stereo CODEC | Wolfson Microelectronics |
| WM8750JL | Stereo CODEC | Wolfson Microelectronics |
| WM8750L | STEREO CODEC FOR PORTABLE AUDIO APPLICATIONS | Wolfson Microelectronics plc |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |