Datenblatt-pdf.com


WM8753 Schematic ( PDF Datasheet ) - Wolfson Microelectronics plc

Teilenummer WM8753
Beschreibung HI FI AND TELEPHONY DUAL CODEC
Hersteller Wolfson Microelectronics plc
Logo Wolfson Microelectronics plc Logo 




Gesamt 30 Seiten
WM8753 Datasheet, Funktion
w
WM8753L
Hi-Fi and Telephony Dual Codec
DESCRIPTION
The WM8753L is a low power, high quality stereo Codec with
integrated Voice CODEC designed for portable digital
telephony applications such as mobile phone, or headset with
Hi-Fi playback capability.
The device integrates dual interfaces to two differentially
connected microphones, and includes drivers for speakers,
headphone and earpiece. External component requirements
are reduced as no separate microphone or headphone
amplifiers are required, and Cap-less connections can be made
to all loads. Advanced on-chip digital signal processing
performs tone control, Bass Boost and automatic level control
for the microphone or line input through the ADC. The two
ADCs may be used to support Voice noise cancellation in a
partnering DSP, or for stereo recording.
The WM8753L Hi-Fi DAC can operate as a master or a slave,
with various master clock frequencies including 12 or 24MHz
for USB devices, 13MHz or 19.2MHz for cellular systems, or
standard 256fs rates like 12.288MHz and 24.576MHz. Internal
PLLs generate all required clocks for both Voice and Hi-Fi
converters. If audio system clocks already exist, the PLLs may
be committed to alternative uses.
The WM8753L operates at a nominal supply voltage of 2V,
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.
FEATURES
Hi-Fi DAC: interfaced over I2S type link
Audio sample rates:
8, 11.025, 16, 22.05, 24, 32, 44.1, 48, 88.2, 96
DAC SNR 98dB, THD -84dB (‘A’ weighted @ 48kHz)
ADC SNR 95dB, THD -82dB (‘A’ weighted @ 48kHz)
On-chip Headphone Driver with cap-less output option
- 40mW output power on 16/ 3.3V
- with 16load: SNR 90dB, THD –75dB
- with 10kload: SNR 94dB, THD –90dB
On-chip speaker driver with 0.5W into 8R
Voice Codec: interfaced over Voice interface
supports sample rates from 8ks/s to 48ks/s
ADC and DAC SNR 82dB, THD -74dB
Two Differential Microphone Interfaces
- Dual ADCs support noise cancellation in external DSP
- Programmable ALC / Noise Gate
Low-noise bias supplied for electret microphones
Other features
On-chip PLLs supporting 12, 13, 19.2MHz and other clocks
Cap-less connection options to headphones, earpiece, spkr.
Low power, low voltage
- 1.8V to 3.6V (digital core: 1.42V to 3.6V)
- power consumption <20mW all-on with 2V supplies
- <12mW for PCM CODEC operation
7x7x0.9mm QFN package, 5x5x0.9mm BGA package
APPLICATIONS
MP3 Player / Recorder mobile phone
Bluetooth stereo headset
WOLFSON MICROELECTRONICS plc
www.wolfsonmicro.com
Advanced Information, June 2004, Rev 3.1
Copyright 2004 Wolfson Microelectronics plc






WM8753 Datasheet, Funktion
Advanced Information
WM8753L
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.
Wolfson tests its package types according to IPC/JEDEC J-STD-020B for Moisture Sensitivity to determine acceptable storage
conditions prior to surface mount assembly. These levels are:
MSL1 = unlimited floor life at <30°C / 85% Relative Humidity. Not normally stored in moisture barrier bag.
MSL2 = out of bag storage for 1 year at <30°C / 60% Relative Humidity. Supplied in moisture barrier bag.
MSL3 = out of bag storage for 168 hours at <30°C / 60% Relative Humidity. Supplied in moisture barrier bag.
The Moisture Sensitivity Level for each package type is specified in Ordering Information.
CONDITION
MIN
Supply voltages
-0.3V
Voltage range digital inputs
DGND - 0.3V
Voltage range analogue inputs
AGND - 0.3V
Operating temperature range, TA
Storage temperature after soldering
-25°C
-65°C
Notes:
1. Analogue, PLL 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.
MAX
+3.63V
DVDD + 0.3V
AVDD + 0.3V
+85°C
+150°C
SIMULATED THERMAL PROPERTIES
POWER INPUT (WATTS)
1 Watt
0.5 Watt
THETA Ja (OC/W)
48.8
48.9
THETA Jc (OC/W)
17.4
18.2
Tj (OC)
73.8
49.4
Tc(OC)
26.5
25.7
RECOMMENDED OPERATING CONDITIONS
PARAMETER
Digital supply range (Core)
Digital supply range (Buffer)
Analogue supplies range
PLL supplies range
Ground
SYMBOL
DCVDD
DBVDD
AVDD
PLLVDD
DGND,AGND,PLLGND,
HP/SPKRGND
TEST CONDITIONS
MIN
1.42
1.8
1.8
1.8
TYP MAX UNIT
3.6 V
3.6 V
3.6 V
3.6 V
0V
w
AI Rev 3.1 June 2004
6

6 Page









WM8753 pdf, datenblatt
Advanced Information
WM8753L
Table 2 Power Consumption Figures
w
AI Rev 3.1 June 2004
12

12 Page





SeitenGesamt 30 Seiten
PDF Download[ WM8753 Schematic.PDF ]

Link teilen




Besondere Datenblatt

TeilenummerBeschreibungHersteller
WM8750-EV1MEvaluation Board User HandbookWolfson Microelectronics
Wolfson Microelectronics
WM8750BLStereo CODECWolfson Microelectronics
Wolfson Microelectronics
WM8750JLStereo CODECWolfson Microelectronics
Wolfson Microelectronics
WM8750LSTEREO CODEC FOR PORTABLE AUDIO APPLICATIONSWolfson Microelectronics plc
Wolfson Microelectronics plc
WM8751LSTEREO DAC FOR PORTABLE AUDIO APPLICATIONSWolfson Microelectronics plc
Wolfson Microelectronics plc

TeilenummerBeschreibungHersteller
CD40175BC

Hex D-Type Flip-Flop / Quad D-Type Flip-Flop.

Fairchild Semiconductor
Fairchild Semiconductor
KTD1146

EPITAXIAL PLANAR NPN TRANSISTOR.

KEC
KEC


www.Datenblatt-PDF.com       |      2020       |      Kontakt     |      Suche