WM8750CLSEFL

WM8750CLSEFL Datasheet

WM8750L

Part	Datasheet
WM8750CLSEFL	WM8750CLSEFL (pdf)

Related Parts	Information
WM8750CLSEFL/R	WM8750CLSEFL/R

PDF Datasheet Preview
WM8750L Stereo CODEC for Portable Audio Applications 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 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. • DAC SNR 98dB ‘A’ weighted , THD -84dB at 48kHz, 3.3V • ADC SNR 95dB ‘A’ weighted , THD -82dB 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 / 3.3V - THD at 20mW, SNR 90dB with 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, 16, 24, 32, 48, 96kHz generated internally from master clock • 5x5x0.9mm QFN package • 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 + MIC BOOST LINSEL ANALOGUE MONO MIX RINSEL + MIC BOOST DC MEASUREMENT M U X RMIXSEL DGND DCVDD DBVDD W WM8750L DIGITAL FILTERS VOLUME DIGITAL MONO MIX 3D ENHANCE DIGITAL FILTERS GRAPHIC EQUALISER BASS BOOST LEFT LD2LO MIXER LI2LO ORDERING 4 PIN 5 ABSOLUTE MAXIMUM RATINGS 6 RECOMMENDED OPERATION 6 ELECTRICAL CHARACTERISTICS 7 OUTPUT PGA’S LINEARITY 9 HEADPHONE OUTPUT THD VERSUS POWER 10 SPEAKER THD AND NOISE VERSUS POWER 11 POWER CONSUMPTION 12 SIGNAL TIMING REQUIREMENTS 13 SYSTEM CLOCK 13 AUDIO INTERFACE TIMING MASTER MODE 13 AUDIO INTERFACE TIMING SLAVE MODE 14 CONTROL INTERFACE TIMING 3-WIRE 15 CONTROL INTERFACE TIMING 2-WIRE 16 INTERNAL POWER ON RESET CIRCUIT 17 DEVICE DESCRIPTION 18 INTRODUCTION 18 INPUT SIGNAL PATH 18 AUTOMATIC LEVEL CONTROL ALC 25 OUTPUT SIGNAL PATH 29 ANALOGUE OUTPUTS 34 ENABLING THE OUTPUTS 36 HEADPHONE 37 THERMAL SHUTDOWN 38 HEADPHONE OUTPUT 38 DIGITAL AUDIO 40 AUDIO INTERFACE CONTROL 44 CLOCKING AND SAMPLE 47 CONTROL 49 POWER SUPPLIES 50 POWER MANAGEMENT 51 REGISTER MAP 54 DIGITAL FILTER CHARACTERISTICS 55 TERMINOLOGY 55 DAC FILTER RESPONSES 56 ADC FILTER RESPONSES 57 DE-EMPHASIS FILTER RESPONSES 58 HIGHPASS FILTER 59 APPLICATIONS INFORMATION 60 RECOMMENDED EXTERNAL COMPONENTS 60 LINE INPUT 61 Production Data WM8750L MICROPHONE INPUT CONFIGURATION 61 MINIMISING POP NOISE AT THE ANALOGUE 62 POWER MANAGEMENT EXAMPLES 62 PACKAGE 63 IMPORTANT NOTICE 64 ADDRESS 64 WM8750L PIN CONFIGURATION SCLK SDIN CSB MODE LINPUT1 RINPUT1 LINPUT2 RINPUT2 32 31 30 29 28 27 26 25 MCLK 1 DCVDD 2 DBVDD 3 DGND 4 BCLK 5 DACDAT 6 DACLRC 7 ADCDAT 8 24 LINPUT3 RINPUT3 / HPDETECT 22 MICBIAS 21 VMID 20 VREF 19 AGND 18 AVDD 17 HPVDD 9 10 11 12 13 14 15 16 Production Data ADCLRC MONOOUT OUT3 ROUT1 LOUT1 HPGND ROUT2 LOUT2 ORDERING INFORMATION ORDER CODE WM8750CLSEFL/R Note Reel quantity = 3500 TEMPERATURE RANGE -25C to +85C -25C to +85C PACKAGE 32-lead QFN 5x5x0.9mm Pb-free 32-lead QFN 5x5x0.9mm Pb-free, tape and reel MOISTURE PEAK SOLDERING SENSITIVITY LEVEL TEMPERATURE MSL1 260oC MSL1 260oC Production Data PIN DESCRIPTION WM8750L PIN NO 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 Note: NAME MCLK DCVDD DBVDD DGND BCLK DACDAT DACLRC ADCDAT ADCLRC MONOOUT OUT3 ROUT1 LOUT1 HPGND ROUT2 LOUT2 HPVDD AVDD AGND VREF VMID MICBIAS RINPUT3 / HPDETECT LINPUT3 RINPUT2 LINPUT2 RINPUT1 LINPUT1 MODE CSB SDIN SCLK TYPE Digital Input Supply Digital Input / Output Digital Input Digital Input / Output Digital Output Digital Input / Output Analogue Output Analogue Output Analogue Output Analogue Output Supply Analogue Output Analogue Output Supply Analogue Output Analogue Output Analogue Output Analogue Input Analogue Input 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/Clock Out ADC Digital Audio Data Audio Interface Left / Right Clock Mono Output Analogue 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 Microphone Bias Right Channel Input 3 or Headphone Plug-in Detection Left Channel Input 3 Right Channel Input 2 Left Channel Input 2 Right Channel Input 1 Left Channel Input 1 Control Interface Selection Chip Select / Device Address Selection Control Interface Data Input / 2-wire Acknowledge output Control Interface Clock Input It is recommended that the QFN ground paddle should be connected to analogue ground on the application PCB. WM8750L Production Data 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 Supply voltages Voltage range digital inputs Voltage range analogue inputs -0.3V DGND -0.3V AGND -0.3V +3.63V DBVDD +0.3V AVDD +0.3V Operating temperature range, TA Storage temperature after soldering -25C -65C +85C +150C Analogue and digital grounds must always be within 0.3V of each other. All digital and analogue supplies are completely independent from each other. DCVDD must be less than or equal to AVDD and 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 UNIT Production Data WM8750L ELECTRICAL CHARACTERISTICS Test Conditions DCVDD = 1.5V, DBVDD = 3.3V, AVDD = HPVDD = 3.3V, TA = +25oC, 1kHz signal, fs = 48kHz, PGA gain = 0dB, 24-bit audio data unless otherwise stated. PARAMETER SYMBOL TEST CONDITIONS Analogue Inputs LINPUT1, RINPUT1, LINPUT2, RINPUT2, LINPUT3, RINPUT3 to ADC out Full Scale Input Signal Level for ADC 0dB Input at 0dB Gain VINFS AVDD = 3.3V AVDD = 1.8V Input Resistance L/RINPUT1 to ADC, PGA gain = 0dB L/RINPUT1 to ADC, PGA gain = +30dB L/RINPUT1 unused DC Measurement UNIT V rms L/RINPUT1 unused Input Capacitance Signal to Noise Ratio AVDD = 3.3V A-weighted AVDD = 1.8V Total Harmonic Distortion

PDF Datasheet Preview

WM8750L

Stereo CODEC for Portable Audio Applications

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 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.
• DAC SNR 98dB ‘A’ weighted , THD -84dB at 48kHz, 3.3V
• ADC SNR 95dB ‘A’ weighted , THD -82dB 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 / 3.3V - THD at 20mW, SNR 90dB with 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, 16, 24, 32, 48, 96kHz generated internally from master clock
• 5x5x0.9mm QFN package
• 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
+ MIC

BOOST

LINSEL

ANALOGUE MONO MIX

RINSEL
+ MIC

BOOST

DC MEASUREMENT

M U X RMIXSEL

DGND

DCVDD

DBVDD

W WM8750L

DIGITAL FILTERS

VOLUME

DIGITAL MONO MIX
3D ENHANCE

DIGITAL FILTERS

GRAPHIC EQUALISER

BASS BOOST

LEFT LD2LO MIXER

LI2LO
ORDERING 4

PIN 5

ABSOLUTE MAXIMUM RATINGS 6

RECOMMENDED OPERATION 6

ELECTRICAL CHARACTERISTICS 7

OUTPUT PGA’S LINEARITY 9 HEADPHONE OUTPUT THD VERSUS POWER 10 SPEAKER THD AND NOISE VERSUS POWER 11

POWER CONSUMPTION 12

SIGNAL TIMING REQUIREMENTS 13

SYSTEM CLOCK 13 AUDIO INTERFACE TIMING MASTER MODE 13 AUDIO INTERFACE TIMING SLAVE MODE 14 CONTROL INTERFACE TIMING 3-WIRE 15 CONTROL INTERFACE TIMING 2-WIRE 16

INTERNAL POWER ON RESET CIRCUIT 17

DEVICE DESCRIPTION 18

INTRODUCTION 18 INPUT SIGNAL PATH 18 AUTOMATIC LEVEL CONTROL ALC 25 OUTPUT SIGNAL PATH 29 ANALOGUE OUTPUTS 34 ENABLING THE OUTPUTS 36 HEADPHONE 37 THERMAL SHUTDOWN 38 HEADPHONE OUTPUT 38 DIGITAL AUDIO 40 AUDIO INTERFACE CONTROL 44 CLOCKING AND SAMPLE 47 CONTROL 49 POWER SUPPLIES 50 POWER MANAGEMENT 51

REGISTER MAP 54

DIGITAL FILTER CHARACTERISTICS 55

TERMINOLOGY 55 DAC FILTER RESPONSES 56 ADC FILTER RESPONSES 57 DE-EMPHASIS FILTER RESPONSES 58 HIGHPASS FILTER 59

APPLICATIONS INFORMATION 60

RECOMMENDED EXTERNAL COMPONENTS 60 LINE INPUT 61

Production Data

WM8750L

MICROPHONE INPUT CONFIGURATION 61 MINIMISING POP NOISE AT THE ANALOGUE 62 POWER MANAGEMENT EXAMPLES 62

PACKAGE 63

IMPORTANT NOTICE 64

ADDRESS 64

WM8750L PIN CONFIGURATION

SCLK SDIN CSB MODE LINPUT1 RINPUT1 LINPUT2 RINPUT2
32 31 30 29 28 27 26 25

MCLK 1 DCVDD 2 DBVDD 3

DGND 4 BCLK 5 DACDAT 6 DACLRC 7 ADCDAT 8
24 LINPUT3

RINPUT3 / HPDETECT
22 MICBIAS
21 VMID
20 VREF
19 AGND 18 AVDD
17 HPVDD
9 10 11 12 13 14 15 16

Production Data

ADCLRC MONOOUT

OUT3 ROUT1 LOUT1 HPGND ROUT2 LOUT2
ORDERING INFORMATION

ORDER CODE WM8750CLSEFL/R Note Reel quantity = 3500

TEMPERATURE RANGE
-25C to +85C
-25C to +85C

PACKAGE
32-lead QFN 5x5x0.9mm Pb-free
32-lead QFN 5x5x0.9mm Pb-free, tape and reel

MOISTURE

PEAK SOLDERING

SENSITIVITY LEVEL TEMPERATURE

MSL1
260oC

MSL1
260oC

Production Data

PIN DESCRIPTION

WM8750L

PIN NO 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
24 25 26 27 28 29 30 31 32 Note:

NAME MCLK DCVDD DBVDD DGND BCLK DACDAT DACLRC ADCDAT ADCLRC MONOOUT OUT3 ROUT1 LOUT1 HPGND ROUT2 LOUT2 HPVDD AVDD AGND VREF VMID MICBIAS RINPUT3 / HPDETECT LINPUT3 RINPUT2 LINPUT2 RINPUT1 LINPUT1 MODE CSB SDIN SCLK

TYPE Digital Input Supply Digital Input / Output Digital Input Digital Input / Output Digital Output Digital Input / Output Analogue Output Analogue Output Analogue Output Analogue Output Supply Analogue Output Analogue Output Supply Analogue Output Analogue Output Analogue Output Analogue Input

Analogue Input 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/Clock Out ADC Digital Audio Data Audio Interface Left / Right Clock Mono Output Analogue 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 Microphone Bias Right Channel Input 3 or Headphone Plug-in Detection

Left Channel Input 3 Right Channel Input 2 Left Channel Input 2 Right Channel Input 1 Left Channel Input 1 Control Interface Selection Chip Select / Device Address Selection Control Interface Data Input / 2-wire Acknowledge output Control Interface Clock Input

It is recommended that the QFN ground paddle should be connected to analogue ground on the application PCB.

WM8750L

Production Data

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

Supply voltages Voltage range digital inputs Voltage range analogue inputs
-0.3V DGND -0.3V AGND -0.3V
+3.63V DBVDD +0.3V AVDD +0.3V

Operating temperature range, TA Storage temperature after soldering
-25C -65C
+85C +150C

Analogue and digital grounds must always be within 0.3V of each other.

All digital and analogue supplies are completely independent from each other.

DCVDD must be less than or equal to AVDD and 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

UNIT

Production Data

WM8750L

ELECTRICAL CHARACTERISTICS

Test Conditions

DCVDD = 1.5V, DBVDD = 3.3V, AVDD = HPVDD = 3.3V, TA = +25oC, 1kHz signal, fs = 48kHz, PGA gain = 0dB, 24-bit audio data unless otherwise stated.

PARAMETER

SYMBOL TEST CONDITIONS

Analogue Inputs LINPUT1, RINPUT1, LINPUT2, RINPUT2, LINPUT3, RINPUT3 to ADC out

Full Scale Input Signal Level for ADC 0dB Input at 0dB Gain

VINFS

AVDD = 3.3V AVDD = 1.8V

Input Resistance

L/RINPUT1 to ADC,

PGA gain = 0dB

L/RINPUT1 to ADC,

PGA gain = +30dB

L/RINPUT1 unused

DC Measurement

UNIT V rms

L/RINPUT1 unused

Input Capacitance

Signal to Noise Ratio

AVDD = 3.3V

A-weighted

AVDD = 1.8V

Total Harmonic Distortion

Notice: we do not provide any warranties that information, datasheets, application notes, circuit diagrams, or software stored on this website are up-to-date or error free. The archived WM8750CLSEFL Datasheet file may be downloaded here without warranties.

Datasheet ID: WM8750CLSEFL 523273