WM8952ECS/RV

WM8952ECS/RV Datasheet

WM8952

Part	Datasheet
WM8952ECS/RV	WM8952ECS/RV (pdf)

PDF Datasheet Preview
WM8952 Mono ADC with Microphone Pre-amplifier The WM8952 is a low power, high quality mono ADC designed for portable applications such as wireless microphones or headsets. The device integrates support for differential or single ended microphone connections. External component requirements are reduced as no separate microphone amplifier is required. An advanced Sigma Delta Converter design is used to give high quality audio at sample rates from 8 to 48ks/s. A selectable high pass filter and four fully-programmable notch filters are also available in the signal path. An advanced mixed signal ALC function with noise gate is provided, supporting readback of PGA gain during ALC operation. The digital audio interface supports A-law and u-law companding. An on-chip PLL is provided to generate the required Master Clock from an external reference clock. The PLL clock can also be output if required elsewhere in the system. The WM8952 operates at supply voltages from to 3.6V, although the digital supplies can operate at voltages down to 1.71V to save power. Different sections of the chip can also be powered down under software control using the selectable two or three wire control interface. The device is supplied in a very small W-CSP package, offering high levels of functionality in minimum board area, with high thermal performance. BLOCK DIAGRAM • Mono ADC • Audio sample rates:8, 16, 24, 32, 48kHz • ADC SNR 94dB, THD -80dB ‘A’-weighted 8 48ks/s • Mic Preamps • Differential or single end Microphone Interface - Programmable preamp gain - Pseudo differential inputs with common mode rejection - Programmable ALC / Noise Gate in ADC path • Low-noise bias supplied for electret microphones • Multiple analog or ‘Aux’ inputs with analogue mixing OTHER FEATURES • Programmable high pass filter wind noise reduction • 4 notch filters narrowband noise suppression • On-chip PLL • Low power, low voltage - 2.5V to 3.6V digital 1.71V to 3.6V • 28 ball W-CSP x 0.7mm, 0.4mm pitch Package • Headsets • Wireless microphones • General purpose mono audio ADC WOLFSON MICROELECTRONICS plc To receive regular email updates, sign up at WM8952 TABLE OF CONTENTS Pre Production BLOCK DIAGRAM TABLE OF CONTENTS ORDERING INFORMATION PIN DESCRIPTION ABSOLUTE MAXIMUM RECOMMENDED OPERATING CONDITIONS ELECTRICAL CHARACTERISTICS TERMINOLOGY AUDIO PATHS OVERVIEW POWER CONSUMPTION SIGNAL TIMING REQUIREMENTS SYSTEM CLOCK TIMING AUDIO INTERFACE TIMING MASTER MODE AUDIO INTERFACE TIMING SLAVE CONTROL INTERFACE TIMING 3-WIRE MODE CONTROL INTERFACE TIMING 2-WIRE MODE DEVICE DESCRIPTION INTRODUCTION INPUT SIGNAL PATH ANALOGUE TO DIGITAL CONVERTER INPUT LIMITER / AUTOMATIC LEVEL CONTROL ALC DIGITAL AUDIO SAMPLE RATES MASTER CLOCK AND PHASE LOCKED LOOP PLL COMPANDING 47 GENERAL PURPOSE CONTROL 3-WIRE SERIAL CONTROL MODE READBACK IN 3-WIRE MODE 2-WIRE SERIAL CONTROL MODE RESETTING THE CHIP POWER SUPPLIES POWER MANAGEMENT POP MINIMISATION THERMAL SHUTDOWN REGISTER BITS BY ADDRESS DIGITAL FILTER CHARACTERISTICS TERMINOLOGY ADC FILTER HIGHPASS NOTCH FILTERS AND LOW PASS RECOMMENDED EXTERNAL COMPONENTS PACKAGE DIAGRAM IMPORTANT NOTICE Pre Production WM8952 WM8952 PIN CONFIGURATION Pre Production ORDERING INFORMATION ORDER CODE WM8952ECS/RV TEMPERATURE RANGE -25°C to +85°C Note Reel quantity WM8952ECS/RV = 3,500 PACKAGE 28-ball W-CSP Pb-free, tape and reel MOISTURE SENSITIVITY LEVEL MSL3 PACKAGE BODY TEMPERATURE 260oC Pre Production WM8952 PIN DESCRIPTION NAME WLCSP MICBIAS AVDD AGND DCVDD DBVDD DGND ADCDAT FRAME BCLK MCLK CSB/GPIO SCLK SDIN MODE/GPIO AGND2 AVDD2 VMID MICN MICP A3, B1, B2, C1, C2, D1, E1 TYPE Analogue Output Supply Digital Output Test pin Digital Input / Output Digital Input / Output Digital Input Digital Input / Output Digital Input Digital Input / Output Digital Input Supply Analogue Input Reference Analogue Input Analogue Input Do Not Connect Microphone bias Analogue supply Analogue ground Digital Supply Core Digital supply Input/Output Digital ground ADC digital audio data output Connect to ground ADC sample rate clock or frame synch Digital audio port clock Master clock input 3-Wire control interface chip select or GPIO pin Control interface clock input Control interface data input Control interface mode selection or GPIO pin Analogue ground Analogue supply Auxiliary analogue input Decoupling for midrail reference voltage Microphone negative input common mode Microphone positive input Leave these pins floating WM8952 Pre Production The Moisture Sensitivity Level for each package type is specified in Ordering Information. CONDITION DBVDD, DCVDD, AVDD supply voltages Voltage range digital inputs Voltage range analogue inputs Operating temperature range, TA Storage temperature prior to soldering Storage temperature after soldering Notes -0.3V DGND -0.3V1 AGND -0.3V1 DVDD +0.3V1 AVDD +0.3V1 -25°C +85°C 30°C max / 85% RH max -65°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. RECOMMENDED OPERATING CONDITIONS PARAMETER Digital supply range Core Digital supply voltage Buffer Analogue supplies range Ground SYMBOL DCVDD DBVDD AVDD, AVDD21 DGND, AGND, AGND2 TEST CONDITIONS Notes Analogue supply voltage must not be less than the digital supply voltages. DBVDD must be DCVDD UNIT Pre Production WM8952 ELECTRICAL CHARACTERISTICS Test Conditions DCVDD=1.8V, DBVDD=3.3V, AVDD=3.3V, TA = +25oC, 1kHz signal, fs = 48kHz, 24-bit audio data unless otherwise stated. PARAMETER TEST CONDITIONS UNIT Microphone Input PGA Inputs MICN, MICP INPPGAVOL and PGABOOST = 0dB Full-scale Input Signal Level Singleended input via LIN/RIN 1 AVDD/3.3 Vrms Full-scale Input Signal Level Pseudo-differential input 1,2 AVDD*0.7/ Vrms Input PGA equivalent input noise MICN input resistance MICN input resistance MICN input resistance MICP input resistance Input Capacitance Maximum Input PGA Programmable Gain Minimum Input PGA Programmable Gain Programmable Gain Step Size Input PGA Mute Attenuation Input Gain Boost Input Gain Boost Auxiliary Analogue Input AUX Full-scale Input Signal Level 2 INPPGAVOL = +35.25dB No input signal 0 to 20kHz INPPGAVOL = +35.25dB INPPGAVOL = 0dB INPPGAVOL = -12dB All gain settings All analogue input pins Gain adjusted by INPPGAVOL Gain adjusted by INPPGAVOL Guaranteed monotonic INPPGAMUTE PGABOOST= 0 PGABOOST = 1 92 0 +20

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WM8952

Mono ADC with Microphone Pre-amplifier

The WM8952 is a low power, high quality mono ADC designed for portable applications such as wireless microphones or headsets.

The device integrates support for differential or single ended microphone connections. External component requirements are reduced as no separate microphone amplifier is required.

An advanced Sigma Delta Converter design is used to give high quality audio at sample rates from 8 to 48ks/s. A selectable high pass filter and four fully-programmable notch filters are also available in the signal path. An advanced mixed signal ALC function with noise gate is provided, supporting readback of PGA gain during ALC operation. The digital audio interface supports A-law and u-law companding.

An on-chip PLL is provided to generate the required Master Clock from an external reference clock. The PLL clock can also be output if required elsewhere in the system.

The WM8952 operates at supply voltages from to 3.6V, although the digital supplies can operate at voltages down to 1.71V to save power. Different sections of the chip can also be powered down under software control using the selectable two or three wire control interface. The device is supplied in a very small W-CSP package, offering high levels of functionality in minimum board area, with high thermal performance.

BLOCK DIAGRAM
• Mono ADC
• Audio sample rates:8, 16, 24, 32, 48kHz
• ADC SNR 94dB, THD -80dB ‘A’-weighted 8 48ks/s
• Mic Preamps
• Differential or single end Microphone Interface
- Programmable preamp gain - Pseudo differential inputs with common mode rejection - Programmable ALC / Noise Gate in ADC path
• Low-noise bias supplied for electret microphones
• Multiple analog or ‘Aux’ inputs with analogue mixing

OTHER FEATURES
• Programmable high pass filter wind noise reduction
• 4 notch filters narrowband noise suppression
• On-chip PLL
• Low power, low voltage
- 2.5V to 3.6V digital 1.71V to 3.6V
• 28 ball W-CSP x 0.7mm, 0.4mm pitch Package
• Headsets
• Wireless microphones
• General purpose mono audio ADC

WOLFSON MICROELECTRONICS plc

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WM8952

TABLE OF CONTENTS

Pre Production

BLOCK DIAGRAM

TABLE OF CONTENTS
ORDERING INFORMATION

PIN DESCRIPTION

ABSOLUTE MAXIMUM RECOMMENDED OPERATING CONDITIONS

ELECTRICAL CHARACTERISTICS TERMINOLOGY

AUDIO PATHS OVERVIEW

POWER CONSUMPTION

SIGNAL TIMING REQUIREMENTS SYSTEM CLOCK TIMING AUDIO INTERFACE TIMING MASTER MODE AUDIO INTERFACE TIMING SLAVE CONTROL INTERFACE TIMING 3-WIRE MODE CONTROL INTERFACE TIMING 2-WIRE MODE

DEVICE DESCRIPTION INTRODUCTION INPUT SIGNAL PATH ANALOGUE TO DIGITAL CONVERTER INPUT LIMITER / AUTOMATIC LEVEL CONTROL ALC DIGITAL AUDIO SAMPLE RATES MASTER CLOCK AND PHASE LOCKED LOOP PLL COMPANDING 47 GENERAL PURPOSE CONTROL 3-WIRE SERIAL CONTROL MODE READBACK IN 3-WIRE MODE 2-WIRE SERIAL CONTROL MODE RESETTING THE CHIP POWER SUPPLIES POWER MANAGEMENT POP MINIMISATION THERMAL SHUTDOWN

REGISTER BITS BY ADDRESS

DIGITAL FILTER CHARACTERISTICS TERMINOLOGY ADC FILTER HIGHPASS NOTCH FILTERS AND LOW PASS

RECOMMENDED EXTERNAL COMPONENTS

PACKAGE DIAGRAM

IMPORTANT NOTICE

Pre Production

WM8952

WM8952 PIN CONFIGURATION

Pre Production
ORDERING INFORMATION

ORDER CODE WM8952ECS/RV

TEMPERATURE RANGE
-25°C to +85°C

Note Reel quantity WM8952ECS/RV = 3,500

PACKAGE
28-ball W-CSP Pb-free, tape and reel

MOISTURE SENSITIVITY LEVEL

MSL3

PACKAGE BODY TEMPERATURE
260oC

Pre Production

WM8952

PIN DESCRIPTION

NAME

WLCSP

MICBIAS

AVDD

AGND

DCVDD

DBVDD

DGND

ADCDAT

FRAME

BCLK

MCLK

CSB/GPIO

SCLK

SDIN

MODE/GPIO

AGND2

AVDD2

VMID

MICN

MICP

A3, B1, B2, C1, C2, D1, E1

TYPE

Analogue Output Supply Digital Output Test pin Digital Input / Output Digital Input / Output Digital Input Digital Input / Output Digital Input Digital Input / Output Digital Input Supply Analogue Input Reference Analogue Input Analogue Input Do Not Connect

Microphone bias Analogue supply Analogue ground Digital Supply Core Digital supply Input/Output Digital ground ADC digital audio data output Connect to ground ADC sample rate clock or frame synch Digital audio port clock Master clock input 3-Wire control interface chip select or GPIO pin Control interface clock input Control interface data input Control interface mode selection or GPIO pin Analogue ground Analogue supply Auxiliary analogue input Decoupling for midrail reference voltage Microphone negative input common mode Microphone positive input Leave these pins floating

WM8952

Pre Production
The Moisture Sensitivity Level for each package type is specified in Ordering Information.

CONDITION DBVDD, DCVDD, AVDD supply voltages Voltage range digital inputs Voltage range analogue inputs Operating temperature range, TA Storage temperature prior to soldering Storage temperature after soldering

Notes
-0.3V DGND -0.3V1 AGND -0.3V1

DVDD +0.3V1 AVDD +0.3V1
-25°C
+85°C
30°C max / 85% RH max
-65°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.

RECOMMENDED OPERATING CONDITIONS

PARAMETER Digital supply range Core Digital supply voltage Buffer Analogue supplies range Ground

SYMBOL DCVDD DBVDD AVDD, AVDD21 DGND, AGND, AGND2

TEST CONDITIONS

Notes Analogue supply voltage must not be less than the digital supply voltages. DBVDD must be DCVDD

UNIT

Pre Production

WM8952

ELECTRICAL CHARACTERISTICS

Test Conditions

DCVDD=1.8V, DBVDD=3.3V, AVDD=3.3V, TA = +25oC, 1kHz signal, fs = 48kHz, 24-bit audio data unless otherwise stated.

PARAMETER

TEST CONDITIONS

UNIT

Microphone Input PGA Inputs MICN, MICP

INPPGAVOL and PGABOOST = 0dB

Full-scale Input Signal Level Singleended input via LIN/RIN 1

AVDD/3.3

Vrms

Full-scale Input Signal Level Pseudo-differential input 1,2

AVDD*0.7/

Vrms

Input PGA equivalent input noise

MICN input resistance MICN input resistance MICN input resistance MICP input resistance Input Capacitance Maximum Input PGA Programmable Gain Minimum Input PGA Programmable Gain Programmable Gain Step Size Input PGA Mute Attenuation Input Gain Boost Input Gain Boost Auxiliary Analogue Input AUX Full-scale Input Signal Level 2

INPPGAVOL = +35.25dB No input signal 0 to 20kHz

INPPGAVOL = +35.25dB INPPGAVOL = 0dB INPPGAVOL = -12dB All gain settings

All analogue input pins Gain adjusted by INPPGAVOL Gain adjusted by INPPGAVOL

Guaranteed monotonic INPPGAMUTE PGABOOST= 0 PGABOOST = 1
92 0 +20

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 WM8952ECS/RV Datasheet file may be downloaded here without warranties.

Datasheet ID: WM8952ECS/RV 523281