WM1824BGEDT

WM1824BGEDT Datasheet

WM1824B

Part	Datasheet
WM1824BGEDT	WM1824BGEDT (pdf)

Related Parts	Information
WM1824BGEDT/R	WM1824BGEDT/R

PDF Datasheet Preview
WM1824B 24-bit 192kHz Stereo DAC with 2Vrms Ground Referenced Line Output The WM1824B is a stereo DAC with integral charge pump. This provides 2Vrms line driver outputs using a single 3.3V power supply rail. The device features ground-referenced outputs and the use of a DC servo to eliminate the need for line driving coupling capacitors and effectively eliminate power on pops and clicks. The device is controlled and configured via a hardware control interface. The device supports all common audio sampling rates between 8kHz and 192kHz using all common MCLK fs rates. The audio interface operates in slave mode. The WM1824B has a 3.3V tolerant digital interface, allowing logic up to 3.3V to be connected. The device is available in a 16-pin TSSOP package. BLOCK DIAGRAM • High performance stereo DAC with ground referenced line driver • Audio Performance 106dB SNR ‘A-weighted’ -87dB THD -1dBFS • 120dB mute attenuation • All common sample rates from 8kHz to 192kHz supported • Hardware control mode • I2S input data format • < 1mV DC offset on Line Outputs • Pop/Click suppressed Power Up/Down Sequencer • AVDD, LINEVDD and DBVDD can operate at +3.3V ±10% allowing single supply • 16 lead TSSOP package • Operating temperature range -40°C to 85°C • Consumer digital audio applications requiring 2Vrms output Games Consoles Set Top Box A/V Receivers DVD Players Digital TV WOLFSON MICROELECTRONICS plc WM1824B Production Data TABLE OF CONTENTS FEATURES 1 BLOCK DIAGRAM 1 TABLE OF 2 PIN CONFIGURATION 3 ORDERING 3 PIN 4 ABSOLUTE MAXIMUM RATINGS 5 RECOMMENDED OPERATING 5 ELECTRICAL CHARACTERISTICS 6 TERMINOLOGY 6 POWER CONSUMPTION MEASUREMENTS 8 SIGNAL TIMING REQUIREMENTS 9 SYSTEM CLOCK 9 AUDIO INTERFACE TIMING 10 POWER ON RESET 11 DEVICE DESCRIPTION 13 INTRODUCTION 13 DIGITAL AUDIO 13 DIGITAL AUDIO DATA SAMPLING RATES 14 HARDWARE CONTROL INTERFACE 15 DIGITAL FILTER CHARACTERISTICS 17 DAC FILTER RESPONSES 18 APPLICATIONS INFORMATION 19 RECOMMENDED EXTERNAL COMPONENTS 19 RECOMMENDED ANALOGUE LOW PASS 20 RELEVANT APPLICATION NOTES 20 PACKAGE 21 IMPORTANT NOTICE 22 ADDRESS 22 Production Data PIN CONFIGURATION WM1824B 16-LEAD TSSOP TOP VIEW ORDERING INFORMATION ORDER CODE TEMPERATURE RANGE WM1824BGEDT/R Note Reel quantity = 2,000 −40°C to +85°C −40°C to +85°C PACKAGE 16-lead TSSOP pb-free 16-lead TSSOP pb-free, tape and reel MOISTURE SENSITIVITY LEVEL MSL1 MSL1 PEAK SOLDERING TEMPERATURE 260oC 260oC WM1824B PIN DESCRIPTION PIN NO 1 2 3 NAME AGND AVDD VMID TYPE Supply Analogue Out Digital Input LRCLK Digital Input DACDAT Digital Input BCLK Digital Input MCLK Digital Input DBVDD Supply LINEVDD Supply CPCA Analogue Out LINEGND Supply CPCB Analogue In CPVOUTN Analogue Out The Moisture Sensitivity Level for each package type is specified in Ordering Information. CONDITION AVDD, LINEVDD, DBVDD Voltage range digital inputs Voltage range analogue inputs Temperature range, TA Storage temperature after soldering Notes LINEVDD and AVDD must always be within 0.3V of each other. MIN -0.3V AGND -0.3V AGND -0.3V -40°C -65°C MAX +4.5V AVDD +0.3V AVDD +0.3V +125°C +150°C RECOMMENDED OPERATING CONDITIONS PARAMETER Analogue supply range Ground Digital Buffer supply range SYMBOL AVDD, LINEVDD AGND, LINEGND DBVDD TEST CONDITIONS TYP 0 or UNIT V WM1824B Production Data ELECTRICAL CHARACTERISTICS Test Conditions LINEVDD=AVDD=DBVDD=3.3V, LINEGND=AGND=0V, TA=+25°C, fs=48kHz, MCLK=256fs, 24-bit data, unless otherwise stated. BCLK transition as per Figure PARAMETER SYMBOL TEST CONDITIONS UNIT Analogue Output Levels Output Level Load Impedance Load Capacitance 0dBFS 2.1xAVDD No external RC filter Vrms With filter shown in Figure 14 DAC Performance Signal to Noise Ratio A-weighted Un-weighted Dynamic Range RL = A-weighted Total Harmonic Distortion -1dBFS 0dBFS AVDD + LINEVDD Power Supply Rejection Ratio PSRR 100Hz 1kHz Channel Separation System Absolute Phase Channel Level Matching Mute Attenuation DC Offset at LINEVOUTL and LINEVOUTR 20kHz 1kHz 20Hz to 20kHz

PDF Datasheet Preview

WM1824B
24-bit 192kHz Stereo DAC with 2Vrms Ground Referenced Line Output

The WM1824B is a stereo DAC with integral charge pump. This provides 2Vrms line driver outputs using a single 3.3V power supply rail. The device features ground-referenced outputs and the use of a DC servo to eliminate the need for line driving coupling capacitors and effectively eliminate power on pops and clicks. The device is controlled and configured via a hardware control interface. The device supports all common audio sampling rates between 8kHz and 192kHz using all common MCLK fs rates. The audio interface operates in slave mode. The WM1824B has a 3.3V tolerant digital interface, allowing logic up to 3.3V to be connected. The device is available in a 16-pin TSSOP package.

BLOCK DIAGRAM
• High performance stereo DAC with ground referenced line driver
• Audio Performance 106dB SNR ‘A-weighted’ -87dB THD -1dBFS
• 120dB mute attenuation
• All common sample rates from 8kHz to 192kHz supported
• Hardware control mode
• I2S input data format
• < 1mV DC offset on Line Outputs
• Pop/Click suppressed Power Up/Down Sequencer
• AVDD, LINEVDD and DBVDD can operate at +3.3V ±10%
allowing single supply
• 16 lead TSSOP package
• Operating temperature range -40°C to 85°C
• Consumer digital audio applications requiring 2Vrms output Games Consoles Set Top Box A/V Receivers DVD Players Digital TV

WOLFSON MICROELECTRONICS plc

WM1824B

Production Data

TABLE OF CONTENTS

FEATURES 1

BLOCK DIAGRAM 1

TABLE OF 2

PIN CONFIGURATION 3
ORDERING 3

PIN 4

ABSOLUTE MAXIMUM RATINGS 5

RECOMMENDED OPERATING 5

ELECTRICAL CHARACTERISTICS 6 TERMINOLOGY 6 POWER CONSUMPTION MEASUREMENTS 8

SIGNAL TIMING REQUIREMENTS 9 SYSTEM CLOCK 9 AUDIO INTERFACE TIMING 10 POWER ON RESET 11

DEVICE DESCRIPTION 13 INTRODUCTION 13 DIGITAL AUDIO 13 DIGITAL AUDIO DATA SAMPLING RATES 14 HARDWARE CONTROL INTERFACE 15

DIGITAL FILTER CHARACTERISTICS 17 DAC FILTER RESPONSES 18

APPLICATIONS INFORMATION 19 RECOMMENDED EXTERNAL COMPONENTS 19 RECOMMENDED ANALOGUE LOW PASS 20 RELEVANT APPLICATION NOTES 20

PACKAGE 21

IMPORTANT NOTICE 22 ADDRESS 22

Production Data

PIN CONFIGURATION

WM1824B
16-LEAD TSSOP TOP VIEW
ORDERING INFORMATION

ORDER CODE

TEMPERATURE RANGE

WM1824BGEDT/R

Note Reel quantity = 2,000
−40°C to +85°C −40°C to +85°C

PACKAGE
16-lead TSSOP pb-free
16-lead TSSOP pb-free, tape and reel

MOISTURE SENSITIVITY

LEVEL MSL1

MSL1

PEAK SOLDERING TEMPERATURE
260oC
260oC

WM1824B

PIN DESCRIPTION

PIN NO 1 2 3

NAME AGND AVDD VMID

TYPE Supply Analogue Out

Digital Input

LRCLK

Digital Input

DACDAT

Digital Input

BCLK

Digital Input

MCLK

Digital Input

DBVDD

Supply

LINEVDD

Supply

CPCA

Analogue Out

LINEGND

Supply

CPCB

Analogue In

CPVOUTN

Analogue Out
The Moisture Sensitivity Level for each package type is specified in Ordering Information.

CONDITION AVDD, LINEVDD, DBVDD Voltage range digital inputs Voltage range analogue inputs Temperature range, TA Storage temperature after soldering

Notes LINEVDD and AVDD must always be within 0.3V of each other.

MIN -0.3V AGND -0.3V AGND -0.3V -40°C -65°C

MAX +4.5V AVDD +0.3V AVDD +0.3V +125°C +150°C

RECOMMENDED OPERATING CONDITIONS

PARAMETER Analogue supply range Ground Digital Buffer supply range

SYMBOL AVDD, LINEVDD AGND, LINEGND

DBVDD

TEST CONDITIONS

TYP 0 or

UNIT V

WM1824B

Production Data

ELECTRICAL CHARACTERISTICS

Test Conditions LINEVDD=AVDD=DBVDD=3.3V, LINEGND=AGND=0V, TA=+25°C, fs=48kHz, MCLK=256fs, 24-bit data, unless otherwise stated. BCLK transition as per Figure

PARAMETER

SYMBOL TEST CONDITIONS

UNIT

Analogue Output Levels Output Level

Load Impedance Load Capacitance
0dBFS
2.1xAVDD

No external RC filter

Vrms

With filter shown in Figure 14

DAC Performance

Signal to Noise Ratio

A-weighted

Un-weighted

Dynamic Range

RL = A-weighted

Total Harmonic Distortion
-1dBFS
0dBFS

AVDD + LINEVDD Power Supply Rejection Ratio

PSRR
100Hz 1kHz

Channel Separation

System Absolute Phase Channel Level Matching Mute Attenuation DC Offset at LINEVOUTL and LINEVOUTR
20kHz 1kHz 20Hz to 20kHz

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 WM1824BGEDT Datasheet file may be downloaded here without warranties.

Datasheet ID: WM1824BGEDT 523260