wm8860 Wolfson Microelectronics plc, wm8860 Datasheet

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wm8860

Manufacturer Part Number
wm8860
Description
Multi-channel High Definition Audio Codec
Manufacturer
Wolfson Microelectronics plc
Datasheet
w
DESCRIPTION
The WM8860 is a high performance multi-channel audio
CODEC designed for high performance portable PC audio
systems. The device offers full compatibility with the Intel High
Definition Audio (HDA) specification revision 1.0, allowing
seamless integration with industry-standard HDA controllers.
The WM8860 has two high performance stereo DACs to enable
four channels of high definition audio.
ground-referenced
advanced charge pump and DC servo technology to minimise
system cost and space without compromise on audio quality. A
balanced line output, which can provide a differential connection
to an external speaker amplifier, is also provided and enables
common mode noise rejection when these traces are routed
across a PCB.
The WM8860 also has two high performance stereo ADCs to
provide Hi-Fi quality analogue line-in and microphone input
digitisation. A low noise microphone bias with programmable
output voltage is provided. Additionally, the CODEC contains a
digital microphone interface capable of supporting up to four
independent digital microphones. One differential stereo input
is provided for line level signals, while one pseudo-differential
stereo input with integrated microphone preamplifier is provided.
The WM8860 also contains a S/PDIF transmitter which is fully
compatible with IEC-60958-3. Two dedicated GPIO pins are
provided, enabling control of external amplifiers or other
additional system components.
The WM8860 is supplied in a small 48-pin QFN package.
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Multi-Channel High Definition Audio CODEC
stereo
headphone
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A high-performance
amplifier
utilises
FEATURES
APPLICATIONS
Multi-channel High Definition Audio CODEC
Fully compatible with Intel High Definition Audio Revision 1.0
4-Channel DAC, 4-channel ADC
DAC sampling frequency 8kHz - 192kHz
ADC sampling frequency 8kHz - 96kHz
DAC Performance:
-
-
-
ADC Performance:
-
-
-
Ground-referenced stereo headphone driver
Differential line inputs/outputs
Stereo microphone interface with integrated pre-amp
Multi-channel digital microphone interface
IEC-60958-3 compatible S/PDIF transmitter
Jack detect and load impedance sensing
Beep generator
GPIO functionality
IEEE-754 Single precision 32-bit floating point support
Power supplies
-
-
-
-
48-pin 7mm x 7mm QFN package
High performance PC audio
All-in-one desktop PC
Notebook PC
SNR 108 dB (‘A’ weighted)
SNR 105dB (non weighted)
THD -96dB (at 0dBFS)
SNR 105 dB (‘A’ weighted)
SNR 102dB (non weighted)
THD -95dB (at -1dBFS)
Digital core:
Digital buffer:
Analogue:
Charge pump: 4.5V – 5.5V
1.62V – 1.98V
2.97V – 3.63V
Copyright ©2010 Wolfson Microelectronics plc
4.5V – 5.5V
Product Brief, January 2011, Rev 3.0
WM8860

Related parts for wm8860

wm8860 Summary of contents

Page 1

... The WM8860 also contains a S/PDIF transmitter which is fully compatible with IEC-60958-3. Two dedicated GPIO pins are provided, enabling control of external amplifiers or other additional system components. The WM8860 is supplied in a small 48-pin QFN package. WOLFSON MICROELECTRONICS plc To receive regular email updates, sign up at FEATURES • ...

Page 2

... WM8860 DESCRIPTION ....................................................................................................... 1 FEATURES............................................................................................................. 1 APPLICATIONS ..................................................................................................... 1 TABLE OF CONTENTS ......................................................................................... 2 BLOCK DIAGRAM ................................................................................................. 3 PIN CONFIGURATION ........................................................................................... 4 ORDERING INFORMATION .................................................................................. 4 PIN DESCRIPTION ................................................................................................ 5 ABSOLUTE MAXIMUM RATINGS ......................................................................... 6 RECOMMENDED OPERATING CONDITIONS ..................................................... 6 ELECTRICAL CHARACTERISTICS ...................................................................... 7 TERMINOLOGY ........................................................................................................... 18 INTRODUCTION .................................................................................................. 19 APPLICATIONS INFORMATION ......................................................................... 20 RECOMMENDED EXTERNAL COMPONENTS ........................................................... 20 REQUIRED JACK DETECT COMPONENTS ............................................................... 21 PACKAGE DIMENSIONS .................................................................................... 22 IMPORTANT NOTICE .......................................................................................... 23 ADDRESS: ................................................................................................................... 23 w TABLE OF CONTENTS Product Brief Product Brief, January 2011, Rev 3 ...

Page 3

... Product Brief BLOCK DIAGRAM w WM8860 Product Brief, January 2011, Rev 3.0 3 ...

Page 4

... DGND 12 13 ORDERING INFORMATION ORDER CODE TEMPERATURE RANGE WM8860GEFL/V -40°C to +85°C WM8860GEFL/RV -40°C to +85°C Note: Reel quantity = 2200 WM8860 PACKAGE 48-pin QFN (Pb-free) 48-pin QFN (Pb-free, tape and reel HPVDD 35 ...

Page 5

... Charge pump supply input Analogue ground (return path for AVDD and CPVDD) Analogue supply input Analogue positive reference decoupling point Midrail voltage decoupling point Analogue negative reference decoupling point Jack detect sense 1 Jack detect sense 2 WM8860 DESCRIPTION Product Brief, January 2011, Rev 3.0 5 ...

Page 6

... WM8860 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 therefore generically susceptible to damage from excessive static voltages ...

Page 7

... C, 1kHz signal 48kHz, 24-bit data unless otherwise stated. A TEST CONDITIONS 0dB gain 0dB gain -12dB gain 0dB gain IN +12dB gain 20Hz to 20kHz Guaranteed monotonic WM8860 MIN TYP MAX UNIT V 2.25 x RMS AVDD/5 1 RMS AVDD/5 42 kΩ 27 kΩ ...

Page 8

... WM8860 Test Conditions AVDD = CPVDD = 5V, DBVDD = 3.3V, DCVDD = 1.8V, T PARAMETER SYMBOL Analogue Input 2 (VIN2LP, VIN2LN, VIN2RP, VIN2RN) Maximum Differential V INDIFF(max) Input Signal Level Maximum Single-ended V INSE(max) Input Signal Level Input impedance Z Common Mode Rejection CMRR Ratio Microphone Preamp Gain Options Minimum PGA Gain ...

Page 9

... C, 1kHz signal 48kHz, 24-bit data unless otherwise stated. A TEST CONDITIONS Unweighted A-weighted A-weighted fs=96kHz A-weighted -60dBFS -1dBFS -1dBFS fs=96kHz 1kHz 20Hz to 20kHz 0dBFS 1kHz, 100mVpp on AVDD 20Hz to 20kHz, 100mVpp on AVDD WM8860 MIN TYP MAX UNIT 102 dB 100 105 dB 105 dB 105 dB -95 -90 dB ...

Page 10

... WM8860 Test Conditions AVDD = CPVDD = 5V, DBVDD = 3.3V, DCVDD = 1.8V, T PARAMETER SYMBOL ADC2 Performance Signal to Noise Ratio SNR Dynamic Range DNR Total Harmonic Distortion THD Channel Separation Channel Level Matching Channel Phase Deviation Power Supply Rejection PSRR Ratio Test Conditions AVDD = CPVDD = 5V, DBVDD = 3.3V, DCVDD = 1.8V, T ...

Page 11

... Minimum Digital Gain Setting Maximum Digital Gain Setting Digital Gain Step Size +25 C, 1kHz signal 48kHz, 24-bit data unless otherwise stated. A TEST CONDITIONS MIN Product Brief, January 2011, Rev 3.0 WM8860 TYP MAX UNIT 1.024 1.4112 2.048 MHz 2.8224 3.072 96 dB -12 ...

Page 12

... WM8860 Test Conditions AVDD = CPVDD = 5V, DBVDD = 3.3V, DCVDD = 1.8V, T PARAMETER SYMBOL Analogue Output 1 (VOUT1L, VOUT1R) Full Scale Output Signal V OUT Level Maximum Rated Output P OUT(max) Power Load Impedance R Load Capacitance C DC Offset Analogue Output 2 (VOUT2L, VOUT2LN, VOUT2RP, VOUT2RN) Differential Full Scale V OUT Output Signal Level ...

Page 13

... A-weighted fs=96kHz Fs > 11.025kHz Fs <= 11.025kHz A-weighted -60dBFS 0dBFS 0dBFS fs=96kHz 1kHz 20Hz to 20kHz 0dBFS 1kHz, 100mVpp on AVDD 20Hz to 20kHz, 100mVpp on AVDD 1kHz, 100mVpp on CPVDD 20Hz to 20kHz, 100mVpp on CPVDD WM8860 MIN TYP MAX UNIT 105 dB 100 108 dB 108 108 dB ...

Page 14

... WM8860 Test Conditions AVDD = CPVDD = 5V, DBVDD = 3.3V, DCVDD = 1.8V, T PARAMETER SYMBOL DAC1 Path Performance (VOUT1L and VOUT1R into 16Ω Headphone Load) Total Harmonic Distortion THD Idle Channel Noise Channel Separation +25 C, 1kHz signal 48kHz, 24-bit data unless otherwise stated. A TEST CONDITIONS P = 30mW ...

Page 15

... C, 1kHz signal 48kHz, 24-bit data unless otherwise stated. A TEST CONDITIONS Unweighted A-weighted A-weighted fs=96kHz Fs > 11.025kHz Fs <= 11.025kHz A-weighted -60dBFS 0dBFS 0dBFS fs=96kHz 20Hz to 20kHz 0dBFS 1kHz, 100mVpp on AVDD 20Hz to 20kHz, 100mVpp on AVDD WM8860 MIN TYP MAX UNIT 103 dB 100 106 dB 106 106 dB -92 dB ...

Page 16

... WM8860 Test Conditions AVDD = CPVDD = 5V, DBVDD = 3.3V, DCVDD = 1.8V, T PARAMETER SYMBOL S/PDIF Transmitter Specification Output Signal Logic High V OH(S/PDIF) Output Signal Logic Low V OL(S/PDIF) Output Current Source/Sink Capability Output Sample Rate Tolerance Output Sample Rate Support +25 C, 1kHz signal 48kHz, 24-bit data unless otherwise stated. ...

Page 17

... C, 1kHz signal 48kHz, 24-bit data unless otherwise stated. A TEST CONDITIONS AVDD to VMID or VMID to AGND VMID_SEL[1:0]=00 AVDD to VMID or VMID to AGND VMID_SEL[1:0]=01 AVDD to VMID or VMID to AGND VMID_SEL[1:0]=10 AVDD to VMID or VMID to AGND VMID_SEL[1:0]= WM8860 MIN TYP MAX UNIT 0 AVDD 0 AVDD 0 AVDD 3.15 V 12.5 kΩ ...

Page 18

... WM8860 TERMINOLOGY 1. Signal-to-Noise Ratio (dB) – SNR is a measure of the difference in level between the full scale output signal and the output with no input signal applied. 2. Total Harmonic Distortion (dB) – THD is the level of the rms value of the sum of harmonic distortion products relative to the amplitude of the applied input signal ...

Page 19

... This datasheet assumes familiarity with the High Definition Audio Specification Revision 1.0, available from http://www.intel.com/standards/hdaudio/. WM8860 which are as defined in the High Definition Audio Specification Revision 1.0 there is no detailed text describing their use in this datasheet. However, detailed text describing the function of of vendor-specific verbs is provided. Additionally, a full list of each node and each verb implemented in the WM8860 is provided at the rear of the document ...

Page 20

... Figure 1 Recommended External Components Notes: 1. AC-coupling capacitors for inputs may depend on circuitry used prior to WM8860. Typical values between 1μF and 10μF are common – consult any documentation for the exact circuit used 2. AC-coupling capacitors for outputs may depend in circuitry used after WM8860. Typical values between 1μF and 10μ ...

Page 21

... REQUIRED JACK DETECT COMPONENTS Figure 2 Required Jack Detect Components The WM8860 supports jack detect on all analogue input and output ports, as well as on the S/PDIF output. This is implemented as per the High Definition Audio Specification Revision 1.0, section 7.4.2 and as such requires the resistor values shown in Figure 2 above. Note that, as per the High Definition Audio Specification requirement that the tolerance on these resistors better ...

Page 22

... WM8860 PACKAGE DIMENSIONS FL: 48 PIN QFN PLASTIC PACKAGE EXPOSED GND PADDLE Symbols Dimensions (mm) MIN NOM A 0.75 0 0.035 0. 0.203 REF b 0.20 0.25 D 7.00 BSC D2 5.55 5.65 E 7.00 BSC E2 5.55 5.65 e 0.5 BSC L 0.35 0.4 Tolerances of Form and Position aaa 0.10 bbb 0.08 0.10 ccc REF JEDEC, MO-220 NOTES: 1 ...

Page 23

... Wolfson is not liable for any such representations, warranties or liabilities or for any reliance placed thereon by any person. ADDRESS: Wolfson Microelectronics plc 26 Westfield Road Edinburgh EH11 2QB United Kingdom Tel :: +44 (0)131 272 7000 Fax :: +44 (0)131 272 7001 Email :: sales@wolfsonmicro.com w WM8860 Product Brief, January 2011, Rev 3.0 23 ...

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