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PDF WM8959 Data sheet ( Hoja de datos )
| Número de pieza | WM8959 | |
| Descripción | Mobile Multimedia DAC | |
| Fabricantes | Wolfson Microelectronics plc | |
| Logotipo |  |
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WM8959
Mobile Multimedia DAC with
Dual-Mode Class AB/D Speaker Driver
DESCRIPTION
FEATURES
The WM8959 is an ultra-low power hi-fi DAC designed for
multimedia handsets.
A powerful 1W speaker driver can operate in class D or AB
modes, providing total flexibility to the system designer. Low
leakage, high PSRR and pop/click suppression enable direct
battery connection for the speaker supply.
A flexible input configuration supports two microphone inputs
(single-ended or differential), a stereo line input, and a mono
differential line input.
Four headphone drivers support fully differential headset drive,
providing excellent crosstalk performance and bass response,
maximising stereo effects, and allowing the removal of large
and expensive headphone capacitors. The headphone outputs
can also be configured to drive an ear speaker. A fully
differential path to these outputs direct from the input pins is
available to maximise signal quality and minimise power
consumption.
Stereo 24-bit sigma-delta DACs provide hi-fi quality audio
playback, with a flexible digital audio interface supporting most
commonly-used clocking schemes. An integrated low power
PLL provides additional flexibility.
The WM8959 is supplied in very small and thin 42-ball WCSP
package, ideal for portable systems.
• DAC SNR 99dB (‘A’ weighted), THD -84dB at 48kHz, 3.3V
• Stereo microphone interface
• 1W Speaker driver
- 1W into 8Ω BTL speaker at <0.1% THD
- 80dB PSRR @ 217Hz
- <1uA leakage with direct battery connection
- Software-selectable class D or AB mode
- Filterless connection supported
• Headphone / ear speaker drivers
- 40mW output power into 16Ω at 3.3V
- Fully differential and capless modes supported
- Low noise, lower power received voice path
• Stereo or Mono differential line output
• Pop/Click suppression
• Powerful GPIO functions
• Ultra-low power consumption
- 8.3mW analogue voice call
- 13.7mW DAC playback to headphones
• On-chip PLL provides flexible clocking scheme
• Sample rates: 8, 11.025, 12, 16, 22.05, 24, 32, 44.1, 48kHz
• 42-ball WCSP package (3.226x3.44x0.7mm, 0.5mm pitch)
APPLICATIONS
• Multimedia phones
• GPS
WOLFSON MICROELECTRONICS plc
To receive regular email updates, sign up at http://www.wolfsonmicro.com/enews/
Pre-Production, May 2008, Rev 3.1
Copyright ©2008 Wolfson Microelectronics plc
1 page  
www.DataSheet4U.com
Pre-Production
WM8959
PIN DESCRIPTION
PIN NO
A2
D3
NAME
MICBIAS
LIN1
TYPE
Analogue Output
Analogue Input
C5
LIN2
Analogue Input
C6
LIN3 /
Analogue Input /
GPI7
Digital Input
B6
LIN4 /
Analogue Input
RXN
D4
RIN1
Analogue Input
D6
RIN2
Analogue Input
D5
RIN3 /
Analogue Input /
GPI8
Digital Input
E5
RIN4 /
Analogue Input
RXP
F6 DCVDD
E6 DGND
G6 DBVDD
A6 AVDD
A3 AGND
A5 HPVDD
B3 HPGND
B2 SPKVDD
B1 SPKGND
F5 MCLK
G5 BCLK
G4 DACLRC
F3 DACDAT
E4 GPIO1
E2 MODE
F2 CSB / ADDR
F1 SCLK
E3 SDIN
A1 SPKP
C1 SPKN
B4 LOUT
B5 ROUT
A4 OUT3
C4 OUT4
C2 LON
D1 LOP
D2 RON
E1 ROP
C3 VMID
G2 GPIO3 /
BCLK2
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Supply
Supply
Supply
Supply
Supply
Supply
Supply
Supply
Supply
Digital Input
Digital Input / Output
Digital Input / Output
Digital Input
Digital Input / Output
Digital Input
Digital Input
Digital Input
Digital Input / Output
Analogue Output
Analogue Output
Analogue Output
Analogue Output
Analogue Output
Analogue Output
Analogue Output
Analogue Output
Analogue Output
Analogue Output
Analogue Output
Digital Input / Output
DESCRIPTION
Microphone bias
Left channel single-ended MIC input /
Left channel negative differential MIC input
Left channel line input /
Left channel positive differential MIC input
Left channel line input /
Left channel negative differential MIC input /
Accessory or button detect input pin
Left channel line input /
Left channel positive differential MIC input /
Mono differential negative input (Rx voice -)
Right channel single-ended MIC input /
Right channel negative differential MIC input
Right channel line input /
Right channel positive differential MIC input
Right channel line input /
Right channel negative differential MIC input /
Accessory or button detect input pin
Left channel line input /
Left channel positive differential MIC input /
Mono differential positive input (Rx voice +)
Digital core supply
Digital ground (Return path for both DCVDD and DBVDD)
Digital buffer (I/O) supply
Analogue supply
Analogue ground (Return path for AVDD)
Headphone supply
Headphone ground (Return path for HPVDD)
Supply for speaker driver
Ground for speaker driver (Return path from SPKVDD)
Master clock
Audio interface bit clock
Audio interface DAC left / right clock
DAC digital audio data
GPIO1 pin
Selects 2-wire or 3/4 -wire control
3/4 -wire chip select or 2-wire address select
Control interface clock input
Control interface data input / 2-wire acknowledge output
Speaker positive output
Speaker negative output
Left headphone output
Right headphone output
Inverted left headphone output / Mono inverted output
Inverted right headphone output / Mono non-inverted output
Negative left line output / Positive right line output
Positive left line output
Negative right line output / Positive left line output
Positive right line output
Midrail voltage decoupling capacitor
Alternative BCLK / GPIO pin
PP, May 2008, Rev 3.1
5
5 Page 
www.DataSheet4U.com
Pre-Production
WM8959
ELECTRICAL CHARACTERISTICS
Test Conditions
DCVDD = 1.8V, DBVDD = 3.3V, AVDD = HPVDD = 3.3V, SPKVDD = 5V, TA = +25oC, 1kHz signal, fs = 48kHz,
PGA gain = 0dB, 24-bit audio data unless otherwise stated.
PARAMETER
TEST CONDITIONS
MIN
Analogue Input Pin Maximum Signal Levels (LIN1, LIN2, LIN3, LIN4, RIN1, RIN2, RIN3, RIN4)
A1 Maximum Full-Scale PGA
Single-ended PGA
Input Signal Level
input on LIN1, LIN3,
RIN1 or RIN3, output
Note 1: This changes in
to INMIXL or INMIXR
proportion to AVDD
(AVDD/3.3).
Differential PGA input
on LIN1/LIN2,
LIN3/LIN4, RIN1/RIN2
Note 2: When mixing input
PGA outputs and line
inputs the total signal
must not exceed 1Vrms
(0dBV).
or RIN3/RIN4, output
to INMIXL or INMIXR
Differential input to
two single-ended PGA
inputs on LIN1/LIN3
or RIN1/RIN3, output
Note 3: A 1.0Vrms
differential signal equates
to DIFFINL or
DIFFINR
to 0.5Vrms/-6dBV per
input.
A2 Maximum Full-Scale Line
Line input on LIN2,
Input Signal Level
LIN4, RIN2 or RIN4 to
INMIXL or INMIXR
Note 1: This changes in
proportion to AVDD
(AVDD/3.3).
Note 2: When mixing line
inputs, input PGA outputs
and DAC outputs the total
signal must not exceed
1Vrms (0dBV).
Line input on LIN2 or
RIN2 to SPKMIX
TYP
1.0
0
1.0
0
1.0
0
1.0
0
1.0
0
Note 3: A 1.0Vrms
differential signal equates
to 0.5Vrms/-6dBV per
input.
Line input on LIN3 or
RIN3 to LOMIX or
ROMIX
1.0
0
MAX
UNIT
Vrms
dBV
Vrms
dBV
Vrms
dBV
Vrms
dBV
Vrms
dBV
Vrms
dBV
Differential mono line
input on RXP/RXN to
RXVOICE
Differential mono line
input on RXP/RXN to
differential output on
OUT3/OUT4
1.0 Vrms
0 dBV
1.0 Vrms
0 dBV
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PP, May 2008, Rev 3.1
11
11 Page | ||
| Páginas | Total 70 Páginas | |
| PDF Descargar | [ Datasheet WM8959.PDF ] | |
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