Datasheet.kr   

WM8956 데이터시트 PDF




Wolfson Microelectronics에서 제조한 전자 부품 WM8956은 전자 산업 및 응용 분야에서
광범위하게 사용되는 반도체 소자입니다.


PDF 형식의 WM8956 자료 제공

부품번호 WM8956 기능
기능 Hi-Fi DAC
제조업체 Wolfson Microelectronics
로고 Wolfson Microelectronics 로고


WM8956 데이터시트 를 다운로드하여 반도체의 전기적 특성과 매개변수에 대해 알아보세요.




전체 30 페이지수

미리보기를 사용할 수 없습니다

WM8956 데이터시트, 핀배열, 회로
w
WM8956
Hi-Fi DAC with 1W Stereo Class D Speaker Drivers and
Headphone Drivers
DESCRIPTION
FEATURES
The WM8956 is a low power, high quality stereo DAC designed
for portable multimedia applications.
Stereo class D speaker drivers provide 1W per channel into 8
loads with a 5V supply. Low leakage, excellent PSRR and
pop/click suppression mechanisms also allow direct battery
connection to the speaker supply. Flexible speaker boost
settings allow speaker output power to be maximised while
minimising other analogue supply currents.
A highly flexible input configuration for up to three stereo
sources is integrated, with a complete microphone interface.
External component requirements are drastically reduced as no
separate microphone, speaker or headphone amplifiers are
required.
Stereo 24-bit sigma-delta DACs are used with low power over-
sampling digital interpolation filters and a flexible digital audio
interface.
The master clock can be input directly or generated internally by
an onboard PLL, supporting most commonly-used clocking
schemes.
The WM8956 operates at analogue supply voltages down to
2.7V, although the digital supplies can operate at voltages down
to 1.71V to save power. The speaker supply can operate at up
to 5.5V, providing 1W per channel into 8loads. Unused
functions can be disabled using software control to save power.
The WM8956 is supplied in a very small and thin 5x5mm QFN
package, ideal for use in hand-held and portable systems.
DAC SNR 99dB (‘A’ weighted), THD -87dB at 48kHz, 3.3V
Pop and click suppression
3D Enhancement
Stereo Class D Speaker Driver
- <0.1% THD with 1W per channel into 8BTL speakers
- 70dB PSRR @217Hz
- 87% efficiency (1W output)
- Flexible internal switching clock
On-chip Headphone Driver
- 40mW output power into 16at 3.3V
- Capless mode support
- THD+N -70dB at 20mW, SNR 99dB with 16load
Microphone Interface
- Pseudo differential for high noise immunity
- Integrated low noise MICBIAS
Low Power Consumption
- 16mW headphone playback (2.7V / 1.8V supplies)
Low Supply Voltages
- Analogue 2.7V to 3.6V (Speaker supply up to 5.5V)
- Digital core and I/O: 1.71V to 3.6V
On-chip PLL provides flexible clocking scheme
Sample rates: 8, 11.025, 12, 16, 22.05, 24, 32, 44.1, 48
5x5x0.9mm QFN package
APPLICATIONS
Mobile multimedia
Portable media / DVD players
Games consoles
DGND
DCVDD
LINPUT3/
JD2
Jack Detect
LINPUT2
LINPUT1
vmid
RINPUT1
vmid
RINPUT2
-17.25 to +30dB,
0.75dB steps
+
-12 -> 6dB,
3dB steps,
mute
-
0, 13, 20, 29dB, mute
-12 -> 6dB,
3dB steps,
mute
+
INPUT
PGAs
W
WM8956
- 0, 13, 20, 29dB, mute
+
-17.25 to +30dB,
0.75dB steps
-12 -> 6dB,
3dB steps,
mute
+
-12 -> 6dB,
3dB steps,
mute
RINPUT3/
JD3
MICBIAS
Jack Detect
50K 50K
DACREF
DBVDD
0 to -21dB,
3dB steps
0 to -21dB,
3dB steps
DAC DIGITAL FILTERS
DE-EMPHASIS
3D ENHANCE
VOLUME
DAC
DAC
DIGITAL AUDIO
INTERFACE
A-law and u-law support
0 to -21dB,
3dB steps
0 to -21dB,
3dB steps
GPIO1
PLL
LEFT
MIXER
MONO
MIXER
CLASS D
SPKVDD1
SPKVDD2
SPK_LP
-73 to 6dB
1dB steps,
mute
+BOOST
SPK_LN
-73 to 6dB
1dB steps,
mute
0dB / -6dB
HP_L
OUT3
RIGHT
MIXER
HP_R
-73 to 6dB
1dB steps,
mute
CLASS D
SPK_RN
CONTROL
INTERFACE
-73 to 6dB
1dB steps,
mute
+BOOST
SPK_RP
SPKGND1
SPKGND2
WOLFSON MICROELECTRONICS plc
To receive regular email updates, sign up at http://www.wolfsonmicro.com/enews
Production Data, November 2011, Rev 4.1
Copyright 2011 Wolfson Microelectronics plc




WM8956 pdf, 반도체, 판매, 대치품
WM8956
PIN DESCRIPTION
Production Data
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
33
NAME
MICBIAS
LINPUT3 / JD2
LINPUT2
LINPUT1
RINPUT1
RINPUT2
RINPUT3 / JD3
DCVDD
DGND
DBVDD
MCLK
BCLK
DACLRC
DACDAT
GPIO1
DNC
SCLK
SDIN
SPK_RN
SPKGND2
SPKVDD2
SPK_RP
SPK_LN
SPKGND1
SPK_LP
SPKVDD1
VMID
AGND
HP_R
OUT3
HP_L
AVDD
GND_PADDLE
TYPE
Analogue Output
Analogue Input
Analogue Input
Analogue Input
Analogue Input
Analogue Input
Analogue Input
Supply
Supply
Supply
Digital Input
Digital Input / Output
Digital Input / Output
Digital Input
Digital Input / Output
Do not connect
Digital Input
Digital Input/Output
Analogue Output
Supply
Supply
Analogue Output
Analogue Output
Supply
Analogue Output
Supply
Analogue Output
Supply
Analogue Output
Analogue Output
Analogue Output
Supply
DESCRIPTION
Microphone bias
Left channel line input /
Left channel positive differential MIC input /
Jack detect input pin
Left channel line input /
Left channel positive differential MIC input
Left channel single-ended MIC input /
Left channel negative differential MIC input
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 positive differential MIC input /
Jack detect input pin
Digital core supply
Digital ground (Return path for both DCVDD and DBVDD)
Digital buffer (I/O) supply
Master clock
Audio interface bit clock
Audio interface DAC left / right clock
DAC digital audio data
GPIO1 pin
Leave this pin floating
Control interface clock input
Control interface data input / 2-wire acknowledge output
Right speaker negative output
Ground for speaker drivers 2
Supply for speaker drivers 2
Right speaker positive output
Left speaker negative output
Ground for speaker drivers 1
Left speaker positive output
Supply for speaker drivers 1
Midrail voltage decoupling capacitor
Analogue ground (Return path for AVDD)
Right output (Line or headphone)
Mono, left, right or buffered midrail output for capless mode
Left output (Line or headphone)
Analogue supply
Die Paddle (Note 1)
Note:
1. It is recommended that the QFN ground paddle should be connected to analogue ground on the application PCB.
2. Refer to the application note WAN_0118 on “Guidelines on How to Use QFN Packages and Create Associated PCB
Footprints”
w
PD, November 2011, Rev 4.1
4

4페이지










WM8956 전자부품, 판매, 대치품
Production Data
WM8956
Test Conditions
DCVDD = 1.8V, DBVDD = 3.3V, AVDD = SPKVDD1 = SPKVDD2 = 3.3V, TA = +25oC, 1kHz signal, fs = 48kHz, PGA gain = 0dB,
24-bit audio data unless otherwise stated.
PARAMETER
SYMBOL TEST CONDITIONS
MIN
TYP
MAX
UNIT
DAC to Line-Out (HP_L or HP_R with 10k/ 50pF load)
Signal to Noise Ratio
SNR
AVDD=3.3V
90 99
dB
(A-weighted)
AVDD=2.7V
98
Total Harmonic Distortion Plus
Noise
THD+N
AVDD=3.3V
AVDD=2.7V
-85 -80 dB
-90
Total Harmonic Distortion
THD
AVDD=3.3V
-87 -80 dB
AVDD=2.7V
-92
Channel Separation
1kHz full scale signal
110
dB
DAC to Line-Out (OUT3 with 10k/ 50pF load)
Signal to Noise Ratio
SNR
AVDD=3.3V
99 dB
(A-weighted)
AVDD=2.7V
98
Total Harmonic Distortion Plus
Noise
THD+N
AVDD=3.3V
AVDD=2.7V
-85 dB
-90
Total Harmonic Distortion
THD
AVDD=3.3V
-87 dB
AVDD=2.7V
-92
Channel Separation
1kHz full scale signal
110
dB
Headphone Output (HP_L, HP_R, using capacitors unless otherwise specified)
Output Power per channel
Total Harmonic Distortion Plus
Noise
PO
THD+N
Output power is very closely correlated with THD; see below.
AVDD=2.7V, RL=32
-78
PO=5mW
0.013
AVDD=2.7V, RL=16
-75
PO=5mW
0.018
AVDD=3.3V, RL=32,
PO=20mW
-72
0.025
dB
%
AVDD=3.3V, RL=16,
PO=20mW
-70
0.032
Signal to Noise Ratio
SNR
AVDD = 3.3V
92 99
dB
(A-weighted)
AVDD = 2.7V
98
Speaker Outputs (DAC to SPK_LP, SPK_LN, SPK_RP, SPK_RN with 8bridge tied load)
Output Power
Total Harmonic Distortion Plus
Noise
(DAC to speaker outputs)
PO
THD+N
Output power is very closely correlated with THD; see below
PO =200mW, RL = 8,
SPKVDD1=SPKVDD2
=3.3V; AVDD=3.3V
-78
0.013
dB
%
PO =320mW, RL = 8,
SPKVDD1=SPKVDD2
=3.3V; AVDD=3.3V
-72
0.025
dB
%
PO =500mW, RL = 8,
SPKVDD1=SPKVDD2
=5V; AVDD=3.3V
-75
0.018
dB
%
PO =1W, RL = 8,
SPKVDD1=SPKVDD2
=5V; AVDD=3.3V
-70
0.032
dB
%
w
PD, November 2011, Rev 4.1
7

7페이지


구       성 총 30 페이지수
다운로드[ WM8956.PDF 데이터시트 ]

당사 플랫폼은 키워드, 제품 이름 또는 부품 번호를 사용하여 검색할 수 있는

포괄적인 데이터시트를 제공합니다.


구매 문의
일반 IC 문의 : 샘플 및 소량 구매
-----------------------------------------------------------------------

IGBT, TR 모듈, SCR 및 다이오드 모듈을 포함한
광범위한 전력 반도체를 판매합니다.

전력 반도체 전문업체

상호 : 아이지 인터내셔날

사이트 방문 :     [ 홈페이지 ]     [ 블로그 1 ]     [ 블로그 2 ]



관련 데이터시트

부품번호상세설명 및 기능제조사
WM8950

ADC WITH MICROPHONE INPUT AND PROGRAMMABLE DIGITAL FILTERS

Wolfson Microelectronics plc
Wolfson Microelectronics plc
WM8951L

Stereo ADC with Microphone Input and Clock Generator

Wolfson Microelectronics plc
Wolfson Microelectronics plc

DataSheet.kr       |      2020   |     연락처      |     링크모음      |      검색     |      사이트맵