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WM8750BL 데이터시트 PDF




Wolfson Microelectronics에서 제조한 전자 부품 WM8750BL은 전자 산업 및 응용 분야에서
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부품번호 WM8750BL 기능
기능 Stereo CODEC
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WM8750BL 데이터시트, 핀배열, 회로
w
WM8750BL
Stereo CODEC for Portable Audio Applications
DESCRIPTION
The WM8750BL is a low power, high quality stereo CODEC
designed for portable digital audio applications.
The device integrates complete interfaces to stereo or mono
microphones and a stereo headphone. External component
requirements are drastically reduced as no separate
microphone or headphone amplifiers are required.
Advanced on-chip digital signal processing performs graphic
equaliser, 3-D sound enhancement and automatic level
control for the microphone or line input.
The WM8750BL can operate as a master or a slave, with
various master clock frequencies including 12 or 24MHz for
USB devices, or standard 256fs rates like 12.288MHz and
24.576MHz. Different audio sample rates such as 96kHz,
48kHz, 44.1kHz are generated directly from the master
clock without the need for an external PLL.
The WM8750BL operates at supply voltages down to 1.8V,
although the digital core can operate at voltages down to
1.42V to save power, and the maximum for all supplies is
3.6 Volts. Different sections of the chip can also be powered
down under software control.
The WM8750BL is supplied in a very small and thin 5x5mm
QFN package, ideal for use in hand-held and portable
systems.
BLOCK DIAGRAM
FEATURES
DAC SNR 97dB (‘A’ weighted), THD -85dB at 48kHz, 3.3V
ADC SNR 88dB (‘A’ weighted), THD -80dB at 48kHz, 3.3V
Complete Stereo / Mono Microphone Interface
- Programmable ALC / Noise Gate
On-chip 400mW BTL Speaker Driver (mono)
On-chip Headphone Driver
- >40mW output power on 16/ 3.3V
- THD –73dB at 5mW, SNR 98dB with 16load
- No DC blocking capacitors required (capless mode)
Separately mixed mono output
Digital Graphic Equaliser
Low Power
- 6 mW stereo playback (1.8V / 1.5V supplies)
- 13 mW record & playback (1.8V / 1.5V supplies)
Low Supply Voltages
- Analogue 1.8V to 3.6V
- Digital core: 1.42V to 3.6V
- Digital I/O: 1.8V to 3.6V
256fs / 384fs or USB master clock rates: 12MHz, 24MHz
Audio sample rates: 8, 11.025, 16, 22.05, 24, 32, 44.1, 48,
88.2, 96kHz generated internally from master clock
5x5x0.9mm QFN package
APPLICATIONS
Portable Media Player
Mobile phone handsets
Mobile gaming
WOLFSON MICROELECTRONICS plc
To receive regular email updates, sign up at http://www.wolfsonmicro.com/enews
Production Data, August 2012, Rev 4.1
Copyright 2012 Wolfson Microelectronics plc




WM8750BL pdf, 반도체, 판매, 대치품
WM8750BL
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
Note:
NAME
MCLK
DCVDD
DBVDD
DGND
BCLK
DACDAT
DACLRC
ADCDAT
ADCLRC
MONOOUT
OUT3
ROUT1
LOUT1
HPGND
ROUT2
LOUT2
HPVDD
AVDD
AGND
VREF
VMID
MICBIAS
RINPUT3 /
HPDETECT
LINPUT3
RINPUT2
LINPUT2
RINPUT1
LINPUT1
MODE
CSB
SDIN
SCLK
TYPE
Digital Input
Supply
Supply
Supply
Digital Input / Output
Digital Input
Digital Input / Output
Digital Output
Digital Input / Output
Analogue Output
Analogue Output
Analogue Output
Analogue Output
Supply
Analogue Output
Analogue Output
Supply
Supply
Supply
Analogue Output
Analogue Output
Analogue Output
Analogue Input
Analogue Input
Analogue Input
Analogue Input
Analogue Input
Analogue Input
Digital Input
Digital Input
Digital Input/Output
Digital Input
DESCRIPTION
Master Clock
Digital Core Supply
Digital Buffer (I/O) Supply
Digital Ground (return path for both DCVDD and DBVDD)
Audio Interface Bit Clock
DAC Digital Audio Data
Audio Interface Left / Right Clock/Clock Out
ADC Digital Audio Data
Audio Interface Left / Right Clock
Mono Output
Analogue Output 3 (can be used as Headphone Pseudo Ground)
Right Output 1 (Line or Headphone)
Left Output 1 (Line or Headphone)
Supply for Analogue Output Drivers (LOUT1/2, ROUT1/2)
Right Output 1 (Line or Headphone or Speaker)
Left Output 1 (Line or Headphone or Speaker)
Supply for Analogue Output Drivers (LOUT1/2, ROUT1/2, MONOUT)
Analogue Supply
Analogue Ground (return path for AVDD)
Reference Voltage Decoupling Capacitor
Midrail Voltage Decoupling Capacitor
Microphone Bias
Right Channel Input 3 or Headphone Plug-in Detection
Left Channel Input 3
Right Channel Input 2
Left Channel Input 2
Right Channel Input 1
Left Channel Input 1
Control Interface Selection
Chip Select / Device Address Selection
Control Interface Data Input / 2-wire Acknowledge output
Control Interface Clock Input
It is recommended that the QFN ground paddle should be connected to analogue ground on the application PCB.
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PD, Rev 4.1, August 2012
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WM8750BL 전자부품, 판매, 대치품
Production Data
WM8750BL
Test Conditions
DCVDD = 1.5V, DBVDD = 3.3V, AVDD = HPVDD = 3.3V, TA = +25oC, 1kHz signal, fs = 48kHz, ADCOSR=1, DACOSR=1,
PGA gain = 0dB, 24-bit audio data unless otherwise stated.
PARAMETER
SYMBOL TEST CONDITIONS
MIN
TYP
MAX
UNIT
Speaker Output (LOUT2/ROUT2 with 8bridge tied load, ROUT2INV=1)
Output Power at 1% THD
PO THD = 1%
330 mW (rms)
Maximum Achievable Output
Power
Total Harmonic Distortion
Signal to Noise Ratio
(A-weighted)
Analogue Reference Levels
Midrail Reference Voltage
Buffered Reference Voltage
Microphone Bias
Bias Voltage
Bias Current Source
Output Noise Voltage
Digital Input / Output
Input HIGH Level
Input LOW Level
Output HIGH Level
Output LOW Level
HPDETECT (pin 23)
Input HIGH Level
Input LOW Level
POmax
AVDD=HPVDD=3.3V,
400
mW (rms)
RL=8
THD
Po=200mW, RL=8,
HPVDD=3.3V
-60
0.1
dB
%
SNR
HPVDD=3.3V, RL=8
95
dB
VMID
VREF
VMICBIAS
IMICBIAS
Vn
VIH
VIL
VOH
VOL
VIH
VIL
–3%
–3%
AVDD/2
AVDD/2
+3%
+3%
V
V
3mA load current
1K to 20kHz
–5%
0.9AVDD
15
+ 5%
3
V
mA
nV/Hz
IOH = +1mA
IOL = -1mA
0.7DBVDD
0.9DBVDD
0.7AVDD
0.3DBVDD
0.1DBVDD
0.3AVDD
V
V
V
V
V
V
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PD, Rev 4.1, August 2012
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부품번호상세설명 및 기능제조사
WM8750BL

Stereo CODEC

Wolfson Microelectronics
Wolfson Microelectronics

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