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參數(shù)資料
| 型號： | WM8722 |
| 廠商： | Wolfson Microelectronics |
| 英文描述： | Stereo DAC with Integrated Tone Generator and Line/Variable Level Outputs |
| 中文描述： | 立體聲DAC，具有集成的音調(diào)發(fā)生器和線/變平輸出 |
| 文件頁數(shù)： | 1/23頁 |
| 文件大小： | 438K |
| 代理商： | WM8722 |
WM8722
Stereo DAC with Integrated Tone Generator and
Line/Variable Level Outputs
Advanced Information, May 2000, Rev 1.5
WOLFSON MICROELECTRONICS LTD
Lutton Court, Bernard Terrace, Edinburgh, EH8 9NX, UK
Tel: +44 (0) 131 667 9386
Fax: +44 (0) 131 667 5176
Email: sales@wolfson.co.uk
http://www.wolfson.co.uk
Advanced Information
data sheets contain
preliminary data on new products in the
preproduction phase of development.
Supplementary data will be published at a
later date.
2000 Wolfson Microelectronics Ltd
.
DESCRIPTION
The WM8722 is a high performance stereo DAC designed
for audio applications such as digital TV and set top boxes.
The WM8722 has two stereo analogue outputs, one at line
level and one that includes a digitally controllable mute and
attenuator function. An on-board tone generator can be
routed through the line or variable outputs.
WM8722 supports data input word lengths from 16-24 bits
and sampling rates up to 96kHz. The WM8722 consists of a
serial interface port, digital interpolation filter, multi-bit sigma
delta modulator and stereo DAC in a small 20-pin SSOP
package.
The 3 or 2-wire serial MPU compatible control port provides
access to all features including tone generation, on-chip
mute, attenuation and phase reversal.
The programmable data input port supports glueless
interfaces to popular DSPs, audio decoders and S/PDIF
and AES/EBU receivers.
FEATURES
Performance
102dB SNR (‘A’ weighted @48kHz)
THD+N: -90dB @ F.S.
5V or 3V supply operation
Sampling frequency: 8kHz – 96kHz
3-wire or 2-wire serial MPU compatible interface for
Input data word; 16/20/24-Bit
Soft mute
De-emphasis
Volume control
On-board tone generator (1Hz – 32kHz, 0.1 – 25.5s)
Stereo analogue inputs
20-pin SSOP package
APPLICATIONS
Digital TV
Digital broadcast receivers
Set top boxes
BLOCK DIAGRAM
DIN (17)
BCKIN (19)
LRCIN (18)
SCKI (20)
SERIAL
INPUT
INTERFACE
TONE
GENERATOR
MD (3)
MC (2)
LATCH (4)
BUSY (5)
DIGITAL
ATTENUATOR
AND
FILTERS
MULTI
BIT
∑
TONE
DAC
MULTI
BIT
SC
DAC
DIGITAL
ATTENUATOR
AND
FILTERS
MULTI
BIT
∑
MULTI
BIT
SC
DAC
(7)
MXINR
MXINL(14)
(13)LINEOUTL
(12) VAROUTL
+6 to -73dB,
1dB Steps
(9) VAROUTR
(8) LINEOUTR
0 TO -46.5dB, 1.5dB
STEPS
(15)
CAP
(11)
AVDD
(10)
AGND
(6)
DGND
+
I2S/SDIF
16,18, 20
OR 24 BITS
TCLK (1)
+12 to -34.5dB, 1.5dB Steps
+
+
+
WM8722
0/-6dB
0/-6dB
0/-6dB
MONO ATTENUATION CONTROL
4
L Mix Switches (0-9)
+12 TO -34.5dB, 1.5dB
STEPS
(16)
DVDD
0/-6dB
R Mix Switches (0-9)
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相關代理商/技術參數(shù) |
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|---|---|
| WM8722_01 | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:Stereo DAC with Integrated Tone Generator and Line/Variable Level Outputs |
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| WM8725 | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:99dB Stereo DAC |
| WM8725_04 | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:99dB Stereo DAC |
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