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參數資料
| 型號： | UDA1342 |
| 廠商： | NXP Semiconductors N.V. |
| 元件分類： | Codec |
| 英文描述： | Audio CODEC |
| 中文描述： | 音頻編解碼器 |
| 文件頁數： | 10/44頁 |
| 文件大小： | 180K |
| 代理商： | UDA1342 |
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2000 Mar 29
10
Philips Semiconductors
Preliminary specification
Audio CODEC
UDA1342TS
handbook, full pagewidth
MGT019
BASS BOOST
AND
TREBLE
VOLUME
AND
MUTE
DE-EMPHASIS
VOLUME
AND
MUTE
master
VOLUME
AND
MUTE
to
digital
interface
output
from
digital
interface
input
from
decimation
filter
to
interpolation
filter
+
+
Fig.5 Digital mixer (DAC).
8.8
Noise shaper
The 5th-order noise shaper operates at 64f
s
. It shifts
in-band quantization noise to frequencies well above the
audio band. This noise shaping technique enables high
signal-to-noise ratios to be achieved. The noise shaper
output is converted into an analog signal using a Filter
Stream Digital-to-Analog Converter (FSDAC).
8.9
Filter stream DAC
The FSDAC is a semi-digital reconstruction filter that
converts the 1-bit data stream of the noise shaper to an
analog output voltage. The filter coefficients are
implemented as current sources and are summed at
virtual ground of the output operational amplifier. In this
way very high signal-to-noise performance and low clock
jitter sensitivity is achieved. A post-filter is not needed due
to the inherent filter function of the DAC. On-board
amplifiers convert the FSDAC output current to an output
voltage signal capable of driving a line output.
The output voltage of the FSDAC is proportionally to the
power supply voltage.
8.10
Digital interface
The UDA1342TS supports the following data input/output
formats for the various modes (see Fig.6).
L3-bus and I
2
C-bus mode:
I
2
S-bus format with data word length of up to 24 bits
MSB-justifiedserial formatwith datawordlength ofupto
24 bits
LSB-justified serial format with data word lengths of
16, 20 or 24 bits
MSB-justified data output and
LSB-justified 16, 20 and 24 bits data input.
Static pin mode:
I
2
S-bus format with data word length of up to 24 bits
MSB-justified data output and
LSB-justified 16, 20 and 24 bits data input.
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相關代理商/技術參數 |
參數描述 |
|---|---|
| UDA1342TS | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Audio CODEC |
| UDA1342TS/N1 | 制造商:NXP Semiconductors 功能描述:IC CODEC AUDIO MINIDISC 28-SSOP 制造商:NXP Semiconductors 功能描述:IC, CODEC, AUDIO, MINIDISC, 28-SSOP 制造商:NXP Semiconductors 功能描述:IC, CODEC, AUDIO, MINIDISC, 28-SSOP; Audio CODEC Type:Stereo Codec; No. of ADCs:4; No. of DACs:2; No. of Input Channels:4; No. of Output Channels:2; Audio IC Case Style:SSOP; No. of Pins:28; ADC / DAC Resolution:24bit; ADCs / DACs ;RoHS Compliant: Yes |
| UDA1342TS/N1,512 | 功能描述:接口—CODEC AUDIO CODEC MINIDISC RoHS:否 制造商:Texas Instruments 類型: 分辨率: 轉換速率:48 kSPs 接口類型:I2C ADC 數量:2 DAC 數量:4 工作電源電壓:1.8 V, 2.1 V, 2.3 V to 5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:DSBGA-81 封裝:Reel |
| UDA1342TS/N1,518 | 功能描述:接口—CODEC MINISOUND 3 RoHS:否 制造商:Texas Instruments 類型: 分辨率: 轉換速率:48 kSPs 接口類型:I2C ADC 數量:2 DAC 數量:4 工作電源電壓:1.8 V, 2.1 V, 2.3 V to 5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:DSBGA-81 封裝:Reel |
| UDA1342TSDB | 功能描述:接口—CODEC AUDIO CODEC MINIDISC RoHS:否 制造商:Texas Instruments 類型: 分辨率: 轉換速率:48 kSPs 接口類型:I2C ADC 數量:2 DAC 數量:4 工作電源電壓:1.8 V, 2.1 V, 2.3 V to 5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:DSBGA-81 封裝:Reel |
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