參數(shù)資料
型號： UDA1384
廠商： NXP Semiconductors N.V.
英文描述： Multichannel audio coder-decoder
中文描述： 多聲道音頻編碼解碼器
文件頁數(shù)： 9/55頁
文件大?。?/td> 276K
代理商： UDA1384
9397 750 14366
Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 02 — 17 January 2005
9 of 55
Philips Semiconductors
UDA1384
Multichannel audio coder-decoder
8.6 Interpolation filter of DAC
The digital interpolation filter interpolates from 1f
s
to 128f
s
(or to 64f
s
in the 192 kHz
sampling mode) by cascading FIR filters, and has two sets of filter coefficients for sharp
and slow roll-off as given in
Table 9
and
Table 10
.
8.7 Noise shaper of DAC
The 3rd-order noise shaper operates at either 128f
s
or 64f
s
(in the 192 kHz sampling
mode), and converts the 24-bit input signal into a 5-bit signal stream. The noise shaper
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.
8.8 Digital mixer
The UDA1384 has 6 digital mixers inside the interpolator (see
Figure 4
). The ADC signals
can be mixed with the I
2
S-bus input signals. The mixing of the ADC signals can be
selected by the bits MIX[1:0].
Table 8:
Item
Pass-band ripple
Pass-band droop
Stop band
Dynamic range
Decimation filter characteristics (voice ADC)
Condition
0f
s
to 0.45f
s
0.45f
s
> 0.55f
s
0f
s
to 0.45f
s
Value (dB)
±
0.05
0.2
65
> 110
Table 9:
Item
Pass-band ripple
Stop band
Dynamic range
Interpolation filter characteristics (sharp roll-off)
Condition
0f
s
to 0.45f
s
> 0.55f
s
0f
s
to 0.45f
s
Value (dB)
±
0.002
75
> 135
Table 10:
Item
Pass-band ripple
Pass-band droop
Stop band
Dynamic range
Interpolation filter characteristics (slow roll-off)
Condition
0f
s
to 0.22f
s
0.45f
s
> 0.78f
s
0f
s
to 0.22f
s
Value (dB)
±
0.002
3.1
94
> 135
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相關代理商/技術參數(shù)
參數(shù)描述
UDA1384H 功能描述:編碼器、解碼器、復用器和解復用器 LO CST MULTICH CODEC RoHS:否 制造商:Micrel 產品:Multiplexers 邏輯系列:CMOS 位數(shù): 線路數(shù)量（輸入/輸出）:2 / 12 傳播延遲時間:350 ps, 400 ps 電源電壓-最大:2.625 V, 3.6 V 電源電壓-最小:2.375 V, 3 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Tray
UDA1384H/N1,518 功能描述:編碼器、解碼器、復用器和解復用器 LOW COST MULTICHANNEL CODEC RoHS:否 制造商:Micrel 產品:Multiplexers 邏輯系列:CMOS 位數(shù): 線路數(shù)量（輸入/輸出）:2 / 12 傳播延遲時間:350 ps, 400 ps 電源電壓-最大:2.625 V, 3.6 V 電源電壓-最小:2.375 V, 3 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Tray
UDA1384H/N1,557 功能描述:編碼器、解碼器、復用器和解復用器 LOW COST MULTICHANNEL CODEC RoHS:否 制造商:Micrel 產品:Multiplexers 邏輯系列:CMOS 位數(shù): 線路數(shù)量（輸入/輸出）:2 / 12 傳播延遲時間:350 ps, 400 ps 電源電壓-最大:2.625 V, 3.6 V 電源電壓-最小:2.375 V, 3 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Tray
UDA1384H-T 功能描述:編碼器、解碼器、復用器和解復用器 LO CST MULTICH CODEC RoHS:否 制造商:Micrel 產品:Multiplexers 邏輯系列:CMOS 位數(shù): 線路數(shù)量（輸入/輸出）:2 / 12 傳播延遲時間:350 ps, 400 ps 電源電壓-最大:2.625 V, 3.6 V 電源電壓-最小:2.375 V, 3 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Tray
UDA1431T 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:16-bit, 48 kHz, low-cost stereo current DAC
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