參數(shù)資料
型號(hào)： UCB1400
廠商： NXP Semiconductors N.V.
元件分類： Codec
英文描述： Audio codec with touch screen controller and power management monitor
中文描述： 音頻編解碼器與觸摸屏控制器和電源管理監(jiān)控
文件頁(yè)數(shù)： 22/63頁(yè)
文件大小： 674K
代理商： UCB1400
Philips Semiconductors
UCB1400
Audio codec with touch screen controller
and power management monitor
Product data
Rev. 02 — 21 June 2002
22 of 63
9397 750 09611
Koninklijke Philips Electronics N.V. 2002. All rights reserved.
Two bits in the Feature Control/Status Register 1 (0x6A) provide control over DC
filtering:
DC bit: controls the DC filter before the decimator used to compensate the DC
offset is added in the ADC to remove idle tones from the audio band.
HIPS bit: controls the DC filter at the output of the decimation filter.
9.1.4
Overload detection
An overload detection circuit will inform the user whenever the input voltage exceeds
the maximum input voltage, which will lead to a high distortion. In that case, the OVFL
bit in the Feature Control/Status Register 1 (0x6A) is set. In addition, an interrupt is
generated on the IRQOUT pin of the UCB1400 whenever the
OVLP bit
or the
OVLN
bit
is set in the Positive and/or Negative INT Enable Registers.
9.2 Interpolation filter (DAC)
The digital interpolation filter interpolates from 1 fs to 128 fs by means of a cascade
of FIR filters. The filter characteristics are shown in
Table 7
.
9.2.1
DSP features
The UCB1400 supports the following DSP (Digital Sound Processing) features
through the Feature Control/Status register 1 (0x6A):
Tone control: Bass Boost (BB[3:0]) and Treble Boost (TR[1:0])
Flat/Minimum/Maximum setting for bass and treble boost (M[1:0])
De-emphasis control (DE bit)
In addition, the UCB1400 supports volume control and soft muting via the Master
Volume register (0x02):
Master volume control: The output level can be attenuated in 1.5 dB steps down to
94.5 dB independently for the left and right channels via the Master Volume
Register (0x02).
Mute: The output is muted when the MM bit in the Master Volume Register is set.
Muting the DAC will result in a cosine roll-off soft mute, using 128 samples in the
normal mode: this results in 3 ms at fs = 44.1 kHz.
9.2.2
Noise shaper
The 3rd-order noise shaper operates at 128 fs. 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).
Table 7:
Item
Pass-band ripple
Stop band
Dynamic range
Interpolation filter characteristics
Condition
0 to 0.45 fs
> 0.55 fs
0 to 0.45 fs
Value (dB)
±
0.025
65
> 135
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
UCB1400BE 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Audio codec with touch screen controller and power management monitor
UCB1400BE,128 功能描述:接口—CODEC AUDIO CODEC WITH TOUCHSCREEN RoHS:否 制造商:Texas Instruments 類型: 分辨率: 轉(zhuǎn)換速率:48 kSPs 接口類型:I2C ADC 數(shù)量:2 DAC 數(shù)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(fēng)格:SMD/SMT 封裝 / 箱體:DSBGA-81 封裝:Reel
UCB1400BE,151 功能描述:接口—CODEC AUDIO CODEC RoHS:否 制造商:Texas Instruments 類型: 分辨率: 轉(zhuǎn)換速率:48 kSPs 接口類型:I2C ADC 數(shù)量:2 DAC 數(shù)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(fēng)格:SMD/SMT 封裝 / 箱體:DSBGA-81 封裝:Reel
UCB1400BE,157 功能描述:接口—CODEC DO NOT USE ORDER -S OR -T PART RoHS:否 制造商:Texas Instruments 類型: 分辨率: 轉(zhuǎn)換速率:48 kSPs 接口類型:I2C ADC 數(shù)量:2 DAC 數(shù)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(fēng)格:SMD/SMT 封裝 / 箱體:DSBGA-81 封裝:Reel
UCB1400BEFE 功能描述:IC AUDIO CODEC W/TCH SCRN 48LQFP RoHS:是 類別:集成電路 (IC) >> 接口 - 編解碼器 系列:- 標(biāo)準(zhǔn)包裝:2,500 系列:- 類型:立體聲音頻 數(shù)據(jù)接口:串行 分辨率（位）:18 b ADC / DAC 數(shù)量:2 / 2 三角積分調(diào)變:是 S/N 比，標(biāo)準(zhǔn) ADC / DAC (db):81.5 / 88 動(dòng)態(tài)范圍，標(biāo)準(zhǔn) ADC / DAC (db):82 / 87.5 電壓 - 電源，模擬:2.6 V ~ 3.3 V 電壓 - 電源，數(shù)字:1.7 V ~ 3.3 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:48-WFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:48-TQFN-EP（7x7） 包裝:帶卷 (TR)
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