參數(shù)資料
型號(hào)： UCB1400BE
廠商： NXP SEMICONDUCTORS
元件分類(lèi)： 消費(fèi)家電
英文描述： Audio codec with touch screen controller and power management monitor
中文描述： SPECIALTY CONSUMER CIRCUIT, PQFP48
封裝： 7 X 7 X 1.40 MM, PLASTIC, LQFP-48
文件頁(yè)數(shù)： 21/63頁(yè)
文件大小： 674K
代理商： UCB1400BE
Philips Semiconductors
UCB1400
Audio codec with touch screen controller
and power management monitor
Product data
Rev. 02 — 21 June 2002
21 of 63
9397 750 09611
Koninklijke Philips Electronics N.V. 2002. All rights reserved.
9.1.1
Line inputs
The analog front-end of the UCB1400 consists of two stereo ADCs with a
programmable gain stage. The full scale input voltage of the line input path is
programmable in 1.5 dB steps independently for the left and right channels by setting
the GL[3:0] and GR[3:0] bits in the Record Gain Register (0x1C).
9.1.2
Microphone input
The UCB1400 audio codec input path accepts microphone signals via a DC blocking
capacitor. The ‘ground’ side of the microphone is either connected to the analog
ground (AV
SS
) or to the MICGND pin of the UCB1400. The latter will decrease the
current consumption of active microphones, since the MICGND pin is made Hi-Z
when the microphone input is not selected (SL = LINE_IN_L in Record Select register
(0x1A)).
The LNA gain can be set to 0 or 20 dB via the 20 dB bit in the MIC Volume register
(0x0E). Additional gain in 1.5 dB steps is possible via the GL[3:0] in the Record Gain
register (0x1C).
9.1.3
Decimation filter
The decimation from 128 fs is performed in two stages. The first stage realizes
sin(x)/x characteristics with decimation factor of 16. The second stage consists of 3
half-band filters, each decimating by a factor of 2. The filter characteristics are shown
in
Table 6
.
a.
‘Passive’ microphone.
b.
‘Active’ microphone.
Fig 15. Possible microphone connections.
UCB1400
AV
DD
MICP
MICGND
AV
SS
SN00226
UCB1400
AV
DD
MICP
MICGND
AV
SS
SN00227
Table 6:
Item
Pass-band ripple
Stop band
Dynamic range
Decimation filter characteristics
Condition
0 to 0.45 fs
> 0.55 fs
0 to 0.45 fs
Value (dB)
±
0.015
60
> 135
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
UCB1400BE,128 功能描述:接口—CODEC AUDIO CODEC WITH TOUCHSCREEN RoHS:否 制造商:Texas Instruments 類(lèi)型: 分辨率: 轉(zhuǎn)換速率:48 kSPs 接口類(lèi)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(lèi)型: 分辨率: 轉(zhuǎn)換速率:48 kSPs 接口類(lèi)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(lèi)型: 分辨率: 轉(zhuǎn)換速率:48 kSPs 接口類(lèi)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(lèi)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(lèi)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(lèi)型:表面貼裝 封裝/外殼:48-WFQFN 裸露焊盤(pán) 供應(yīng)商設(shè)備封裝:48-TQFN-EP（7x7） 包裝:帶卷 (TR)
UCB1400BE-S 功能描述:接口—CODEC AUDIO CODEC NO NEW DESIGNS RoHS:否 制造商:Texas Instruments 類(lèi)型: 分辨率: 轉(zhuǎn)換速率:48 kSPs 接口類(lèi)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
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