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參數資料
型號: UCB1400BE
廠商: NXP SEMICONDUCTORS
元件分類: 消費家電
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
文件頁數: 28/63頁
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
28 of 63
9397 750 09611
Koninklijke Philips Electronics N.V. 2002. All rights reserved.
10.2.3
Plate resistance measurement
The plate resistance of a touch screen varies a lot due to processing spreads.
Knowing the actual plate resistance makes it possible to compensate for the plate
resistance effects in the pressure resistance measurements. Secondly, the plate
resistance decreases when two or more spots on the touch screen are pressed. In
that case, a part of one plate, e.g., the X plate, is shorted by the other plate, which
decreases the actual plate resistance.
The plate resistance measurement is executed in the same way as the pressure
resistance measurement. In this case, only one of the two plates is biased, and the
other plate is kept floating. The current through the connected plate is again a direct
indication of the connected resistance.
10.2.4
Interrupt mode
Fig 20. Touch screen setup for X plate resistance measurement.
TSPY
TSMX
TSPX
VBIAS
TO ADC
TSMY
TSPY
TSPX
VBIAS
TSMY
TO ADC
R
Y1
R
Y2
R
t
R
X1
R
X2
SN00249
1 k
1 k
TSMX
Fig 21. Touch screen setup for interrupt detection.
TSPY
TSMX
TSPX
TSMY
TSPY
TSPX
TSMY
R
Y1
R
Y2
R
t
R
X1
R
X2
SN00250
TSMX
TOUCH
R
int
SCHMITT TRIGGER
SCHMITT TRIGGER
AV
DD
AV
DD
R
int
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相關代理商/技術參數
參數描述
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
UCB1400BE,151 功能描述:接口—CODEC AUDIO CODEC 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
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
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:- 標準包裝:2,500 系列:- 類型:立體聲音頻 數據接口:串行 分辨率(位):18 b ADC / DAC 數量:2 / 2 三角積分調變:是 S/N 比,標準 ADC / DAC (db):81.5 / 88 動態范圍,標準 ADC / DAC (db):82 / 87.5 電壓 - 電源,模擬:2.6 V ~ 3.3 V 電壓 - 電源,數字: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 供應商設備封裝: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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