參數(shù)資料
型號(hào)： MXB7843EUE
廠商： MAXIM INTEGRATED PRODUCTS INC
元件分類(lèi)： ADC
英文描述： 2.375V to 5.25V, 4-Wire Touch-Screen
中文描述： 2-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO16
封裝： 4.40 MM, MO-153AB, TSSOP-16
文件頁(yè)數(shù)： 14/21頁(yè)
文件大小： 508K
代理商： MXB7843EUE
M
occur at a faster clock rate since settling to better than 8
bits is all that is required. The clock rate can be as much
as 25% faster. The faster clock rate and fewer clock
cycles combine to increase the conversion rate.
Data Format
The MXB7843 output data is in straight binary format as
shown in Figure 10. This figure shows the ideal output
code for the given input voltage and does not include
the effects of offset, gain, or noise.
Applications Information
Basic Operation of the MXB7843
The 4-wire touch-screen controller works by creating a
voltage gradient across the vertical or horizontal resis-
tive network connected to the MXB7843, as shown in
the
Typical Application Circuit
. The touch screen is
biased through internal MOSFET switches that connect
each resistive layer to V
DD
and ground on an alternate
basis. For example, to measure the Y position when a
2.375V to 5.25V, 4-Wire Touch-Screen
Controller
14
______________________________________________________________________________________
DCLK
1
8
9
12
16
4
5
6
7
8
9
10
11
3
2
1
0
20
24
4
DOUT
A/D STATE
BUSY
CS
DIN
S
A2
A1
A0
MODE
ON
OFF
(MSB)
(LSB)
CONVERSION
IDLE
IDLE
IDLE
TB
ACQUIRE
CONVERSION
IDLE
RB1
OFF
OFF
OFF
ON
PD1
PD0
(START)
SER/
DFR
DRIVERS1 AND 2
(SER/DFR HIGH)
DRIVERS1 AND 2
(SER/DFR LOW)
t
ACQ
ACQUIRE
RB2
RB3
Figure 7. Conversion Timing, 24-Clock per Conversion, 8-Bit Bus Interface
1
8
15
1
8
15
1
DCLK
DIN
DOUT
BUSY
S
CONTROL BYTE 0
CONTROL BYTE 1
CONTROL BYTE 2
S
S
CONVERSION RESULT 0
CONVERSION RESULT 1
B11 B10 B9 B8 B7 B6 B5 B4 B3 B2 B1 B0
B11 B10 B9 B8 B7 B6 B5 B4 B3 B2 B1 B0
CS
Figure 8. 15-Clock/Conversion Timing
相關(guān)PDF資料
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MXB7843EUE+ 功能描述:觸摸屏轉(zhuǎn)換器和控制器 2.375-5.25V 4-Wire Touch-Screen Ctlr RoHS:否 制造商:Microchip Technology 類(lèi)型:Resistive Touch Controllers 輸入類(lèi)型:3 Key 數(shù)據(jù)速率:140 SPS 分辨率:10 bit 接口類(lèi)型:4-Wire, 5-Wire, 8-Wire, I2C, SPI 電源電壓:2.5 V to 5.25 V 電源電流:17 mA 工作溫度:- 40 C to + 85 C 封裝 / 箱體:SSOP-20
MXB7843EUE+T 功能描述:觸摸屏轉(zhuǎn)換器和控制器 2.375-5.25V 4-Wire Touch-Screen Ctlr RoHS:否 制造商:Microchip Technology 類(lèi)型:Resistive Touch Controllers 輸入類(lèi)型:3 Key 數(shù)據(jù)速率:140 SPS 分辨率:10 bit 接口類(lèi)型:4-Wire, 5-Wire, 8-Wire, I2C, SPI 電源電壓:2.5 V to 5.25 V 電源電流:17 mA 工作溫度:- 40 C to + 85 C 封裝 / 箱體:SSOP-20
MXB7843EUE-T 功能描述:觸摸屏轉(zhuǎn)換器和控制器 RoHS:否 制造商:Microchip Technology 類(lèi)型:Resistive Touch Controllers 輸入類(lèi)型:3 Key 數(shù)據(jù)速率:140 SPS 分辨率:10 bit 接口類(lèi)型:4-Wire, 5-Wire, 8-Wire, I2C, SPI 電源電壓:2.5 V to 5.25 V 電源電流:17 mA 工作溫度:- 40 C to + 85 C 封裝 / 箱體:SSOP-20
MXB7846 制造商:MAXIM 制造商全稱(chēng):Maxim Integrated Products 功能描述:2.375V to 5.25V, 4-Wire Touch-Screen Controller with Internal Reference and Temperature Sensor
MXB7846EEE 功能描述:觸摸屏轉(zhuǎn)換器和控制器 RoHS:否 制造商:Microchip Technology 類(lèi)型:Resistive Touch Controllers 輸入類(lèi)型:3 Key 數(shù)據(jù)速率:140 SPS 分辨率:10 bit 接口類(lèi)型:4-Wire, 5-Wire, 8-Wire, I2C, SPI 電源電壓:2.5 V to 5.25 V 電源電流:17 mA 工作溫度:- 40 C to + 85 C 封裝 / 箱體:SSOP-20
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