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參數(shù)資料
| 型號： | TSC2046IRGVT |
| 英文描述： | CONTINUOUS TIME UNIPOLAR SWITCH |
| 中文描述： | 低電壓I / O觸摸屏控制器 |
| 文件頁數(shù)： | 8/23頁 |
| 文件大?。?/td> | 554K |
| 代理商： | TSC2046IRGVT |
TSC2046
SBAS265C
8
www.ti.com
THEORY OF OPERATION
The TSC2046 is a classic successive approximation register
(SAR) analog-to-digital converter (ADC). The architecture is
based on capacitive redistribution, which inherently includes
a sample-and-hold function. The converter is fabricated on a
0.6μm CMOS process.
The basic operation of the TSC2046 is shown in Figure 1.
The device features an internal 2.5V reference and uses an
external clock. Operation is maintained from a single supply
of 2.7V to 5.25V. The internal reference can be overdriven
with an external, low-impedance source between 1V and
TYPICAL CHARACTERISTICS
(Cont.)
At T
A
= +25°C, +V
CC
= +2.7V, IOVDD = +1.8V, V
REF
= External +2.5V, 12-bit mode, PD0 = 0, f
SAMPLE
= 125kHz, and f
CLK
= 16 f
SAMPLE
= 2MHz, unless otherwise noted.
+V
CC
. The value of the reference voltage directly sets the
input range of the converter.
The analog input (X-, Y-, and Z-Position coordinates, auxiliary
input, battery voltage, and chip temperature) to the converter is
provided via a multiplexer. A unique configuration of low on-
resistance touch panel driver switches allows an unselected
ADC input channel to provide power and the accompanying pin
to provide ground for an external device, such as a touch
screen. By maintaining a differential input to the converter and
a differential reference architecture, it is possible to negate the
error from each touch panel driver switch’s on-resistance (if this
is a source of error for the particular measurement).
FIGURE 1. Basic Operation of the TSC2046.
TEMP1 DIODE VOLTAGE vs +V
CC
2.7
3.0
3.3
+V
CC
(V)
T
720
718
716
714
712
710
+V
CC
+V
CC
X+
Y+
X–
Y–
V
BAT
AUX
B1
C1
D1
E1
G2
G3
G6
E7
G4
G5
A2
A3
A4
A5
A6
B7
C7
D7
DCLK
CS
DIN
BUSY
DOUT
PENIRQ
IOVDD
V
REF
Serial/Conversion Clock
Chip Select
Serial Data In
Converter Status
Serial Data Out
+
1
μ
F
to
10
μ
F
(Optional)
+2.7V to +5V
TSC2046
Auxiliary Input
To Battery
Voltage
Regulator
Touch
Screen
0.1
μ
F
Pen Interrupt
GND
GND
NOTE: BGA package and pin names shown.
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| TSC2046IRGVTG4 | 功能描述:觸摸屏轉(zhuǎn)換器和控制器 4-Wire w/low voltage digital I/O RoHS:否 制造商:Microchip Technology 類型:Resistive Touch Controllers 輸入類型:3 Key 數(shù)據(jù)速率:140 SPS 分辨率:10 bit 接口類型: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 |
| TSC2046IZQCR | 功能描述:觸摸屏轉(zhuǎn)換器和控制器 4-Wire w/low voltage digital I/O RoHS:否 制造商:Microchip Technology 類型:Resistive Touch Controllers 輸入類型:3 Key 數(shù)據(jù)速率:140 SPS 分辨率:10 bit 接口類型: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 |
| TSC2046IZQCR-90 | 功能描述:觸摸屏轉(zhuǎn)換器和控制器 4-Wire w/low voltage digital I/O RoHS:否 制造商:Microchip Technology 類型:Resistive Touch Controllers 輸入類型:3 Key 數(shù)據(jù)速率:140 SPS 分辨率:10 bit 接口類型: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 |
| TSC2046IZQCT | 功能描述:觸摸屏轉(zhuǎn)換器和控制器 4-Wire w/low voltage digital I/O RoHS:否 制造商:Microchip Technology 類型:Resistive Touch Controllers 輸入類型:3 Key 數(shù)據(jù)速率:140 SPS 分辨率:10 bit 接口類型: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 |
| TSC2059 | 制造商:TSC 制造商全稱:Taiwan Semiconductor Company, Ltd 功能描述:General Purpose NPN Transistor |
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