- 您现在的位置：买卖IC网 > PDF目录98301 > TSC2003I (TEXAS INSTRUMENTS INC) 3-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO16 PDF资料下载
参数资料
| 型号： | TSC2003I |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | ADC |
| 英文描述： | 3-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO16 |
| 封装： | PLASTIC, TSSOP-16 |
| 文件页数： | 5/20页 |
| 文件大小： | 309K |
| 代理商： | TSC2003I |
TSC2003
13
SBAS162A
www.ti.com
BATTERY MEASUREMENT
An added feature of the TSC2003 is the ability to monitor
the battery voltage on the other side of the voltage regulator
(DC/DC converter), as shown in Figure 7. The battery
voltage can vary from 0.5V to 6V, while the voltage regu-
lator maintains the voltage to the TSC2003 at 2.7V, 3.3V,
etc. The input voltage (VBAT1 or VBAT2) is divided down by
4 so that a 6.0V battery voltage is represented as 1.5V to the
A/D converter. The simplifies the multiplexer and control
logic. In order to minimize the power consumption, the
divider is only ON during the sample period which occurs
after control bits C3 = 0, C2 = 0, C1 = 0, and C0 = 1 (VBAT1)
or C3 = 0, C2 = 1, C1 = 0, and C0 = 1 (VBAT2) are received.
See Tables I and II for the relationship between the control
bits and configuration of the TSC2003.
VDD
VBAT
7.5k
2.5k
DC/DC
Converter
Battery
0.5V
to
6.0V
0.125V to 1.5V
2.7V
+
A/D
Converter
FIGURE 7. Battery Measurement Functional Block Diagram.
X-Position
Measure X-Position
Measure Z
1-Position
Touch
X+
Y+
X–
Y–
Z
1-Position
Touch
X+
Y+
Y–
X–
Measure Z
2-Position
Z
2-Position
Touch
X+
Y+
Y–
X–
FIGURE 8. Pressure Measurement Block Diagrams.
PRESSURE MEASUREMENT
Measuring touch pressure can also be done with the TSC2003.
To determine pen or finger touch, the pressure of the “touch”
needs to be determined. Generally, it is not necessary to have
high accuracy for this test, therefore, the 8-bit resolution
mode is recommended. However, calculations will be shown
with the 12-bit resolution mode. There are several different
ways of performing this measurement—the TSC2003 sup-
ports two methods.
The first method requires knowing the X-plate resistance,
measurement of the X-Position, and two additional
cross-panel measurements (Z2 and Z1) of the touch screen,
as shown in Figure 8. Using Equation 2 will calculate the
touch resistance:
RR
X
Position
4096
Z
–1
TOUCH
X Plate
2
1
=
(2)
The second method requires knowing both the X-Plate and
Y-Plate resistance, measurement of X-Position and Y-Posi-
tion, and Z1. Equation 3 will calculate the touch resistance
using the second method:
R
X
Position
4096
Z
–1
–R
Y
Position
4096
TOUCH
X Plate
1
Y Plate
=
(3)
DIGITAL INTERFACE
The TSC2003 supports the I2C serial bus and data transmis-
sion protocol in all three defined modes: standard, fast, and
high-speed. A device that sends data onto the bus is defined
as a transmitter, and a device receiving data as a receiver.
The device that controls the message is called a “master”.
The devices that are controlled by the master are “slaves”.
The bus must be controlled by a master device which
相关PDF资料 |
PDF描述 |
|---|---|
| TSC2003IR | 3-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO16 |
| TSC2008IRGVR | SPECIALTY CONSUMER CIRCUIT, PQCC16 |
| TSC2008IRGVT | SPECIALTY CONSUMER CIRCUIT, PQCC16 |
| TSC2008IYZGR | SPECIALTY CONSUMER CIRCUIT, BGA12 |
| TSC2008IYZGT | SPECIALTY CONSUMER CIRCUIT, BGA12 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| TSC2003IPW | 功能描述:触摸屏转换器和控制器 4-wire Touch Screen Controller RoHS:否 制造商:Microchip Technology 类型:Resistive Touch Controllers 输入类型:3 Key 数据速率:140 SPS 分辨率:10 bit 接口类型:4-Wire, 5-Wire, 8-Wire, I2C, SPI 电源电压:2.5 V to 5.25 V 电源电流:17 mA 工作温度:- 40 C to + 85 C 封装 / 箱体:SSOP-20 |
| TSC2003IPWG4 | 功能描述:触摸屏转换器和控制器 4-wire Touch Screen Controller RoHS:否 制造商:Microchip Technology 类型:Resistive Touch Controllers 输入类型:3 Key 数据速率:140 SPS 分辨率:10 bit 接口类型:4-Wire, 5-Wire, 8-Wire, I2C, SPI 电源电压:2.5 V to 5.25 V 电源电流:17 mA 工作温度:- 40 C to + 85 C 封装 / 箱体:SSOP-20 |
| TSC2003IPWR | 功能描述:触摸屏转换器和控制器 4-wire Touch Screen Controller RoHS:否 制造商:Microchip Technology 类型:Resistive Touch Controllers 输入类型:3 Key 数据速率:140 SPS 分辨率:10 bit 接口类型:4-Wire, 5-Wire, 8-Wire, I2C, SPI 电源电压:2.5 V to 5.25 V 电源电流:17 mA 工作温度:- 40 C to + 85 C 封装 / 箱体:SSOP-20 |
| TSC2003IPWR | 制造商:Texas Instruments 功能描述:Controller IC |
| TSC2003IPWRG4 | 功能描述:触摸屏转换器和控制器 4-wire Touch Screen Controller RoHS:否 制造商:Microchip Technology 类型:Resistive Touch Controllers 输入类型:3 Key 数据速率:140 SPS 分辨率:10 bit 接口类型:4-Wire, 5-Wire, 8-Wire, I2C, SPI 电源电压:2.5 V to 5.25 V 电源电流:17 mA 工作温度:- 40 C to + 85 C 封装 / 箱体:SSOP-20 |
发布紧急采购，3分钟左右您将得到回复。