- 您現在的位置：買賣IC網 > PDF目錄98302 > TSC2046EIZQCT (TEXAS INSTRUMENTS INC) SPECIALTY CONSUMER CIRCUIT, PBGA48 PDF資料下載
參數資料
| 型號： | TSC2046EIZQCT |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 消費家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PBGA48 |
| 封裝： | 4 X 4 MM, ROHS COMPLIANT, PLASTIC, VFBGA-48 |
| 文件頁數： | 5/32頁 |
| 文件大?。?/td> | 755K |
| 代理商： | TSC2046EIZQCT |
第1頁第2頁第3頁第4頁當前第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁
TSC2046E
SBAS417B JUNE 2007 REVISED JANUARY 2008
www.ti.com
13
The second mode of operation does not require a test
temperature calibration, but uses a two-measurement
method to eliminate the need for absolute temperature
calibration and for achieving 2
°C accuracy. This mode
requires a second conversion with an address of A2 = 1,
A1 = 1, and A0 = 1, with a 91 times larger current. The voltage
difference between the first and second conversion using 91
times the bias current is represented by Equation (1):
DV + kT
q @ In(N)
where:
N is the current ratio = 91
.
k = Boltzmann’s constant = 1.3807
× 1023 J/K
(joules/kelvins).
q = the electron charge = 1.6022
× 10–19 C (coulombs).
T = the temperature in kelvins (K).
This method can provide improved absolute temperature
measurement, but at a lower resolution of 1.6
°C/LSB. The
resulting equation that solves for T is:
T
+
q
@ DV
k
@ In(N)
where:
V = VBE(TEMP1) – VBE(TEMP0) (in mV)
∴ T = 2.573 V (in K)
or T = 2.573
V – 273 (in °C)
NOTE: The bias current for each diode temperature
measurement is only on for three clock cycles (during the
acquisition mode) and, therefore, does not add any
noticeable increase in power, especially if the temperature
measurement only occurs occasionally.
BATTERY MEASUREMENT
An added feature of the TSC2046E 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 0V to 6V, while maintaining the voltage to the
TSC2046E at 2.7V, 3.3V, etc. The input voltage (VBAT) is
divided down by four so that a 5.5V battery voltage is
represented as 1.375V to the ADC. This design simplifies the
multiplexer and control logic. In order to minimize the power
consumption, the divider is only on during the sampling
period when A2 = 0, A1 = 1, and A0 = 0 (see Table 1 for the
relationship between the control bits and configuration of the
TSC2046E).
+VCC
VBAT
7.5k
2.5k
DC/DC
Converter
Battery
0.5V
to
5.5V
0.125V to 1.375V
2.7V
+
ADC
Figure 7. Battery Measurement Functional Block
Diagram
(1)
(2)
相關PDF資料 |
PDF描述 |
|---|---|
| TSC2046EIPWR | SPECIALTY CONSUMER CIRCUIT, PDSO16 |
| TSC2046EIPW | SPECIALTY CONSUMER CIRCUIT, PDSO16 |
| TSC2046EIZQCR | SPECIALTY CONSUMER CIRCUIT, PBGA48 |
| TSC2100IDARG4 | SPECIALTY CONSUMER CIRCUIT, PDSO32 |
| TSC2100IDAR | SPECIALTY CONSUMER CIRCUIT, PDSO32 |
相關代理商/技術參數 |
參數描述 |
|---|---|
| TSC2046E-Q1 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:LOW-VOLTAGE I/O TOUCH SCREEN CONTROLLER |
| TSC2046EQPWRQ1 | 功能描述:觸摸屏轉換器和控制器 AC 2-Ph Interleaved CCM PFC Controller RoHS:否 制造商:Microchip Technology 類型:Resistive Touch Controllers 輸入類型:3 Key 數據速率: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 |
| TSC2046EVM | 功能描述:觸摸傳感器開發工具 TSC2046 Eval Mod RoHS:否 制造商:Cypress Semiconductor 工具用于評估: 接口類型: 工作電壓: 最大工作溫度: |
| TSC2046EVM-PDK | 功能描述:觸摸傳感器開發工具 TSC2046 Product Dev Kit RoHS:否 制造商:Cypress Semiconductor 工具用于評估: 接口類型: 工作電壓: 最大工作溫度: |
| TSC2046IGQCR | 功能描述:觸摸屏轉換器和控制器 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 數據速率: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 |
發布緊急采購，3分鐘左右您將得到回復。