- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄98302 > TSC2046IRGVRG4 (TEXAS INSTRUMENTS INC) SPECIALTY CONSUMER CIRCUIT, PQCC16 PDF資料下載
參數(shù)資料
| 型號： | TSC2046IRGVRG4 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 消費家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQCC16 |
| 封裝： | 4 X 4 MM, 1MM HEIGHT, GREEN, PLASTIC, QFN-16 |
| 文件頁數(shù)： | 5/33頁 |
| 文件大小： | 774K |
| 代理商： | TSC2046IRGVRG4 |
第1頁第2頁第3頁第4頁當(dāng)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頁第33頁
TSC2046
SBAS265G OCTOBER 2002 REVISED JANUARY 2008
www.ti.com
13
The second mode 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 3 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 TSC2046 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 TSC2046 at 2.7V, 3.3V, etc. The input voltage (VBAT)
is divided down by 4 so that a 5.5V battery voltage is
represented as 1.375V to the ADC. This 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
TSC2046).
+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(guān)PDF資料 |
PDF描述 |
|---|---|
| TSC2046IZQCT | SPECIALTY CONSUMER CIRCUIT, PBGA48 |
| TSC2046EIPWRG4 | SPECIALTY CONSUMER CIRCUIT, PDSO16 |
| TSC2046IRGVTG4 | SPECIALTY CONSUMER CIRCUIT, PQCC16 |
| TSC2046IPWG4 | SPECIALTY CONSUMER CIRCUIT, PDSO16 |
| TSC2046EIRGVRG4 | SPECIALTY CONSUMER CIRCUIT, PQCC16 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TSC2046IRGVT | 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 |
| 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 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。