參數(shù)資料
型號： TSC2300IPAGRG4
廠商： TEXAS INSTRUMENTS INC
元件分類： 消費(fèi)家電
英文描述： SPECIALTY CONSUMER CIRCUIT, PQFP64
封裝： GREEN, PLASTIC, TQFP-64
文件頁數(shù)： 52/83頁
文件大?。?/td> 1268K
代理商： TSC2300IPAGRG4
www.ti.com
RRNG
VBIAS
DAC
8-Bits
V+
ARNG
AOUT
R1
R2
TSC2301
1
300
200
100
0
10 k
100 k
1 M
10 M
100 M
DAC
Fullscale
Output
Current
–
A
400
500
RRNG Resistor Value
DAC FULLSCALE OUTPUT CURRENT
vs
RRNG RESISTOR VALUE
600
1000
900
800
700
1100
TSC2300
SLAS372 — NOVEMBER 2002
Figure 70. D/A Converter Configuration
This circuit is designed for flexibility in the output voltage at the VBIAS point shown in Figure 70 to accommodate the
widely varying requirements for LCD contrast control bias. V+ can be a higher voltage than the supply voltage for the
TSC2300. The only restriction is that the voltage on the AOUT pin can never go above the absolute maximum ratings
for the device, and should stay above 1.5 V for linear operation.
The D/A converter has an output sink range which is limited to approximately 1 mA. This range can be adjusted by
changing the value of RRNG shown in Figure 70. As this DAC is not designed to be a precision device, the actual
value of the output current range can vary as much as
±20%. Furthermore, the current output changes due to
variations in temperature; the DAC has a temperature coefficient of approximately 0.9 uA/
°C.
To set the full-scale current, RRNG can be determined from the graph shown in Figure 71.
Figure 71. DAC Output Current Range vs RRNG Resistor Value.
56
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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TSC2301EVM 功能描述:觸摸傳感器開發(fā)工具 TSC2301 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:
TSC2301IGQZ 功能描述:觸摸屏轉(zhuǎn)換器和控制器 Prog 4-Wire w/20-Bit Stereo Audio Codec 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
TSC2301IGQZR 功能描述:觸摸屏轉(zhuǎn)換器和控制器 Prog 4-Wire w/20-Bit Stereo Audio Codec 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
TSC2301IPAG 功能描述:觸摸屏轉(zhuǎn)換器和控制器 Prog 4-Wire w/20-Bit Stereo Audio Codec 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
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