參數(shù)資料
型號(hào)： TC7107IPL
廠商： TelCom Semiconductor, Inc.
英文描述： PTB 41C 14#15,27#20 PIN/SKT RE
中文描述： 3-1/2位數(shù)的A / D轉(zhuǎn)換器
文件頁(yè)數(shù)： 16/19頁(yè)
文件大?。?/td> 296K
代理商： TC7107IPL
3-198
TELCOM SEMICONDUCTOR, INC.
TC7106
TC7106A
TC7107
TC7107A
3-1/2 DIGIT A/D CONVERTERS
Decimal Point and Annunciator Drive
The TEST pin is connected to the internally-generated
digital logic supply ground through a 500
resistor. The
TEST pin may be used as the negative supply for external
CMOS gate segment drivers. LCD display annunciators for
decimal points, low battery indication, or function indication
may be added without adding an additional supply. No more
than 1mA should be supplied by the TEST pin: its potential
is approximately 5V below V
+
.
R Unknown
R Standard
Figure 17. Low Parts Count Ratiometric Resistance
Measurement
Ratiometric Resistance Measurements
The true differential input and differential reference
make ratiometric reading possible. Typically in a ratiometric
operation, an unknown resistance is measured with respect
to a known standard resistance. No accurately defined
reference voltage is needed.
The unknown resistance is put in series with a known
standard and a current passed through the pair. The voltage
developed across the unknown is applied to the input and
the voltage across the known resistor is applied to the
reference input. If the unknown equals the standard, the
display will read 1000. The displayed reading can be deter-
mined from the following expression:
Displayed Reading =
x 1000
The display will overrange for R Unknown
≥
2 x R
standard.
TC7106A
BP
TEST37
21
V+
V+
GND
TO LCD
DECIMAL
POINT
TO LCD
BACK-
PLANE
4049
TC7106A
DECIMAL
POINT
SELECT
V+
V+
TEST
GND
4030
TO LCD
DECIMAL
POINTS
BP
Figure 16. Decimal Point Drive Using TEST as Logic Ground
V
REF
V
REF
+
V
IN
+
V
IN
ANALOG
COMMON
–
TC7106A
LCD DISPLAY
R
STANDARD
R
UNKNOWN
V+
相關(guān)PDF資料
PDF描述
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TC7107RCPL 功能描述:LED顯示驅(qū)動(dòng)器 w/LED Driver RoHS:否 制造商:Micrel 數(shù)位數(shù)量:5 片段數(shù)量: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PLCC-44 工作電源電壓:4.75 V to 11 V 最大電源電流:10 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝:Tube
TC7109 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:12-Bit レA-Compatible Analog-to-Digital Converters
TC7109_13 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:12-Bit ??-A-Compatible Analog-to-Digital Converters
TC7109A 制造商:TELCOM 制造商全稱:TelCom Semiconductor, Inc 功能描述:12-BIT UP-COMPATIBLE ANALOG-TO-DIGITAL CONVERTERS
TC7109ACKW 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 13 Bit Fast Recovery RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32
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