參數(shù)資料
型號(hào)： TC7107ARCPLIJL
元件分類： ADC
英文描述： 1-CH DUAL-SLOPE ADC, PDIP40
封裝： CERDIP-40
文件頁(yè)數(shù)： 8/21頁(yè)
文件大?。?/td> 269K
代理商： TC7107ARCPLIJL
16
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
TEST
37
21
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
VREF
+
VREF
–
VIN
+
VIN
–
ANALOG
COMMON
TC7106A
LCD DISPLAY
R
STANDARD
R
UNKNOWN
V
+
相關(guān)PDF資料
PDF描述
TC7107CPLIJL 1-CH DUAL-SLOPE ADC, ACCESS, PDIP40
TC7106RCPLIJL 1-CH DUAL-SLOPE ADC, ACCESS, PDIP40
TC7107ACPLIJL 1-CH DUAL-SLOPE ADC, ACCESS, PDIP40
TC7107ACPLIJL 1-CH DUAL-SLOPE ADC, PDIP40
TC7106RCPLIJL 1-CH DUAL-SLOPE ADC, PDIP40
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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TC7107CLW713 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
TC7107CPL 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
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