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参数资料
| 型号： | TC7107ARCPLIJL |
| 元件分类： | ADC |
| 英文描述： | 1-CH DUAL-SLOPE ADC, ACCESS, PDIP40 |
| 封装： | CERDIP-40 |
| 文件页数： | 8/21页 |
| 文件大小： | 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
+
相关PDF资料 |
PDF描述 |
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| TC7106ACPLIJL | 1-CH DUAL-SLOPE ADC, PDIP40 |
| TC7106CPLIJL | 1-CH DUAL-SLOPE ADC, PDIP40 |
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| TC7107RCPLIJL | 1-CH DUAL-SLOPE ADC, ACCESS, PDIP40 |
| TC7106ACPLIJL | 1-CH DUAL-SLOPE ADC, ACCESS, PDIP40 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| TC7107CKW | 功能描述:LED显示驱动器 w/LED Driver RoHS:否 制造商:Micrel 数位数量:5 片段数量: 安装风格:SMD/SMT 封装 / 箱体:PLCC-44 工作电源电压:4.75 V to 11 V 最大电源电流:10 mA 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装:Tube |
| TC7107CKW713 | 功能描述:LED显示驱动器 w/LED Driver RoHS:否 制造商:Micrel 数位数量:5 片段数量: 安装风格:SMD/SMT 封装 / 箱体:PLCC-44 工作电源电压:4.75 V to 11 V 最大电源电流:10 mA 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装:Tube |
| TC7107CLW | 功能描述:LED显示驱动器 w/LED Driver RoHS:否 制造商:Micrel 数位数量:5 片段数量: 安装风格:SMD/SMT 封装 / 箱体:PLCC-44 工作电源电压:4.75 V to 11 V 最大电源电流:10 mA 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装:Tube |
| TC7107CLW713 | 功能描述:LED显示驱动器 w/LED Driver RoHS:否 制造商:Micrel 数位数量:5 片段数量: 安装风格:SMD/SMT 封装 / 箱体:PLCC-44 工作电源电压:4.75 V to 11 V 最大电源电流:10 mA 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装:Tube |
| TC7107CPL | 功能描述:LED显示驱动器 w/LED Driver RoHS:否 制造商:Micrel 数位数量:5 片段数量: 安装风格:SMD/SMT 封装 / 箱体:PLCC-44 工作电源电压:4.75 V to 11 V 最大电源电流:10 mA 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装:Tube |
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