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參數(shù)資料
| 型號： | TC7129CPL |
| 元件分類： | ADC |
| 英文描述： | 1-CH DUAL-SLOPE ADC, ACCESS, PDIP40 |
| 封裝： | PLASTIC, DIP-40 |
| 文件頁數(shù)： | 17/17頁 |
| 文件大?。?/td> | 185K |
| 代理商： | TC7129CPL |
9
TC7129
4-1/2 DIGIT ANALOG-TO-DIGITAL
CONVERTER WITH ON-CHIP LCD DRIVERS
Figure 5. External Logic Referenced Directly to DGND
Figure 6. External Logic Referenced to DGND With Buffer
Temperature Compensation
For most applications, VDISP (pin 19) can be connected
directly to DGND (pin 36). For applications with a wide
temperature range, some LCDs require that the drive levels
vary with temperature to maintain good viewing angle and
display contrast. Figure 7 shows two circuits that can be
adjusted to give temperature compensation of about 10
mV/
°C between V+ (pin 24) and VDISP. The diode between
DGND and VDISP should have a low turn-ON voltage be-
cause VDISP cannot exceed 0.3V below DGND.
EXTERNAL
LOGIC
DGND
V
+
36
24
23
ILOGIC
TC7129
V –
–
+
EXTERNAL
LOGIC
ILOGIC
DGND
23
24
V
+
36
TC7129
V
–
TC7129
+
–
1N4148
5 k
75 k
200 k
39 k
19
36
24
23
V
–
V+
VDISP
DGND
TC7129
2N2222
39 k
19
36
24
23
V
–
V+
VDISP
DGND
20 k
18 k
Figure 7.
Temperature Compensating Circuits
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TC7129CPL713 | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:4-1/2 Digit Analog-to-Digital Converters with On-Chip LCD Drivers |
| TC7129IJL713 | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:4-1/2 Digit Analog-to-Digital Converters with On-Chip LCD Drivers |
| TC7129IKW713 | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:4-1/2 Digit Analog-to-Digital Converters with On-Chip LCD Drivers |
| TC7129ILW713 | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:4-1/2 Digit Analog-to-Digital Converters with On-Chip LCD Drivers |
| TC7129IPL713 | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:4-1/2 Digit Analog-to-Digital Converters with On-Chip LCD Drivers |
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