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参数资料
| 型号： | TC7129CLW |
| 元件分类： | ADC |
| 英文描述： | 1-CH DUAL-SLOPE ADC, ACCESS, PQCC44 |
| 封装： | PLASTIC, LCC-44 |
| 文件页数： | 17/17页 |
| 文件大小： | 185K |
| 代理商： | TC7129CLW |
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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| TC7135C/PI | 1-CH 4-BIT DUAL-SLOPE ADC, PARALLEL ACCESS, PDIP28 |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TC7129CLW713 | 功能描述:LCD 驱动器 w/LCD Driver RoHS:否 制造商:Maxim Integrated 数位数量:4.5 片段数量:30 最大时钟频率:19 KHz 工作电源电压:3 V to 3.6 V 最大工作温度:+ 85 C 最小工作温度:- 20 C 封装 / 箱体:PDIP-40 封装:Tube |
| TC7129CPL | 功能描述:LCD 驱动器 w/LCD Driver RoHS:否 制造商:Maxim Integrated 数位数量:4.5 片段数量:30 最大时钟频率:19 KHz 工作电源电压:3 V to 3.6 V 最大工作温度:+ 85 C 最小工作温度:- 20 C 封装 / 箱体:PDIP-40 封装:Tube |
| TC7129CPL713 | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:4-1/2 Digit Analog-to-Digital Converters with On-Chip LCD Drivers |
| TC7129IJL713 | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:4-1/2 Digit Analog-to-Digital Converters with On-Chip LCD Drivers |
| TC7129IKW713 | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:4-1/2 Digit Analog-to-Digital Converters with On-Chip LCD Drivers |
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