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| 型号： | TC7117CLW713 |
| 厂商： | Microchip Technology |
| 文件页数： | 10/24页 |
| 文件大小： | 0K |
| 描述： | IC ADC 3 1/2DGT LED DVR 44-PLCC |
| 标准包装： | 500 |
| 显示器类型： | LED |
| 配置： | 7 段显示 |
| 数字或字符： | A/D，3.5 位数字 |
| 电流 - 电源： | 800µA |
| 电源电压： | 5V |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 44-LCC（J 形引线） |
| 供应商设备封装： | 44-PLCC |
| 包装： | 带卷 (TR) |
TC7116/A/TC7117/A
large P-channel source follower. This supply is made
stiff to absorb the relative large capacitive currents
V+
when the backplane (BP) voltage is switched. The BP
V+
BP
frequency is the clock frequency 4800. For 3 readings
per second, this is a 60Hz square wave with a nominal
TC7116
TC7116A
Decimal
Point
Select
To LCD
Decimal
Point
amplitude of 5V. The segments are driven at the same
frequency and amplitude, and are in phase with BP
when OFF, but out of phase when ON. In all cases,
negligible DC voltage exists across the segments.
Figure is the digital section of the TC7117/TC7117A. It
TEST
FIGURE 3-4:
Decimal Point Drive
4030
GND
Exclusive “OR” Gate for
is identical to the TC7116/TC7116A, except that the
regulated supply and BP drive have been eliminated,
and the segment drive is typically 8mA. The 1000’s out-
put (Pin 19) sinks current from two LED segments, and
has a 16mA drive capability. The TC7117/TC7117A are
designed to drive common anode LED displays.
3.2
Digital Section
In both devices, the polarity indication is ON for analog
inputs. If V IN - and V IN + are reversed, this indication can
TC7116/TC7116A and TC7117/TC7117A, respectively.
For the TC7116/TC7116A (Figure 3-5), an internal dig-
ital ground is generated from a 6V Zener diode and a
TC7116
TC7116A
be reversed also, if desired.
Backplane
21
LCD Phase Driver
Typical Segment Output
0.5mA
V+
7-Segment
Decode
7-Segment
Decode
7-Segment
Decode
÷ 200
Segment
Output
2mA
Internal Digital Ground
Latch
Thousands
Hundreds
Tens
Units
To Switch Drivers
From Comparator Output
35
V+
Clock
÷ 4
Logic Control
~70k Ω
V TH = 1V
6.2V
500 Ω
37
TEST
40
39
38
Internal Digital Ground
1
26
V-
OSC1
OSC2
OSC3
HLDR
FIGURE 3-5:
DS21457C-page 10
TC7116/TC7116A Digital Section
? 2006 Microchip Technology Inc.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TC7117CPL | 功能描述:LED显示驱动器 3.5 digit A/D 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 |
| TC7117IJL | 功能描述:LED显示驱动器 3-1/2 Digit A/D w/ Hold 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 |
| TC7117RCPL | 功能描述:LED显示驱动器 w/Hold 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 |
| TC711A | 制造商:Thomas & Betts 功能描述:Fittings Connector 0.5inch Steel |
| TC711A-RT | 制造商:Thomas & Betts 功能描述:Fittings Connector 0.5inch Steel |
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