- 您现在的位置：买卖IC网 > PDF目录20199 > TC7126IPL (Microchip Technology)IC ADC 3 1/2DGT LCD DVR 40-DIP PDF资料下载
参数资料
| 型号： | TC7126IPL |
| 厂商： | Microchip Technology |
| 文件页数： | 11/26页 |
| 文件大小： | 0K |
| 描述： | IC ADC 3 1/2DGT LCD DVR 40-DIP |
| 标准包装： | 10 |
| 显示器类型： | LCD |
| 配置： | 7 段显示 |
| 数字或字符： | A/D，3.5 位数字 |
| 电流 - 电源： | 55µA |
| 电源电压： | 9V |
| 工作温度： | -25°C ~ 85°C |
| 安装类型： | 通孔 |
| 封装/外壳： | 40-DIP（0.600"，15.24mm） |
| 供应商设备封装： | 40-PDIP |
| 包装： | 管件 |
TC7126/A
5.0
DIGITAL SECTION
5.1
System Timing
The TC7126A contains all the segment drivers neces-
sary to directly drive a 3-1/2 digit LCD, including an
LCD backplane driver. The backplane frequency is the
external clock frequency divided by 800. For 3 conver-
sions per second, the backplane frequency is 60Hz
with a 5V nominal amplitude. When a segment driver is
in phase with the backplane signal, the segment is
OFF. An out of phase segment drive signal causes the
segment to be ON (visible). This AC drive configuration
results in negligible DC voltage across each LCD seg-
ment, ensuring long LCD life. The polarity segment
driver is ON for negative analog inputs. If V IN + and V IN -
are reversed, this indicator reverses.
The oscillator frequency is divided by four prior to
clocking the internal decade counters. The four-phase
measurement cycle takes a total of 4000 counts
(16,000 clock pulses). The 4000-count cycle is
independent of input signal magnitude.
Each phase of the measurement cycle has the following
length:
1. Auto-Zero Phase: 1000 to 3000 counts
(4000 to 12,000 clock pulses).
For signals less than full scale, the auto-zero
phase is assigned the unused reference
integrate time period.
On the TC7126A, when the TEST pin is pulled to V+,
all segments are turned ON and the display reads -
1888 . During this mode, LCD segments have a
constant DC voltage impressed.
Note:
Do not leave the display in this mode for
2.
Signal Integrate: 1000 counts
(4000 clock pulses).
This time period is fixed. The integration period
is:
more than several minutes. LCDs may be
EQUATION 5-1:
destroyed if operated with DC levels for
extended periods.
T SI = 4000
1
F OSC
The display font and segment drive assignment are
Where: F OSC is the externally set clock frequency.
Display Font
3.
Reference Integrate: 0 to 2000 counts
(0 to 8000 clock pulses).
The TC7126A is a drop-in replacement for the TC7126
and ICL7126, which offer a greatly improved internal
1000's
100's
10's
1's
reference temperature coefficient. No external
component value changes are required to upgrade
existing designs.
FIGURE 5-1:
Assignment
Display Font and Segment
? 2006 Microchip Technology Inc.
DS21458C-page 11
相关PDF资料 |
PDF描述 |
|---|---|
| IDT71V3576S133PF | IC SRAM 4MBIT 133MHZ 100TQFP |
| ESM43DTBS-S189 | CONN EDGECARD 86POS R/A .156 SLD |
| MURS260T3 | DIODE ULTRA FAST 2A 600V SMB |
| IDT71V35761YSA200BQI8 | IC SRAM 4MBIT 200MHZ 165FBGA |
| MC33275MN-3.0R2G | IC REG LDO 3V .3A 8-DFN |
相关代理商/技术参数 |
参数描述 |
|---|---|
| TC7126RCPL | 功能描述:LCD 驱动器 Low Power 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 |
| TC7126RIPL | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:3-1/2 Digit Analog-to-Digital Converters |
| TC7129 | 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 |
| TC7129_06 | 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 |
| TC7129_13 | 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 |
发布紧急采购，3分钟左右您将得到回复。