收藏本站
参数资料
型号： TC7135C/BU
元件分类： ADC
英文描述： 1-CH 4-BIT DUAL-SLOPE ADC, PARALLEL ACCESS, PQFP64
封装： 14 X 14 MM, 2.70 MM PITCH, PLASTIC, MQFP-64
文件页数： 2/28页
文件大小： 443K
代理商： TC7135C/BU
TC7135
DS21460D-page 10
2007 Microchip Technology Inc.
FIGURE 5-2:
Timing Diagrams For
Outputs.
5.1
RUN/HOLD Input
When left open, this pin assumes a logic ‘1’ level. With
a RUN/HOLD = 1, the TC7135 performs conversions
continuously, with a new measurement cycle beginning
every 40,002 clock pulses.
When RUN/HOLD changes to a logic ‘0’, the measure-
ment cycle in progress will be completed, with the data
held and displayed as long as the logic ‘0’ condition
exists.
A positive pulse (>300 nsec) at RUN/HOLD initiates a
new measurement cycle. The measurement cycle in
progress when RUN/HOLD initially assumed the logic
‘0’ state must be completed before the positive pulse
can be recognized as a single conversion run
command.
The new measurement cycle begins with a 10,001
count auto-zero phase. At the end of this phase, the
busy signal goes high.
5.2
STROBE Output
During the measurement cycle, the STROBE control
line is pulsed low five times. The five low pulses occur
in the center of the digit drive signals (D1, D2, D3, D5)
(see Figure 5-3).
D5 (MSD) goes high for 201 counts when the
measurement cycles end. In the center of the D5 pulse,
101 clock pulses after the end of the measurement
cycle, the first STROBE occurs for one half clock pulse.
After the D5 digit strobe, D4 goes high for 200 clock
pulses. The STROBE then goes low 100 clock pulses
after D4 goes high. This continues through the D1 digit
drive pulse.
The digit drive signals will continue to permit display
scanning. STROBE pulses are not repeated until a new
measurement is completed. The digit drive signals will
not continue if the previous signal resulted in an
overrange condition.
The active-low STROBE pulses aid BCD data transfer
to UARTs, processors and external latches. For more
information, please refer to Application Note 784
(DS00784).
FIGURE 5-3:
Strobe Signal Low Five
Times Per Conversion.
Integrator
Output
Overrange when
Applicable
Underrange when
Applicable
System
Zero
10,001
Counts
Signal
Integrate
10,000
Counts
(Fixed)
Reference
Integrate
20,001
Counts (Max)
Full Measurement Cycle
40,002 Counts
Busy
Expanded Scale Below
D5
D4
D3
D2
D1
100
Counts
Digit Scan
STROBE
Auto-Zero
Signal
Integrate
Reference
Integrate
D5
D4
D3
D2
D1
Digit Scan
for Overrange
* First D5 of System Zero and
Reference Integrate One Count
Longer
*
End of Conversion
(MSD)
Data
Busy
B1 B8
STROBE
D5
D4
D3
D2
D1
D4
Data
D3
Data
D2
Data
(LSD)
Data
D5
Data
Note Absence
of STROBE
201
Counts
200
Counts
200
Counts
200
Counts
200
Counts
200
Counts
200
Counts
*
*Delay between Busy going Low and First STROBE pulse is
dependent on Analog Input.
TC7135
Outputs
D5
D1
相关PDF资料
PDF描述
TC7135CJI DUAL-SLOPE ADC, PARALLEL ACCESS, CDIP28
TC7135CLI DUAL-SLOPE ADC, PARALLEL ACCESS, PQCC28
TC7135CPI DUAL-SLOPE ADC, PARALLEL ACCESS, PDIP28
TC7135CLIRT 1-CH DUAL-SLOPE ADC, PQCC28
TC7135CLITR 1-CH DUAL-SLOPE ADC, ACCESS, PQCC28
相关代理商/技术参数
参数描述
TC7135CBU713 功能描述:LED显示驱动器 4-1/2 Digit A/D BCD 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
TC7135CKW 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:4-1/2 Digit A/D Converter
TC7135CLI 功能描述:LED显示驱动器 4-1/2 Digit A/D BCD 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
TC7135CLI713 功能描述:LED显示驱动器 4-1/2 Digit A/D BCD 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
TC7135CPI 功能描述:LED显示驱动器 4-1/2 Digit A/D BCD 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
发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

*型号 *数量 厂商 批号 封装
添加更多采购

我的联系方式

*
*
*