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参数资料
| 型号： | ICL7136CM44 |
| 厂商： | Intersil |
| 文件页数： | 9/15页 |
| 文件大小： | 0K |
| 描述： | IC ADC 3.5 DIGIT LCD 44-MQFP |
| 标准包装： | 96 |
| 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： | 70µA |
| 电源电压： | 9V |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 44-QFP |
| 供应商设备封装： | 44-MQFP（10x10） |
| 包装： | 托盘 |
ICL7136
Digital Section
V+
BP
V+
Figures 6 shows the digital section for the ICL7136. In the
ICL7136, an internal digital ground is generated from a 6V
Zener diode and a large P-Channel source follower. This
ICL7136
TEST
DECIMAL
POINT
SELECT
CD4030
TO LCD
DECIMAL
POINTS
supply is made stiff to absorb the relatively large capacitive
currents when the back plane (BP) voltage is switched. The
BP frequency is the clock frequency divided by 800. For
three readings/second this is a 60Hz square wave with a
nominal amplitude of 5V. The segments are driven at the
same frequency and amplitude and are in phase with BP
GND
FIGURE 5. EXCLUSIVE “OR” GATE FOR DECIMAL POINT DRIVE
when OFF, but out of phase when ON. In all cases negligible
DC voltage exists across the segments.
The polarity indication is “on” for negative analog inputs. If IN
LO and IN HI are reversed, this indication can be reversed
also, if desired.
a
a
a
a
f
b
f
b
f
b
b
e
g
d
c
c
e
g
d
c
e
g
d
c
BACKPLANE
21
LCD PHASE DRIVER
TYPICAL SEGMENT OUTPUT
V+
7
SEGMENT
DECODE
7
SEGMENT
DECODE
7
SEGMENT
DECODE
÷ 200
0.5mA
SEGMENT
OUTPUT
LATCH
2mA
INTERNAL DIGITAL GROUND
1000’s
COUNTER
100’s
COUNTER
10’s
COUNTER
1’s
COUNTER
TO SWITCH DRIVERS
FROM COMPARATOR OUTPUT
1
V+
? THREE INVERTERS
ONLY ONE INVERTER SHOWN
FOR CLARITY
40
?
CLOCK
39
38
÷ 4
INTERNAL
DIGITAL
GROUND
LOGIC CONTROL
V TH = 1V
6.2V
500 ?
37
26
TEST
V-
OSC 1
OSC 2
OSC 3
FIGURE 6. ICL7136 DIGITAL SECTION
9
FN3086.6
July 21, 2005
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ICL7136CM44Z | 功能描述:模数转换器 - ADC W/ANNEAL ADC 3.5DIG LWPWR710644MQFPCOM RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
| ICL7136CM44ZT | 功能描述:LCD 驱动器 W/ANNEAL ADC 3 5 DIG LW PWR 7106 COM 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 |
| ICL7136CMH | 制造商:Maxim Integrated Products 功能描述:LOW POWER, 3 1/2 DIGIT ADC WITH DIRECT LCD DR - Bulk |
| ICL7136CMH+ | 制造商:Maxim Integrated Products 功能描述:ADC SGL DUAL SLOPE 3 1/2DIGIT LCD 44MQFP - Rail/Tube |
| ICL7136CMH+D | 功能描述:模数转换器 - ADC Low-Pwr 3 1/2 Digit ADC w/Direct LCD Dvr RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
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