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参数资料
| 型号： | ICL7107CM44Z |
| 厂商： | Intersil |
| 文件页数： | 8/16页 |
| 文件大小： | 0K |
| 描述： | IC ADC 3.5DIGIT LCD/LED 44MQFP |
| 标准包装： | 96 |
| 显示器类型： | LED |
| 配置： | 7 段显示 |
| 数字或字符： | A/D，3.5 位数字 |
| 电源电压： | 4.75 V ~ 5.25 V |
| 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： | 管件 |
| 产品目录页面： | 1236 (CN2011-ZH PDF) |
ICL7106, ICL7107, ICL7107S
absorb the relative large capacitive currents when the back
V+
plane (BP) voltage is switched. The BP frequency is the
V+
BP
clock frequency divided by 800. For three readings/sec., this
is a 60Hz square wave with a nominal amplitude of 5V. The
segments are driven at the same frequency and amplitude
ICL7106
DECIMAL
POINT
SELECT
TO LCD
DECIMAL
POINTS
and are in phase with BP when OFF, but out of phase when
ON. In all cases negligible DC voltage exists across the
segments.
TEST
CD4030
GND
FIGURE 6. EXCLUSIVE ‘OR’ GATE FOR DECIMAL POINT DRIVE
Digital Section
Figures 7 and 8 show the digital section for the ICL7106 and
ICL7107, respectively. In the ICL7106, an internal digital
ground is generated from a 6V Zener diode and a large
P-Channel source follower. This supply is made stiff to
Figure 8 is the Digital Section of the ICL7107. It is identical to
the ICL7106 except that the regulated supply and back plane
drive have been eliminated and the segment drive has been
increased from 2mA to 8mA, typical for instrument size
common anode LED displays. Since the 1000 output (pin 19)
must sink current from two LED segments, it has twice the
drive capability or 16mA.
In both devices, 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
c
c
e
g
c
e
g
c
d
d
d
BACKPLANE
21
LCD PHASE DRIVER
TYPICAL SEGMENT OUTPUT
V+
7
SEGMENT
DECODE
7
SEGMENT
DECODE
7
SEGMENT
DECODE
÷ 200
0.5mA
2mA
SEGMENT
OUTPUT
LATCH
1000’s
COUNTER
100’s
COUNTER
10’s
COUNTER
1’s
COUNTER
INTERNAL DIGITAL GROUND
TO SWITCH DRIVERS
FROM COMPARATOR OUTPUT
1
V+
?
CLOCK
÷ 4
LOGIC CONTROL
6.2V
500 ?
? THREE INVERTERS
ONE INVERTER SHOWN FOR CLARITY
INTERNAL
DIGITAL
V TH = 1V
37
TEST
GROUND
OSC 1
40
OSC 2
39
OSC 3
38
26
V-
FIGURE 7. ICL7106 DIGITAL SECTION
8
FN3082.8
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ICL7107CM44ZT | 功能描述:LED显示驱动器 W/ANNEAL ADC 3 5 DIG LED DRVR COM 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 |
| ICL7107CMH | 制造商:Maxim Integrated Products 功能描述:3 1/2 DIGIT ADC WITH DIRECT LED DISPLAY DRIVE - Bulk |
| ICL7107CMH+ | 制造商:Maxim Integrated Products 功能描述:ADC SGL DUAL SLOPE 3 1/2DIGIT LED 44MQFP - Rail/Tube |
| ICL7107CMH+D | 功能描述:模数转换器 - ADC 3-1/2 Digit ADC w/Direct LCD Driver 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 |
| ICL7107CMH+T | 制造商:Maxim Integrated Products 功能描述:ADC SGL DUAL SLOPE 3 1/2DIGIT LED 44MQFP - Tape and Reel |
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