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参数资料
| 型号： | ICL7107CPLZ |
| 厂商： | Intersil |
| 文件页数： | 9/16页 |
| 文件大小： | 0K |
| 描述： | IC ADC 3.5DIGIT LCD/LED 40DIP |
| 标准包装： | 9 |
| 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： | 通孔 |
| 封装/外壳： | 40-DIP（0.600"，15.24mm） |
| 供应商设备封装： | 40-DIP |
| 包装： | 管件 |
| 产品目录页面： | 1236 (CN2011-ZH PDF) |
ICL7106, ICL7107, ICL7107S
a
a
a
a
f
b
f
b
f
b
b
e
g
c
c
e
g
c
e
g
c
TYPICAL SEGMENT OUTPUT
d
7
SEGMENT
DECODE
d
7
SEGMENT
DECODE
d
7
SEGMENT
DECODE
0.5mA
V+
LATCH
TO
SEGMENT
1000’s
COUNTER
100’s
COUNTER
10’s
COUNTER
1’s
COUNTER
8mA
TO SWITCH DRIVERS
DIGITAL GROUND
FROM COMPARATOR OUTPUT
1
?
V+
CLOCK
÷ 4
LOGIC CONTROL
500 ?
37
V+
TEST
? THREE INVERTERS
ONE INVERTER SHOWN FOR CLARITY
27
DIGITAL
GROUND
OSC 1
40
OSC 2
39
OSC 3
38
FIGURE 8. ICL7107 DIGITAL SECTION
System Timing
Figure 9 shows the clocking arrangement used in the
ICL7106 and ICL7107. Two basic clocking arrangements
INTERNAL TO PART
÷ 4
CLOCK
can be used:
1. Figure 9A. An external oscillator connected to pin 40.
2. Figure 9B. An R-C oscillator using all three pins.
40
39
38
The oscillator frequency is divided by four before it clocks the
decade counters. It is then further divided to form the three
convert-cycle phases. These are signal integrate (1000
counts), reference de-integrate (0 to 2000 counts) and
auto-zero (1000 to 3000 counts). For signals less than full
scale, auto-zero gets the unused portion of reference
de-integrate. This makes a complete measure cycle of 4,000
GND ICL7107
TEST ICL7106
FIGURE 9A.
INTERNAL TO PART
counts (16,000 clock pulses) independent of input voltage.
For three readings/second, an oscillator frequency of 48kHz
would be used.
To achieve maximum rejection of 60Hz pickup, the signal
÷ 4
CLOCK
integrate cycle should be a multiple of 60Hz. Oscillator
40
39
38
frequencies of 240kHz, 120kHz, 80kHz, 60kHz, 48kHz,
40kHz, 33 1 / 3 kHz, etc. should be selected. For 50Hz
rejection, Oscillator frequencies of 200kHz, 100kHz,
R
C
RC OSCILLATOR
66 2 / 3 kHz, 50kHz, 40kHz, etc. would be suitable. Note that
40kHz (2.5 readings/second) will reject both 50Hz and 60Hz
(also 400Hz and 440Hz).
9
FIGURE 9B.
FIGURE 9. CLOCK CIRCUITS
FN3082.8
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ICL7107CQ | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Analog-to-Digital Converter， 3-1/2-Digit |
| ICL7107CQH | 制造商:Maxim Integrated Products 功能描述:IC,CMOS,3 1/2-DIGIT DUAL SLOPE A/D - Rail/Tube |
| ICL7107CQH+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 |
| ICL7107CQH+TD | 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 |
| ICL7107CQH-D | 功能描述:模数转换器 - ADC 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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