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参数资料
| 型号： | MC1403P1G |
| 厂商： | ON Semiconductor |
| 文件页数： | 5/8页 |
| 文件大小： | 0K |
| 描述： | IC VREF SERIES PREC 2.5V 8-PDIP |
| 产品变化通告： | Product Obsolescence 01/Jul/2009 |
| 标准包装： | 50 |
| 基准类型： | 串联，精度 |
| 输出电压： | 2.5V |
| 容差： | ±25mV |
| 温度系数： | 40ppm/°C |
| 输入电压： | 4.5 V ~ 40 V |
| 通道数： | 1 |
| 电流 - 静态： | 1.5mA |
| 电流 - 输出： | 10mA |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 通孔 |
| 封装/外壳： | 8-DIP（0.300"，7.62mm） |
| 供应商设备封装： | 8-PDIP |
| 包装： | 管件 |
| 其它名称： | MC1403P1GOS |
MC1403, B
3?1/2?Digit Voltmeter ? Common Anode
Displays, Flashing Overrange
An example of a 3?1/2?digit voltmeter using the
MC14433 is shown in the circuit diagram of Figure 8. The
reference voltage for the system uses an MC1403 2.5 V
reference IC. The full scale potentiometer can calibrate for
a full scale of 199.9 mV or 1.999 V. When switching from
2.0 V to 200 mV operation, R I is also changed, as shown on
the diagram.
When using R C equal to 300 k W , the clock frequency for
the system is about 66 kHz. The resulting conversion time
is approximately 250 ms.
When the input is overrange, the display flashes on and
off. The flashing rate is one?half the conversion rate. This
is done by dividing the EOC pulse rate by 2 with 1/2
MC14013B flip?flop and blanking the display using the
blanking input of the MC14543B.
The display uses an LED display with common anode
digit lines driven with an MC14543B decoder and an
MC1413 LED driver. The MC1413 contains 7 Darlington
transistor drivers and resistors to drive the segments of the
display. The digit drive is provided by four MPS?A12
Darlington transistors operating in an emitter?follower
configuration. The MC14543B, MC14013B and LED
displays are referenced to V EE via Pin 13 of the MC14433.
This places the full power supply voltage across the display.
The current for the display may be adjusted by the value of
the segment resistors shown as 150 W in Figure 8.
+5.0 V
0.1 m F
MC1403
1 2
20 k
?5.0 V
V X
3
0.1 m F
300 k
R C
3
1
11 10
2
12 24
0.1 m F
23
22
+5.0 V
0.1 m F
4 1
2
+5.0 V
16 9
10
7
6
+5.0 V
10
11
Segment Resistors
150 W (7)
R I *
4
5
6
MC14433
21
20
3
5
11
12
13
14
5
4
3
2
12
13
14
15
0.1 m F **
13
?5.0 V
8
6
15
7
1
16
D
0.1 m F
7
8
9
14
15 19 18 17 16
DS1
DS2
DS3
DS4
5
3
4
?5.0 V
6
S
C
R
Q
Q
5.0 V
1
2
8
?5.0 V
?5.0 V
?5.0 V
51 k
MC14013B +5.0 V
Minus Sign
200 W
MPS?A12 Plus Sign
110 W
Common
Anode
LED
Display
f g e d c b a
D S Q 13
* R I = 470 k W for 2.0 V Range
R I = 27 k W for 200 mV Range
** Mylar Capacitor
9
11 C Q 12
R
7 10 14
50 m F
?5.0 V
0.1 m F
MPS?A12
(4)
?5.0 V
+5.0 V
Figure 8. 3?1/2?Digit Voltmeter
http://onsemi.com
5
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MC1403P1G | 制造商:ON Semiconductor 功能描述:Voltage Regulator IC |
| MC1403U | 制造商: 功能描述: 制造商:Motorola Inc 功能描述: 制造商:undefined 功能描述: |
| MC1404 | 制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:PRECISION LOW DRIFT VOLTAGE REFERENCES |
| MC14040 | 制造商:Distributed By MCM 功能描述:SUB ONLY IC 16-PIN DIP |
| MC14040B | 制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:12-Bit Binary Counter |
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