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參數資料
型號: MC1403P1
廠商: ON SEMICONDUCTOR
元件分類: 基準電壓源/電流源
英文描述: ExpressCard Single Power Interface Switch 24-HTSSOP -40 to 85
中文描述: 1-OUTPUT THREE TERM VOLTAGE REFERENCE, 2.5 V, PDIP8
封裝: PLASTIC, DIP-8
文件頁數: 4/8頁
文件大小: 125K
代理商: MC1403P1
MC1403, B
4
MOTOROLA ANALOG IC DEVICE DATA
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, RI is also changed, as shown on the diagram.
When using RC equal to 300 k
, 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 VEE 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
in Figure 8.
Figure 8. 3–1/2–Digit Voltmeter
Common
Anode
LED
Display
* RI = 470 k
for 2.0 V Range
RI = 27 k
for 200 mV Range
** Mylar Capacitor
0.1
μ
F
3
2
+5.0 V
0.1
μ
F
RC
300 k
VX
RI *
20 k
–5.0 V
0.1
μ
F
+5.0 V
0.1
μ
F
0.1
μ
F
Plus Sign
110
50
μ
F
Minus Sign
Segment Resistors
150
(7)
MPS–A12
+5.0 V
MC14013B
51 k
MC14433
0.1
μ
F
C
Q
Q
R
S
D
14
DS1
6
7 10
–5.0 V
–5.0 V
C
8
6
16
1
19
5.0 V
D
S
R
Q
Q
+5.0 V
MPS–A12
(4)
7
MC1403
200
0.1
μ
F **
DS2
DS3
DS4
1
2
8
13
12
11
9
4
3
5
10
11
12
1
2
3
4
5
9
5
3
2
4
16
15
14
13
7
6
15
14
13
11
12
10
14
16
17
18
15
8
7
6
5
4
13
9
22
21
20
23
24
1
12
2
10
11
3
b a
c
d
e
g
f
M
M
+5.0 V
+5.0 V
–5.0 V
–5.0 V
–5.0 V
–5.0 V
–5.0 V
相關PDF資料
PDF描述
MC14042 Dual Slot ExpressCard(TM) Power-Interface Switch 32-HTSSOP -40 to 85
MC14042B Quad Transparent Latch
MC14042BCP Quad Transparent Latch
MC14042BD Quad Transparent Latch
MC14042BDR2 Quad Transparent Latch
相關代理商/技術參數
參數描述
MC1403P1G 功能描述:基準電壓& 基準電流 2.5V +/-25mv 10mA RoHS:否 制造商:STMicroelectronics 產品:Voltage References 拓撲結構:Shunt References 參考類型:Programmable 輸出電壓:1.24 V to 18 V 初始準確度:0.25 % 平均溫度系數(典型值):100 PPM / C 串聯 VREF - 輸入電壓(最大值): 串聯 VREF - 輸入電壓(最小值): 分流電流(最大值):60 mA 最大工作溫度:+ 125 C 封裝 / 箱體:SOT-23-3L 封裝:Reel
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 制造商全稱: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
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