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MC1403P1

P1-P3P4-P6P7-P8
MC1403, B
http://onsemi.com
4
V , CHANGE IN V
out
(mV)∆
out
V , CHANGE IN V
out
(mV)∆
out
−10
−12
T
A
, TEMPERATURE (°C)
4.0
2.0
0
−2.0
−4.0
−6.0
−8.0
T
A
, TEMPERATURE (°C)
−12
−10
−8.0
−6.0
−4.0
−2.0
0
−14
Figure 3. Typical Change in V
out
versus V
in
(Normalized to V
in
= 15 V @ T
C
= 25°C)
Figure 4. Change in Output Voltage
versus Load Current
(Normalized to V
out
@ V
in
= 15 V, I
out
= 0 mA)
V
in
, INPUT VOLTAGE (V)
2.0
1.0
0
−1.0
−2.0
−3.0
−4.0
−5.0
−6.0
01020304050
V , CHANGE IN V
out
(mV)∆
out
25°C
0°C
75°C
I
out
, OUTPUT CURRENT (mA)
∆
V
out
, CHANGE IN OUTPUT VOLTAGE (mV)
10
9.0
8.0
7.0
6.0
5.0
4.0
3.0
2.0
1.0
0
0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10
75°C
0°C
25°C
Figure 5. Quiescent Current versus Temperature
(V
in
= 15 V, I
out
= 0 mA)
I
1
, QUIESCENT CURRENT (mA)
T
A
, TEMPERATURE (°C)
0
1.25
1.20
1.15
1.10
1.05
1.00
0.95
0.90
806040200−40 −20
Figure 6. Change in V
out
versus Temperature
(Normalized to V
out
@ V
in
= 15 V)
Figure 7. Change in V
out
versus Temperature
(Normalized to T
A
= 25°C, V
in
= 15 V, I
out
= 0 mA)
8570503010−10−30
806040200−40 −20 8570503010−10−30
V
in
= 5.0 V
V
in
= 15 V
I
out
= 2 mA
806040200−40 −20
85
70503010−10−30
I
O
= 0 mA
= 2.0 mA
= 5.0 mA
= 8.0 mA
MC1403, B
http://onsemi.com
5
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, 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 in Figure 8.
Figure 8. 3−1/2−Digit Voltmeter
Common
Anode
LED
Display
* R
I
= 470 k for 2.0 V Range
R
I
= 27 k for 200 mV Range
** Mylar Capacitor
0.1F
3
21
+5.0 V
0.1F
R
C
300 k
V
X
R
I
*
20 k
−5.0 V
0.1 F
+5.0 V
0.1 F
0.1 F
Plus Sign
50 F
Minus Sign
Segment Resistors
150 (7)
MPS−A12
+5.0 V
MC14013B
51 k
MC14433
0.1 F
CQ
Q
R
S
D
14
DS1
6
710
−5.0 V
−5.0 V
C
8
6
161
19
5.0 V
D
S
R
Q
Q
+5.0 V
MPS−A12
(4)
7
MC1403
200
110
0.1 F **
DS2
DS3
DS4
1
2
8
13
1211
9
4
3
5
10
1
2
3
4
5
9
5
3
2
4
16
15
14
13
11
12
7
15
14
13
6
11
10
14
16171815
8
7
6
5
4
13
12
9
22
23
21
24
1
12
20
21011
3
bacdegf
MC14543B
MC1413
+5.0 V +5.0 V
−5.0 V
−5.0 V −5.0 V
−5.0 V
−5.0 V
MC1403, B
http://onsemi.com
6
ORDERING INFORMATION
Device Package Operating Temperature Range Shipping
†
MC1403D SOIC−8 98 Units/Rail
MC1403DG SOIC−8
(Pb−Free)
98 Units/Rail
MC1403DR2 SOIC−8 2500 Tape/Reel
MC1403DR2G SOIC−8
(Pb−Free)
T
A
= 0° to +70°C
2500 Tape/Reel
MC1403P1 PDIP−8 1000 Units/Rail
MC1403P1G PDIP−8
(Pb−Free)
1000 Units/Tubes
MC1403BD SOIC−8 98 Units/Rail
MC1403BDG SOIC−8
(Pb−Free)
98 Units/Rail
MC1403BDR2 SOIC−8
T
A
= −40° to +85°C
2500 Tape/Reel
MC1403BP1 PDIP−8−8
A
1000 Units/Rail
MC1403BP1G PDIP−8−8
(Pb−Free)
1000 Units/Rail
†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging
Specifications Brochure, BRD8011/D.
P1-P3P4-P6P7-P8

MC1403P1

Mfr. #:
Buy MC1403P1
Manufacturer:
ON Semiconductor
Description:
Voltage References 2.5V +/-25mv 10mA
Lifecycle:
New from this manufacturer.
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