ON MC1403BD Precision low voltage reference Datasheet

Order this document by MC1403/D
A precision band–gap voltage reference designed for critical
instrumentation and D/A converter applications. This unit is designed to work
with D/A converters, up to 12 bits in accuracy, or as a reference for power
supply applications.
• Output Voltage: 2.5 V 25 mV
•
•
•
•
•
•
•
PRECISION LOW VOLTAGE
REFERENCE
SEMICONDUCTOR
TECHNICAL DATA
"
Input Voltage Range: 4.5 V to 40 V
Quiescent Current: 1.2 mA Typical
P1 SUFFIX
PLASTIC PACKAGE
CASE 626
Output Current: 10 mA
Temperature Coefficient: 10 ppm/°C Typical
8
1
Guaranteed Temperature Drift Specification
D SUFFIX
PLASTIC PACKAGE
CASE 751
(SO–8)
Equivalent to AD580
8
Standard 8–Pin DIP, and 8–Pin SOIC Package
1
Typical Applications
•
•
•
•
Voltage Reference for 8 to 12 Bit D/A Converters
PIN CONNECTIONS
Low TC Zener Replacement
Vin 1
8 NC
Vout 2
7 NC
Gnd 3
6 NC
NC 4
5 NC
High Stability Current Reference
Voltmeter System Reference
MAXIMUM RATINGS (TA = 25°C, unless otherwise noted.)
Symbol
Value
Unit
VI
40
V
Storage Temperature
Tstg
– 65 to 150
°C
Junction Temperature
TJ
+175
°C
Operating Ambient Temperature Range
MC1403B
MC1403
TA
Rating
Input Voltage
°C
°C
– 40 to +85
0 to + 70
ORDERING INFORMATION
Device
MC1403D
MC1403P1
MC1403BD
MC1403BP1
Operating
Temperature Range
TA = 0° to +70°C
TA = – 40° to +85°C
Package
SO–8
Plastic DIP
SO–8
Plastic DIP
Figure 1. A Reference for Monolithic D/A Converters
+ 5.0 V
1
MC1403
3
2 2.5 V
Full Scale
Adjust 500 Ω
1.0 k
R1
R2
Reference
Amplifier
IRef
*0.1 µF
C1
Providing the Reference Current
for Motorola Monolithic D/A Converters
The MC1403 makes an ideal reference for many monolithic D/A converters, requiring a stable current reference of
nominally 2.0 mA. This can be easily obtained from the
MC1403 with the addition of a series resistor, R1. A variable
resistor, R2, is recommended to provide means for full–
scale adjust on the D/A converter.
1.2 k
R3
* Caution: System stability may be affected if output capacitance
* exceeds 1.0 µF. Using higher capacitance values is not
* recommended and should be carefully considered.
The resistor R3 improves temperature performance by
matching the impedance on both inputs of the D/A reference
amplifier. The capacitor decouples any noise present on the
reference line. It is essential if the D/A converter is located
any appreciable distance from the reference.
A single MC1403 reference can provide the required
current input for up to five of the monolithic D/A converters.
 Motorola, Inc. 1996
MOTOROLA ANALOG IC DEVICE DATA
Monolithic D/A
Converter
Rev 1
1
MC1403, B
ELECTRICAL CHARACTERISTICS (Vin = 15 V, TA = 25°C, unless otherwise noted.)
Characteristic
Output Voltage
(IO = 0 mA)
Temperature Coefficient of Output Voltage*
MC1403
Symbol
Min
Typ
Max
Unit
Vout
2.475
2.5
2.525
V
∆VO/∆T
–
10
40
ppm/°C
∆VO
Output Voltage Change*
(Over specified temperature range)
MC1403B 0 to + 70°C
MC1403B – 40 to + 85°C
mV
–
–
–
–
7.0
12.5
–
–
1.2
0.6
4.5
3.0
Line Regulation (IO = 0 mA)
(15 V
VI
40 V)
(4.5 V
VI
15 V)
Regline
Load Regulation
(0 mA < IO < 10 mA)
Regload
–
–
10
mV
IQ
–
1.2
1.5
mA
Quiescent Current
(IO = 0 mA)
mV
* Guaranteed but not tested.
Figure 2. MC1403, B Schematic
Vin
2.0 k
2.0 k
2.0 k
2.0 k
1.0 k
32
Vout
1.5 k
C1
30 pF
1.73 k
2.37 k
10 k
1.483 k
1.0 k
5.61 k
This device contains 15 active transistors.
2
MOTOROLA ANALOG IC DEVICE DATA
MC1403, B
Figure 4. Change in Output Voltage
versus Load Current
Figure 3. Typical Change in Vout versus Vin
(Normalized to Vout @ Vin = 15 V, Iout = 0 mA)
∆Vout , CHANGE IN OUTPUT VOLTAGE (mV)
(Normalized to Vin = 15 V @ TC = 25°C)
∆ Vout , CHANGE IN Vout (mV)
2.0
1.0
25°C
0
–1.0
0°C
–2.0
75°C
–3.0
–4.0
–5.0
–6.0
0
10
20
30
Vin, INPUT VOLTAGE (V)
40
10
9.0
8.0
7.0
6.0
5.0
4.0
75°C
3.0
2.0
0°C
1.0
0
50
25°C
0
1.0
2.0
3.0 4.0 5.0 6.0
7.0
Iout, OUTPUT CURRENT (mA)
8.0
9.0
10
Figure 5. Quiescent Current versus Temperature
Figure 6. Change in Vout versus Temperature
(Vin = 15 V, Iout = 0 mA)
(Normalized to Vout @ Vin = 15 V)
1.20
∆ Vout , CHANGE IN Vout (mV)
I1, QUIESCENT CURRENT (mA)
1.25
1.15
1.10
1.05
1.00
0.95
0.90
0
–40 –30 –20 –10
Iout = 2 mA
Vin = 15 V
0
–2.0
Vin = 5.0 V
–4.0
–6.0
–8.0
–10
–12
0
10 20 30 40 50
TA, TEMPERATURE (°C)
60 70
–14
–40 –30 –20 –10
80 85
0
10 20 30 40 50
TA, TEMPERATURE (°C)
60 70
80 85
Figure 7. Change in Vout versus Temperature
(Normalized to TA = 25°C, Vin = 15 V, Iout = 0 mA)
∆ Vout , CHANGE IN Vout (mV)
4.0
2.0
IO = 0 mA
= 2.0 mA
0
–2.0
= 8.0 mA
–4.0
= 5.0 mA
–6.0
–8.0
–10
–12
–40 –30 –20 –10
0
10
20
30
40
50
60 70
80 85
TA, TEMPERATURE (°C)
MOTOROLA ANALOG IC DEVICE DATA
3
MC1403, B
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 Ω in Figure 8.
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 kΩ, 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
Figure 8. 3–1/2–Digit Voltmeter
MC1403
20 k
2
–5.0 V
0.1 µF
+5.0 V
3
0.1 µF
300 k
RC
11 10
VX
2
MC14433
0.1 µF **
13
7
8
0.1 µF
4 1
2
3
5
23
22
21
20
4
5
6
+5.0 V
0.1 µF
12 24
3
1
RI *
+5.0 V
0.1 µF
–5.0 V
6
8
9
14
Segment Resistors
150 Ω (7)
16 9
7
6
5
4
3
2
1
10
11
12
13
14
15
7
–5.0 V
MC1413
1
MC14543B
+5.0 V
–5.0 V
Minus Sign
–5.0 V
15 19 18 17 16
–5.0 V
6
DS2
5
DS3
3
DS4
D
C
S
R
Q
Q
1
2
51 k
MC14013B
4
+5.0 V
8
9
D S Q 13
11 C
Q 12
R
14
7 10
* RI = 470 kΩ for 2.0 V Range
RI = 27 kΩ for 200 mV Range
** Mylar Capacitor
–5.0 V
4
f g e d c b a
200 Ω
MPS–A12 Plus Sign
110 Ω
5.0 V
DS1
10
11
12
13
14
15
16
50 µF
Common
Anode
LED
Display
0.1 µF
–5.0 V
MPS–A12
(4)
+5.0 V
MOTOROLA ANALOG IC DEVICE DATA
MC1403, B
OUTLINE DIMENSIONS
P1 SUFFIX
PLASTIC PACKAGE
CASE 626–05
ISSUE K
8
5
NOTES:
1. DIMENSION L TO CENTER OF LEAD WHEN
FORMED PARALLEL.
2. PACKAGE CONTOUR OPTIONAL (ROUND OR
SQUARE CORNERS).
3. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
–B–
1
4
F
DIM
A
B
C
D
F
G
H
J
K
L
M
N
–A–
NOTE 2
L
C
J
–T–
N
SEATING
PLANE
D
M
K
MILLIMETERS
MIN
MAX
9.40
10.16
6.10
6.60
3.94
4.45
0.38
0.51
1.02
1.78
2.54 BSC
0.76
1.27
0.20
0.30
2.92
3.43
7.62 BSC
–––
10_
0.76
1.01
INCHES
MIN
MAX
0.370
0.400
0.240
0.260
0.155
0.175
0.015
0.020
0.040
0.070
0.100 BSC
0.030
0.050
0.008
0.012
0.115
0.135
0.300 BSC
–––
10_
0.030
0.040
G
H
0.13 (0.005)
M
T A
M
B
M
D SUFFIX
PLASTIC PACKAGE
CASE 751–05
(SO–8)
ISSUE N
NOTES:
1. DIMENSIONING AND TOLERANCING PER
ANSI Y14.5M, 1982.
2. CONTROLLING DIMENSION: MILLIMETER.
3. DIMENSIONS A AND B DO NOT INCLUDE
MOLD PROTRUSION.
4. MAXIMUM MOLD PROTRUSION 0.15 (0.006)
PER SIDE.
5. DIMENSION D DOES NOT INCLUDE DAMBAR
PROTRUSION. ALLOWABLE DAMBAR
PROTRUSION SHALL BE 0.127 (0.005) TOTAL
IN EXCESS OF THE D DIMENSION AT
MAXIMUM MATERIAL CONDITION.
–A–
8
5
–B–
1
4X
P
0.25 (0.010)
4
M
B
M
G
R
C
–T–
8X
K
D
0.25 (0.010)
M
T B
SEATING
PLANE
S
A
M_
S
MOTOROLA ANALOG IC DEVICE DATA
X 45 _
F
J
DIM
A
B
C
D
F
G
J
K
M
P
R
MILLIMETERS
MIN
MAX
4.80
5.00
3.80
4.00
1.35
1.75
0.35
0.49
0.40
1.25
1.27 BSC
0.18
0.25
0.10
0.25
0_
7_
5.80
6.20
0.25
0.50
INCHES
MIN
MAX
0.189
0.196
0.150
0.157
0.054
0.068
0.014
0.019
0.016
0.049
0.050 BSC
0.007
0.009
0.004
0.009
0_
7_
0.229
0.244
0.010
0.019
5
MC1403, B
NOTES
6
MOTOROLA ANALOG IC DEVICE DATA
MC1403, B
NOTES
MOTOROLA ANALOG IC DEVICE DATA
7
MC1403, B
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specifically disclaims any and all liability, including without limitation consequential or incidental damages. “Typical” parameters which may be provided in Motorola
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8
◊
MC1403/D
MOTOROLA ANALOG IC DEVICE
DATA
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