鈥?/div>
"
Input Voltage Range: 4.5 V to 40 V
Quiescent Current: 1.2 mA Typical
Output Current: 10 mA
Temperature Coefficient: 10 ppm/掳C Typical
Guaranteed Temperature Drift Specification
Equivalent to AD580
Standard 8鈥揚in DIP, and 8鈥揚in SOIC Package
Voltage Reference for 8 to 12 Bit D/A Converters
Low TC Zener Replacement
High Stability Current Reference
Voltmeter System Reference
Vin 1
Vout 2
Gnd 3
Value
40
鈥?65 to 150
+175
鈥?40 to +85
0 to + 70
Unit
V
掳C
掳C
掳C
掳C
NC 4
8 NC
7 NC
6 NC
5 NC
8
1
8
1
P1 SUFFIX
PLASTIC PACKAGE
CASE 626
D SUFFIX
PLASTIC PACKAGE
CASE 751
(SO鈥?)
Typical Applications
PIN CONNECTIONS
MAXIMUM RATINGS
(TA = 25掳C, unless otherwise noted.)
Rating
Input Voltage
Storage Temperature
Junction Temperature
Operating Ambient Temperature Range
MC1403B
MC1403
Symbol
VI
Tstg
TJ
TA
ORDERING INFORMATION
Device
MC1403D
MC1403P1
MC1403BD
MC1403BP1
Operating
Temperature Range
TA = 0掳 to +70掳C
TA = 鈥?40掳 to +85掳C
Package
SO鈥?
Plastic DIP
SO鈥?
Plastic DIP
Figure 1. A Reference for Monolithic D/A Converters
1
2 2.5 V
1.0 k
R1
R2
Full Scale
Adjust 500
鈩?/div>
IRef
Reference
Amplifier
1.2 k
R3
* Caution: System stability may be affected if output capacitance
*
exceeds 1.0
碌F.
Using higher capacitance values is not
*
recommended and should be carefully considered.
+ 5.0 V
MC1403
3
Monolithic D/A
Converter
*0.1
碌F
C1
Providing the Reference Current
for Motorola Monolithic D/A Converters
The MC1403 makes an ideal reference for many mono-
lithic 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鈥?/div>
scale adjust on the D/A converter.
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.
漏
Motorola, Inc. 1996
Rev 1
MOTOROLA ANALOG IC DEVICE DATA
1
1
2
3
4
5
6
7
8
