Semiconductor
A431xM
Programmable Voltage Reference
Features
•
•
•
•
•
•
Programmable output voltage to 20 volts
Sink current capability of 1.0mA to 100mA
Low dynamic impedance 0.15Ω typical
Temperature compensated for operation over full rated operating temperature
Equivalent full-range temperature coefficient of 50ppm/
°C
(Typical)
Low output Noise voltage
Ordering Information
Type NO.
A431xM
Marking
A431□
□:
Grade => B :±0.5% , A :±1%
Package Code
TO-92M
Outline Dimensions
Symbol
4.0±0.1
3.0±0.1
unit :
mm
0.44 REF
0.52 REF
14.0±0.40
Functional block diagram
1.27 Typ.
2.54±0.1.
1 2 3
0.7 Typ.
0.42 Typ.
3.0±0.1
3.8 Min.
PIN Connections
1. Reference
2. Anode
3. Cathode
KSI-9039-003
1
A431xM
Absolute maximum ratings
(Operating ambient temperature range applies unless other specified)
Parameter
Cathode to Anode voltage
Cathode current range
Reference input current range
Power dissipation
Operating temperature range
Storage temperature range
Symbol
V
KA
I
KA
I
ref
P
D
T
opr
T
stg
Ratings
20
-100 ~+150
-0.05~+10
500
-40~+85
-65~+150
Unit
V
mA
mA
mW
°C
°C
Recommended operating conditions
Parameter
Cathode to Anode voltage
Cathode current range
Symbol
V
KA
I
KA
Ratings
Min.
V
ref
1.0
Max.
18
100
Unit
V
mA
Electrical Characteristics
(Ambient temperature at 25°C, unless otherwise noted.)
Parameter
Reference input voltage
(Fig. 1, Note 1)
Deviation of reference input voltage
Over temperature(Fig. 1, Note 1,2)
Ratio of change in reference input
Voltage to the change in cathode
Voltage(Fig. 2)
Reference input current(Fig. 2)
Deviation of reference input current
over temperature(Fig. 2)
Minimum cathode current for
Regulation(Fig. 1)
Off-state cathode current(Fig. 3)
Dynamic impedance(Fig. 1, Note 3)
Symbol
V
ref
∆V
ref
∆V
ref
∆V
KA
I
ref
∆I
ref
I
MIN
I
OFF
Z
KA
Condition
A431BM
V
KA
=V
ref
,
I
KA
=10mA
A431AM
V
KA
=V
ref
, I
KA
=10mA
@Ta=T
LOW
to T
HIGH
I
KA
=10mA
∆V
KA
=10V-V
ref
∆V
KA
=20V-10V
I
KA
=10mA
R1=10KΩ, R2=∞
I
KA
=10mA
R1=10KΩ, R2=∞
V
KA
=V
ref
V
KA
=20V, V
ref
=0V
V
KA
=V
ref
, f≤1.0KHz
I
KA
=1.0mA-100mA
Min.
2.482
2.470
-
-
-
-
-
-
-
-
Typ.
2.495
7.0
1.2
0.7
1.8
0.4
0.35
2.7
0.14
Max.
2.508
2.520
30
2.7
2.0
4.0
2.5
1.0
1000
0.5
Unit
V
mV
mV/V
µA
µA
mA
nA
Ω
Fig. 1
Fig. 2
Fig. 3
<Note 1> : T
LOW
=-40°C, T
HIGH
=+85°C , <Note 2> :
∆V
ref
= V
ref
Max. - V
ref
Min.
, <Note 3> : Z
KA
=
∆V
KA
/
∆I
KA
KSI-9039-003
2
A431xM
Characteristic diagrams
Fig. 4 I
KA
vs. V
KA
Fig. 5 I
MIN
vs. V
KA
Fig. 6
∆V
ref
vs. T
a
Fig. 7 Gv vs. frequency
Fig. 8 Pulse response
KSI-9039-003
3
A431xM
These AUK products are intended for usage in general electronic equipments(Office and
communication equipment, measuring equipment, domestic electrification, etc.).
Please make sure that you consult with us before you use these AUK products in equipm-
ents which require high quality and/or reliability, and in equipments which could have
major impact to the welfare of human life(atomic energy control, airplane, spaceship, traffic
signal, combustion central, all types of safety device, etc.).
AUK cannot accept liability to any damage which may occur in case these AUK products
were used in the mentioned equipments without prior consultation with AUK.
KSI-9039-003
4
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