www.fairchildsemi.com
FAN4041
Precision Micropower Shunt Voltage Reference
Features
•
•
•
•
•
•
Adjustable shunt reference
Tolerances to +0.5% (25°C)
Low output noise
Low temperature coefficient to 100 ppm/°C max
Small packages
Extended operating current range
Description
The FAN4041 adjustable precision shunt references are ideal
for space- and cost-sensitive applications. They are available
with output voltage tolerances of 0.5% and 1%. They also
have excellent temperature coefficients, to 100ppm/°C for
the tighter tolerance grades. The FAN4041 series has an
extended operating current range, sinking as much as 25mA.
The FAN4041 series is available in SOT-23 and TO-92
packages.
Applications
•
•
•
•
•
Portable equipment
Disk drives
Instrumentation
Audio equipment
Data acquisition systems
Connection Diagrams
SOT-23
FB
1
3 –
+
2
Top View
TO-92
FB
3
+
2
–
1
Bottom View
REV. 1.0.2 9/10/01
FAN4041
PRODUCT SPECIFICATION
Absolute Maximum Ratings
1
Ratings are over full operating free-air temperature range unless otherwise noted.
Parameter
Continuous cathode current, IK
Power dissipation
Maximum Output Voltage (FAN4041)
Storage Temperature Range
Lead Temperature (Soldering, 10 sec.)
-65
Min.
-30
Max.
30
12
150
300
Unit
mA
See Dissipation Rating Table
V
°C
°C
Notes:
1. Functional operation under these conditions is not implied. Permanent damage may occur if the device is subjected to
conditions outside these ratings.
Recommended Operating Conditions
Parameter
Continuous cathode current, IK
Operating temperature range in free air, TA
Output Voltage Range (FAN4041)
Min.
0.07
-40
1.24
Max.
25
85
10
Unit
mA
°C
V
Dissipation Rating Table
Package
TO-92
SOT23
Power Rating
TA
≤
25°C
550mW
306mW
Derating Factor
TA
≥
25°C
5.5mW/°C
3.0mW/°C
Power Rating
TA = 70°C
302mW
168mW
Equivalent Schematic
+
+
_
V
REF
*
FB
*
_
*
External adjust components.
2
REV. 1.0.2 9/10/01
PRODUCT SPECIFICATION
FAN4041
Guaranteed Electrical Characteristics, FAN4041
(T
A
= 25°C unless otherwise specified, in free air)
The
•
denotes specifications which apply over the full operating temperature range.
Limits
Symbol
VREF
TCVRef
IRMIN
∆V
REF/∆T
∆V
REF
(∆IK)
Parameter
Reference Voltage
Reference Voltage Tolerance
Mimimum Operating Current
Reference Voltage Temperature
Coefficient
Reference Voltage Change with
Operating Current
Conditions
IK = 100µA, V
OUT
= 5V
IK = 100µA, V
OUT
= 5V
C
1.220
±6.2
±14
65
±100
2.0
8
12
-2.5
120
D
1.220
±12
±24
70
±150
2.5
10
15
-3.0
200
Units
V*
mV
mV
µA
ppm/°C
mV
mV
mV*
mV/V
nA
IK = 1mA
I
RMIN
≤
I
K
≤1mA
1mA
≤
I
K
≤
12mA
1mA
≤
I
K
≤
25mA
I
µ
=1mA
•
•
•
•
•
•
•
∆V
REF
(∆V
O
) Reference Voltage Change with Output
Voltage
I
FB
Feedback Current
ZKA
Reverse Dynamic Impedance
eN
∆V
REF
*Typical.
Wideband Noise
Reference Voltage Long-term Stability
IK=1mA, f=120Hz,
IAC=0.1IK
V
OUT
= V
REF
V
OUT
= 10V
IK=100µA, V
OUT
= V
REF
10Hz
≤
f
≤
10kHz
t=1000hrs, T=25°C,
IK=100µA
0.3
2
20
120
0.3
2
20
120
Ω*
Ω*
µVRMS*
ppm*
REV. 1.0.2 9/10/01
3
FAN4041
PRODUCT SPECIFICATION
Mechanical Dimensions
TO-92 Package
Inches
Min.
A
b
c
øD
E
e
e1
L
S
α
.170
.015
.014
.175
.125
.095
.045
.500
.080
4°
Max.
.210
.021
.020
.205
.165
.105
.055
—
.115
6°
Millimeters
Min.
4.32
.38
.36
4.45
3.18
2.41
1.14
12.70
2.03
4°
Max.
5.33
.53
.51
5.21
4.19
2.67
1.40
—
2.92
6°
Notes:
Notes
1. Package outline exclusive of any mold flashes dimension.
2. Package outline exclusive of burr dimension.
Symbol
S
c
E-PIN C 1/16
A
b
e
α
E
e1
øD
L
4
REV. 1.0.2 9/10/01
PRODUCT SPECIFICATION
FAN4041
Mechanical Dimensions
(continued)
SOT-23 Package
Inches
Min.
A
A1
B
c
D
E
e
e1
H
L
S
.035
.0004
.012
.003
.110
Max.
.044
.004
.020
.008
.120
Millimeters
Min.
Max.
Notes:
Notes
1. Dimensions are inclusive of plating.
2. Dimensions are exclusive of mold flash & metal burr.
3. Comply to JEDEC TO-236.
4. This drawing is for matrix leadframe only.
Symbol
.047
.055
.037 BSC
.075 BSC
.083
.104
.021 REF
.016 Nom
.89
1.12
.01
.10
.30
.50
.08
.20
2.80
3.04
1.20
1.40
.95 BSC
1.90 BSC
2.10
2.64
.54 REF
.395 Nom
D
e1
e
S
c
L
E
H
B
A1
A
REV. 1.0.2 9/10/01
5
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