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www.fairchildsemi.com
FAN4040
Precision Micropower Shunt Voltage Reference
Features
•
•
•
•
•
•
Fixed 2.500V and 3.300V
Tolerances to ±0.1% (25
°
C)
Low output noise
Low temperature coefficient to 100ppm/°C
Small package
Extended operating current range
Description
The FAN4040 series of precision shunt references are ideal
for space- and cost-sensitive applications. They are available
in two output voltages (2.500V and 3.300V) and with four
output voltage tolerances (0.1%, 0.2%, 0.5% and 1%). They
also have excellent temperature coefficients, to 100ppm/
°
C
for the tighter tolerance grades. The FAN4040 series has an
extended operating current range, sinking as much as 25mA.
The FAN4040 series is available in SOT-23 package.
Applications
•
•
•
•
•
Portable equipment
Disk drives
Instrumentation
Audio equipment
Data acquisition systems
Connection Diagrams
SOT-23
+
1
3*
–
2
*This pin must be left floating
or connected to pin 2.
Top View
REV. 1.0.1 9/29/00
FAN4040
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
Storage Temperature Range
Lead Temperature (Soldering, 10 sec.)
Min.
-30
-65
Max.
30
150
300
Unit
mA
See Dissipation Rating Table
°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
Min.
0.025
-40
Max.
25
85
Unit
mA
°C
Dissipation Rating Table
Package
SOT23
1
Power Rating
TA
≤
25
°
C
306mW
Derating Factor
TA
≥
25
°
C
3.0mW/°C
Power Rating
TA = 70
°
C
168mW
Note:
1. It is recommended to connect pin 3 to pin 2 to ensure optimal thermal performance.
Equivalent Schematic
+
+
_
_
2
REV. 1.0.1 9/29/00
PRODUCT SPECIFICATION
FAN4040
Guaranteed Electrical Characteristics, FAN4040-2.5
(T
A
= 25°C unless otherwise specified, in free air)
The
•
denotes specifications which apply over the full operating temperature range.
Symbol
VR
TCVR
Parameter
Reverse Breakdown Voltage
Reverse Breakdown Voltage
Tolerance
IRMIN
Minimum Operating Current
∆
VR/
∆
T
Reverse Breakdown Voltage
Temperature Coefficient
∆
V
R
(
∆
IK) Reverse Breakdown Voltage
Change with Operating Current
ZKA
eN
∆
VR
*Typical.
Conditions
IK = 100µA
IK = 100µA
IK = 1mA
I
RMIN
≤
I
K
≤
1mA
1mA
≤
I
K
≤
15mA
1mA
≤
I
K
≤
25mA
IK=1mA, f=120Hz,
IAC=0.1IK
IK=100µA,
10Hz
≤
f
≤
10kHz
t=1000hrs, T=25°C,
IK=100µA
Limits
A
B
C
D
2.500 2.500 2.500 2.500
±2.5 ±5.0 ±12
±25
•
±19
±21
±29
±49
•
65
65
65
70
•
±100 ±100 ±100 ±150
•
•
1.2
8.0
10
0.8
35
120
1.2
8.0
10
0.8
35
120
1.2
8.0
10
0.9
35
120
1.5
10.0
12
1.1
35
120
Units
V*
mV
mV
µA
ppm/
°
C
mV
mV
mV*
Ω
*
µVRMS*
ppm*
Reverse Dynamic Impedance
Wideband Noise
Reverse Breakdown Voltage
Long-term Stability
Guaranteed Electrical Characteristics, FAN4040-3.3
(T
A
= 25°C unless otherwise specified, in free air)
The
•
denotes specifications which apply over the full operating temperature range.
Parameter
Reverse Breakdown Voltage
Reverse Breakdown Voltage
Tolerance
IRMIN
Minimum Operating Current
∆
VR/
∆
T
Reverse Breakdown Voltage
Temperature Coefficient
∆
V
R
(
∆
IK) Reverse Breakdown Voltage
Change with Operating Current
ZKA
eN
∆
VR
*Typical.
Symbol
VR
TCVR
Conditions
IK = 100µA
IK = 100µA
IK = 1mA
I
RMIN
≤
I
K
≤
1mA
1mA
≤
I
K
≤
15mA
1mA
≤
I
K
≤
25mA
IK=1mA, f=120Hz,
IAC=0.1IK
IK=100µA,
10Hz
≤
f
≤
10kHz
t=1000hrs, T=25°C,
IK=100µA
Limits
A
B
C
D
3.300 3.300 3.300 3.300
±3.3 ±6.6 ±17
±33
•
±25
±28
±38
±65
•
70
70
70
75
•
±100 ±100 ±100 ±150
•
•
1.2
10
12
1.0
70
120
1.2
10
12
1.0
70
120
1.2
10
12
1.0
70
120
1.5
13
15
1.3
70
120
Units
V*
mV
mV
µA
ppm/
°
C
mV
mV
mV*
Ω
*
µVRMS*
ppm*
Reverse Dynamic Impedance
Wideband Noise
Reverse Breakdown Voltage
Long-term Stability
REV. 1.0.1 9/29/00
3
FAN4040
PRODUCT SPECIFICATION
Mechanical Dimensions
SOT-23 Package
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
A
A1
B
c
D
E
e
e1
H
L
S
Inches
Min.
.035
.0004
.012
.003
.110
Max.
.044
.004
.020
.008
.120
Millimeters
Min.
.89
.01
.30
.08
2.80
Max.
1.12
.10
.50
.20
3.04
.047
.055
.037 BSC
.075 BSC
.083
.104
.021 REF
.016 Nom
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
4
REV. 1.0.1 9/29/00
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