www.fairchildsemi.com
FAN4050
Precision Micropower Shunt Voltage Reference
Features
•
•
•
•
•
•
Fixed 2.500V, 4.096V, 5.000V, 8.192V, 10.000V
Tolerances to +0.1% (25°C)
Low output noise
Low temperature coefficient
Small packages: SSOT-23
Extended operating current range
Description
The FAN4050 series of precision shunt references are ideal
for space- and cost-sensitive applications. They are available
in a variety of fixed output voltages (2.500V, 4.096V, 5.000V,
8.192V, and 10.000V) and with a variety of output voltage
tolerances (0.1%, 0.2%, and 0.5%). They also have excellent
temperature coefficients, 50ppm/°C.
The FAN4050 series is available in the SSOT-23 package.
Applications
•
•
•
•
•
Portable equipment
Disk drives
Instrumentation
Audio equipment
Data acquisition systems
Advance Specification
Connection Diagram
SSOT-23
+
1
3*
–
2
*This pin must be left floating
or connected to pin 2.
Top View
Rev. 0.6.0
ADVANCE SPECIFICATION
describes products that are in the design stage. Specifications may change in any manner whatever without notice.
Contact Fairchild Semiconductor for current information.
FAN4050
Absolute Maximum Ratings
1
Ratings are over full operating free-air temperature range unless otherwise noted.
Parameter
Continuous cathode current, IK
Power dissipation
2
Storage Temperature Range
Lead Temperature (Soldering, 10 sec.)
-65
Min.
-10
Max.
20
280
150
300
Unit
mA
mW
°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.
2. It is recommended to connect pin 3 to pin 2 in the SSOT23 package to ensure optimal thermal performance.
Recommended Operating Conditions
Parameter
Continuous cathode current, IK
Operating temperature range in free air, TA
Min.
0.1
-40
Max.
15
85
Unit
mA
°C
Advance Specification
Equivalent Schematic
CATHODE
+
_
V
ref
= 1.24V
ANODE
2
FAN4050
Guaranteed Electrical Characteristics, FAN4050-2.5
(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
I
RMIN
Minimum Operating Current
Reverse Breakdown Voltage
∆V
R
/∆T
Temperature Coefficient
∆V
R
(∆IK) Reverse Breakdown Voltage
Change with Operating
Current
Z
KA
Reverse Dynamic
Impedance
e
N
Wideband Noise
∆V
R
*Typical.
Symbol
V
R
TCV
R
Conditions
I
K
= 100µA
I
K
= 100µA
I
K
= 100µA
I
RMIN
≤
I
K
≤1mA
1mA
≤
I
K
≤
15mA
I
K
=1mA, f=120Hz, I
AC
=0.1I
K
•
•
•
•
•
A
2.500
±2.5
±11
65
±50
1.2
8.0
0.3
41
120
Limits
B
2.500
±5.0
±14
65
±50
1.2
8.0
0.3
41
120
Units
C
2.500
±13
±21
65
±50
1.2
8.0
0.3
41
120
V*
mV
mV
µA
ppm/°C
mV
mV
Ω*
µV
RMS
*
ppm*
Advance Specification
I
K
=100µA,
10Hz
≤
f
≤
10kHz
Reverse Breakdown Voltage t=1000hrs, T=25°C, I
K
=100µA
Long-term Stability
Guaranteed Electrical Characteristics, FAN4050-4.1
(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
Minimum Operating Current
I
RMIN
∆V
R
/∆T
Reverse Breakdown Voltage
Temperature Coefficient
∆V
R
(∆IK) Reverse Breakdown Voltage
Change with Operating Current
Z
KA
Reverse Dynamic Impedance
e
N
Wideband Noise
∆V
R
Reverse Breakdown Voltage
Long-term Stability
*Typical.
Symbol
V
R
TCV
R
Conditions
I
K
= 100µA
I
K
= 100µA
I
K
= 100µA
•
•
•
Limits
Units
A
B
C
4.096 4.096 4.096
V*
±4.1
±8.2
±21
mV
±18
±22
±34
mV
73
73
73
µA
±50
±50
±50 ppm/°C
1.2
10
0.5
93
120
1.2
10
0.5
93
120
1.2
10
0.5
93
120
mV
mV
Ω*
µV
RMS
*
ppm*
•
I
RMIN
≤
I
K
≤1mA
1mA
≤
I
K
≤
15mA
•
I
K
=1mA, f=120Hz, I
AC
=0.1I
K
I
K
=100µA, 10Hz
≤
f
≤
10kHz
t=1000hrs, T=25°C, I
K
=100µA
3
FAN4050
Guaranteed Electrical Characteristics, FAN4050-5.0
(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
Reverse Breakdown Voltage
∆V
R
/∆T
Temperature Coefficient
∆V
R
(∆I
K
) Reverse Breakdown Voltage
Change with Operating Current
Reverse Dynamic Impedance
Z
KA
e
N
Wideband Noise
∆V
R
*Typical.
Symbol
V
R
TCV
R
Conditions
I
K
= 100µA
I
K
= 100µA
I
K
= 100µA
I
RMIN
≤
I
K
≤1mA
1mA
≤
I
K
≤
15mA
I
K
=1mA, f=120Hz, IAC=0.1I
K
I
K
=100µA,
10Hz
≤
f
≤
10kHz
t=1000hrs, T=25°C, I
K
=100µA
A
5.000
±5.0
•
±22
•
80
•
±50
•
•
1.4
12
0.5
93
120
Limits
B
5.000
±10
±27
80
±50
1.4
12
0.5
93
120
Units
C
5.000
±25
±42
80
±50
1.4
12
0.5
93
120
V*
mV
mV
µA
ppm/°C
mV
mV
Ω*
µV
RMS
*
ppm*
Advance Specification
Reverse Breakdown Voltage
Long-term Stability
Guaranteed Electrical Characteristics, FAN4050-8.2
(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
I
RMIN
Minimum Operating Current
∆V
R
/∆T
Reverse Breakdown Voltage
Temperature Coefficient
∆V
R
(∆IK) Reverse Breakdown Voltage
Change with Operating Current
Z
KA
Reverse Dynamic Impedance
e
N
Wideband Noise
∆V
R
*Typical.
Symbol
V
R
TCV
R
Conditions
I
K
= 150µA
I
K
= 150µA
I
K
= 150µA
I
RMIN
≤
I
K
≤1mA
1mA
≤
I
K
≤
15mA
I
K
=1mA, f=120Hz, I
AC
=0.1I
K
I
K
=150µA,
10Hz
≤
f
≤
10kHz
t=1000hrs, T=25°C, I
K
=150µA
A
8.192
±8.2
•
±35
•
95
•
±50
•
•
2.5
18
0.6
150
120
Limits
B
8.192
±16
±43
95
±50
2.5
18
0.6
150
120
Units
C
8.192
±41
±68
95
±50
2.5
18
0.6
150
120
V*
mV
mV
µA
ppm/°C
mV
mV
Ω*
µVRMS*
ppm*
Reverse Breakdown Voltage
Long-term Stability
4
FAN4050
Guaranteed Electrical Characteristics, FAN4050-10
(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
Minimum Operating Current
I
RMIN
Reverse Breakdown Voltage
∆V
R
/∆T
Temperature Coefficient
∆V
R
(∆IK) Reverse Breakdown Voltage
Change with Operating Current
Z
KA
Reverse Dynamic Impedance
Wideband Noise
e
N
∆V
R
*Typical.
Symbol
V
R
TCV
R
Conditions
I
K
= 150µA
I
K
= 150µA
I
K
= 150µA
I
RMIN
≤
I
K
≤1mA
1mA
≤
I
K
≤
15mA
I
K
=1mA, f=120Hz, I
AC
=0.1I
K
I
K
=150µA,
10Hz
≤
f
≤
10kHz
t=1000hrs, T=25°C, I
K
=150µA
Limits
A
B
10.00 10.00
±10 ±20
•
±43 ±53
•
103 103
•
±50 ±50
•
•
3.5
23
0.7
150
120
3.5
23
0.7
150
120
Units
C
10.00
V*
±50
mV
±83
mV
103
µA
±50 ppm/°C
3.5
mV
23
mV
0.7
Ω*
150 µV
RMS
*
120
ppm*
Advance Specification
Reverse Breakdown Voltage
Long-term Stability
5
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