2024年3月23日发(作者：蓟山槐)
查询LM338P供应商
LM199/LM399
LM199A/LM399A
Precision Reference
FEATURES
6.95V Shunt Reference
■
Guaranteed 0.5ppm/°C Temperature Coeffi cient
■
Guaranteed 1Ω Maximum Dynamic Impedance
■
Guaranteed 20µV
RMS
Maximum Noise
■
Guaranteed Initial Tolerance of 2%
■
Wide Operating Current Range
■
Available in 4-Lead TO-46 Metal Can
■
DESCRIPTIO
U
APPLICATIO S
■
■
■
■
■
The LM199/LM399 precision shunt reference features
excellent temperature stability over a wide range of volt-
age, temperature and operating current conditions. A
stabilizing heater is incorporated with the active Zener on
a monolithic substrate which nearly eliminates changes in
voltage with temperature. The subsurface Zener operates
over a current range of 0.5mA to 10mA, and offers minimal
noise and excellent long-term stability.
Ideal applications for the LM199/LM399 include digital volt-
meters, precision calibration equipment, current sources
and a variety of other precision low cost references. A 10V
buffered reference application is shown below.
, LTC and LT are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
Precision Voltage Reference for Multimeters
Calibration Equipment Voltage Standards
Laboratory Measurement Equipment
Industrial Monitor/Control Instruments
High Accuracy Data Converters
TYPICAL APPLICATIO
15V
10V Buffered Reference
9k
0.1%
2
8
R
E
V
E
R
S
E
V
O
L
T
A
G
E
C
H
A
N
G
E
(
m
V
)
7
6
5
4
3
2
1
0
0
Reverse Voltage Change
7.5k
5%
+
3
LM399H
6.95V
1
–
®
7
6
10V
3
20k
0.1%
+
LT1001
4
–
42
LM199 TA01a
2
U
STABILIZED
(T
J
≈ 90°C)
T
J
= 25°C
8
6
REVERSE CURRENT (mA)
4
10
LM199 TA01b
U
LM199399fb
1
LM199/LM399
LM199A/LM399A
ABSOLUTE AXIU RATIGS
(Note 1)
WU
PACKAGE/ORDER IFORATIO
TOP VIEW
U
Temperature Stabilizer ..............................................40V
Reverse Breakdown Current ...................................20mA
Forward Current .......................................................1mA
Reference to Substrate Voltage, V
RS
(Note 2) ........–0.1V
Operating Temperature Range
LM199/LM199A (OBSOLETE) ............–55°C to 125°C
LM399/LM399A .......................................0°C to 70°C
Storage Temperature Range
LM199/LM199A (OBSOLETE) ............–65°C to 150°C
LM399/LM399A .................................–65°C to 150°C
Lead Temperature (Soldering, 10 sec) ..................300°C
ELECTRICAL CHARACTERISTICS
SYMBOLPARAMETER
V
Z
ΔV
Z
r
Z
ΔV
Z
ΔTemp
Reverse Breakdown Voltage
Reverse Breakdown Voltage Change
with Current
Reverse Dynamic Impedance
Temperature Coeffi cient
LM199/LM399
CONDITIONS
●
denotes the specifi cations which apply over the full operating The
temperature range, otherwise specifi cations are at T
A
= 25°C. (Note 3)
0.5mA ≤ I
R
≤ 10mA
0.5mA ≤ I
R
≤ 10mA
I
R
= 1mA (Note 6) (10Hz ≤ f ≤ 100Hz)
●
–55°C ≤ T
A
≤ 85°C
85°C ≤ T
A
≤ 125°C
0°C ≤ T
A
≤ 70°C
–55°C ≤ T
A
≤ 85°C
85°C ≤ T
A
≤ 125°C
0°C ≤ T
A
≤ 70°C
10Hz ≤ f ≤ 10kHz
Stabilized, 22°C ≤ T
A
≤ 28°C,
1000 Hours, I
R
= 1mA ±0.1%
●
LM199A/LM399A
e
n
ΔV
Z
ΔTime
I
H
V
H
RMS Noise
Long-Term Stability
Temperature Stabilizer Supply CurrentT
A
= 25°C, Still Air, V
H
= 30V
T
A
= –55°C (Note 5)
Temperature Stabilizer Supply Voltage
Warm-Up Time to ±0.05% V
Z
Initial Turn-On Current
V
H
= 30V
9V ≤ V
H
≤ 40V (Note 5)
●
2
U
W
W
W
+
1
H
4
–
+
–
23
H PACKAGE
4-LEAD TO-46 METAL CAN
INSIDE THERMAL SHIELD
ORDER PART NUMBER
LM399H
LM399AH
LM199H
LM199AH
LM199AH-20
LM399AH-20
LM399AH-50
OBSOLETE
Order Options Tape and Reel: Add #TR
Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF
Lead Free Part Marking: /leadfree/
Consult LTC Marketing for parts specifi ed with wider operating temperature ranges.
LM199/LM199A
MINTYPMAX
●
●
LM399/LM399A
MINTYPMAX
6.756.95
6
0.5
7.3
12
1.5
UNITS
V
mV
Ω
ppm/°C
ppm/°C
ppm/°C
ppm/°C
ppm/°C
ppm/°C
µV
6.86.95
6
0.5
0.3
5
0.2
5
7
8
8.5
22
7.1
9
1
1
15
0.3
0.5
10
0.3
20
(Note 4)
14
28
40
3
140200
9
3
140
7
8
8.5
2
1
50
(Note 4)ppm/√kH
15
40
200
mA
V
Seconds
mA
LM199399fb
9
2024年3月23日发(作者：蓟山槐)
查询LM338P供应商
LM199/LM399
LM199A/LM399A
Precision Reference
FEATURES
6.95V Shunt Reference
■
Guaranteed 0.5ppm/°C Temperature Coeffi cient
■
Guaranteed 1Ω Maximum Dynamic Impedance
■
Guaranteed 20µV
RMS
Maximum Noise
■
Guaranteed Initial Tolerance of 2%
■
Wide Operating Current Range
■
Available in 4-Lead TO-46 Metal Can
■
DESCRIPTIO
U
APPLICATIO S
■
■
■
■
■
The LM199/LM399 precision shunt reference features
excellent temperature stability over a wide range of volt-
age, temperature and operating current conditions. A
stabilizing heater is incorporated with the active Zener on
a monolithic substrate which nearly eliminates changes in
voltage with temperature. The subsurface Zener operates
over a current range of 0.5mA to 10mA, and offers minimal
noise and excellent long-term stability.
Ideal applications for the LM199/LM399 include digital volt-
meters, precision calibration equipment, current sources
and a variety of other precision low cost references. A 10V
buffered reference application is shown below.
, LTC and LT are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
Precision Voltage Reference for Multimeters
Calibration Equipment Voltage Standards
Laboratory Measurement Equipment
Industrial Monitor/Control Instruments
High Accuracy Data Converters
TYPICAL APPLICATIO
15V
10V Buffered Reference
9k
0.1%
2
8
R
E
V
E
R
S
E
V
O
L
T
A
G
E
C
H
A
N
G
E
(
m
V
)
7
6
5
4
3
2
1
0
0
Reverse Voltage Change
7.5k
5%
+
3
LM399H
6.95V
1
–
®
7
6
10V
3
20k
0.1%
+
LT1001
4
–
42
LM199 TA01a
2
U
STABILIZED
(T
J
≈ 90°C)
T
J
= 25°C
8
6
REVERSE CURRENT (mA)
4
10
LM199 TA01b
U
LM199399fb
1
LM199/LM399
LM199A/LM399A
ABSOLUTE AXIU RATIGS
(Note 1)
WU
PACKAGE/ORDER IFORATIO
TOP VIEW
U
Temperature Stabilizer ..............................................40V
Reverse Breakdown Current ...................................20mA
Forward Current .......................................................1mA
Reference to Substrate Voltage, V
RS
(Note 2) ........–0.1V
Operating Temperature Range
LM199/LM199A (OBSOLETE) ............–55°C to 125°C
LM399/LM399A .......................................0°C to 70°C
Storage Temperature Range
LM199/LM199A (OBSOLETE) ............–65°C to 150°C
LM399/LM399A .................................–65°C to 150°C
Lead Temperature (Soldering, 10 sec) ..................300°C
ELECTRICAL CHARACTERISTICS
SYMBOLPARAMETER
V
Z
ΔV
Z
r
Z
ΔV
Z
ΔTemp
Reverse Breakdown Voltage
Reverse Breakdown Voltage Change
with Current
Reverse Dynamic Impedance
Temperature Coeffi cient
LM199/LM399
CONDITIONS
●
denotes the specifi cations which apply over the full operating The
temperature range, otherwise specifi cations are at T
A
= 25°C. (Note 3)
0.5mA ≤ I
R
≤ 10mA
0.5mA ≤ I
R
≤ 10mA
I
R
= 1mA (Note 6) (10Hz ≤ f ≤ 100Hz)
●
–55°C ≤ T
A
≤ 85°C
85°C ≤ T
A
≤ 125°C
0°C ≤ T
A
≤ 70°C
–55°C ≤ T
A
≤ 85°C
85°C ≤ T
A
≤ 125°C
0°C ≤ T
A
≤ 70°C
10Hz ≤ f ≤ 10kHz
Stabilized, 22°C ≤ T
A
≤ 28°C,
1000 Hours, I
R
= 1mA ±0.1%
●
LM199A/LM399A
e
n
ΔV
Z
ΔTime
I
H
V
H
RMS Noise
Long-Term Stability
Temperature Stabilizer Supply CurrentT
A
= 25°C, Still Air, V
H
= 30V
T
A
= –55°C (Note 5)
Temperature Stabilizer Supply Voltage
Warm-Up Time to ±0.05% V
Z
Initial Turn-On Current
V
H
= 30V
9V ≤ V
H
≤ 40V (Note 5)
●
2
U
W
W
W
+
1
H
4
–
+
–
23
H PACKAGE
4-LEAD TO-46 METAL CAN
INSIDE THERMAL SHIELD
ORDER PART NUMBER
LM399H
LM399AH
LM199H
LM199AH
LM199AH-20
LM399AH-20
LM399AH-50
OBSOLETE
Order Options Tape and Reel: Add #TR
Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF
Lead Free Part Marking: /leadfree/
Consult LTC Marketing for parts specifi ed with wider operating temperature ranges.
LM199/LM199A
MINTYPMAX
●
●
LM399/LM399A
MINTYPMAX
6.756.95
6
0.5
7.3
12
1.5
UNITS
V
mV
Ω
ppm/°C
ppm/°C
ppm/°C
ppm/°C
ppm/°C
ppm/°C
µV
6.86.95
6
0.5
0.3
5
0.2
5
7
8
8.5
22
7.1
9
1
1
15
0.3
0.5
10
0.3
20
(Note 4)
14
28
40
3
140200
9
3
140
7
8
8.5
2
1
50
(Note 4)ppm/√kH
15
40
200
mA
V
Seconds
mA
LM199399fb
9