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LM399AH#PBF

P1-P3P4-P6P7-P8
LM199/LM399
LM199A/LM399A
1
199399fc
For more information www.linear.com/LM399
Typical applicaTion
FeaTures DescripTion
Precision Reference
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.
10V Buffered Reference Reverse Voltage Change
applicaTions
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
n
Precision Voltage Reference for Multimeters
n
Calibration Equipment Voltage Standards
n
Laboratory Measurement Equipment
n
Industrial Monitor/Control Instruments
n
High Accuracy Data Converters
n
6.95V Shunt Reference
n
Guaranteed 0.5ppm/°C Temperature Coefficient
n
Guaranteed 1Ω Maximum Dynamic Impedance
n
Guaranteed 20µV
RMS
Maximum Noise
n
Guaranteed Initial Tolerance of 2%
n
Wide Operating Current Range
n
Available in 4-Lead TO-46 Metal Can
9k
0.1%
7.5k
5%
3
+
–
1
4 2
6.95V
15V
LM399H
20k
0.1%
2
7
4
6
10V
3
LM199 TA01a
–
+
LT
®
1001
REVERSE CURRENT (mA)
0
REVERSE VOLTAGE CHANGE (mV)
3
4
5
6
10
LM199 TA01b
2
1
0
2 4 8
6
7
8
STABILIZED
(T
J
≈ 90°C)
T
J
= 25°C
LM199/LM399
LM199A/LM399A
2
199399fc
For more information www.linear.com/LM399
pin conFiguraTionabsoluTe MaxiMuM raTings
TOP VIEW
+
1
H PACKAGE
4-LEAD TO-46 METAL CAN
INSIDE THERMAL SHIELD
–
4
2
–
3
+
H
orDer inForMaTion
LEAD FREE FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE
LM399H LM399H#TRPBF LM399H 4-Lead TO-46 Metal Can 0°C to 70°C
LM399AH LM399AH#TRPBF LM399AH 4-Lead TO-46 Metal Can 0°C to 70°C
OBSOLETE PACKAGE
LM199H LM199H#TRPBF 4-Lead TO-46 Metal Can –55°C to 125°C
LM199AH LM199AH#TRPBF 4-Lead TO-46 Metal Can –55°C to 125°C
LM199AH-20 LM199AH-20#TRPBF 4-Lead TO-46 Metal Can –55°C to 125°C
LM399AH-20 LM399AH-20#TRPBF 4-Lead TO-46 Metal Can 0°C to 70°C
LM399AH-50 LM399AH-50#TRPBF 4-Lead TO-46 Metal Can 0°C to 70°C
Consult LTC Marketing for parts specified with wider operating temperature ranges.
Consult LTC Marketing for information on nonstandard lead based finish parts.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to:
http://www.linear.com/tapeandreel/
LM199/LM199A LM399/LM399A
SYMBOL PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS
V
Z
Reverse Breakdown Voltage 0.5mA ≤ I
R
≤ 10mA
l
6.8 6.95 7.1 6.75 6.95 7.3 V
ΔV
Z
Reverse Breakdown Voltage Change
with Current
0.5mA ≤ I
R
≤ 10mA
l
6 9 6 12 mV
r
Z
Reverse Dynamic Impedance I
R
= 1mA (Note 6) (10Hz ≤ f ≤ 100Hz)
l
0.5 1 0.5 1.5 Ω
Δ
V
Z
Δ
Temp
Temperature Coefficient
LM199/LM399
–55°C ≤ T
A
≤ 85°C
85°C ≤ T
A
≤ 125°C
0°C ≤ T
A
≤ 70°C
0.3
5
1
15
0.3
2
ppm/°C
ppm/°C
ppm/°C
LM199A/LM399A –55°C ≤ T
A
≤ 85°C
85°C ≤ T
A
≤ 125°C
0°C ≤ T
A
≤ 70°C
0.2
5
0.5
10
0.3
1
ppm/°C
ppm/°C
ppm/°C
e
n
RMS Noise 10Hz ≤ f ≤ 10kHz
l
7 20 7 50 µV
elecTrical characTerisTics
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
(Note 1)
The
l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. (Note 3)
LM199/LM399
LM199A/LM399A
3
199399fc
For more information www.linear.com/LM399
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: The substrate is electrically connected to the negative terminal
of the temperature stabilizer. The voltage that can be applied to either
terminal of the reference is 40V more positive or 0.1V more negative than
the substrate.
Note 3: These specifications apply for 30V applied to the temperature
stabilizer and –55°C ≤ T
A
≤ 125°C for the LM199; and 0°C ≤ T
A
≤ 70°C for
the LM399.
Note 4: Devices with maximum guaranteed long-term stability of
20ppm/√kH are available. Drift decreases with time.
Note 5: This initial current can be reduced by adding an appropriate
resistor and capacitor to the heater circuit. See the Typical Performance
Characteristics graphs to determine values.
Note 6: Guaranteed by “Reverse Breakdown Change with Current.”
elecTrical characTerisTics
Typical perForMance characTerisTics
LM199/LM199A LM399/LM399A
SYMBOL PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS
Δ
V
Z
Δ
Time
Long-Term Stability Stabilized, 22°C ≤ T
A
≤ 28°C,
1000 Hours, I
R
= 1mA ±0.1%
8 (Note 4) 8 (Note 4) ppm/√kH
I
H
Temperature Stabilizer Supply
Current
T
A
= 25°C, Still Air, V
H
= 30V
T
A
= –55°C (Note 5)
8.5
22
14
28
8.5 15 mA
V
H
Temperature Stabilizer Supply
Voltage
l
9 40 9 40 V
Warm-Up Time to ±0.05% V
Z
V
H
= 30V 3 3 Seconds
Initial Turn-On Current 9V ≤ V
H
≤ 40V (Note 5) 140 200 140 200 mA
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. (Note 3)
Reverse Characteristics Dynamic Impedance Stabilization Time
REVERSE VOLTAGE (V)
6.25
0.01
REVERSE CURRENT (mA)
0.1
1
10
100
6.45 6.65
LM199 G01
6.85 7.05
T
J
= 25°C
STABILIZED
(T
J
≈ 90°C)
FREQUENCY (Hz)
10
0.1
DYNAMIC IMPEDANCE (Ω)
10
100
100 1k 10k 100k
LM199 G02
1
T
J
= 25°C
STABILIZED
(T
J
≈ 90°C)
HEATER ON TIME (SECONDS)
0
OUTPUT (mV)
–1
0
1
16
LM199 G03
–2
–3
–4
4
8
12
20
T
A
= 25°C
V
H
= 15V
T
A
= –55°C
P1-P3P4-P6P7-P8

LM399AH#PBF

Mfr. #:
Buy LM399AH#PBF
Manufacturer:
Analog Devices Inc.
Description:
Voltage References Prec Ref
Lifecycle:
New from this manufacturer.
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