LM399AH Linear Technology, LM399AH Datasheet - Page 3

• Manufacturer Part Number: LM399AH
• Description: IC REF PRECISION TO46-4
• Manufacturer: Linear Technology

Specifications of LM399AH

• Reference Type: Shunt
• Voltage - Output: 6.95V
• Tolerance: ±5%
• Temperature Coefficient: 1ppm/°C
• Number Of Channels: 1
• Current - Cathode: 500µA
• Current - Output: 10mA
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Through Hole
• Package / Case: TO-46-4
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Voltage - Input: -
• Current - Quiescent: -

Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
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 specifi cations apply for 30V applied to the temperature
stabilizer and –55°C ≤ T
the LM399.
TYPICAL PERFOR A CE CHARACTERISTICS
ELECTRICAL CHARACTERISTICS
0.01
100
200
150
100
0.1
250
10
50
1
0
6.25
–55
Reverse Characteristics
Initial Heater Current
V
H
–35
= 40V
TURN ON TEMPERATURE (°C)
–15
6.45
REVERSE VOLTAGE (V)
T
J
5
= 25°C
25
A
6.65
≤ 125°C for the LM199; and 0°C ≤ T
STABILIZED
45
(T
J
≈ 90°C)
65
6.85
W
85 105
LM199 G04
LM199 G01
7.05
U
125
100
0.1
10
80
60
40
20
1
0
–55
10
Dynamic Impedance
Heater Current
A
≤ 70°C for
V
V
–35
H
H
= 40V
= 20V
100
–15
TEMPERATURE (°C)
FREQUENCY (Hz)
STABILIZED
(T
5
V
J
H
≈ 90°C)
= 10V
1k
25
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.”
V
H
45
= 30V
10k
65
T
J
= 25°C
LM199 G02
LM199 G05
85
100k
105
LM199A/LM399A
160
140
120
100
–2
–3
–4
80
60
40
20
–1
1
0
0
Stabilization Time
0
Heater Current
T
V
LM199/LM399
A
H
= 25°C
0
= 15V
T
A
V
= 25°C
H
4
HEATER ON TIME (SECONDS)
2
= 40V
V
4
H
TIME (SECONDS)
= 20V
T
8
6
A
= –55°C
8
V
H
= 10V
10
12
V
H
12 14
= 30V
LM199399fb
16
LM199 G03
LM199 G06
16
3
20
18