LM4040 Micrel Semiconductor, LM4040 Datasheet - Page 10

• Manufacturer Part Number: LM4040
• Description: Precision Micropower Shunt Voltage Reference
• Manufacturer: Micrel Semiconductor

LM4040/4041
LM4040 and LM4041 Electrical Characteristic Notes
Note 1.
Note 2.
Note 3.
Note 4.
Note 5.
Note 6.
Note 7.
Note 8.
LM4041 Typical Characteristics
LM4040/4041
+0.5
+0.4
+0.3
+0.2
+0.1
-0.1
-0.2
-0.3
-0.4
-0.5
100
Average Temperature Coefficient
80
60
40
20
Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the
device is functional, but do not guarantee specific performance limits. For guaranteed specification and test conditions, see the Electrical
Characteristics. The guaranteed specifications apply only for the test conditions listed. Some performance characteristics may degrade when
the device is not operated under the listed test conditions.
The maximum power dissipation must be derated at elevated temperatures and is dictated by T
(junction to ambient thermal resistance), and T
PD
T
The human body model is a 100pF capacitor discharged through a 1.5k resistor into each pin. The machine model is a 200pF capacitor
discharged directly into each pin.
Typicals are at T
Limits are 100% production tested at 25 C. Limits over temperature are guaranteed through correlation using Statistical Quality Control (SQL)
methods.
The boldface (over temperature limit for Reverse Breakdown Voltage Tolerance is defined as the room temperature Reverse Breakdown
Voltage Tolerance [( V
reference point of 25 C, and V
A-grade: 0.75% = 0.1% 100ppm/ C
B-grade: 0.85% = 0.2% 100ppm/ C
C-grade: 1.15% = 0.5% 100ppm/ C
D-grade: 1.98% = 1.0% 150ppm/ C
Example: The A-grade LM4040-2.5 has an over temperature Reverse Breakdown Voltage tolerance of 2.5
When V
output and the package (–) output pin. See the Output Saturation curve in the Typical Performance Characteristics section.
Reference voltage and temperature coefficient will change with output voltage. See Typical Performance Characteristics curves.
Temperature Drift for Different
0
0
-40
JMAX
Reverse Characteristics and
0
Minimum Operating Current
MAX
-20
REVERSE VOLTAGE (V)
= 125 C, and the typical thermal resistance (
0.4
= (T
OUT
TEMPERATURE ( C)
-22ppm/ C
0
JMAX
0.8
-51ppm/ C
1.6V, the LM4041-ADJ must operate at reduced I
20
J
– T
12ppm/ C
= 25 C and represent most likely parametric norm.
40
1.2
A
LM4041-1.2
Typical
T
LM4041-1.2
)/
I
R
J
60
= 25 C
JA
= 150µA
R
/ T)(65 C)(V
1.6
or the number given in the Absolute Maximum Ratings, whichever is lower. For the LM4040 and LM4041,
80 100
R
2.0
is the reverse breakdown voltage. The total over temperature tolerance for the different grades follows:
R
)].
65 C
65 C
65 C
65 C
V
R
A
/ T is the V
(ambient temperature). The maximum allowable power dissipation at any temperature is
100
100
0.1
80
60
40
20
1k
10
0
1
JA
100
Reverse Characteristics and
0
Minimum Operating Current
I
I
), when board mounted, is 326 C/W for the SOT-23 package.
R
R
= 150µA
= 1mA
REVERSE VOLTAGE (V)
0.4
Output Impedence
R
1k
FREQUENCY (Hz)
vs. Frequency
temperature coefficient, 65 C is the temperature range from –40 C to the
R
T
LM4041-1.2
0.8
10
J
I
. This is caused by the series resistance of the die attach between the die (–)
R
= 25 C
10k
= 0.1I
1.2
R
Typical
T
LM4041-1.2
J
100k
= 25 C
C
TANTALUM
C
L
1.6
= 1µF
L
X
= 0
C
1M
2.0
1Hz rate
JMAX
1000
V
800
600
400
200
(maximum junction temperature),
IN
0
1
LM4041-1.2
Voltage Impedance
LM4041-ADJ: V
10
0.75% = 19mV.
FREQUENCY (Hz)
Test Circuit
R
S
100
30k
1k
LM4041-1.2
OUT
I
R
T J = 25 C
January 2000
= 200µA
10k
= V
REF
V
100k
R
Micrel
JA