NSC LM1403A Precision 2.50v reference Datasheet

LM1403/LM1403A
Precision 2.50V Reference
General Description
Features
The LM1403 is a precision, monolithic, temperature-compensated voltage reference. The LM1403 makes use of
thin-film technology enhanced by the discrete laser trimming of resistors to achieve excellent Temperature coefficient (Tempco) of VOUT (as low as 11 ppm/§ C), along with
tight initial tolerance, (as low as 0.02%). The trim scheme is
such that individual resistors are cut open rather than being
trimmed (partially cut), to avoid resistor drift caused by electromigration in the trimmed area. The LM1403 also provides
excellent stability vs. changes in input voltage and output
current. The output is current-limited and is short circuit
proof.
Y
Y
Y
Y
Y
Y
Y
Y
Y
Low cost
Low 400 mA operating current
Low output impedance (0.15X)
Excellent line regulation (0.0001%/V typical)
Single-supply operation
Low temperature coefficient
Excellent initial accuracy (0.05% typical)
Excellent for low-voltage operation
(VS e 5V, VREF e 2.500V)
For tighter specs, refer to LM368-2.5
Connection Diagram
Dual-In-Line Package
TL/H/9757 – 1
Top View
Order Number LM1403N or LM1403AN
See NS Package Number N08E
Typical Applications
Low Voltage Reference
TL/H/9757 – 2
C1995 National Semiconductor Corporation
TL/H/9757
RRD-B30M115/Printed in U. S. A.
LM1403/LM1403A Precision 2.50V Reference
June 1988
Absolute Maximum Ratings (Note 7)
Storage Temperature Range
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales
Office/Distributors for availability and specifications.
Input Voltage
Power Dissipation
Output Short-Circuit Duration
b 60§ C to a 150§ C
Operating Temperature Range
0§ C to a 70§ C
Lead Temperature (Soldering, 10 sec.)
ESD rating to be determined.
40V
600 mW
Continuous
260§ C
Electrical Characteristics (Note 1)
LM1403, LM1403A
Parameter
Conditions
Typical
VOUT
Tested
Limit
(Note 2)
Design
Limit
(Note 3)
a 2.500
VOUT Error: LM1403
LM1403A
Units
(Max. Unless
Noted)
V
g 0.4
%
%
Line Regulation
4.5V s VIN s 40V
0.2
3
mV
Load Regulation (Note 8)
0 mA s ISOURCE s 10 mA
1.5
10
mV
Thermal Regulation
T e 20 ms (Note 4)
g 0.005
g 0.02
%/100 mW
Quiescent Current
IL e 0 mA
0.350
1.50
Change of Quiescent Current vs. VIN
5.0V s VIN s 30V
3
Temperature Coefficient
of VOUT (see graph): LM1403A
(Note 5)
LM1403
0§ C s TA s 70§ C
0§ C s TA s 70§ C
g 11
Short Circuit Current
VOUT e 0
Noise:
g 0.05
g 1.0
g 0.04
g 25
g 15
30
0.1 Hz – 10 Hz
100 Hz –10 kHz
mA
mA/V
g 40
70
100
12
420
ppm/§ C
ppm/§ C
mA
mVp-p
nV/0Hz
Note 1: Unless otherwise noted, these specifications apply: TA e 25§ C, 4.9V s VIN s 15.5V, 0 s ILOAD s 0.5 mA, 0 s CL s 200 pF.
Note 2: Tested Limits are guaranteed and 100% tested in production.
Note 3: Design Limits are guaranteed (but not 100% production tested) over the indicated temperature and supply voltage ranges. These limits are used to
calculate outgoing quality levels.
Note 4: Thermal Regulation is defined as the change in the output Voltage at a time T after a step change in power dissipation of 100 mW.
Note 5: Temperature Coefficient of VOUT is defined as the worst case delta-VOUT measured at Specified Temperatures divided by the total span of the Specified
Temperature Range (See graphs). There is no guarantee that the Specified Temperatures are exactly at the minimum or maximum deviation.
Note 6: Thermal Resistance is 160§ C/W, junction to ambient, soldered into a PC board.
Note 7: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. DC and AC electrical specifications do not apply when operating
the device beyond its Rated Operating Conditions (see Note 1 and Conditions).
Note 8: Load regulation is measured on the output pin at a point (/8× below the base of the package. Regulation is measured at constant junction temperature,
using pulse testing with a low duty cycle. Changes in output voltage due to heating effects are covered under the specification for thermal regulation.
2
Typical Performance Characteristics (Note 1)
Quiescent Current vs Input
Voltage and Temperature
Dropout Voltage vs
Output Current
Output Impedance vs
Frequency
Ripple Rejection vs
Frequency
Output Change vs
Output Current
(1) LM1403 as is.
(2) With 10X in series with 10 mF,
VOUT to GND.
Output Noise vs.
Frequency
Temperature Coefficient
TL/H/9757 – 3
Typical Temperature Coefficient Calculations:
T.C. e 1.7 mV/(70§ c 2.5V)
e 9.7 ppm/§ C
3
Typical Applications
g 2.5V, g 1.25V References
Improved Noise Performance
TL/H/9757 – 4
TL/H/9757 – 5
Re
Thin Film Resistor Network,
g 0.05% Matching and 5 ppm Tracking
(Beckman 694-3-R-10K-A),
(Caddock T-914-10K-100-05)
or similar.
Multiple Output Voltages
R e Thin Film Resistor Network
0.05% Matching and 5 ppm Tracking
(Beckman 694-3-R-10K-A),
(Caddock T-914-10K-100-05)
or similar.
TL/H/9757–6
TL/H/9757 – 7
Reference with Booster
100 mA Boosted Reference
TL/H/9757 – 8
TL/H/9757 – 9
4
Typical Applications (Continued)
Buffered High-Current Reference with Filter
TL/H/9757 – 10
Simplified Schematic Diagram
TL/H/9757 – 11
*Reg. U.S. Pat. Off.
5
LM1403/LM1403A Precision 2.50V Reference
Physical Dimensions inches (millimeters)
Lit. Ý106560
Plastic Dual-In-Line Package (N)
Order Number LM1403N or LM1403AN
NS Package Number N08E
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