Datasheet

 2017-2018 Microchip Technology Inc. DS20005757B-page 7
LM4040/LM4041
Reverse-Breakdown Voltage
Change with Operating
Current Change
V
R
/I
R
—0.51.2mVI
RMIN
 I
R
 1mA,
T
A
= +25°C
——1.5 I
RMIN
 I
R
 1mA
—3.09.0 1mA  I
R
 15 mA,
T
A
= +25°C
— — 13.0 1 mA  I
R
 15 mA
Reverse Dynamic Impedance Z
R
—0.51.3 I
R
= 1 mA, f = 120 Hz,
I
AC
= 0.1 I
R
, T
A
= +25°C
Wideband Noise e
N
—80—µV
RMS
I
R
= 100 µA, T
A
= +25°C
10 Hz  f  10 kHz
Reverse-Breakdown Voltage
Long-Term Stability
V
R
— 120 — ppm t = 1000 hrs., T
A
= +25°C
±0.1°C, I
R
= 100 µA
LM4040-4.1 ELECTRICAL CHARACTERISTICS (Note 1) (CONTINUED)
T
A
= Operating Temperature Range, T
A
= T
J
= –40°C to +85°C, unless noted.
Parameters Sym. Min. Typ. Max. Units Conditions
Note 1: Specification for packaged product only.
2: The boldface (overtemperature) limit for Reverse-Breakdown Voltage Tolerance is defined as the room
temperature Reverse-Breakdown Voltage Tolerance ±[(V
R
/T)(65°C)(V
R
)]. V
R
/T is the V
R
tempera-
ture coefficient, 65°C is the temperature range from –40°C to the reference point of 25°C, and V
R
is the
reverse-breakdown voltage. The total overtemperature tolerance for the different grades follows:
a. C-grade: ±1.15% = ±0.5% ±100 ppm/°C × 65°C
b. D-grade: ±1.98% = ±1.0% ±150 ppm/°C × 65°C
Example: The C-grade LM4040-2.5 has an overtemperature Reverse-Breakdown Voltage tolerance of
±2.5 × 1.15% = ±29 mV.