Datasheet

LM4040x25I Electrical Characteristics
DV
Z
DI
Z
LM4040
www.ti.com .................................................................................................................................................. SLOS456K – JANUARY 2005 – REVISED MARCH 2008
at industrial temperature range, full-range T
A
= – 40 ° C to 85 ° C (unless otherwise noted)
LM4040A25I LM4040B25I
PARAMETER TEST CONDITIONS T
A
UNIT
MIN TYP MAX MIN TYP MAX
V
Z
Reverse breakdown voltage I
Z
= 100 μ A 25 ° C 2.5 2.5 V
25 ° C – 2.5 2.5 – 5 5
Reverse breakdown voltage
Δ V
Z
I
Z
= 100 μ A mV
tolerance
Full range – 19 19 – 21 21
25 ° C 45 75 45 75
I
Z,min
Minimum cathode current μ A
Full range 80 80
I
Z
= 10 mA 25 ° C ± 20 ± 20
25 ° C ± 15 ± 15
Average temperature coefficient
α
VZ
I
Z
= 1 mA ppm/ ° C
of reverse breakdown voltage
Full range ± 100 ± 100
I
Z
= 100 μ A 25 ° C ± 15 ± 15
25 ° C 0.3 0.8 0.3 0.8
I
Z,min
< I
Z
< 1 mA
Reverse breakdown voltage
Full range 1 1
change with cathode current mV
25 ° C 2.5 6 2.5 6
change
1 mA < I
Z
< 15 mA
Full range 8 8
I
Z
= 1 mA, f = 120 Hz,
Z
Z
Reverse dynamic impedance 25 ° C 0.3 0.8 0.3 0.8 Ω
I
AC
= 0.1 I
Z
I
Z
= 100 μ A,
e
N
Wideband noise 25 ° C 35 35 μ V
RMS
10 Hz ≤ f ≤ 10 kHz
t = 1000 h,
Long-term stability of reverse
T
A
= 25 ° C ± 0.1 ° C, 120 120 ppm
breakdown voltage
I
Z
= 100 μ A
V
HYST
Thermal hysteresis
(1)
Δ T
A
= – 40 ° C to 125 ° C 0.08 0.08 %
(1) Thermal hysteresis is defined as V
Z,25 ° C
(after cycling to – 40 ° C) – V
Z,25 ° C
(after cycling to 125 ° C).
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