LM4040
PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE
www.ti.com
SLOS456J–JANUARY 2005–REVISED SEPTEMBER 2006
LM4040x20I Electrical Characteristics
at industrial temperature range, full-range TA = –40°C to 85°C (unless otherwise noted)
LM4040C20I
LM4040D20I
PARAMETER
TEST CONDITIONS
IZ = 100 µA
TA
UNIT
V
MIN
TYP
MAX
MIN
TYP
MAX
VZ
Reverse breakdown voltage
25°C
25°C
2.048
2.048
–10
–23
10
23
75
80
–20
–40
20
40
75
80
Reverse breakdown voltage
tolerance
∆VZ
IZ = 100 µA
mV
Full range
25°C
45
45
IZ,min
Minimum cathode current
µA
Full range
25°C
IZ = 10 mA
±20
±15
±20
±15
25°C
Average temperature coefficient
of reverse breakdown voltage
αVZ
IZ = 1 mA
ppm/°C
Full range
25°C
±100
±150
IZ = 100 µA
IZ,min < IZ < 1 mA
±15
±15
25°C
0.3
0.8
1
0.3
1
1.2
8
Reverse breakdown voltage
change with cathode current
change
DVZ
DIZ
Full range
25°C
mV
2.5
6
2.5
1 mA < IZ < 15 mA
Full range
8
10
IZ = 1 mA, f = 120 Hz,
IAC = 0.1 IZ
ZZ
eN
Reverse dynamic impedance
Wideband noise
25°C
25°C
0.3
35
0.9
0.3
35
1.1
Ω
IZ = 100 µA,
10 Hz ≤ f ≤ 10 kHz
µVRMS
t = 1000 h,
TA = 25°C ± 0.1°C,
IZ = 100 µA
Long-term stability of reverse
breakdown voltage
120
120
ppm
%
VHYST Thermal hysteresis(1)
∆TA = –40°C to 125°C
0.08
0.08
(1) Thermal hysteresis is defined as VZ,25°C (after cycling to –40°C) – VZ,25°C (after cycling to 125°C).
9
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