LM4040
PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE
www.ti.com
SLOS456I–JANUARY 2005–REVISED DECEMBER 2005
LM4040x50I Electrical Characteristics
at industrial temperature range, full-range TA = –40°C to 85°C (unless otherwise noted)
LM4040A50I
LM4040B50I
PARAMETER
TEST CONDITIONS
IZ = 100 µA
TA
UNIT
V
MIN
TYP
MAX
MIN
TYP
MAX
VZ
Reverse breakdown voltage
25°C
25°C
5
5
–5
5
38
89
95
–10
–43
10
43
89
95
Reverse breakdown voltage
tolerance
∆VZ
IZ = 100 µA
mV
Full range
25°C
–38
65
65
IZ,min
Minimum cathode current
µA
Full range
25°C
IZ = 10 mA
±30
±20
±30
±20
25°C
Average temperature coefficient
of reverse breakdown voltage
αVZ
IZ = 1 mA
ppm/°C
Full range
25°C
±100
±100
IZ = 100 µA
IZ,min < IZ < 1 mA
±20
±20
25°C
0.5
1
1.4
8
0.5
1
1.4
8
Reverse breakdown voltage
change with cathode current
change
DVZ
DIZ
Full range
25°C
mV
3.5
3.5
1 mA < IZ < 15 mA
Full range
12
12
IZ = 1 mA, f = 120 Hz,
IAC = 0.1 IZ
ZZ
eN
Reverse dynamic impedance
Wideband noise
25°C
25°C
0.5
80
1.1
0.5
80
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).
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