PRECISION SHUNT VOLTAGE
REFERENCE
SC4040
PRELIMINARY - April 13, 1998
ELECTRICAL CHARACTERISTICS
TA = 25°C unless otherwise specified.
SC4040E (2.0%)
Parameter
Symbol
Condition
TA = 25°C
MIN
2.450
2.426
TYP
MAX UNITS
Reverse Breakdown Voltage
VZ
IZ = 100µA
2.500 2.550
2.500 2.574
V
V
TA = -40 to +85°C
Minimum Operating Current
IZ(min)
60
80
µA
Reverse Breakdown Voltage Temperature Coefficient
IZ = 10mA
IZ = 1mA
IZ = 100µA
∆VZ
∆T
TA = -40 to +85°C
TA = 25°C
±150 ppm/°C
∆VZ
∆IZ
Ratio of Change in VZ to Change in IZ
IZ(min) < IZ < 1mA
1.0
mV
TA = -40 to +85°C
1.2
8.0
mV
mV
mV
1mA < IZ < 12mA TA = 25°C
TA = -40 to +85°C
10.0
1.1
Reverse Dynamic Impedance
Wideband Noise (RMS)
ZR
eN
IZ = 1mA, f = 120 Hz, IAC = 0.1 IZ
0.25
35
Ω
IZ = 100µA
µV
10Hz < f < 10kHz
Long Term Stability of Reverse Breakdown Voltage
t = 1000 hours
T = 25°C ± 0.1°C
IZ = 100µA
∆VZ
120
ppm
4
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