PRECISION SHUNT VOLTAGE
REFERENCE
SC1004(A)
May 1, 2000
ELECTRICAL CHARACTERISTICS
TA = 25°C unless otherwise specified.
-1.2
-2.5
Parameter
Symbol
Condition
MIN TYP MAX MIN TYP MAX UNITS
Reverse Breakdown Voltage,
SC1004
Reverse Breakdown Voltage,
SC1004A
Average Temperature Coefficient
VZ IZ = 100µA
TA = 25°C
1.225 1.235 1.245 2.480 2.500 2.520 V
TA = 0 to +70°C 1.220 1.235 1.250 2.470 2.500 2.530
TA = -40 to +85°C 1.215 1.235 1.255 2.460 2.500 2.535
VZ IZ = 100µA
TA = 25°C
1.231 1.235 1.239 N/A N/A N/A
V
TA = 0 to +70°C 1.225 1.235 1.245 N/A N/A N/A
TA = -40 to +85°C 1.220 1.235 1.245 N/A N/A N/A
∆VZ IZ(min) ≤ IZ ≤ 20mA
∆T
20
20
ppm/°C
Minimum Operating Current
Ratio of Change in VZ to Change in IZ
Reverse Dynamic Impedance
IZ(min)
∆VZ
∆IZ
ZR
TA = -40 to +85°C
IZ(min) < IZ < 1mA TA = 25°C
TA = -40 to +85°C
1mA < IZ < 20mA TA = 25°C
TA = -40 to +85°C
IZ = 100µA
TA = 25°C
8 10
1.0
1.5
10
20
0.2 0.6
12 20
µA
1.0 mV
1.5
10
20
0.2 0.6
Ω
Wideband Noise (RMS)
Long Term Stability of Reverse Break-
down Voltage
TA = -40 to +85°C
eN IZ = 100µA, 10Hz < f < 10kHz
∆VZ t = 1000 hours, T = 25°C ± 0.1°C,
IZ = 100µA
1.5
60
20
1.5
120
µV
20
ppm
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