TS4040_07 Datasheet, PDF (4/9 Pages) STMicroelectronics – 2.5V micropower shunt voltage reference

Electrical characteristics
TS4040
Figure 1. Reference voltage versus cathode Figure 2. Minimum operating current
current
Reference voltage versus cathode current
15
10
5
0
-5
-0.5 0 0.5 1 1.5 2 2.5
Cathode voltage (V)
Minimum operating current
3
2.5
T=+25°C
2
T=+85°C
1.5
T=-40°C
1
0.5
0
0
20
40
Cathode current (µA)
Figure 3. Test circuit
Test circuit
R
Ik=(Vin-Vref)/R
Vin
Figure 4. Reference voltage versus
temperature
2.58
2.56
+2%
2.54
+1%
2.52
Vout=Vref
2.5
2.48
-1%
2.46
2.44
-2%
2.42
-40 -20 0 20 40 60 80
Temperature (°C)
Figure 5. Static impedance R_ka versus
temperature
Static impedance (Rka) versus
temperature
0.2
0.15
0.1
0.05
0
-40 -20 0 20 40 60 80
Temperature (°C)
Figure 6. Noise voltage versus frequency
1500
1000
Noise voltage versus Frequency
CL=100µF
CL=10µF
500
0
0.1
CL=1µF
CL=100nF
CL=0
10.0
1.0
100.0
Frequency (KHz)
1000.0
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