Datasheet LT1389 (Analog Devices) - 5
| Manufacturer | Analog Devices |
| Description | Nanopower Precision Shunt Voltage Reference |
| Pages / Page | 12 / 5 — 1.25V TYPICAL PERFOR A CE CHARACTERISTICS. Reverse Voltage Change. … |
| File Format / Size | PDF / 219 Kb |
| Document Language | English |
1.25V TYPICAL PERFOR A CE CHARACTERISTICS. Reverse Voltage Change. Reverse Characteristics. Temperature Drift. vs Current
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LT1389
W U 1.25V TYPICAL PERFOR A CE CHARACTERISTICS Reverse Voltage Change Reverse Characteristics Temperature Drift vs Current
1.0 2.0 1.2 TA = –40°C TO 85°C 1.5 1.0 0.8 1.0 µA) 0.8 0.5 0.6 – 40°C 0 0.6 I 0.4 R = 250µA – 0.5 25°C 0.4 REVERSE CURRENT ( –1.0 0.2 IR = 0.8µA REVERSE VOLTAGE CHANGE (mV) 0.2 85°C REFERENCE VOLTAGE CHANGE (mV) –1.5 0 – 2.0 0 0 0.4 0.8 1.2 1.6 – 40 –20 0 20 40 60 80 0.001 0.01 0.1 1 10 REVERSE VOLTAGE (V) TEMPERATURE (°C) REVERSE CURRENT (mA) 1389-1.25 G03 1389-1.25 G01 1389-1.25 G02
Reverse Dynamic Impedance Dynamic Impedance vs Frequency Forward Characteristics
1000 100 1.0 T T A = 25°C A = 25°C TA = 25°C f = 25Hz 0.9 ) 0.8 Ω 100 Ω 10 0.7 0.6 I I 10 1 R = 0.8µA R = 0.8µA 0.5 COUT = 0µF COUT = 0.047µF 0.4 IR = 10µA C 0.3 1 0.1 OUT = 0.1µF FORWARD VOLTAGE (V) DYNAMIC IMPEDANCE ( DYNAMIC IMPEDANCE (k I 0.2 R = 10µA COUT = 0µF 0.1 0.1 0.01 0 0.001 0.01 0.1 1 10 0.01 0.1 1 10 0.001 0.01 0.1 1 10 100 REVERSE CURRENT (mA) FREQUENCY (kHz) FORWARD CURRENT (mA) 1389-1.25 G04 1389-1.25 G05 1389-1.25 G06
0.1Hz to 10Hz Noise Response Time Response Time
25 IR = 0.8µA 20 1.5V 1.5V 1V 1V 15 0.5V 0.5V 10 0V 0V µV/DIV) 5 0 5V 5V 0V 0V – 5 –10 I 1389-1.25 G09 R = 0.8µA 1ms/DIV 1389-1.25 G08 IR = 0.8µA 200ms/DIV NOISE VOLTAGE ( C C OUT = 0µF OUT = 0.1µF –15 – 20 – 25 0 10 20 30 40 50 60 70 TIME (SEC) 1389-1.25 G07 5
W U 1.25V TYPICAL PERFOR A CE CHARACTERISTICS Reverse Voltage Change Reverse Characteristics Temperature Drift vs Current
1.0 2.0 1.2 TA = –40°C TO 85°C 1.5 1.0 0.8 1.0 µA) 0.8 0.5 0.6 – 40°C 0 0.6 I 0.4 R = 250µA – 0.5 25°C 0.4 REVERSE CURRENT ( –1.0 0.2 IR = 0.8µA REVERSE VOLTAGE CHANGE (mV) 0.2 85°C REFERENCE VOLTAGE CHANGE (mV) –1.5 0 – 2.0 0 0 0.4 0.8 1.2 1.6 – 40 –20 0 20 40 60 80 0.001 0.01 0.1 1 10 REVERSE VOLTAGE (V) TEMPERATURE (°C) REVERSE CURRENT (mA) 1389-1.25 G03 1389-1.25 G01 1389-1.25 G02
Reverse Dynamic Impedance Dynamic Impedance vs Frequency Forward Characteristics
1000 100 1.0 T T A = 25°C A = 25°C TA = 25°C f = 25Hz 0.9 ) 0.8 Ω 100 Ω 10 0.7 0.6 I I 10 1 R = 0.8µA R = 0.8µA 0.5 COUT = 0µF COUT = 0.047µF 0.4 IR = 10µA C 0.3 1 0.1 OUT = 0.1µF FORWARD VOLTAGE (V) DYNAMIC IMPEDANCE ( DYNAMIC IMPEDANCE (k I 0.2 R = 10µA COUT = 0µF 0.1 0.1 0.01 0 0.001 0.01 0.1 1 10 0.01 0.1 1 10 0.001 0.01 0.1 1 10 100 REVERSE CURRENT (mA) FREQUENCY (kHz) FORWARD CURRENT (mA) 1389-1.25 G04 1389-1.25 G05 1389-1.25 G06
0.1Hz to 10Hz Noise Response Time Response Time
25 IR = 0.8µA 20 1.5V 1.5V 1V 1V 15 0.5V 0.5V 10 0V 0V µV/DIV) 5 0 5V 5V 0V 0V – 5 –10 I 1389-1.25 G09 R = 0.8µA 1ms/DIV 1389-1.25 G08 IR = 0.8µA 200ms/DIV NOISE VOLTAGE ( C C OUT = 0µF OUT = 0.1µF –15 – 20 – 25 0 10 20 30 40 50 60 70 TIME (SEC) 1389-1.25 G07 5
