Datasheet

7
LT1389
Reverse Characteristics
Reverse Voltage Change
vs Current
Dynamic Impedance vs Frequency
Forward CharacteristicsReverse Dynamic Impedance
200ms/DIV
I
R
= 1.5µA
C
OUT
= 0.1µF
Response Time
2ms/DIV
1389-4 G08
Response Time
Temperature Drift
4V
I
R
= 1.5µA
C
OUT
= 0µF
4V
0V
10V
0V
1389-4 G09
10V
0V
0V
4.096V TYPICAL PERFOR A CE CHARACTERISTICS
UW
REVERSE VOLTAGE (V)
0
0
REVERSE CURRENT (nA)
200
600
800
1000
1.0
2.0
2.5 4.5
1389-4 G01
400
0.5 1.5
3.0
3.5
4.0
T
A
= –40°C TO 85°C
TEMPERATURE (°C)
–40
REFERENCE VOLTAGE CHANGE (mV)
6
20
1389-4 G02
0
–4
–20 0 40
–6
–8
8
4
2
–2
60
80
I
R
= 250µA
I
R
= 1.5µA
FORWARD CURRENT (mA)
0.001
0.4
FORWARD VOLTAGE (V)
0.5
0.6
0.7
0.8
0.01 0.1 1 10 100
1389-4 G06
0.3
0.2
0.1
0
0.9
1.0
T
A
= 25°C
REVERSE CURRENT (mA)
0.8
REVERSE VOLTAGE CHANGE (mV)
1.6
2.0
0.001 0.1 101
1389-4 G03
0
1.2
0.4
0.01
25°C
85°C
–40°C
REVERSE CURRENT (mA)
0.001
0.1
DYNAMIC IMPEDANCE (Ω)
10
1000
0.10.01 101
1389-4 G04
1
100
T
A
= 25°C
f = 25Hz
FREQUENCY (kHz)
0.1
DYNAMIC IMPEDANCE (kΩ)
1
10
100
0.1 1 10
1389-4 G05
0.01
0.01
I
R
= 1.5µA
C
OUT
= 0µF
I
R
= 10µA
C
OUT
= 0.68µF
I
R
= 10µA
C
OUT
= 0µF
T
A
= 25°C
I
R
= 1.5µA
C
OUT
= 0.047µF