Datasheet

6
LT1389
Reverse Characteristics
Reverse Voltage Change
vs Current
Dynamic Impedance vs Frequency
Forward CharacteristicsReverse Dynamic Impedance
0.1Hz to 10Hz Noise
200ms/DIV
I
R
= 0.9µA
C
OUT
= 0.1µF
Response Time
0V
1ms/DIV
1389-2.5 G08
Response Time
Temperature Drift
3V
I
R
= 0.9µA
C
OUT
= 0µF
3V
2V
1V
0V
5V
0V
1389-2.5 G09
2.5V TYPICAL PERFOR A CE CHARACTERISTICS
UW
REVERSE VOLTAGE (V)
0
REVERSE CURRENT (nA)
400
600
1.6 2.0 2.4 2.8
1389-2.5 G01
200
0
0.4
0.8
1.2
1000
800
T
A
= –40°C TO 85°C
TEMPERATURE (°C)
–40
REVERSE VOLTAGE CHANGE (mV)
3.0
0
1389-2.5 TA02
0
–2.0
–20 20
–3.0
–4.0
4.0
2.0
1.0
–1.0
40 60 80
I
R
= 0.9µA
I
R
= 250µA
REVERSE CURRENT (mA)
0.4
REVERSE VOLTAGE CHANGE (mV)
0.8
1.2
0.001 0.1 1 10
1389-2.5 G03
0
1.6
2.0
0.01
–40°C
25°C
85°C
REVERSE CURRENT (mA)
0.001
0.1
DYNAMIC IMPEDANCE (Ω)
10
1000
0.10.01 101
1389-2.5 G04
1
100
T
A
= 25°C
f = 25Hz
FREQUENCY (kHz)
0.1
DYNAMIC IMPEDANCE (kΩ)
1
10
100
0.1 1 10
1389-2.5 G05
0.01
0.01
I
R
= 0.9µA
C
OUT
= 0.033µF
I
R
= 0.9µA
C
OUT
= 0µF
I
R
= 10µA
C
OUT
= 0µF
T
A
= 25°C
I
R
= 10µA
C
OUT
= 0.22µF
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
1389-2.5 G06
0.3
0.2
0.1
0
0.9
1.0
T
A
= 25°C
TIME (SEC)
0
NOISE VOLTAGE (µV/DIV)
20
60
100
40
1389-2.5 G07
–20
–60
0
40
80
–40
–80
–100
10
20
30
50
7060
I
R
= 0.9µA
5V
0V
1V
2V