LT1398/LT1399/LT1399HV
TYPICAL PERFOR A CE CHARACTERISTICS
Input Voltage Noise and Current
Noise vs Frequency
1000
INPUT NOISE (nV/√Hz OR pA/√Hz)
100
R
F
= R
G
= 324Ω
R
L
= 50Ω
A
V
= +2
V
S
=
±
5V
100
OUTPUT IMPEDANCE (Ω)
10
OUTPUT IMPEDANCE (DISABLED) (Ω)
– IN
10
EN
+IN
1
10
30
100 300 1k 3k 10k 30k 100k
FREQUENCY (Hz)
1398/1399 G10
Maximum Capacitive Load
vs Feedback Resistor
1000
OUTPUT SERIES RESISTANCE (Ω)
40
100
SUPPLY CURRENT (mA)
CAPACITIVE LOAD (pF)
10
R
F
= R
G
A
V
= +2
V
S
=
±
5V
PEAKING
≤
5dB
900
1500
2100
2700
FEEDBACK RESISTANCE (Ω)
3300
1
300
Output Voltage Swing
vs Temperature
5
4
POSITIVE SUPPLY CURRENT PER AMPLIFIER (mA)
OUTPUT VOLTAGE SWING (V)
ENABLE PIN CURRENT (µA)
3
2
1
0
–1
–2
–3
–4
R
L
= 100k
R
L
= 150Ω
R
L
= 100k
R
L
= 150Ω
–5
50
25
0
75 100
–50 –25
AMBIENT TEMPERATURE (°C)
U W
1398/1399 G13
1398/1399 G16
Output Impedance vs Frequency
100k
Output Impedance (Disabled)
vs Frequency
R
F
= 365Ω
A
V
= +1
V
S
=
±
5V
10k
1
1k
0.1
0.01
10k
100k
1M
10M
FREQUENCY (Hz)
100M
1398/1399 G11
100
100k
1M
10M
FREQUENCY (Hz)
100M
1398/1399 G12
Capacitive Load
vs Output Series Resistor
R
F
= R
G
= 324Ω
V
S
=
±
5V
OVERSHOOT < 2%
30
6
5
4
Supply Current vs Supply Voltage
EN = V
–
EN = 0V
3
2
1
20
10
0
10
100
CAPACITIVE LOAD (pF)
1000
1398/1399 G14
0
0
1
2
7
3
5
6
4
SUPPLY VOLTAGE (± V)
8
9
1398/1399 G15
Enable Pin Current
vs Temperature
– 10
– 20
EN = 0V
– 30
– 40
EN = –5V
– 50
– 60
– 70
– 80
– 50 – 25
V
S
=
±
5V
5.00
4.75
4.50
4.25
4.00
3.75
3.50
3.25
Positive Supply Current per
Amplifier vs Temperature
V
S
=
±
5V
EN = – 5V
EN = 0
125
50
100
25
75
0
AMBIENT TEMPERATURE (°C)
125
3.00
–50 –25
75 100
50
25
AMBIENT TEMPERATURE (°C)
0
125
1398/1399 G17
1398/1399 G18
7
LINER [ LINEAR TECHNOLOGY ]
