
LT1990
12
1990fb
TYPICAL PERFOR A CE CHARACTERISTICS
UW
Warm-Up Drift vs Time
Settling Time vs Output Step,
G = 1
Settling Time vs Output Step,
G = 10
Voltage Noise Density
vs Frequency
0.01 to 1Hz Noise Voltage
0.1 to 10Hz Noise Voltage
Overshoot vs Capacitive Load
Output Impedance vs Frequency
Power Supply Rejection Ratio
vs Frequency
OUTPUT STEP (V)
–10
SETTLING
TIME
(
s)
60
50
40
30
20
6
1990 G22
–6
–8
–4 –2
0
4
8
2
10
OUTPUT STEP (V)
–10
6
–6
–8
–4 –2
0
4
8
2
10
SETTLING
TIME
(
s)
320
300
280
260
240
220
200
180
160
140
1990 G23
TIME (S)
080
1990 G26
20
10
30
50
70
90
40
60
100
TIME (S)
0
NOISE
VOLTAGE
(10
V/DIV)
REF
NOISE
VOLTAGE
(10
V/DIV)
REF
8
1990 G25
2
13
5
7
9
4
6
10
FREQUENCY (Hz)
10
100
1000
10000
100
1000
1990 G24
VOLTAGE
NOISE
DENSITY
(nV/
√
Hz)
1
10000
CAPACITIVE LOAD (pF)
10
OVERSHOOT
(%)
30
25
20
15
10
5
100
1000
10000
1990 G27
0.01% OF
STEP
0.01% OF
STEP
0.1% OF
STEP
0.1% OF
STEP
0.01% OF
STEP
0.01% OF
STEP
0.1% OF
STEP
0.1% OF
STEP
VS = ±15V
RL = 10k
VS = ±15V
RL = 10k
VOUT = ±50mV
GAIN = 1
RL = 10k
VS = ±1.5V TO ±15V
TA = 25°C
VS = ±1.5V TO ±15V
TA = 25°C
G = 1
VS = ±1.5V TO ±15V
TA = 25°C
G = 1
VS = ±15V
VS = 3V, 0V
FREQUENCY (Hz)
10
OUTPUT
IMPEDANCE
(
)
100
1k
5k
100
10k
100k
1990 G19
1
1k
200k
FREQUENCY (Hz)
POWER
SUPPLY
REJECTION
RATIO
(dB)
70
60
50
40
30
20
10
0
–10
–20
–30
–40
10
1k
10k
1990 G20
100
100k 200k
VS = 5V, 0V
TA = 25°C
G = 1
G = 10
G = 1
G = 10
TIME AFTER POWER-UP (S)
0
CHANGE
IN
OFFSET
VOLTAGE
(
V)
60
40
20
0
–20
–40
–60
10
20
30
40
1990 G21
50
VS = ±15V
TA = 25°C
REFERRED TO INPUT
VS = 5V, 0V
TA = 25°C