Datasheet

LT1881/LT1882
12
18812fb
TYPICAL PERFORMANCE CHARACTERISTICS
Common Mode Rejection Ratio
vs Frequency 0.1Hz to 10Hz Noise Noise Voltage vs Frequency
Noise Current Density
vs Frequency
Total Noise vs Source Resistance
Overshoot vs Capacitive Load
Series Output Resistance
vs Capacitive Load
Undistorted Output Swing
vs Frequency THD + Noise vs Frequency
FREQUENCY (Hz)
0.1 1 10 100 1k 10k 100k 1M
CMRR (dB)
120
100
80
60
40
20
0
1881/2 G36
1s/DIV
0 5 10 15 20 25 30
NOISE VOLTAGE (0.2μV/DIV)
18812 G37
FREQUENCY (Hz)
1
NOISE VOLTAGE DENSITY (nV/VHz)
50
45
40
35
30
25
20
15
10
5
0
10010 1k
18812 G38
V
S
= ±5V
A
V
= 1
FREQUENCY (Hz)
1
NOISE CURRENT DENSITY (fA/√Hz)
180
160
140
120
100
80
60
40
20
0
10010 1000
18812 G39
V
S
= ±15V
R
S
(Ω)
1 10 100 1k 10k 100k 1M
TOTAL INPUT REFERRED NOISE (nV/√Hz)
1000
100
10
1
18812 G40
CAPACITIVE LOAD (pF)
10
OVERSHOOT (%)
30
25
20
15
10
5
0
1k100 10k
18812 G41
V
S
= ±15V
R
L
= 10k
A
V
= 1
A
V
= –1
CAPACITIVE LOAD (pF)
0 2000 4000 6000 8000 10000
SERIES OUTPUT RESISTANCE (Ω)
120
100
80
60
40
20
0
1881/2 G42
A
V
= 1
T
A
= 25°C
V
S
= ±2.5V
V
S
= ±15V
FREQUENCY (kHz)
1
PEAK-TO-PEAK OUTPUT VOLTAGE (V)
35
30
25
20
15
10
5
0
10010
18812 G43
A
V
= –1
T
A
= 25°C
V
S
= ±15V
A
V
= –1
T
A
= 25°C
V
S
= ±2.5V
FREQUENCY (Hz)
10
THD + NOISE (%)
10
1
0.1
0.01
0.001
0.0001
1k100 10k 100k
18812 G44
V
S
= ±15V
V
IN
= 2V
P-P
A
V
= –1
A
V
= 1