Datasheet

LT1782
10
1782fc
TYPICAL PERFORMANCE CHARACTERISTICS
Capacitive Load Handling
Overshoot vs Capacitive Load
Undistorted Output Swing
vs Frequency
Total Harmonic Distortion + Noise
vs Frequency
Total Harmonic Distortion + Noise
vs Load Resistance
Total Harmonic Distortion + Noise
vs Output Voltage Amplitude Open-Loop Gain
Output Impedance vs Frequency
Disabled Output Impedance
vs Frequency (Note 8)
Settling Time to 0.1%
vs Output Step
FREQUENCY (Hz)
100
0.1
OUTPUT IMPEDANCE (Ω)
10
10k
10k1k 100k 1M
1782 G19
1
100
1k
A
V
= 100
V
S
= ±2.5V
A
V
= 10
A
V
= 1
FREQUENCY (Hz)
100
100
OUTPUT IMPEDANCE (Ω)
10k
1M
1k 10k 100k 1M
1782 G20
1k
100k
V
S
= ±2.5V
V
PIN5
(SHUTDOWN) = 2.5V
SETTLING TIME (µs)
25 30 35 40 50 60 70 80
OUTPUT STEP (V)
1782 G21
4
3
2
1
0
–1
–2
–3
–4
A
V
= 1 A
V
= –1
A
V
= 1 A
V
= –1
V
S
= ±5V
CAPACITIVE LOAD (pF)
10
OVERSHOOT (%)
40
35
30
25
20
15
10
5
0
100 1000 10000
1782 G22
V
S
= 5V, 0V
V
CM
= 2.5V
A
V
= 1
A
V
= 5
A
V
= 10
FREQUENCY (Hz)
100 1k 10k 100k
OUTPUT SWING (V
P-P
)
12
10
8
6
4
2
0
1782 G23
DISTORTION ≤ 1%
A
V
= 1
V
S
= ±1.5V
V
S
= ±5V
FREQUENCY (Hz)
0.010
THD + NOISE (%)
0.1
10 1k 10k
1782 G24
0.001
100
1
A
V
= –1
R
F
= R
G
= 100k
A
V
= 1
V
S
= 3V, 0V
V
OUT
= 2V
P-P
V
CM
= 1.2V
R
L
= 10k
LOAD RESISTANCE TO GROUND (Ω)
0.1
THD + NOISE (%)
1
100 100k
1782 G25
0.01
0.001
1k 10k
10
V
S
= 3V TOTAL
A
V
= 1
V
IN
= 2V
P-P
AT 1kHz
V
S
= ±1.5V
V
IN
= ±1V
V
S
= 3V, 0V
V
IN
= 0.5V TO 2.5V
V
S
= 3V, 0V
V
IN
= 0.2V TO 2.2V
OUTPUT VOLTAGE AMPLITUDE (V
P-P
)
0.1
THD + NOISE (%)
1
0 1 2 3
1782 G26
0.01
0.001
10
A
V
= –1, R
F
= R
G
= 100k
V
S
= ±1.5V
V
CM
= 0V
A
V
= 1
V
S
= ±1.5V
V
CM
= 0V
f = 1kHz, R
L
= 10k
A
V
= –1, R
F
= R
G
= 100k
V
S
= 3V, 0V
V
CM
= 1.5V
A
V
= 1
V
S
= 3V. 0V
V
CM
= 1.5V
OUTPUT VOLTAGE (V)
–6
–5 –4 –3 –2 –1 0 1 2 3 4 5 6
INPUT OFFSET VOLTAGE CHANGE (50µV/DIV)
1782 G27
R
L
= 10k
R
L
= 50k
R
L
= 2k
V
S
= ±5V