Datasheet

7
LT1672/LT1673/LT1674
Power Supply Rejection Ratio
vs Frequency
Common Mode Rejection Ratio
vs Frequency
Warm-Up Drift vs Time
Open-Loop Gain
V
S
= 5V, 0V
Open-Loop Gain
V
S
= ±15V
Output Impedance vs Frequency
TYPICAL PERFORMANCE CHARACTERISTICS
U
W
FREQUENCY (Hz)
100
COMMON MODE REJECTIO RATIO (dB)
1k 10k 20k
1672/3/4 G13
V
S
= ±2.5V
100
90
80
70
60
50
40
30
20
10
0
FREQUENCY (Hz)
10
POWER SUPPLY REJECTION RATIO (dB)
100
90
80
70
60
50
40
30
20
10
0
100 1k 10k
1672/3/4 G14
V
S
= ±2.5V
+PSRR
–PSRR
1672/3/4 G15
FREQUENCY (Hz)
10
0.1
OUTPUT IMPEDANCE (kΩ)
1
10
100
100 1k 10k
A
V
= 10
A
V
= 5
V
S
= ±2.5V
TIME AFTER POWER-UP (SEC)
0
OFFSET VOLTAGE CHANGE (µV)
40
20
30
10
0
–10
–20
–30
– 40
160
1672/3/4 G16
40 80 120 20014020 60 100 180
V
S
= ±15V
V
S
= ±2.5V
OUTPUT VOLTAGE (V)
0
OFFSET VOLTAGE CHANGE (µV)
–5
0
5
3
5
1672/3/4 G17
–10
–15
–20
12 4
10
15
20
6
V
S
= 5V, 0V
R
L
= 1M
R
L
= 100k
0.1Hz to 10Hz
Output Voltage Noise
Gain Bandwidth and Phase
Margin vs Supply Voltage Capacitive Load Handling
SUPPLY VOLTAGE (V)
0
FREQUENCY (kHz)
16
14
12
10
8
6
80
70
60
50
40
30
5
10 15 20
1672/3/4 G10
25 30
PHASE MARGIN
GBW
PHASE MARGIN (DEG)
MEASURED AT
A
V
= 5
TIME (1s/DIV)
OUTPUT VOLTAGE (2µV/DIV)
1672/3/4 G07
V
S
= ±15V
V
CM
= 0V
CAPACITIVE LOAD (pF)
10
OVERSHOOT (%)
80
70
60
50
40
30
20
10
0
100 1k 10k
1672/3/4 G12
V
S
= ±2.5V
A
V
= 5
A
V
= 10
OUTPUT VOLTAGE (V)
–20 –15
OFFSET VOLTAGE CHANGE (µV)
0
40
20
1672/3/4 G18
–40
–80
–10 –5 0 5 1510
80
–20
20
–60
60
R
L
= 100k
V
S
= ±15V
R
L
= 1M