Datasheet

LT1884/LT1885
7
CMRR vs Frequency
TYPICAL PERFOR A CE CHARACTERISTICS
UW
PSRR vs Frequency
V
n
, I
n
vs Frequency
FREQUENCY (Hz)
1
COMMON MODE REJECTION (dB)
1k
100k
18845 G07
10 100 10k
140
130
120
110
100
90
80
70
60
50
40
30
20
10
0
1M
FREQUENCY (Hz)
1
SUPPLY POWER REJECTION (dB)
1k
100k
18845 G08
10 100 10k
140
130
120
110
100
90
80
70
60
50
40
30
20
10
0
1M
POSITIVE SUPPLY
NEGATIVE SUPPLY
V
S
= ±15V
FREQUENCY (Hz)
1
1
10
100
1000
10 100 1000
18845 G09
VOLTAGE NOISE DENSITY (nV/√Hz)
CURRENT NOISE DENSITY (fA/√Hz)
CURRENT NOISE
VOLTAGE NOISE
0.1Hz to 10Hz Noise 0.01Hz to 1Hz Noise
Slew Rate vs Temperature
NOISE VOLTAGE (O.2µV/DIV)
V
S
= ±15V
T
A
= 25°C
TIME (2s/DIV)
18845 G10
NOISE VOLTAGE (O.2µV/DIV)
V
S
= ±15V
T
A
= 25°C
TIME (20s/DIV)
18845 G11
TEMPERATURE (°C)
–50 –30 –10 10 30 50 70 90 110
SLEW RATE (V/µs)
1.0
1.2
1.4
18845 G12
0.8
0.6
0.4
RISING
V
S
= ±15V
FALLING
V
S
= ±5V
RISING
V
S
= ±5V
FALLING
V
S
= ±15V
Settling Time to 0.01%
vs Output Step
SETTLING TIME (µs)
02
OUTPUT STEP (V)
2
6
10
18845 G13
–2
–6
0
4
8
–4
–8
–10
4 6 8 1012141618
20
V
S
= ±15V
A
V
= –1
A
V
= –1
A
V
= 1
A
V
= 1
SUPPLY VOLTAGE (V)
0
SUPPLY CURRENT (mA)
0.75
1.00
1.25
32
18845 G14
0.50
0.25
0
8
16
4
12
24
20
40
28
36
T
A
= 85°C
T
A
= 25°C
T
A
= –40°C
Supply Current per Amplifier
vs Supply Voltage
Input Bias Current
vs Common Mode Voltage
COMMON MODE VOLTAGE (V)
–15
INPUT BIAS CURRENT (pA)
–250
0
250
0
10
LTXXXX • TPCXX
–500
–750
–1000
–10 –5 5
500
750
1000
15
T
A
= 25°C
I
BIAS
+
I
BIAS
–