LT1024_15 Datasheet, PDF (5/12 Pages) Linear Technology – Dual, Matched Picoampere, Microvolt Input, Low Noise Op Amp

TYPICAL PERFOR A CE CHARACTERISTICS
LT1024
Input Bias Current Over
Common Mode Range
60
V_S = ±15V
T_A = 25°C
40
DEVICE WITH POSITIVE
INPUT CURRENT
20
R_{IN CM} = 2 x 10¹²â„¦
0
DEVICE WITH NEGATIVE
INPUT CURRENT
– 20
–
I_B
– 40
+
V_CM
– 60
–15 –10 – 5
0
5
10 15
COMMON MODE INPUT VOLTAGE (V)
LT1024 • TPC03
Supply Current vs Supply
Voltage per Amplifier
500
400
25°C
125°C
–55°C
300
0
±5
±10
±15
± 20
SUPPLY VOLTAGE (V)
LT1024 • TPC06
Total Noise vs Source
Resistance
10.0
T_A = 25°C
V_S = ±2V TO ± 20V
AT 10Hz
AT 1kHz
1.0
R
–
R₊
R_S = 2R
0.1
AT 10Hz
AT 1kHz
RESISTOR NOISE
ONLY
0.0110_{2 103 104 105 106 107 108}
SOURCE RESISTANCE (Ω)
LT1024 • TPC09
Warm-Up Drift
5
V_S = ±15V
T_A = 25°C
4
3
2
1
0
0
1
2
3
4
5
TIME AFTER POWER ON (MINUTES)
LT1024 • TPC04
0.1Hz to 10Hz Noise
T_A = 25°C
V_S ±2V TO ± 20V
0
2
4
6
8
10
TIME (SECONDS)
LT1024 • TPC07
Common Mode Rejection and
CMRR Match vs Frequency
140
120
MATCH
100
CMRR
(∆CMRR)
80
60
40
20 _{VS = ±15V}
0 ^{TA = 25°C}
1 10 100 1k 10k 100k 1M
FREQUENCY (Hz)
LT1024 • TPC10
Offset Voltage Drift and
Tracking with Temperatures of
Representative Units
60
V_S = ±15V
2
40
1
20
1
0
2
– 20
2
– 40
1 INDIVIDUAL AMPLIFIERS
2 TRACKING (MATCH DRIFT)
– 60
–50 –25
0 25 50 75 100 125
TEMPERATURE (°C)
LT1024 • TPC05
Noise Spectrum
1000
T_A = 25°C
V_S ±2 TO ±20V
100
CURRENT NOISE
10
1
1
1/f CORNER
2.5Hz
VOLTAGE NOISE
1/f CORNER
120Hz
10
100
FREQUENCY (Hz)
1000
LT1024 • TPC08
Power Supply Rejection vs
Frequency
140
V_S = ±15V
T_A = 25°C
120
100
80
POSITIVE
SUPPLY
60
NEGATIVE
SUPPLY
40
20
0.1 1
10 100 1k 10k 100k 1M
FREQUENCY (Hz)
LT1024 • TPC11
1024fa
5