LT1002 Datasheet, PDF (6/16 Pages) Linear Technology – Dual, Matched Precision Operational Amplifier

LT1002
TYPICAL PERFORMANCE CHARACTERISTICS
Matching and Individual Amplifier
Input Bias Current
Bias and Offset Currents vs Temperature Over the Common Mode Range
2.0
1.5
1.8
V_S = ±15V
–
1.6
1.0
Ib +
VCM
1.4
MATCHING: NON INVERTING
1.2
BIAS CURRENT
0.5 _{DEVICE WITH POSITIVE INPUT CURRENT}
1.0
0.8
0.6
0.4
0.2
INDIIVNIDDIUVAIDLUAAMLNPAOMMONAPF-TIFNCBSVHIEA.INTSOGFCC:FUUSINRREVRRTEEECRNNUITTNRGRE&NT
0
–50 –25 0 25 50 75 100 125
0
V_S = ±15V
T_A = 25°C
–.5
DEVICE WITH NEGATIVE INPUT CURRENT
–1.0
–1.5
–15
COMMON-MODE
INPUT RESISTANCE
=
02.18nVA=
280G
Ω
–10 –5
0
5
10 15
TEMPERATURE (°C)
COMMON-MODE INPUT VOLTAGE
1001 G10
1002 G11
Open Loop Voltage Gain
vs Temperature
1200k
1000k
800k
V_S = ±15V, V_O = ±12V
600k
400k
V_S = ±3V, V_O = ±1V
200k
0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
1002 G13
Open Loop Voltage Gain
Frequency Response
140
120
T_A = 25°C
100
80
V_S = ±15V
60
40
V_S = ±3V
20
0
–20
0.1 1 10 100 1k 10k 100k 1M 10M
FREQUENCY (Hz)
1002 G14
Open Loop Gain Mismatch
vs Frequency
1.0
V_S = ±15V
T_A = 25°C
0.8
Closed Loop Output Impedance
100
10
A_V = 1000
0.6
1
0.4
0.2
0
1
0.1
PERCENT GAIN MISMATCH =
OUTPUT A – OUTPUT B _{× 100%}
1/₂(OUTPUT A + OUTPUT B)
0.01
10 100 1k 10k 100k
FREQUENCY (Hz)
1002 G16
0.001
1
A_V = +1
I_O = ±1mA
V_S = ±15V
T_A = 25°C
10
100
1k
10k 100k
FREQUENCY (Hz)
1002 G17
Input Bias Current vs.
Differential Input Voltage
30
V_S = ±15V
T_A = 25°C
20
10
I_B ≈ 1 nA
0
0.1 0.3
1.0 3.0
10
30
± DIFFERENTIAL INPUT (VOLTS)
1002 G12
Gain, Phase Shift vs. Frequency
20
80
16
PHASE 25°C
100
12
25°C
8
PHASE
MARGIN
4
GAIN 125°C
= 60°
0 ^{GAIN 25°C & –55°C}
V_S = ±15V
–4
PHASE MARGIN –55°C = 63°
–8
125°C = 57°
0.1
0.2
0.5
1
FREQUENCY (MHz)
120
140
160
180
200
220
2
1002 G15
Power Supply Rejection and
PSRR Match vs Frequency
160
V_S = ±15V ±2V pp
140
T_A = 25°C
MATCH (NEGATIVE SUPPLY)
120
100
80
60
NEGATIVE SUPPLY
POSITIVE SUPPLY
40
MATCH (POSITIVE SUPPLY)
20
0
0.1 1 10 100 1k 10k 100k
FREQUENCY (Hz)
1002 G18
6