LT1008_1 Datasheet, PDF (6/16 Pages) Linear Technology – Picoamp Input Current, Microvolt Offset, Low Noise Op Amp

LT1008
TYPICAL PERFOR A CE CHARACTERISTICS
Supply Current vs Supply Voltage
500
450
400
350
300
0
25°C
125°C
–55°C
5
10
15
SUPPLY VOLTAGE (±V)
20
1008 G07
Output Short-Circuit Current vs Time
15
12
–55°C
9
6
25°C
125°C
3
0
–3
–6
125°C
25°C
–9
–12
–55°C
–15
0 0.5 1.0 1.5 2.0 2.5 3.0 3.5
TIME FROM OUTPUT SHORT (MINUTES)
1008 G08
0.1Hz to 10Hz Noise
T_A = 25°C
V_S = ±2V TO ±20V
0
2
4
6
8
10
TIME (SECONDS)
1008 G09
Noise Spectrum
1000
T_A = 25°C
V_S = ±2V TO ±20V
100
CURRENT NOISE
10 _{1/f CORNER}
2.5Hz
VOLTAGE NOISE
1/f CORNER
120Hz
1
1
10
100
1000
FREQUENCY (Hz)
1008 G10
Total Noise vs Source Resistance
10
T_A = 25°C
V_S = ±2V TO ±20V
1 _R–
R₊
AT 10Hz
AT 1Hz
R_S = 2R
0.1
AT 1Hz
AT 10Hz
0.01
10² 10³
RESISTOR NOISE ONLY
10⁴ 10⁵ 10⁶ 10⁷ 10⁸
SOURCE RESISTANCE (Ω)
1008 G11
Voltage Gain vs Frequency
140
120
C_F = 3pF
100
C_S = 10pF
80
C_S = 100pF
60
C_F = 30pF
40
Gain, Phase Shift vs Frequency
with Alternate Compensation
40
100
GAIN
C_S = 10pF
30
φ
20 CS = 10pF
GAIN
C_S = 100pF
10
120
φ
C_S = 100pF
140
160
Gain, Phase Shift vs Frequency
with Standard (Feedback)
Compensation
40
GAIN
30
C_F = 3pF
20
GAIN
C_F = 30pF
100
φ
C_F = 30pF
120
φ
C_F = 3pF
140
10
160
20
0
PHASE MARGIN
WITH C_S = 100pF = 56°
0
T_A = 25°C
–20
–10 ^{VS = ±15V}
0.01 0.1 1 10 100 1k 10k 100k 1M 10M 0.01
0.1
1
FREQUENCY (Hz)
FREQUENCY (MHz)
1008 G12
180
200
10
1008 G13
PHASE MARGIN
0 _{WITH CF = 30pF = 60°}
T_A = 25°C
V_S = ±15V
–10
0.01
0.1
1
FREQUENCY (MHz)
180
200
10
1008 G14
1008fb
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