LT1812 Просмотр технического описания (PDF) - Linear Technology
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LT1812 Datasheet PDF : 16 Pages
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LT1812
TYPICAL PERFORMANCE CHARACTERISTICS
Output Short-Circuit Current
vs Temperature
120
VS = ±5V
115
SOURCE
110
SINK
105
100
95
90
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
1812 G10
Open-Loop Gain and Phase
vs Frequency
70
120
TA = 25°C
60
AV = –1
100
RF = RG = 500Ω
50
GAIN
40
80
PHASE
60
±2.5V ±5V
30
40
±2.5V ±5V
20
20
10
0
0
–20
–10
10k
100k
1M 10M
FREQUENCY (Hz)
–40
100M 1000M
1812 G13
Settling Time vs Output Step
5
4
3
2
1
0
–1
–2
TA = 25°C
VS = ±5V
–3 AV = –1
RF = 500Ω
–4 CF = 3pF
0.1% SETTLING
–5
0 5 10 15 20 25 30 35
SETTLING TIME (ns)
1812 G11
Gain Bandwidth and Phase
Margin vs Supply Voltage
110
TA = 25°C
GBW
RL = 500Ω
90
GBW
RL = 100Ω
70
45
PHASE MARGIN
RL = 100Ω
40
PHASE MARGIN
RL = 500Ω
35
01 2 3 4 5 6 7
SUPPLY VOLTAGE (±V)
1812 G19
Output Impedance vs Frequency
100
10
AV = 100
AV = 10
1
AV = 1
Gain Bandwidth and Phase
Margin vs Temperature
115
RL = 500Ω
105
GBW
VS = ±5V
GBW
95
VS = ±2.5V
0.1
0.01
0.001
10k
TA = 25°C
VS = ±5V
100k 1M
10M
FREQUENCY (Hz)
100M
1812 G12
85
40
PHASE MARGIN
VS = ±5V
PHASE MARGIN
38
VS = ±2.5V
–50 –25
0 25 50 75
TEMPERATURE (°C)
36
100 125
1812 G15
8
Gain vs Frequency
6
4
TA = 25°C
AV = 1
2 NO RL
VS = ±2.5V
0
VS = ±5V
–2
–4
–6
–8
–10
–12
–14
1M
10M
100M
FREQUENCY (Hz)
500M
1812 G16
Gain vs Frequency
8
6
4
TA = 25°C
AV = 2
RL = 100Ω
2
VS = ±2.5V VS = ±5V
0
–2
–4
–6
1M
10M
100M
FREQUENCY (Hz)
500M
1812 G17
Gain vs Frequency
12
TA = 25°C
AV = –1
8
VS = ±5V
RF = RG = 500Ω
NO RL
4
CL= 1000pF
CL= 500pF
CL= 200pF
CL= 100pF
CL= 50pF
0
CL= 0
–4
–8
1
10M
FREQUENCY (Hz)
100M 200M
1812 G18
1812fb
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