LT1251 Ver la hoja de datos (PDF) - Linear Technology
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LT1251 Datasheet PDF : 24 Pages
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LT1251/LT1256
TYPICAL PERFORMANCE CHARACTERISTICS
Bandwidth vs Feedback
Resistance, AV = 1, RL = 100Ω
70
PEAKING ≤ 0.5dB
PEAKING ≤ 5.0dB
60
50
VS = ±15V
40
VS = 5V
30
VS = ±5V
20
10
0.6
0.8 1.0 1.2 1.4 1.6 1.8
FEEDBACK RESISTANCE (kΩ)
1251/56 G11
Bandwidth vs Feedback
Resistance, AV = 10, RL = 100Ω
60
PEAKING ≤ 0.5dB
PEAKING ≤ 5.0dB
50
40
30
VS = 5V
VS = ±15V
20
VS = ±5V
10
0.4
0.6 0.8 1.0 1.2 1.4 1.6
FEEDBACK RESISTANCE (kΩ)
1251/56 G14
Bandwidth vs Feedback
Resistance, AV = 100, RL = 100Ω
10
NO PEAKING
9
VS = ±15V
8
7
VS = ±5V
6
5
VS = 5V
4
3
2
0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0
FEEDBACK RESISTANCE (kΩ)
1251/56 G17
Bandwidth vs Feedback
Resistance, AV = 1, RL = 1k
70
PEAKING ≤ 0.5dB
PEAKING ≤ 5.0dB
60
50
VS = ±15V
40
VS = 5V
30
VS = ±5V
20
10
0.6
0.8 1.0 1.2 1.4 1.6 1.8
FEEDBACK RESISTANCE (kΩ)
1251/56 G12
Voltage Gain and Phase
vs Frequency
5
PHASE
4
3
2
1
GAIN
0
–1
–2
VS = ±5V
–3 RF = 1.3k
–4 RL = 100Ω
–5
100k
1M
10M
FREQUENCY (Hz)
45
0
–45
–90
–135
–180
–225
–270
100M
1251/56 G13
Bandwidth vs Feedback
Resistance, AV = 10, RL = 1k
60
PEAKING ≤ 0.5dB
PEAKING ≤ 5.0dB
50
VS = ±15V
40
30
VS = 5V
20
VS = ±5V
10
0.4
0.6 0.8 1.0 1.2 1.4 1.6
FEEDBACK RESISTANCE (kΩ)
1251/56 G15
Off-Channel Isolation
vs Frequency
0
–10
VS = ±5V
VFS = 2.5V
–20 VC = 0V
RL = 100Ω
–30 RF = 1.5k
–40
–50
AV = 10
–60
–70
AV = 1
–80
–90
–100
10k
100k
1M
10M
FREQUENCY (Hz)
100M
1251/56 G16
Bandwidth vs Feedback
Resistance, AV = 100, RL = 1k
10
NO PEAKING
9
VS = ±15V
8
7
VS = ±5V
6
5
VS = 5V
4
3
2
0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0
FEEDBACK RESISTANCE (kΩ)
1251/56 G18
–3dB Bandwidth vs
Control Voltage
40
VS = ±5V
35
RL = 100Ω
VFS = 2.5V
RF = 1.3k
30
25
20
15
10
0
0.5
1.0
1.5
2.0
2.5
CONTROL VOLTAGE (V)
1251/56 G19
6
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