LT1251/LT1256
典型性能特性
带宽与反馈
阻抗,
V
= 1, R
L
= 100Ω
70
60
-3dB带宽(MHz )
50
V
S
= ±15V
40
V
S
= 5V
30
V
S
= ±5V
20
10
高峰
≤
0.5dB
高峰
≤
5.0dB
-3dB带宽(MHz )
电压增益(分贝)
0.6
1.6
1.0
1.2
1.4
0.8
反馈电阻值(kΩ )
带宽与反馈
阻抗,
V
= 10, R
L
= 100Ω
60
高峰
≤
0.5dB
高峰
≤
5.0dB
-3dB带宽(MHz )
60
-3dB带宽(MHz )
50
50
V
S
= ±15V
40
V
S
= 5V
信道外隔离度(dB )
40
V
S
= ±15V
V
S
= 5V
30
20
V
S
= ±5V
10
0.4
0.8
1.0
1.2
1.4
0.6
反馈电阻值(kΩ )
1.6
带宽与反馈
阻抗,
V
= 100, R
L
= 100Ω
10
NO PEAKING
9
9
10
-3dB带宽(MHz )
-3dB带宽(MHz )
8
7
8
7
6
5
4
3
-3dB带宽(MHz )
V
S
= ±15V
V
S
= ±5V
6
5
4
3
2
0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0
反馈电阻值(kΩ )
1251/56 G17
V
S
= 5V
6
ü W¯¯
1.8
1251/56 G11
1251/56 G14
带宽与反馈
阻抗,
V
= 1, R
L
= 1k
70
60
50
V
S
= ±15V
40
V
S
= 5V
30
V
S
= ±5V
20
10
5
电压增益和相位
与频率
45
相
0
–45
–90
–135
收益
–180
–225
V
S
= ±5V
R
F
= 1.3k
R
L
= 100Ω
1M
10M
频率(Hz)
–270
相移(度)
高峰
≤
0.5dB
高峰
≤
5.0dB
4
3
2
1
0
–1
–2
–3
–4
0.6
1.6
1.0
1.2
1.4
0.8
反馈电阻值(kΩ )
1.8
–5
100k
100M
1251/56 G13
1251/56 G12
带宽与反馈
阻抗,
V
= 10, R
L
= 1k
高峰
≤
0.5dB
高峰
≤
5.0dB
关通道隔离
与频率
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
A
V
= 1
V
S
= ±5V
V
FS
= 2.5V
V
C
= 0V
R
L
= 100Ω
R
F
= 1.5k
A
V
= 10
30
20
V
S
= ±5V
10
0.4
0.8
1.0
1.2
1.4
0.6
反馈电阻值(kΩ )
1.6
–100
10k
100k
1M
10M
频率(Hz)
100M
1251/56 G16
1251/56 G15
带宽与反馈
阻抗,
V
= 100, R
L
= 1k
40
NO PEAKING
V
S
= ±15V
-3dB带宽与
控制电压
V
S
= ±5V
R
L
= 100Ω
V
FS
= 2.5V
R
F
= 1.3k
35
30
25
20
15
10
V
S
= ±5V
V
S
= 5V
2
0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0
反馈电阻值(kΩ )
1251/56 G18
0
0.5
1.0
1.5
2.0
控制电压(V)
2.5
1251/56 G19