6
lt1251/lt1256
典型 perforM一个Nce characTERISTICS
UW
频率 (hz)
100k
电压 增益 (db)
阶段 变换 (deg)
1M 10M 100M
1251/56 g13
5
4
3
2
1
0
–1
–2
–3
–4
–5
45
0
–45
–90
–135
–180
–225
–270
V
S
= ±5v
R
F
= 1.3k
R
L
= 100
Ω
阶段
增益
电压 增益 和 阶段
vs 频率
带宽 vs 反馈
阻抗, 一个
V
= 1, r
L
= 1k
反馈 阻抗 (k
Ω
)
0.6
–3db 带宽 (mhz)
70
60
50
40
30
20
10
0.8
1.0 1.2 1.4
1251/56 g12
1.6 1.8
PEAKING
≤
0.5db
PEAKING
≤
5.0db
V
S
= ±15v
V
S
= ±5v
V
S
= 5v
反馈 阻抗 (k
Ω
)
0.6
–3db 带宽 (mhz)
70
60
50
40
30
20
10
0.8
1.0 1.2 1.4
1251/56 g11
1.6 1.8
PEAKING
≤
0.5db
PEAKING
≤
5.0db
V
S
= ±15v
V
S
= ±5v
V
S
= 5v
带宽 vs 反馈
阻抗, 一个
V
= 1, r
L
= 100
Ω
带宽 vs 反馈
阻抗, 一个
V
= 10, r
L
= 100
Ω
反馈 阻抗 (k
Ω
)
0.4
–3db 带宽 (mhz)
60
50
40
30
20
10
0.6
0.8 1.0 1.2
1251/56 g14
1.4 1.6
PEAKING
≤
0.5db
PEAKING
≤
5.0db
V
S
= 5v
V
S
= ±15v
V
S
= ±5v
带宽 vs 反馈
阻抗, 一个
V
= 100, r
L
= 100
Ω
反馈 阻抗 (k
Ω
)
0.2 0.4
–3db 带宽 (mhz)
2.0
1251/56 g17
0.6 0.8
1.0 1.41.2
1.6 1.8
10
9
8
7
6
5
4
3
2
V
S
= ±15v
V
S
= 5v
V
S
= ±5v
非 peaking
带宽 vs 反馈
阻抗, 一个
V
= 10, r
L
= 1k
反馈 阻抗 (k
Ω
)
0.4
–3db 带宽 (mhz)
60
50
40
30
20
10
0.6
0.8 1.0 1.2
1251/56 g15
1.4 1.6
PEAKING
≤
0.5db
PEAKING
≤
5.0db
V
S
= 5v
V
S
= ±15v
V
S
= ±5v
带宽 vs 反馈
阻抗, 一个
V
= 100, r
L
= 1k
反馈 阻抗 (k
Ω
)
0.2 0.4
–3db 带宽 (mhz)
2.0
1251/56 g18
0.6 0.8
1.0 1.41.2
1.6 1.8
10
9
8
7
6
5
4
3
2
V
S
= ±15v
V
S
= 5v
V
S
= ±5v
非 peaking
频率 (hz)
止-频道 分开 (db)
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
10k 1M 10M 100M
1251/56 g16
100k
V
S
= ±5v
V
FS
= 2.5v
V
C
= 0v
R
L
= 100
Ω
R
F
= 1.5k
一个
V
= 10
一个
V
= 1
止-频道 分开
vs 频率
–3db 带宽 vs
控制 电压
控制 电压 (v)
0
–3db 带宽 (mhz)
40
35
30
25
20
15
10
0.5 1.0 1.5 2.0
1251/56 g19
2.5
V
S
= ±5v
R
L
= 100
Ω
V
FS
= 2.5v
R
F
= 1.3k