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參數(shù)資料
| 型號： | LT5514 |
| 廠商： | Linear Technology Corporation |
| 元件分類： | ADC |
| 英文描述： | Ultralow Distortion IF Amplifier/ADC Driver with Digitally Controlled Gain |
| 中文描述： | 超低失真IF放大器/ ADC的數(shù)字控制增益驅(qū)動 |
| 文件頁數(shù)： | 9/20頁 |
| 文件大?。?/td> | 275K |
| 代理商： | LT5514 |
9
LT5514
5514f
TYPICAL PERFOR U
ENA = ENB = 3V, control input levels V
IL
= 0.6V, V
IH
= 3V unless otherwise noted. Test circuit shown in Figure 10 unless otherwise
noted. Note 1: Subtract 0.75ns calibration delay from output plots to estimate the LT5514 group delay. Note 2: When specified, C
OUT
is connected differentially across the LT5514 OUT
+
, OUT
–
output pins.
Pulse Response vs C
OUT
at Max
Gain. Output Level is 2V
P-P
into
50
External Load
(Standard Mode) T
A
= 25
°
C, V
CC
= 5V, V
CCO
= 5V,
2ns/DIV
5514 G27
0pF
22pF TO
GROUND
EACH
OUTPUT
C
OUT
0pF
1pF
1.8pF
3.3pF
4.7pF
6.8pf
10pF
11pF
18pF
INPUT
R
MATCH
= 255
2ns/DIV
5514 G28
4V
P-P
3V
P-P
2V
P-P
INPUTS
C
OUT
= 0.82pF
1ns/DIV
5514 G29
MAX GAIN
1.5dB STEP
3dB STEP
6dB STEP
12dB STEP
INPUT
Pulse Response vs Output Level at
Max Gain. Indicated Voltage
Levels are into 50
External Load
Pulse Response vs Attenuation,
Output Level is 4V
P-P
at Max Gain
into 50
External Load
Pulse Response vs Attenuation,
Output Level is 2V
P-P
at Max Gain
into 50
External Load
1ns/DIV
5514 G30
MAX GAIN
1.5dB STEP
3dB STEP
6dB STEP
12dB STEP
INPUT
R
MATCH
= 255
Pulse Response vs Attenuation,
Output Level is 2V
P-P
at Max Gain
into 50
External Load
1ns/DIV
5514 G31
MAX GAIN
1.5dB STEP
3dB STEP
6dB STEP
12dB STEP
INPUT
R
MATCH
= 255
, C
OUT
= 1.8pF
Pulse Response vs Attenuation,
LT5514 Levels are: V
IN
= 66mV
P-P
,
V
OUT
= 2V
P-P
at Max Gain
1ns/DIV
5514 G32
MAX GAIN
1.5dB STEP
3dB STEP
6dB STEP
12dB STEP
INPUT
R
OUT
= 100
FIGURE 9 TEST CIRCUIT
Pulse Response vs Attenuation,
LT5514 Levels are: V
IN
= 66mV
P-P
,
V
OUT
= 4V
P-P
at Max Gain
1ns/DIV
5514 G33
MAX GAIN
1.5dB STEP
3dB STEP
6dB STEP
12dB STEP
INPUT
R
OUT
= 200
FIGURE 9 TEST CIRCUIT
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