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參數(shù)資料
| 型號： | HFA1155IH96 |
| 廠商： | Intersil |
| 文件頁數(shù)： | 6/10頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC OPAMP CFA 380MHZ LP SOT23-5 |
| 標準包裝： | 3,000 |
| 應用： | 電流反饋 |
| 電路數(shù)： | 1 |
| -3db帶寬： | 365MHz |
| 轉(zhuǎn)換速率： | 1650 V/µs |
| 電流 - 電源： | 5.5mA |
| 電流 - 輸出 / 通道： | 55mA |
| 電壓 - 電源，單路/雙路(±)： | 4.5 V ~ 11 V，±2.25 V ~ 5.5 V |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | SC-74A，SOT-753 |
| 供應商設備封裝： | SOT-23-5 |
| 包裝： | 帶卷 (TR) |
5
PC Board Layout
The frequency response of this amplifier depends greatly on
the amount of care taken in designing the PC board. The
use of low inductance components such as chip
resistors and chip capacitors is strongly recommended,
while a solid ground plane is a must!
Attention should be given to decoupling the power supplies.
A large value (10
μF) tantalum in parallel with a small value
chip (0.1
μF) capacitor works well in most cases.
Terminated microstrip signal lines are recommended at the
input and output of the device. Output capacitance, such as
that resulting from an improperly terminated transmission
line, will degrade the frequency response of the amplifier
and may cause oscillations. In most cases, the oscillation
can be avoided by placing a resistor in series with the
output.
Care must also be taken to minimize the capacitance to ground
seen by the amplifier’s inverting input. The larger this
capacitance, the worse the gain peaking, resulting in pulse
overshoot and eventual instability. To reduce this capacitance,
remove the ground plane under traces connected to -IN and
keep these traces as short as possible.
0
100
200
300
400
0
10
20
30
40
50
LOAD CAPACITANCE (pF)
S
E
RI
ES
OUTPUT
R
E
SI
STANC
E
(Ω
)
150
250
350
50
FIGURE 1. RECOMMENDED SERIES OUTPUT RESISTOR vs
LOAD CAPACITANCE
AV =+2
Typical Performance Curves VSUPPLY = ±5V, RF = Value From the “Optimum Feedback Resistor” Table, TA = 25oC,
RL = 100Ω, Unless Otherwise Specified
FIGURE 2. SMALL SIGNAL PULSE RESPONSE
FIGURE 3. LARGE SIGNAL PULSE RESPONSE
200
150
100
50
0
-50
-100
-150
-200
O
U
TPUT
VO
LTAG
E
(mV)
TIME (5ns/DIV.)
AV = +1
2.0
1.5
1.0
0.5
0
-0.5
-1.0
-1.5
-2.0
O
U
TPUT
VO
LTAG
E
(V)
TIME (5ns/DIV.)
AV = +1
HFA1155
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