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| 型号： | AD8051ARZ-REEL7 |
| 厂商： | Analog Devices Inc |
| 文件页数： | 11/25页 |
| 文件大小： | 0K |
| 描述： | IC OPAMP VF R-R LDIST LP 8SOIC |
| 标准包装： | 1,000 |
| 放大器类型： | 电压反馈 |
| 电路数： | 1 |
| 输出类型： | 满摆幅 |
| 转换速率： | 170 V/µs |
| -3db带宽： | 110MHz |
| 电流 - 输入偏压： | 1.4µA |
| 电压 - 输入偏移： | 1800µV |
| 电流 - 电源： | 4.8mA |
| 电流 - 输出 / 通道： | 45mA |
| 电压 - 电源，单路/双路(±)： | 3 V ~ 12 V，±1.5 V ~ 6 V |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SO |
| 包装： | 带卷 (TR) |
AD8051/AD8052/AD8054
Rev. J | Page 18 of 24
LAYOUT CONSIDERATIONS
The specified high speed performance of the AD8051/AD8052/
AD8054 requires careful attention to board layout and component
selection. Proper RF design techniques and low parasitic
component selection are necessary.
The PCB should have a ground plane covering all unused
portions of the component side of the board to provide a low
impedance path. The ground plane should be removed from the
area near the input pins to reduce parasitic capacitance.
Chip capacitors should be used for supply bypassing. One end
should be connected to the ground plane and the other within
3 mm of each power pin. An additional large (4.7 μF to 10 μF)
tantalum electrolytic capacitor should be connected in parallel,
but not necessarily so close, to supply current for fast, large
signal changes at the output.
The feedback resistor should be located close to the inverting
input pin to keep the parasitic capacitance at this node to a
minimum. Parasitic capacitance of less than 1 pF at the inverting
input can significantly affect high speed performance.
Stripline design techniques should be used for long signal traces
(greater than about 25 mm). These should be designed with a
characteristic impedance of 50 Ω or 75 Ω and be properly
terminated at each end.
ACTIVE FILTERS
Active filters at higher frequencies require wider bandwidth op
amps to work effectively. Excessive phase shift produced by
lower frequency op amps can significantly affect active filter
performance.
Figure 46 shows an example of a 2 MHz biquad bandwidth filter
that uses three op amps of an AD8054. Such circuits are
sometimes used in medical ultrasound systems to lower the
noise bandwidth of the analog signal before analog-to-digital
conversion.
Note that the unused amplifier’s inputs should be tied to ground.
12
13
14
2
1
6
5
7
9
10
8
AD8054
3
AD8054
R6
1k
R4
2k
R3
2k
R5
2k
R2
2k
R1
3k
C1
50pF
C2
50pF
VIN
BAND-PASS
FILTER OUTPUT
01062-
046
Figure 46. 2 MHz Biquad Band-Pass Filter Using AD8054
The frequency response of the circuit is shown in Figure 47.
FREQUENCY (Hz)
0
–10
–20
–30
–40
GA
IN
(
d
B
)
10k
100k
1M
10M
100M
01
06
2-
04
7
Figure 47. Frequency Response of 2 MHz Band-Pass Biquad Filter
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AD8051R8 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Voltage-Feedback Operational Amplifier |
| AD8051RT | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Voltage-Feedback Operational Amplifier |
| AD8052 | 制造商:AD 制造商全称:Analog Devices 功能描述:Low Cost, High Speed, Rail-to-Rail Amplifiers |
| AD8052AR | 功能描述:IC OPAMP VF R-R DUAL LDIST 8SOIC RoHS:否 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 标准包装:50 系列:- 放大器类型:J-FET 电路数:2 输出类型:- 转换速率:3.5 V/µs 增益带宽积:1MHz -3db带宽:- 电流 - 输入偏压:30pA 电压 - 输入偏移:2000µV 电流 - 电源:200µA 电流 - 输出 / 通道:- 电压 - 电源，单路/双路(±):7 V ~ 36 V，±3.5 V ~ 18 V 工作温度:0°C ~ 70°C 安装类型:通孔 封装/外壳:8-DIP（0.300"，7.62mm） 供应商设备封装:8-PDIP 包装:管件 |
| AD8052AR TUBE | 制造商:Analog Devices 功能描述:AMP DUAL HSPEED RRO/P (TUBE98) SMD |
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