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| 型號： | AD8028ARZ-REEL |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 16/25頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC OPAMP R-R DUAL LDIST 8SOIC |
| 標(biāo)準(zhǔn)包裝： | 2,500 |
| 放大器類型： | 電壓反饋 |
| 電路數(shù)： | 2 |
| 輸出類型： | 滿擺幅 |
| 轉(zhuǎn)換速率： | 100 V/µs |
| -3db帶寬： | 190MHz |
| 電流 - 輸入偏壓： | 4µA |
| 電壓 - 輸入偏移： | 200µV |
| 電流 - 電源： | 6.5mA |
| 電流 - 輸出 / 通道： | 120mA |
| 電壓 - 電源，單路/雙路(±)： | 2.7 V ~ 12 V，±1.35 V ~ 6 V |
| 工作溫度： | -40°C ~ 125°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 8-SOIC（0.154"，3.90mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 8-SO |
| 包裝： | 帶卷 (TR) |
AD8027/AD8028
Rev. C | Page 22 of 24
BAND-PASS FILTER
In communication systems, active filters are used extensively in
signal processing. The AD8027/AD8028 are excellent choices
for active filter applications. In realizing this filter, it is impor-
tant that the amplifier have a large signal bandwidth of at least
10× the center frequency, fO. Otherwise, a phase shift can occur
in the amplifier, causing instability and oscillations.
In Figure 62, the AD8027/AD8028 part is configured as a
1 MHz band-pass filter. The target specifications are fO = 1 MHz
and a 3 dB pass band of 500 kHz. To start the design, select fO,
Q, C1, and R4. Then use the following equations to calculate the
remaining variables:
(MHz)
Pass
Band
f
Q
O
=
k = 2πfOC1
C2 = 0.5C1
R1 = 2/k, R2 = 2/(3k), R3 = 4/k
H = 1/3(6.5 – 1/Q)
R5 = R4/(H – 1)
+5
–5
C3
0.1
μF
C4
0.1
μF
R4
523
Ω
R5
523
Ω
C2
500pF
C1
1000pF
R3
634
Ω
VOUT
R1
316
Ω
R2
105
Ω
VIN
SELECT
AD8027/
AD8028
+
–
03327-A-061
Figure 62. Band-Pass Filter Schematic
The test data shown in Figure 63 indicates that this design
yields a filter response with a center frequency of fO = 1 MHz,
and a bandwidth of 450 kHz.
0.1
CH1 S21 LOG
5dB/REF 6.342dB
1:6.3348dB 1.00 000MHz
1
FREQUENCY – MHz
10
1
03327-A-062
Figure 63. Band-Pass Filter Response
DESIGN TOOLS AND TECHNICAL SUPPORT
Analog Devices, Inc. (ADI) is committed to simplifying the
design process by providing technical support and online
design tools. ADI offers technical support via free evaluation
boards, sample ICs, interactive evaluation tools, data sheets,
spice models, application notes, and phone and email support
available at www. analog.com.
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| AD8028ARZ-REEL7 | 功能描述:IC OPAMP R-R DUAL LDIST 8SOIC RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標(biāo)準(zhǔn)包裝:50 系列:LinCMOS™ 放大器類型:通用 電路數(shù):4 輸出類型:- 轉(zhuǎn)換速率:0.05 V/µs 增益帶寬積:110kHz -3db帶寬:- 電流 - 輸入偏壓:0.7pA 電壓 - 輸入偏移:210µV 電流 - 電源:57µA 電流 - 輸出 / 通道:30mA 電壓 - 電源，單路/雙路(±):3 V ~ 16 V，±1.5 V ~ 8 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:14-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:14-SOIC 包裝:管件 產(chǎn)品目錄頁面:865 (CN2011-ZH PDF) 其它名稱:296-1834296-1834-5 |
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