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參數(shù)資料
| 型號(hào)： | MAX7490CEE |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 運(yùn)動(dòng)控制電子 |
| 英文描述： | Dual Universal Switched-Capacitor Filters |
| 中文描述： | DUAL SWITCHED CAPACITOR FILTER, BUTTERWORTH/BESSEL/ELLIPTIC, UNIVERSAL, PDSO16 |
| 封裝： | 0.150 INCH, 0.025 INCH PITCH, QSOP-16 |
| 文件頁(yè)數(shù)： | 16/18頁(yè) |
| 文件大?。?/td> | 343K |
| 代理商： | MAX7490CEE |
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Wideband Noise
The wideband noise of the filter is the total RMS value
of the device
’
s noise spectral density and is used to
determine the operating SNR. Most of its frequency
contents lie within the filter
’
s passband and cannot be
reduced with postfiltering. The total noise depends
mainly on the Q of each filter section and the cascade
sequence. Therefore, in multistage filters, the section
with the highest Q should be placed first for lower out-
put noise.
Multiple Filter Stages
In some designs, such as very narrow band filters, or in
modes where f
O
cannot be tuned with resistors, several
2nd-order sections with identical f
O
may be cascaded
without multiple feedback. The total Q of the resultant
filter (Q
T
) is:
Total Q
T
= Q / (2
N
- 1)
1/2
Q is the Q of each individual filter section, and N is the
number of 2nd-order sections. In Table 5, the total Q
and total bandwidth (BW) are listed for up to five identi-
cal 2nd-order sections. B is the bandwidth of each sec-
tion.
Chip Information
TRANSISTOR COUNT: 1439
TECHNOLOGY: BiCMOS
M
Dual Universal Switched-Capacitor Filters
16
______________________________________________________________________________________
TOTAL SECTIONS
TOTAL BW
TOTAL Q
1
1.000 B
1.00 Q
2
0.644 B
1.55 Q
3
0.510 B
1.96 Q
4
0.435 B
2.30 Q
5
0.386 B
2.60 Q
Table 5. Cascading Identical Bandpass
Filter Sections
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX7490CEE+ | 功能描述:有源濾波器 Dual Universal Switched-Cap RoHS:否 制造商:Maxim Integrated 通道數(shù)量:1 截止頻率:150 KHz 電源電壓-最大:11 V 電源電壓-最小:4.74 V 最大工作溫度:+ 85 C 安裝風(fēng)格:Through Hole 封裝 / 箱體:PDIP N 封裝:Tube |
| MAX7490CEE+T | 功能描述:有源濾波器 Dual Universal Switched-Cap RoHS:否 制造商:Maxim Integrated 通道數(shù)量:1 截止頻率:150 KHz 電源電壓-最大:11 V 電源電壓-最小:4.74 V 最大工作溫度:+ 85 C 安裝風(fēng)格:Through Hole 封裝 / 箱體:PDIP N 封裝:Tube |
| MAX7490CEE-T | 功能描述:有源濾波器 RoHS:否 制造商:Maxim Integrated 通道數(shù)量:1 截止頻率:150 KHz 電源電壓-最大:11 V 電源電壓-最小:4.74 V 最大工作溫度:+ 85 C 安裝風(fēng)格:Through Hole 封裝 / 箱體:PDIP N 封裝:Tube |
| MAX7490EEE | 功能描述:有源濾波器 RoHS:否 制造商:Maxim Integrated 通道數(shù)量:1 截止頻率:150 KHz 電源電壓-最大:11 V 電源電壓-最小:4.74 V 最大工作溫度:+ 85 C 安裝風(fēng)格:Through Hole 封裝 / 箱體:PDIP N 封裝:Tube |
| MAX7490EEE+ | 功能描述:有源濾波器 Dual Universal Switched-Cap RoHS:否 制造商:Maxim Integrated 通道數(shù)量:1 截止頻率:150 KHz 電源電壓-最大:11 V 電源電壓-最小:4.74 V 最大工作溫度:+ 85 C 安裝風(fēng)格:Through Hole 封裝 / 箱體:PDIP N 封裝:Tube |
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