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參數(shù)資料
| 型號： | MAX7491CEE+ |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 8/18頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC FILTER SW CAP DUAL 16-QSOP |
| 產(chǎn)品培訓(xùn)模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標(biāo)準(zhǔn)包裝： | 100 |
| 濾波器類型： | 通用開關(guān)電容器 |
| 頻率 - 截止或中心： | 40kHz |
| 濾波器數(shù)： | 2 |
| 濾波器階數(shù)： | 2nd |
| 電源電壓： | 2.7 V ~ 3.6 V |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 16-SSOP（0.154"，3.90mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 16-QSOP |
| 包裝： | 管件 |
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, place the
section with the highest Q first for lower output noise.
Multiple Filter Stages
In some designs, such as very narrow band filters, or in
modes where fO cannot be tuned with resistors, several
2nd-order sections with identical fO may be cascaded
without multiple feedback. The total Q of the resultant
filter (QT) is:
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 identical
2nd-order sections. B is the bandwidth of each section.
Chip Information
PROCESS: BiCMOS
Total Q
Q
T
N
/
//
=
()
21
11 2
MAX7490/MAX7491
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 |
|---|---|
| MAX7491CEE+ | 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 |
| MAX7491CEE+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 |
| MAX7491CEE-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 |
| MAX7491EEE | 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 |
| MAX7491EEE+ | 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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