參數(shù)資料
型號(hào)： MAX7490CEE+
廠商： Maxim Integrated Products
文件頁(yè)數(shù)： 2/18頁(yè)
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(kāi)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： 4.5 V ~ 5.5 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
MAX7490/MAX7491
Dual Universal Switched-Capacitor Filters
10
______________________________________________________________________________________
Table 1. Filter Operating Modes
MODE
LP
HP
BP
N
LP-N*
HP-N*
COMMENTS
1
fCLK/fO ratio is the nominal value. Good for bandpass filters
with identical sections cascaded, higher order Butterworth filters,
high-Q bandpass, low-Q notches.
1B
Same as Mode 1 with fCLK/fO ratios greater than the nominal
value.
2
Combination of Mode 1 and Mode 3; fCLK/fO ratios always
less than the nominal value. Less sensitivity to resistor tolerances
than Mode 3.
2N
Extension of Mode 2 that allows higher frequencies. Highpass
and lowpass outputs are summed with external op amp and
two resistors. Good for lowpass elliptic filters.
3
Adjustable fO above and below the nominal frequency.
Commonly used for multiple-pole Chebyshev filters, all-pole
higher order bandpass, lowpass, and highpass filters.
3A
Extension of Mode 3 that needs an external op amp and
two additional resistors. Commonly used for lowpass or higher
elliptic or Cauer filters.
*
LP-N = lowpass notch, HP-N = highpass notch. Both require an external op amp. See Definition of Terms (Table 2).
Table 2. Definition of Terms
TERM
DEFINITION
fCLK
The clock frequency applied to the switched-capacitor filter.
fO
The center frequency of the 2nd-order complex pole pair, fO, is determined by measuring the peak response
frequency at the bandpass output.
fNOTCH
The frequency of minimum amplitude response at the notch output.
Q
Quality factor, or Q, is the ratio of fO to the -3dB bandwidth of the 2nd-order bandpass filter. Q also determines
the amount of amplitude peaking at the lowpass and highpass outputs, but is not measured at these outputs.
HOBP
The gain in V/V of the bandpass output at f = fO.
HOLP
The gain in V/V of the lowpass output at f
→0Hz.
HOHP
The gain in V/V of the highpass output at f
→fCLK/2.
HON1
The notch output gain as f
→0Hz.
HON2
The notch output gain at f = fCLK/2.
LP-N
A notch output with HON1 > HON2.
HP-N
A notch output with HON1 < HON2.
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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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