參數(shù)資料
型號： MAX7422
廠商： Maxim Integrated Products, Inc.
英文描述： Dual 2-Line To 4-Line Decoders/Demultiplexers 16-CFP -55 to 125
中文描述： 五階、低通、開關(guān)電容濾波器
文件頁數(shù)： 12/14頁
文件大?。?/td> 407K
代理商： MAX7422
M
5th-Order, Lowpass,
Switched-Capacitor Filters
12
______________________________________________________________________________________
and OS. Changing the voltage on COM or OS signifi-
cantly from midsupply reduces the dynamic range.
Power Supplies
The MAX7418–MAX7421 operate from a single +5V
supply and the MAX7422–MAX7425 operate from a sin-
gle +3V supply. Bypass V
DD
to GND with a 0.1μF
capacitor. If dual supplies are required, connect COM
to the system ground and GND to the negative supply.
Figure 5 shows an example of dual-supply operation.
Single-supply and dual-supply performance are equiv-
alent. For either single-supply or dual-supply operation,
drive CLK and
SHDN
from GND (V- in dual supply
operation) to V
DD
. Use the MAX7418–MAX7421 for
±2.5, and use the MAX7422–MAX7425 for ±1.5V. For
±5V dual-supply applications, refer to the MAX291/
MAX292/MAX295/MAX296 and MAX293/MAX294/
MAX297 data sheets.
Input Signal Amplitude Range
The optimal input signal range is determined by observ-
ing the voltage level at which the signal-to-noise plus
distortion (SINAD) ratio is maximized for a given corner
frequency. The
Typical Operating Characteristics
show
the THD + Noise response as the input signal’s peak-to-
peak amplitude is varied.
Anti-Aliasing and Post-DAC Filtering
When using the MAX7418–MAX7425 for anti-aliasing or
post-DAC filtering, synchronize the DAC (or ADC) and
the filter clocks. If the clocks are not synchronized, beat
frequencies may alias into the desired passband.
Harmonic Distortion
Harmonic distortion arises from nonlinearities within the
filter. These nonlinearities generate harmonics when a
pure sine wave is applied to the filter input. Tables 1, 2,
and 3 list typical harmonic distortion values with a 10k
load at T
A
= +25°C.
Table 1. MAX7418/MAX7421/MAX7422/MAX7425 Typical Harmonic Distortion
FILTER
f
IN
(kHz)
V
IN
(Vp-p)
MAX7418
2
MAX7421
2
2
4
2nd
4th
f
CLK
(MHz)
2.2
1.5
2
<-80
<-80
<-80
MAX7422
4
TYPICAL HARMONIC DISTORTION (dB)
<-80
<-80
4
2
2
4.0
2.2
<-80
<-80
<-80
<-80
<-80
<-80
<-80
<-80
<-80
<-80
<-80
3rd
5th
2.2
1.5
<-80
<-80
<-80
4
<-80
<-80
MAX7425
2
2
4.0
2.2
<-80
<-80
<-80
<-80
<-80
<-80
<-80
<-80
<-80
<-80
<-80
V
DD
V+
V-
IN
CLK
GND
INPUT
OUTPUT
OUT
COM
0.1
μ
F
CLOCK
*CONNECT SHDN TO V- FOR LOW-POWER SHUTDOWN MODE.
SHDN
OS
0.1
μ
F
MAX7418
–
MAX7425
*
V+
V-
Figure 5. Dual-Supply Operation
相關(guān)PDF資料
PDF描述
MAX7423 Dual 2-Line To 4-Line Decoders/Demultiplexers 16-CDIP -55 to 125
MAX7424 5th-Order, Lowpass, Switched-Capacitor Filters
MAX7424EUA Dual 2-Line To 4-Line Decoders/Demultiplexers 16-CDIP -55 to 125
MAX7425 Dual 2-Line To 4-Line Decoders/Demultiplexers 16-CFP -55 to 125
MAX7424CUA 5th-Order, Lowpass, Switched-Capacitor Filters
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX7422CUA 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
MAX7422CUA+ 功能描述:有源濾波器 5th-Order Lowpass Elliptic Filter 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
MAX7422CUA+T 功能描述:有源濾波器 5th-Order Lowpass Elliptic Filter 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
MAX7422CUA-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
MAX7422EUA 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
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