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参数资料
| 型号： | MAX7407CPA+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 3/12页 |
| 文件大小： | 0K |
| 描述： | IC FILTER LOWPASS 8-DIP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 50 |
| 滤波器类型： | 椭圆，低通开关电容器 |
| 频率 - 截止或中心： | 10kHz |
| 滤波器数： | 1 |
| 滤波器阶数： | 8th |
| 电源电压： | 2.7 V ~ 3.6 V |
| 安装类型： | 通孔 |
| 封装/外壳： | 8-DIP（0.300"，7.62mm） |
| 供应商设备封装： | 8-PDIP |
| 包装： | 管件 |
MAX7400/MAX7403/MAX7404/MAX7407
8th-Order, Lowpass, Elliptic,
Switched-Capacitor Filters
______________________________________________________________________________________
11
with VCOM = VDD / 2 (typical), and where (VIN - VCOM)
is lowpass filtered by the SCF, and VOS is added at the
output stage. See the
Electrical Characteristics for
COM and OS input voltage ranges. Changing the volt-
age on COM or OS significantly from midsupply
reduces the filter’s dynamic range.
Power Supplies
The MAX7400/MAX7403 operate from a single +5V
supply. The MAX7404/MAX7407 operate from a single
+3V supply. Bypass VDD to GND with a 0.1F capaci-
tor. 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 equivalent.
For single-supply or dual-supply operation, drive CLK
and SHDN from GND (V- in dual-supply operation) to
VDD. For a ±2.5V supply, use the MAX7400 or MAX7403;
for a ±1.5V supply, use MAX7404 or MAX7407. For ±5V
dual-supply applications, use the MAX291–MAX297.
Input Signal Amplitude Range
The ideal input signal range is determined by observ-
ing the voltage level at which the total harmonic
distortion plus noise (THD+N) is minimized for a given
corner frequency. The
Typical Operating Character-
istics show THD+N response as the input signal’s
peak-to-peak amplitude is varied. These measurements
are made with OS and COM biased at midsupply.
Anti-Aliasing and Post-DAC Filtering
When using the MAX7400/MAX7403/MAX7404/
MAX7407 for anti-aliasing or post-DAC filtering, syn-
chronize the DAC and the filter clocks. If the clocks are
not synchronized, beat frequencies may alias into the
passband.
The high clock-to-corner frequency ratio (100:1) also
eases the requirements of pre- and post-SCF filtering.
At the input, a lowpass filter prevents the aliasing of fre-
quencies around the clock frequency into the pass-
band. At the output, a lowpass filter attenuates the
clock feedthrough.
A high clock-to-corner frequency ratio allows a simple
RC lowpass filter, with the cutoff frequency set above
the SCF corner frequency, to provide input anti-aliasing
and reasonable output clock attenuation.
Harmonic Distortion
Harmonic distortion arises from nonlinearities within the
filter. Such nonlinearities generate harmonics when a
pure sine wave is applied to the filter input. Table 1 lists
typical harmonic distortion values with a 10k
load and
an input signal of 4Vp-p (MAX7400/MAX7403) or 2Vp-p
(MAX7404/MAX7407), at TA = +25°C.
VDD
V+
V-
IN
CLK
GND
INPUT
OUTPUT
OUT
0.1
F
CLOCK
*DRIVE SHDN TO V- FOR LOW-POWER SHUTDOWN MODE.
SHDN
COM
OS
0.1
F
MAX7400
MAX7403
MAX7404
MAX7407
*
V+
V-
Figure 5. Dual-Supply Operation
2nd
-88
100
TYPICAL
HARMONIC
DISTORTION (dB)
1
fC
(kHz)
-89
100
200
1
-84
fIN
(Hz)
200
4th
3rd
5th
-89
500
MAX7400
5
1000
-86
-89
-82
-88
-93
-77
500
MAX7403
5
1000
-87
-91
FILTER
-81
-91
-90
-80
4
VIN
(Vp-p)
4
fCLK
(kHz)
-85
100
1
200
-85
500
MAX7404
5
1000
-86
-85
-82
-84
-86
-81
2
-85
100
1
200
-86
500
MAX7407
5
1000
-86
-85
-82
-86
-85
-84
2
Table 1. Typical Harmonic Distortion
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX7407CPA+ | 功能描述:有源滤波器 8th-Order Lowpass Elliptic Filter RoHS:否 制造商:Maxim Integrated 通道数量:1 截止频率:150 KHz 电源电压-最大:11 V 电源电压-最小:4.74 V 最大工作温度:+ 85 C 安装风格:Through Hole 封装 / 箱体:PDIP N 封装:Tube |
| MAX7407CSA | 功能描述:有源滤波器 RoHS:否 制造商:Maxim Integrated 通道数量:1 截止频率:150 KHz 电源电压-最大:11 V 电源电压-最小:4.74 V 最大工作温度:+ 85 C 安装风格:Through Hole 封装 / 箱体:PDIP N 封装:Tube |
| MAX7407CSA+ | 功能描述:有源滤波器 8th-Order Lowpass Elliptic Filter RoHS:否 制造商:Maxim Integrated 通道数量:1 截止频率:150 KHz 电源电压-最大:11 V 电源电压-最小:4.74 V 最大工作温度:+ 85 C 安装风格:Through Hole 封装 / 箱体:PDIP N 封装:Tube |
| MAX7407CSA+T | 功能描述:有源滤波器 8th-Order Lowpass Elliptic Filter RoHS:否 制造商:Maxim Integrated 通道数量:1 截止频率:150 KHz 电源电压-最大:11 V 电源电压-最小:4.74 V 最大工作温度:+ 85 C 安装风格:Through Hole 封装 / 箱体:PDIP N 封装:Tube |
| MAX7407CSA-T | 功能描述:有源滤波器 RoHS:否 制造商:Maxim Integrated 通道数量:1 截止频率:150 KHz 电源电压-最大:11 V 电源电压-最小:4.74 V 最大工作温度:+ 85 C 安装风格:Through Hole 封装 / 箱体:PDIP N 封装:Tube |
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