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MAX7418 Datasheet(数据表) 1 Page - Maxim Integrated Products

部件型号  MAX7418
说明  5th-Order, Lowpass, Switched-Capacitor Filters
下载  14 Pages
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制造商  MAXIM [Maxim Integrated Products]
网页  http://www.maxim-ic.com
标志 MAXIM - Maxim Integrated Products

MAX7418 Datasheet(HTML) 1 Page - Maxim Integrated Products

  MAX7418 数据表 HTML 1Page - Maxim Integrated Products MAX7418 数据表 HTML 2Page - Maxim Integrated Products MAX7418 数据表 HTML 3Page - Maxim Integrated Products MAX7418 数据表 HTML 4Page - Maxim Integrated Products MAX7418 数据表 HTML 5Page - Maxim Integrated Products MAX7418 数据表 HTML 6Page - Maxim Integrated Products MAX7418 数据表 HTML 7Page - Maxim Integrated Products MAX7418 数据表 HTML 8Page - Maxim Integrated Products MAX7418 数据表 HTML 9Page - Maxim Integrated Products Next Button
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For price, delivery, and to place orders, please contact Maxim Distribution at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
General Description
The MAX7418–MAX7425 5th-order, low-pass, switched-
capacitor filters (SCFs) operate from a single +5V
(MAX7418–MAX7421) or +3V (MAX7422–MAX7425)
supply. These devices draw only 3mA of supply current
and allow corner frequencies from 1Hz to 45kHz, mak-
ing them ideal for low-power post-DAC filtering and anti-
aliasing applications. They feature a shutdown mode
that reduces supply current to 0.2µA.
Two clocking options are available: self-clocking
(through the use of an external capacitor), or external
clocking for tighter corner-frequency control. An offset
adjust pin allows for adjustment of the DC output level.
The MAX7418/MAX7422 deliver 53dB of stopband
rejection and a sharp rolloff with a 1.6 transition ratio.
The MAX7421/MAX7425 achieve a sharper rolloff with a
1.25 transition ratio while still providing 37dB of stop-
band rejection. The MAX7419/MAX7423 Bessel filters
provide low overshoot and fast settling, and the
MAX7420/MAX7424 Butterworth filters provide a maxi-
mally flat passband response. Their fixed response sim-
plifies the design task of selecting a clock frequency.
Applications
ADC Anti-Aliasing
CT2 Base Stations
DAC Postfiltering
Speech Processing
Features
o 5th-Order, Lowpass Filters
Elliptic Response (MAX7418/MAX7421/
MAX7422/MAX7425)
Bessel Response (MAX7419/MAX7423)
Butterworth Response (MAX7420/MAX7424)
o Clock-Turnable Corner Frequency (1Hz to 45kHz)
o Single-Supply Operation
+5V (MAX7418–MAX7421)
+3V (MAX7422–MAX7425)
o Low Power
3mA (Operating Mode)
0.2µA (Shutdown Mode)
o Available in 8-Pin µMAX Package
o Low Output Offset: ±4mV
5th-Order, Lowpass,
Switched-Capacitor Filters
________________________________________________________________ Maxim Integrated Products
1
OS
OUT
VDD
1
2
8
7
CLK
SHDN
IN
GND
COM
µMAX
TOP VIEW
3
4
6
5
MAX7418–
MAX7425
VDD
IN
CLK
OUT
GND
INPUT
0.1
µF
0.1
µF
CLOCK
SHDN
OUTPUT
VSUPPLY
COM
OS
MAX7418–
MAX7425
Typical Operating Circuit
19-1821; Rev 0; 11/00
Pin Configuration
Ordering Information
Selector Guide
PART
MAX7418EUA
-40°C to +85°C
TEMP. RANGE
PIN-PACKAGE
8 µMAX
Selector Guide continued at end of data sheet.
Ordering Information continued at end of data sheet.
MAX7418CUA
0°C to +70°C
8 µMAX
MAX7419CUA
0°C to +70°C
8 µMAX
MAX7419EUA
-40°C to +85°C
8 µMAX
MAX7420CUA
0°C to +70°C
8 µMAX
MAX7420EUA
-40°C to +85°C
8 µMAX
MAX7421CUA
0°C to +70°C
8 µMAX
MAX7421EUA
-40°C to +85°C
8 µMAX
PART
FILTER RESPONSE
OPERATING
VOLTAGE (V)
MAX7418
r = 1.6
+5
MAX7419
Bessel
+5
MAX7420
Butterworth
+5
MAX7421
r = 1.25
+5




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