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What is MAX7401?

This electronic component, produced by the manufacturer "Maxim Integrated", performs the same function as "8th-Order / Lowpass / Bessel / Switched-Capacitor Filters".


MAX7401 Datasheet PDF - Maxim Integrated

Part Number MAX7401
Description 8th-Order / Lowpass / Bessel / Switched-Capacitor Filters
Manufacturers Maxim Integrated 
Logo Maxim Integrated Logo 


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19-4788; Rev 1; 6/99
8th-Order, Lowpass, Bessel,
Switched-Capacitor Filters
General Description
The MAX7401/MAX7405 8th-order, lowpass, Bessel,
switched-capacitor filters (SCFs) operate from a single
+5V (MAX7401) or +3V (MAX7405) supply. These
devices draw only 2mA of supply current and allow cor-
ner frequencies from 1Hz to 5kHz, making them ideal
for low-power post-DAC filtering and anti-aliasing appli-
cations. They feature a shutdown mode that reduces
supply current to 0.2µA.
Two clocking options are available on these devices:
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 out-
put level.
The MAX7401/MAX7405 Bessel filters provide low over-
shoot and fast settling. Their fixed response simplifies
the design task to selecting a clock frequency.
ADC Anti-Aliasing
Post-DAC Filtering
Air-Bag Electronics
Applications
CT2 Base Stations
Speech Processing
TOP VIEW
Pin Configuration
Features
o 8th-Order, Lowpass Bessel Filters
o Low Noise and Distortion: -82dB THD + Noise
o Clock-Tunable Corner Frequency (1Hz to 5kHz)
o 100:1 Clock-to-Corner Ratio
o Single-Supply Operation
+5V (MAX7401)
+3V (MAX7405)
o Low Power
2mA (Operating Mode)
0.2µA (Shutdown Mode)
o Available in 8-Pin SO/DIP Packages
o Low Output Offset: ±5mV
PART
MAX7401CSA
MAX7401CPA
MAX7401ESA
MAX7401EPA
MAX7405CSA
MAX7405CPA
MAX7405ESA
MAX7405EPA
Ordering Information
TEMP. RANGE
0°C to +70°C
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
0°C to +70°C
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
8 SO
8 Plastic DIP
8 SO
8 Plastic DIP
8 SO
8 Plastic DIP
8 SO
8 Plastic DIP
COM 1
IN 2
GND 3
VDD 4
MAX7401
MAX7405
8 CLK
7 SHDN
6 OS
5 OUT
SO/DIP
Typical Operating Circuit
VSUPPLY
0.1µF
INPUT
CLOCK
VDD SHDN
IN OUT
MAX7401
MAX7405
CLK COM
OS
GND
OUTPUT
0.1µF
________________________________________________________________ Maxim Integrated Products 1
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.

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MAX7401 equivalent
8th-Order, Lowpass, Bessel,
Switched-Capacitor Filters
Typical Operating Characteristics
(VDD = +5V for MAX7401, VDD = +3V for MAX7405; fCLK = 100kHz; SHDN = VDD; VCOM = VOS = VDD / 2; TA = +25°C; unless otherwise
noted.)
10
0
-10
-20
-30
-40
-50
-60
-70
0
FREQUENCY RESPONSE
fC = 1kHz
1234
INPUT FREQUENCY (kHz)
5
PASSBAND FREQUENCY RESPONSE
0.5
fC = 1kHz
0
-0.5
-1.0
-1.5
-2.0
-2.5
-3.0
-3.5
0
202 404 606 808
INPUT FREQUENCY (Hz)
1010
0
-50
-100
-150
-200
-250
-300
-350
-400
0
PHASE RESPONSE
fC = 1kHz
400 800 1200 1600 2000
INPUT FREQUENCY (Hz)
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
2.5
NO LOAD
2.4
2.3
2.2
2.1
MAX7405
2.0
MAX7401
1.9
1.8
1.7
1.6
1.5
2.5
3.0 3.5 4.0 4.5 5.0
SUPPLY VOLTAGE (V)
5.5
OFFSET VOLTAGE vs. TEMPERATURE
1.0
VIN = VCOM = VDD / 2
0.5
SUPPLY CURRENT
vs. TEMPERATURE
2.03
NO LOAD
2.02
2.01
MAX7401
2.00
1.99
MAX7405
1.98
1.97
-40 -20
0 20 40 60
TEMPERATURE (°C)
80 100
10,000
INTERNAL OSCILLATOR FREQUENCY
vs. COSC CAPACITANCE
1000
0 100
-0.5 10
-1.0 1
-1.5
-40 -20
0 20 40 60
TEMPERATURE (°C)
80 100
0.1
0.01
0.1 1 10 100
COSC CAPACITANCE (nF)
1000
OFFSET VOLTAGE
vs. SUPPLY VOLTAGE
20
VIN = VCOM = VDD / 2
15
10
5
MAX7405
0
MAX7401
-5
-10
-15
-20
2.5
3.0 3.5 4.0 4.5 5.0
SUPPLY VOLTAGE (V)
5.5
NORMALIZED OSCILLATOR FREQUENCY
vs. SUPPLY VOLTAGE
1.20
1.15 COSC = 390pF
1.10
1.05 MAX7405
1.00
0.95 MAX7401
0.90
0.85
0.80
2.5
3.0 3.5 4.0 4.5 5.0
SUPPLY VOLTAGE (V)
5.5
_______________________________________________________________________________________ 5


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Part Details

On this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for MAX7401 electronic component.


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