MAX7401 Maxim, MAX7401 Datasheet
MAX7401
Manufacturer Part Number
MAX7401
Description
8th-Order / Lowpass / Bessel / Switched-Capacitor Filters
Manufacturer
Maxim
Datasheet
1.MAX7401.pdf
(12 pages)
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MAX7401CPA+
Manufacturer:
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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
19-4788; Rev 1; 6/99
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.
TOP VIEW
COM
GND
V
DD
IN
________________________________________________________________ Maxim Integrated Products
1
2
4
3
General Description
MAX7401
MAX7405
SO/DIP
Pin Configuration
CT2 Base Stations
Speech Processing
Applications
6
8
7
5
CLK
SHDN
OS
OUT
8th-Order, Lowpass, Bessel,
Switched-Capacitor Filters
MAX7401CSA
MAX7401CPA
MAX7401ESA
MAX7401EPA
MAX7405CSA
MAX7405CPA
MAX7405ESA
MAX7405EPA
8th-Order, Lowpass Bessel Filters
Low Noise and Distortion: -82dB THD + Noise
Clock-Tunable Corner Frequency (1Hz to 5kHz)
100:1 Clock-to-Corner Ratio
Single-Supply Operation
Low Power
Available in 8-Pin SO/DIP Packages
Low Output Offset: ±5mV
PART
+5V (MAX7401)
+3V (MAX7405)
2mA (Operating Mode)
0.2µA (Shutdown Mode)
V
SUPPLY
CLOCK
0.1 F
INPUT
Typical Operating Circuit
IN
CLK
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
TEMP. RANGE
0°C to +70°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
Ordering Information
MAX7401
MAX7405
V
GND
DD
SHDN
COM
OUT
OS
8 SO
8 Plastic DIP
8 SO
8 Plastic DIP
8 SO
8 Plastic DIP
8 SO
8 Plastic DIP
PIN-PACKAGE
Features
OUTPUT
0.1 F
1
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