MAX7480 Maxim, MAX7480 Datasheet
MAX7480
Manufacturer Part Number
MAX7480
Description
8th-Order / Lowpass / Butterworth / Switched-Capacitor Filter
Manufacturer
Maxim
Datasheet
1.MAX7480.pdf
(8 pages)
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The MAX7480 8th-order, lowpass, Butterworth,
switched-capacitor filter (SCF) operates from a single
+5V supply. The device draws only 2.9mA of supply
current and allows corner frequencies from 1Hz to
2kHz, making it ideal for low-power post-DAC filtering
and anti-aliasing applications. The MAX7480 features a
shutdown mode, which reduces the 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 MAX7480 Butterworth filter provides a maximally
flat passband response. The fixed response simplifies
the design task to selecting a clock frequency.
19-1416; Rev 0; 1/99
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
ADC Anti-Aliasing
Post-DAC Filtering
COM
GND
V
DD
IN
________________________________________________________________ Maxim Integrated Products
1
2
4
3
General Description
MAX7480
SO/DIP
Pin Configuration
8th-Order, Lowpass, Butterworth,
Applications
6
8
7
5
CLK
SHDN
OS
OUT
Switched-Capacitor Filter
MAX7480ESA
MAX7480EPA
8th-Order, Lowpass Butterworth Filter
Low Noise and Distortion: -73dB THD + Noise
Clock-Tunable Corner Frequency (1Hz to 2kHz)
100:1 Clock-to-Corner Ratio
+5V Single-Supply Operation
Low Power
Available in 8-Pin SO/DIP Package
Low Output Offset: ±5mV
PART
2.9mA (Operating Mode)
0.2µA (Shutdown Mode)
V
SUPPLY
CLOCK
0.1 F
INPUT
Typical Operating Circuit
-40°C to +85°C
-40°C to +85°C
IN
CLK
TEMP. RANGE
Ordering Information
MAX7480
V
GND
DD
SHDN
COM
OUT
OS
8 SO
8 Plastic DIP
PIN-PACKAGE
Features
OUTPUT
0.1 F
1
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