Create a design and simulate using EE-Sim tools: MAX7405CPA
The MAX7401/MAX7405CPA 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 corner frequencies from 1Hz to 5kHz, making 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 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 output level. The MAX7401/MAX7405CPA Bessel filters provide low overshoot and fast settling. Their fixed response simplifies the design task to selecting a clock frequency.
characterization
- 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
- +5V (MAX7401)
- +3V (MAX7405)
- Low Power
- 2mA (Operating Mode)
- 0.2μA (Shutdown Mode)
- Available in 8-Pin SO/DIP Packages
- Low Output Offset: ±5mV
Application Areas
- ADC Anti-Aliasing
- Air-Bag Electronics
- CT2 Base Stations
- Post-DAC Filtering
- Speech Processing
(Product Image: Diagram)
Technical Parameters
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Number of Channels
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1
-
Cutoff Frequency
-
5 kHz
-
Supply Voltage Max
-
3.6 V
-
Supply Voltage Min
-
2.7 V
-
Maximum Operating Temperature
-
+ 70 C
-
Mounting Style
-
Through Hole
-
Package / Case
-
PDIP N-8
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Minimum Operating Temperature
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0 C
-
Operating Supply Voltage
-
3 V
MAX7405CPA Datasheet
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MAX7405 data sheet for guidance
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