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Product Detailed Parameters
- Description：IC FILTER 15KHZ LOWPASS 8DIP
- Series：-
- Mfr：Analog Devices Inc./Maxim Integrated
- Package：Tube
- Filter Type：Elliptic, Low Pass Switched Capacitor
- Frequency - Cutoff or Center：15kHz
- Number of Filters：1
- Filter Order：5th
- Voltage - Supply：2.7V ~ 3.6V
- Mounting Type：Through Hole
- Package / Case：8-DIP (0.300", 7.62mm)
- Supplier Device Package：8-PDIP
- Grade：-
- Qualification：-
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Overview
The MAX7412CPA is a fifth-order, lowpass, elliptic switched-capacitor filter IC manufactured by Analog Devices Inc. (formerly Maxim Integrated). It operates from a single +3V supply and draws 1.2mA of supply current in normal mode, reducing to 0.2µA in shutdown mode. The device features a clock-tunable corner frequency ranging from 1Hz to 15kHz with a 100:1 clock-to-corner ratio. It provides 53dB of stopband rejection and a transition ratio of 1.6. The component is housed in an 8-pin plastic DIP package.
Feature Summary
- Fifth-order elliptic lowpass filter response
- Low noise and distortion performance
- Clock-tunable corner frequency capability
- Single-supply operation
Applications
- ADC anti-aliasing
- Post-DAC filtering
- Speech processing
Procurement Notes
Verify the manufacturer designation as Analog Devices Inc. or Maxim Integrated on the datasheet header. Confirm the specific ordering suffix 'CPA' corresponds to the 8-PDIP package and commercial temperature range. Ensure the part number matches the exact electrical specifications for the +3V supply variant within the MAX74xx family.
Selection Notes
Select this component when a sharp rolloff with high stopband rejection is required for single-supply applications. The fixed transition ratio of 1.6 distinguishes it from the MAX7415. Verify that the system can provide a stable clock signal between 100kHz and 1.5MHz to achieve the desired 1Hz to 15kHz corner frequency range.
Part Context
This device belongs to the MAX7408/MAX7411/MAX7412/MAX7415 family of fifth-order elliptic switched-capacitor filters. The MAX7412 is specifically designed for +3V single-supply systems, whereas the MAX7408 operates at +5V. Both share the same 1.6 transition ratio but differ in operating voltage requirements.
Replacement Considerations
The MAX7408 serves as a direct functional substitute if the application supports a +5V supply instead of +3V. Other family members like the MAX7411 and MAX7415 offer different transition ratios and should be evaluated based on specific rolloff requirements.
