Product Summary

The MAX7426/MAX7427 5th-order, lowpass, elliptic,switched-capacitor filters (SCFs) operate from a single+5V (MAX7426) or +3V (MAX7427) supply. The devicesdraw only 0.8mA of supply current and allow corner fre-quencies from 1Hz to 12kHz, making them ideal forlow-power post-DAC filtering and anti-aliasing applica-tions. They can be put into a low-power mode, reducingsupply current to 0.2μA.Two clocking options are available: self-clocking (throughthe use of an external capacitor) or external clocking fortighter cutoff-frequency control. An offset-adjust pinallows for adjustment of the DC output level.The MAX7426/MAX7427 deliver 37dB of stopbandrejection and a sharp rolloff with a transition ratio of1.25. Their fixed response limits the design task toselecting a clock frequency.

Parametrics

Specifications of MAX7427CUA+
Filter Type Elliptic, Lowpass Switched Capacitor Frequency - Cutoff Or Center 12kHz
Number Of Filters 1 Max-order 5th
Voltage - Supply 2.7 V ~ 3.6 V Mounting Type Surface Mount
Package / Case 8-MSOP, Micro8?, 8-uMAX, 8-uSOP, Lead Free Status / RoHS Status Lead free / RoHS Compliant

Features

5th-Order, Elliptic Lowpass Filters 

 Low Noise and Distortion: -80dB THD + Noise 

 Clock-Tunable Corner Frequency (1Hz to 12kHz) 

Single-Supply Operation +5V (MAX7426) +3V (MAX7427) 

 Low Power 0.8mA (Operating Mode) 0.2μA (Shutdown Mode) 

Available in 8-Pin μMAX/PDIP Packages o Low Output Offset: ±4mV

Diagrams

Image Part No Mfg Description Data Sheet Download Pricing
(USD)
Quantity
MAX7427CUA+
MAX7427CUA+

Maxim Integrated Products

Active Filters 5th-Order Lowpass Elliptic Filter

Data Sheet

0-1: $2.02
1-25: $1.36
25-50: $0.98
50-100: $0.97
MAX7427CUA+T
MAX7427CUA+T

Maxim Integrated Products

Active Filters 5th-Order Lowpass Elliptic Filter

Data Sheet

0-1980: $0.91
1980-2500: $0.91