MAX7409:5th-Order, Lowpass, Switched-Capacitor Filters

Smallest, Low-Power 5th-Order Filters

The MAX7409/MAX7410/MAX7413/MAX7414 5th-order, lowpass, switched-capacitor filters (SCFs) operate from a single +5V (MAX7409/MAX7410) or +3V (MAX7413/ MAX7414) supply. These devices draw only 1.2mA of supply current and allow corner frequencies from 1Hz to 15kHz, making them ideal for low-power post-DAC filtering and anti-aliasing applications. They feature a shutdown mode, which reduces the 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 MAX7409/MAX7413 Bessel filters provide low overshoot and fast settling, while the MAX7410/MAX7414 Butterworth filters provide a maximally flat passband response. Their fixed response simplifies the design task to selecting a clock frequency.

Key Features
  • 5th-Order Lowpass Filters
    • Bessel Response (MAX7409/MAX7413)
    • Butterworth Response (MAX7410/MAX7414)
  • Clock-Tunable Corner Frequency (1Hz to 15kHz)
  • Single-Supply Operation
    • +5V (MAX7409/MAX7410)
    • +3V (MAX7413/MAX7414)
  • Low Power
    • 1.2mA (operating mode)
    • 0.2µA (shutdown mode)
  • Available in 8-Pin µMAX®/DIP Packages
  • Low Output Offset: ±4mV
  • Single 5th-order, Bessel and Butterworth switched-capacitor filters. 15kHz maximum F (c)
MAX7409, MAX7410, MAX7413, MAX7414: Typical Operating Circuit
MAX7409, MAX7410, MAX7413, MAX7414: Typical Operating Circuit
Applications/Uses
  • ADC Anti-Aliasing
  • Air-Bag Electronics
  • CT2 Base Stations
  • DAC Post-Filtering
  • Speech Processing
DataSheet
titleDownload file
MAX7409-MAX7414 Data SheetMAX7409-MAX7414.pdf
Parametrics
Part NumberFilter SectionsOrder Per Filter SectionFilter ClassFilter TypeFilter CharacteristicProgram MethodLowest Cutoff
(Hz)
Highest Cutoff
(kHz)
VSUPPLY
(V)
Design ToolsOper. Temp.
(°C)
Package/PinsBudgetary
Price
maxminSee Notes
MAX740915Switched CapLowpassBesselClock1155EE-Sim-40 to +85
0 to +70
µMAX/8
PDIP(N)/8
$2.97 @1k
MAX7410Butterworth5µMAX/8
PDIP(N)/8
$2.27 @1k
MAX7413Bessel3µMAX/8
PDIP(N)/8
$1.93 @1k
MAX7414Butterworth3µMAX/8
PDIP(N)/8
$2.35 @1k
Design kits & evaluation modules
Related Products
  • MAX7480:8th-Order, Lowpass, Butterworth, Switched-Capacitor Filter
  • MAX7408:5th Order, Lowpass, Elliptic, Switched-Capacitor Filters
  • MAX7411:5th Order, Lowpass, Elliptic, Switched-Capacitor Filters
  • MAX7405:8th-Order, Lowpass, Bessel, Switched-Capacitor Filters
  • MAX7415:5th Order, Lowpass, Elliptic, Switched-Capacitor Filters
  • MAX7401:8th-Order, Lowpass, Bessel, Switched-Capacitor Filters
  • MAX7412:5th Order, Lowpass, Elliptic, Switched-Capacitor Filters
Ordering Information
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX7409CPANo Longer AvailableMAX7409CPA+PDIP(N),;8 pin;79.7 mm²0°C to +70°CNo
MAX7409CPA+ActivePDIP(N),;8 pin;79.7 mm²0°C to +70°CLead Free
MAX7409CUANo Longer AvailableMAX7409CUA+µMAX,;8 pin;15.6 mm²0°C to +70°CNo
MAX7409CUA+ActiveµMAX,;8 pin;15.6 mm²0°C to +70°CLead Free
MAX7409CUA+TActiveµMAX,;8 pin;15.6 mm²0°C to +70°CLead Free
MAX7409CUA-TNo Longer AvailableMAX7409CUA+TµMAX,;8 pin;15.6 mm²0°C to +70°CNo
MAX7409EPANo Longer AvailableMAX7409EPA+PDIP(N),;8 pin;79.7 mm²-40°C to +85°CNo
MAX7409EPA+ActivePDIP(N),;8 pin;79.7 mm²-40°C to +85°CLead Free
MAX7409EUANo Longer AvailableMAX7409EUA+µMAX,;8 pin;15.6 mm²-40°C to +85°CNo
MAX7409EUA+ActiveµMAX,;8 pin;15.6 mm²-40°C to +85°CLead Free
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX7409EUA+TActiveµMAX,;8 pin;15.6 mm²-40°C to +85°CLead Free
MAX7409EUA-TNo Longer AvailableMAX7409EUA+TµMAX,;8 pin;15.6 mm²-40°C to +85°CNo
MAX7409-MAX7414.pdf MAX7414
Lowpass Filter Has Improved Step Response MAX7409
A Filter Primer MAX7491
MAX7409-MAX7414.pdf MAX7414