MAX7408:5th Order, Lowpass, Elliptic, Switched-Capacitor Filters

Smallest, Low-Power 5th-Order Filters

The MAX7408/MAX7411/MAX7412/MAX7415 5th-order, lowpass, elliptic, switched-capacitor filters (SCFs) operate from a single +5V (MAX7408/MAX7411) or +3V (MAX7412/MAX7415) supply. The 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 can be put into a low-power mode, reducing supply current to 0.2µA. Two clocking options are available: self-clocking (through the use of an external capacitor) or external clocking for tighter cutoff-frequency control. An offset-adjust pin allows for adjustment of the DC output level. The MAX7408/MAX7412 deliver 53dB of stopband rejection and a sharp rolloff with a transition ratio of 1.6. The MAX7411/MAX7415 achieve a sharper rolloff with a transition ratio of 1.25 while still providing 37dB of stop-band rejection. Their fixed response limits the design task to selecting a clock frequency.

Key Features
  • 5th-Order, Elliptic Lowpass Filters
  • Low Noise and Distortion: -80dB THD + Noise
  • Clock-Tunable Corner Frequency (1Hz to 15kHz)
  • Single-Supply Operation
    • +5V (MAX7408/MAX7411)
    • +3V (MAX7412/MAX7415)
  • Low Power
    • 1.2mA (operating mode)
    • 0.2µA (shutdown mode)
  • Available in 8-Pin µMAX®/DIP Packages
  • Low Output Offset: ±4mV
MAX7408, MAX7411, MAX7412, MAX7415: Typical Operating Circuit
MAX7408, MAX7411, MAX7412, MAX7415: Typical Operating Circuit
Applications/Uses
  • ADC Anti-Aliasing
  • CT2 Base Stations
  • Post-DAC Filtering
  • Speech Processing
DataSheet
titleDownload file
MAX7408-MAX7415 Data SheetMAX7408-MAX7415.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
MAX740815Switched CapLowpassEllipticClock1155EE-Sim-40 to +85
0 to +70
µMAX/8
PDIP(N)/8
$2.25 @1k
MAX74115µMAX/8
PDIP(N)/8
$2.13 @1k
MAX74123µMAX/8
PDIP(N)/8
$3.06 @1k
MAX74153µMAX/8
PDIP(N)/8
$2.03 @1k
Design kits & evaluation modules
Quality and Environmental Data
Related Products
  • MAX7407:8th-Order, Lowpass, Elliptic, Switched-Capacitor Filters
  • MAX7400:8th-Order, Lowpass, Elliptic, Switched-Capacitor Filters
  • MAX7403:8th-Order, Lowpass, Elliptic, Switched-Capacitor Filters
  • MAX7404:8th-Order, Lowpass, Elliptic, Switched-Capacitor Filters
  • MAX294:8th-Order, Lowpass, Elliptic, Switched-Capacitor Filters
  • MAX297:8th-Order, Lowpass, Elliptic, Switched-Capacitor Filters
  • MAX293:8th-Order, Lowpass, Elliptic, Switched-Capacitor Filters
Ordering Information
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX7408CPANo Longer AvailableMAX7408CPA+PDIP(N),;8 pin;79.7 mm²0°C to +70°CNo
MAX7408CPA+ActivePDIP(N),;8 pin;79.7 mm²0°C to +70°CLead Free
MAX7408CUANo Longer AvailableMAX7408CUA+µMAX,;8 pin;15.6 mm²0°C to +70°CNo
MAX7408CUA+ActiveµMAX,;8 pin;15.6 mm²0°C to +70°CLead Free
MAX7408CUA+TActiveµMAX,;8 pin;15.6 mm²0°C to +70°CLead Free
MAX7408CUA-TNo Longer AvailableMAX7408CUA+TµMAX,;8 pin;15.6 mm²0°C to +70°CNo
MAX7408EPANo Longer AvailableMAX7408EPA+PDIP(N),;8 pin;79.7 mm²-40°C to +85°CNo
MAX7408EPA+ActivePDIP(N),;8 pin;79.7 mm²-40°C to +85°CLead Free
MAX7408EUANo Longer AvailableMAX7408EUA+µMAX,;8 pin;15.6 mm²-40°C to +85°CNo
MAX7408EUA+ActiveµMAX,;8 pin;15.6 mm²-40°C to +85°CLead Free
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX7408EUA+TActiveµMAX,;8 pin;15.6 mm²-40°C to +85°CLead Free
MAX7408EUA-TNo Longer AvailableMAX7408EUA+TµMAX,;8 pin;15.6 mm²-40°C to +85°CNo
MAX7408EUA/GG8ActiveµMAX,;8 pin;15.6 mm²-40°C to +85°CNo
MAX7408EUA/GG8-TNo Longer AvailableMAX7408EUA+uMAX;-40°C to +85°CSee data sheet
MAX7408-MAX7415.pdf MAX7415
Reduce the Chances of Human Error: Part 2, Super Amps and Filters for Analog Interface MAX5492
A Filter Primer MAX7491
Generating Switched-Capacitor-Filter Clocks MAX7490
MAX7408.pdf MAX7408
MAX7408-MAX7415.pdf MAX7415