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MAX7408 Datasheet(数据表) 1 Page - Maxim Integrated Products |
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MAX7408 Datasheet(HTML) 1 Page - Maxim Integrated Products |
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1 page 
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800. For small orders, phone 1-800-835-8769. General Description The MAX7408/MAX7411/MAX7412/MAX7415 5th-order, lowpass, elliptic, switched-capacitor filters (SCFs) oper- ate 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. Applications ADC Anti-Aliasing CT2 Base Stations Post-DAC Filtering Speech Processing Features o 5th-Order, Elliptic Lowpass Filters o Low Noise and Distortion: -80dB THD + Noise o Clock-Tunable Corner Frequency (1Hz to 15kHz) o Single-Supply Operation +5V (MAX7408/MAX7411) +3V (MAX7412/MAX7415) o Low Power 1.2mA (operating mode) 0.2µA (shutdown mode) o Available in 8-Pin µMAX/DIP Packages o Low Output Offset: ±4mV 5th-Order, Lowpass, Elliptic, Switched-Capacitor Filters ________________________________________________________________ Maxim Integrated Products 1 OS OUT VDD 1 2 8 7 CLK SHDN IN GND COM µMAX/DIP TOP VIEW 3 4 6 5 MAX7408 MAX7411 MAX7412 MAX7415 VDD IN CLK OUT GND INPUT 0.1 µF 0.1 µF CLOCK SHDN OUTPUT COM OS MAX7408 MAX7411 MAX7412 MAX7415 VSUPPLY Typical Operating Circuit 19-1378; Rev 1; 10/98 Pin Configuration Ordering Information PART MAX7408CPA MAX7408CUA MAX7408EPA -40°C to +85°C 0°C to +70°C 0°C to +70°C TEMP. RANGE PIN-PACKAGE 8 Plastic DIP 8 µMAX 8 Plastic DIP MAX7408EUA MAX7415CPA MAX7415CUA MAX7415EPA -40°C to +85°C 0°C to +70°C 0°C to +70°C -40°C to +85°C 8 µMAX 8 Plastic DIP 8 µMAX 8 Plastic DIP MAX7415EUA -40°C to +85°C 8 µMAX PART TRANSITION RATIO OPERATING VOLTAGE (V) MAX7408 r = 1.6 +5 MAX7411 r = 1.25 +5 Selector Guide MAX7412 r = 1.6 +3 MAX7415 r = 1.25 +3 MAX7411CPA MAX7411CUA MAX7411EPA -40°C to +85°C 0°C to +70°C 0°C to +70°C 8 Plastic DIP 8 µMAX 8 Plastic DIP MAX7411EUA -40°C to +85°C 8 µMAX MAX7412CPA MAX7412CUA MAX7412EPA -40°C to +85°C 0°C to +70°C 0°C to +70°C 8 Plastic DIP 8 µMAX 8 Plastic DIP MAX7412EUA -40°C to +85°C 8 µMAX |
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