|
|
Part: MAX7405CSA
Category:
Analog & Mixed-Signal Processing
-> Filters
-> Analog Filters
Description: MAX7401, MAX7405 8th-Order, Lowpass, Bessel, Switched-capacitor Filters
Company: Maxim Integrated Products
Datasheet: Download MAX7405CSA datasheet File size : 554 kB
Request For quote: Find where to buy MAX7405CSA
Datasheet text preview:
19-4788; Rev 1; 6/99
8th-Order, Lowpass, Bessel, Switched-Capacitor Filters
General Description
The MAX7401/MAX7405 8th-order, lowpass, Bessel, switched-capacitor filters (SCFs) operate from a single + 5 V (MAX7401) or +3V (MAX7405) supply. These devices draw only 2mA of supply current and allow corner frequencies from 1Hz to 5kHz, making them ideal for low-power post-DAC filtering and anti-aliasing applications. They feature a shutdown mode that reduces 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 MAX7401/MAX7405 Bessel filters provide low overshoot and fast settling. Their fixed response simplifies the design task to selecting a clock frequency. o 8th-Order, Lowpass Bessel Filters o Low Noise and Distortion: -82dB THD + Noise o Clock-Tunable Corner Frequency (1Hz to 5kHz) o 100:1 Clock-to-Corner Ratio o Single-Supply Operation +5V (MAX7401) +3V (MAX7405) o Low Power 2mA (Operating Mode) 0.2µA (Shutdown Mode) o Available in 8-Pin SO/DIP Packages o Low Output Offset: ±5mV
Features
MAX7401/MAX7405
Applications
ADC Anti-Aliasing Post-DAC Filtering Air-Bag Electronics CT2 Base Stations Speech Processing
PART MAX7401CSA MAX7401CPA MAX7401ESA MAX7401EPA MAX7405CSA MAX7405CPA MAX7405ESA MAX7405EPA
Ordering Information
TEMP. RANGE 0°C to +70°C 0°C to +70°C -40°C to +85°C -40°C to +85°C 0°C to +70°C 0°C to +70°C -40°C to +85°C -40°C to +85°C PIN-PACKAGE 8 SO 8 Plastic DIP 8 SO 8 Plastic DIP 8 SO 8 Plastic DIP 8 SO 8 Plastic DIP
Pin Configuration
TOP VIEW
COM 1 IN 2 GND 3
8 7
CLK SHDN OS OUT
VSUPPLY 0.1µF VDD INPUT IN SHDN OUT OUTPUT
Typical Operating Circuit
MAX7401 MAX7405
6 5
VDD 4
SO/DIP
MAX7401 MAX7405
CLOCK CLK GND COM OS 0.1µF
________________________________________________________________ Maxim Integrated Products
1
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.
8th-Order, Lowpass, Bessel, Switched-Capacitor Filters MAX7401/MAX7405
ABSOLUTE MAXIMUM RATINGS
VDD to GND MAX7401 .....-0.3V to +6V MAX7405 .....-0.3V to +4V IN, OUT, COM, OS, CLK ...-0.3V to (VDD + 0.3V) SHDN......-0.3V to +6V OUT Short-Circuit Duration.........1sec Continuous Power Dissipation (TA = +70°C) 8-Pin SO (derate 5.88mW/°C above +70°C).......471mW 8-Pin DIP (derate 9.09mW/°C above +70°C) ......727mW Operating Temperature Ranges MAX740 _C_A ....0°C to +70°C MAX740 _E_A .......-40°C to +85°C Storage Temperature Range .....-65°C to +150°C Lead Temperature (soldering, 10sec) .....+300°C
Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS--MAX7401
( V D D = +5V, filter output measured at OUT, 10k | | 50pF load to GND at OUT, OS = COM, 0.1µF from COM to GND, SHDN = VDD, fCLK = 100kHz, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) PARAMETER FILTER CHARACTERISTICS Corner Frequency Clock-to-Corner Ratio Clock-to-Corner Tempco Output Voltage Range Output Offset Voltage DC Insertion Gain with Output Offset Removed Total Harmonic Distortion plus Noise OS Voltage Gain to OUT Input Voltage Range at OS THD+N AOS VOS Input, COM externally driven COM Voltage Range VCOM Output, COM internally biased Input Resistance at COM Clock Feedthrough Resistive Output Load Drive Maximum Capacitive Load at OUT Input Leakage Current at COM Input Leakage Current at OS CLOCK Internal Oscillator Frequency Clock Input Current Clock Input High Clock Input Low fOSC ICLK VIH VIL COSC = 1000pF (Note 4) VCLK = 0 or 5V VDD - 0.5 0.5 29 38 ±15 48 ±30 kHz µA V V RL CL SHDN = GND, VCOM = 0 to VDD VOS = 0 to (VDD - 1V) (Note 3) 10 50 RCOM VDD / 2 - 0.5 VDD / 2 - 0.2 75 VOFFSET VIN = VCOM = VDD / 2 VCOM = VDD / 2 (Note 2) fIN = 200Hz, VIN = 4Vp-p, measurement bandwidth = 22kHz -0.1 0.25 ±5 0.15 -82 1 VCOM ±0.1 VDD / 2 VDD / 2 + 0.5 V VDD / 2 VDD / 2 + 0.2 125 10 1 500 ±0.1 ±0.1 ±10 ±10 k mVp-p k pF µA µA fC fCLK / fC (Note 1) 0.001 to 5 100:1 10 VDD - 0.25 ±25 0.3 ppm/°C V mV dB dB V/ V V kHz SYMBOL CONDITIONS MIN TYP MAX UNITS
2
_______________________________________________________________________________________
8th-Order, Lowpass, Bessel, Switched-Capacitor Filters
ELECTRICAL CHARACTERISTICS--MAX7401 (continued)
( V D D = +5V, filter output measured at OUT, 10k | | 50pF load to GND at OUT, OS = COM, 0.1µF from COM to GND, SHDN = VDD, fCLK = 100kHz, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) PARAMETER POWER REQUIREMENTS Supply Voltage Supply Current Shutdown Current Power-Supply Rejection Ratio SHUTDOWN SHDN Input High SHDN Input Low SHDN Input Leakage Current VSDH VSDL V SHDN = 0 to VDD ±0.1 VDD - 0.5 0.5 ±10 V V µA VDD IDD I SHDN PSRR Operating mode, no load, IN = OS = COM SHDN = GND, CLK driven from 0 to VDD Measured at DC 4.5 2 0.2 60 5.5 3.5 1 V mA µA dB SYMBOL CONDITIONS MIN TYP MAX UNITS
MAX7401/MAX7405
ELECTRICAL CHARACTERISTICS--MAX7405
( V D D = +3V, filter output measured at OUT, 10k | | 50pF load to GND at OUT, OS = COM, 0.1µF from COM to GND, SHDN = VDD, fCLK = 100kHz, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) PARAMETER FILTER CHARACTERISTICS Corner Frequency Clock-to-Corner Ratio Clock-to-Corner Tempco Output Voltage Range Output Offset Voltage DC Insertion Gain with Output Offset Removed Total Harmonic Distortion plus Noise OS Voltage Gain to OUT Input Voltage Range at OS COM Voltage Range Input Resistance at COM Clock Feedthrough Resistance Output Load Drive Maximum Capacitive Load at OUT Input Leakage Current at COM Input Leakage Current at OS RL CL SHDN = GND, VCOM = 0 to VDD VOS = 0 to (VDD - 1V) (Note 3) 10 50 THD+N AOS VOS VCOM RCOM COM internally biased or externally driven VDD / 2 - 0.1 75 VOFFSET VIN = VCOM = VDD / 2 VCOM = VDD / 2 (Note 2) fIN = 200Hz, VIN = 2.5Vp-p, measurement bandwidth = 22kHz -0.1 0.25 ±5 0.03 -84 1 VCOM ±0.1 VDD / 2 VDD / 2 + 0.1 125 10 1 500 ±0.1 ±0.1 ±10 ±10 fC fCLK/fC (Note 1) 0.001 to 5 100:1 10 VDD - 0.25 ±25 0.3 ppm/°C V mV dB dB V/ V V V k mVp-p k pF µA µA kHz SYMBOL CONDITIONS MIN TYP MAX UNITS
_______________________________________________________________________________________
3
Others parts begin by ma
|
|
|
