MAX7401EPA ,8th-Order, Lowpass, Bessel, Switched-Capacitor FiltersApplicationsPART TEMP. RANGE PIN-PACKAGEADC Anti-Aliasing CT2 Base StationsMAX7401CSA 0°C to +70°C ..
MAX7401ESA ,8th-Order, Lowpass, Bessel, Switched-Capacitor FiltersMAX7401/MAX740519-4788; Rev 1; 6/998th-Order, Lowpass, Bessel, Switched-Capacitor Filters
MAX7403CPA ,8-th-order, lowpass, elliptic, switched-capacitor filter. Filter response elliptic (r=1.2), operating voltage +5Vapplications. They fea-' Single-Supply Operationture a shutdown mode that reduces the supply curren ..
MAX7403CSA ,8-th-order, lowpass, elliptic, switched-capacitor filter. Filter response elliptic (r=1.2), operating voltage +5VELECTRICAL CHARACTERISTICS—MAX7400/MAX7403(V = +5V, filter output measured at OUT, 10kΩ || 50pF loa ..
MAX7404ESA+ ,8th-Order, Lowpass, Elliptic, Switched-Capacitor FiltersApplications Ordering Information continued at end of data sheet.ADC Anti-Aliasing Speech Processin ..
MAX7405CSA ,8th-Order, Lowpass, Bessel, Switched-Capacitor FiltersFeaturesThe MAX7401/MAX7405 8th-order, lowpass, Bessel,' 8th-Order, Lowpass Bessel Filtersswitched- ..
MB6M ,MINIATURE GLASS PASSIVATED SINGLE-PHASE BRIDGE RECTIFIERThermal Characteristics (TA = 25°C unless otherwise noted)Parameter Symbol MB2M MB4M MB6M UnitDevic ..
MB6S ,Bridge RectifiersThermal Characteristics (T = 25°C unless otherwise noted)AParameter Symbol MB2S MB4S MB6S UnitDevic ..
MB7117E , Schottky TTL 2048-Bit Bipolar Programmable Read-Only Memory
MAX7401CSA-MAX7401EPA-MAX7401ESA-MAX7405CSA-MAX7405EPA-MAX7405ESA
8th-Order, Lowpass, Bessel, Switched-Capacitor Filters
General DescriptionThe MAX7401/MAX7405 8th-order, lowpass, Bessel,
switched-capacitor filters (SCFs) operate from a single
+5V (MAX7401) or +3V (MAX7405) supply. These
devices draw only 2mA of supply current and allow cor-
ner frequencies from 1Hz to 5kHz, making them ideal
for low-power post-DAC filtering and anti-aliasing appli-
cations. 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 out-
put level.
The MAX7401/MAX7405 Bessel filters provide low over-
shoot and fast settling. Their fixed response simplifies
the design task to selecting a clock frequency.
ApplicationsADC Anti-AliasingCT2 Base Stations
Post-DAC FilteringSpeech Processing
Air-Bag Electronics
Features8th-Order, Lowpass Bessel FiltersLow Noise and Distortion: -82dB THD + NoiseClock-Tunable Corner Frequency (1Hz to 5kHz)100:1 Clock-to-Corner RatioSingle-Supply Operation
+5V (MAX7401)
+3V (MAX7405)Low Power
2mA (Operating Mode)
0.2µA (Shutdown Mode)Available in 8-Pin SO/DIP PackagesLow Output Offset: ±5mV
MAX7401/MAX7405
8th-Order, Lowpass, Bessel,
Switched-Capacitor Filtersypical Operating Circuit19-4788; Rev 1; 6/99
Pin Configuration
Ordering Information
MAX7401/MAX7405
8th-Order, Lowpass, Bessel,
Switched-Capacitor Filters
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS—MAX7401(VDD= +5V, filter output measured at OUT, 10kΩ|| 50pF load to GND at OUT, OS = COM, 0.1µF from COM to GND,
SHDN= VDD, fCLK= 100kHz, TA= TMINto TMAX, unless otherwise noted. Typical values are at TA= +25°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.
VDDto 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
MAX7401/MAX7405
8th-Order, Lowpass, Bessel,
Switched-Capacitor Filters
ELECTRICAL CHARACTERISTICS—MAX7401 (continued)(VDD= +5V, filter output measured at OUT, 10kΩ|| 50pF load to GND at OUT, OS = COM, 0.1µF from COM to GND,
SHDN= VDD, fCLK= 100kHz, TA= TMINto TMAX, unless otherwise noted. Typical values are at TA= +25°C.)
ELECTRICAL CHARACTERISTICS—MAX7405(VDD= +3V, filter output measured at OUT, 10kΩ|| 50pF load to GND at OUT, OS = COM, 0.1µF from COM to GND, SHDN= VDD, fCLK= 100kHz, TA= TMINto TMAX, unless otherwise noted. Typical values are at TA= +25°C.)
MAX7401/MAX7405
8th-Order, Lowpass, Bessel,
Switched-Capacitor Filters
FILTER CHARACTERISTICS—MAX7401/MAX7405(VDD= +5V for MAX7401, VDD= +3V for MAX7405; filter output measured at OUT; 10kΩ||50pF load to GND at OUT; SHDN= VDD;
VCOM = VOS = VDD/2;fCLK= 100kHz; TA = TMINto TMAX;unless otherwise noted. Typical values are at TA= +25°C.)
Note 1:The maximum fCis defined as the clock frequency, fCLK= 100 ·fC,at which the peak SINAD drops to 68dB with a sinu-
soidal input at 0.2fC.
Note 2:DC insertion gain is defined as ΔVOUT / ΔVIN.
Note 3:OS voltages above VDD - 1V saturate the input and result in a 75µA typical input leakage current.
Note 4:For MAX7401, fOSC(kHz) @ 38 ·103/ COSC(pF). For MAX7405, fOSC(kHz) @ 34 ·103/ COSC(pF).
ELECTRICAL CHARACTERISTICS—MAX7405 (continued)(VDD= +3V, filter output measured at OUT, 10kΩ|| 50pF load to GND at OUT, OS = COM, 0.1µF from COM to GND,
SHDN= VDD, fCLK= 100kHz, TA= TMINto TMAX, unless otherwise noted. Typical values are at TA= +25°C.)
MAX7401/MAX7405
8th-Order, Lowpass, Bessel,
Switched-Capacitor Filters
Typical Operating Characteristics (VDD= +5V for MAX7401, VDD= +3V for MAX7405; fCLK= 100kHz; SHDN= VDD; VCOM= VOS= VDD/ 2; TA= +25°C; unless otherwise
noted.)
MAX7401/MAX7405
8th-Order, Lowpass, Bessel,
Switched-Capacitor Filters
Typical Operating Characteristics (continued)(VDD= +5V for MAX7401, VDD= +3V for MAX7405; fCLK= 100kHz; SHDN= VDD; VCOM= VOS= VDD/ 2; TA= +25°C; unless otherwise
noted.)
Table A. THD Plus Noise vs. Input
Signal Amplitude Test Conditions
