MAX7427CUA ,5th-Order, Lowpass, Elliptic, Switched-Capacitor FiltersELECTRICAL CHARACTERISTICS—MAX7426 (continued)(V = +5V, filter output measured at OUT, 10kΩ || 50pF ..
MAX7427CUA ,5th-Order, Lowpass, Elliptic, Switched-Capacitor FiltersFeaturesThe MAX7426/MAX7427 5th-order, lowpass, elliptic, 5th-Order, Elliptic Lowpass Filtersswitc ..
MAX7427EUA+T ,5th-Order, Lowpass, Elliptic, Switched-Capacitor FiltersApplications Ordering InformationADC Anti-Aliasing CT2 Base StationsPART TEMP. RANGE PIN-PACKAGEMAX ..
MAX7428EKA ,Standard Definition Video Reconstruction Filters and BuffersELECTRICAL CHARACTERISTICS(V = +5V ±10%, R = 300kΩ ±1%, C = 0.1µF, C = (1nF to 1µF) ±1%, C = 0 to 2 ..
MAX7428EKA/T ,Standard Definition Video Reconstruction Filters and Buffersapplications. ThePackage (MAX7432)MAX7432 triple filter is optimized for component (YP Pb ror embed ..
MAX7428EKA+T ,Standard Definition Video Reconstruction Filters and BuffersApplicationsMSPB is a trademark of Maxim Integrated Products, Inc.Set-Top BoxesµMAX is a registered ..
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
MAX7426CPA-MAX7426CUA-MAX7427CUA
5th-Order, Lowpass, Elliptic, Switched-Capacitor Filters
General DescriptionThe MAX7426/MAX7427 5th-order, lowpass, elliptic,
switched-capacitor filters (SCFs) operate from a single
+5V (MAX7426) or +3V (MAX7427) supply. The devices
draw only 0.8mA of supply current and allow corner fre-
quencies from 1Hz to 12kHz, making them ideal for
low-power post-DAC filtering and anti-aliasing applica-
tions. 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 MAX7426/MAX7427 deliver 37dB of stopband
rejection and a sharp rolloff with a transition ratio of
1.25. Their fixed response limits the design task to
selecting a clock frequency.
ApplicationsADC Anti-AliasingCT2 Base Stations
Post-DAC FilteringSpeech Processing
Features5th-Order, Elliptic Lowpass FiltersLow Noise and Distortion: -80dB THD + NoiseClock-Tunable Corner Frequency (1Hz to 12kHz)Single-Supply Operation
+5V (MAX7426)
+3V (MAX7427)Low Power
0.8mA (Operating Mode)
0.2µA (Shutdown Mode)Available in 8-Pin µMAX/PDIP PackagesLow Output Offset: ±4mV
MAX7426/MAX7427
5th-Order, Lowpass, Elliptic,
Switched-Capacitor Filters
Typical Operating Circuit19-1710; Rev 0; 4/00
Pin Configuration
Ordering Information
Selector Guide
MAX7426/MAX7427
5th-Order, Lowpass, Elliptic,
Switched-Capacitor Filters
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS—MAX7426(VDD= +5V, filter output measured at OUT, 10kΩ||50pF load to GND at OUT, SHDN= VDD, OS = COM, 0.1µF from COM to GND,
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..............................................................-0.3V to +6V
IN, OUT, COM, OS, CLK, SHDN................-0.3V to (VDD+ 0.3V)
OUT Short-Circuit Duration.......................................................1s
Continuous Power Dissipation (TA= +70°C)
8-Pin µMAX (derate 4.1mW/°C above +70°C).............330mW
8-Pin PDIP (derate 6.90mW/°C above +70°C).............552mW
Operating Temperature Ranges
MAX742 _C_A....................................................0°C to +70°C
MAX742 _E_A.................................................-40°C to +85°C
Storage Temperature Range.............................-65°C to +160°C
Lead Temperature (soldering, 10s).................................+300°C
MAX7426/MAX7427
5th-Order, Lowpass, Elliptic,
Switched-Capacitor Filters
5th-Order, Lowpass, Elliptic,
Switched-Capacitor Filters
ELECTRICAL CHARACTERISTICS—MAX7426 (continued)(VDD= +5V, filter output measured at OUT, 10kΩ||50pF load to GND at OUT, SHDN= VDD, OS = COM, 0.1µF from COM to GND,
fCLK= 100kHz, TA= TMINto TMAX, unless otherwise noted. Typical values are at TA= +25°C.)
ELECTRICAL CHARACTERISTICS—MAX7427(VDD= +3V, filter output measured at OUT pin, 10kΩ||50pF load to GND at OUT, SHDN= VDD, OS = COM, 0.1µF from COM to
GND, fCLK= 100kHz, TA= TMINto TMAX, unless otherwise noted. Typical values are at TA= +25°C.)
MAX7426/MAX7427
5th-Order, Lowpass, Elliptic,
Switched-Capacitor Filters
ELECTRICAL CHARACTERISTICS—MAX7427 (continued)(VDD= +3V, filter output measured at OUT pin, 10kΩ||50pF load to GND at OUT, SHDN= VDD, OS = COM, 0.1µF from COM to
GND, fCLK= 100kHz, TA= TMINto TMAX, unless otherwise noted. Typical values are at TA= +25°C.)
ELLIPTICFILTERCHARACTERISTICS(r = 1.25)(VDD= +5V for MAX7426, VDD= +3V for MAX7427, 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 3)
Note 1:The maximum fCis defined as the clock frequency fCLK= 100 ✕fCat which the peak SINAD drops to 68dB with a sinu-
soidal input at 0.2fC.
Note 2:DC insertion gain is defined as ∆VOUT / ∆VIN.
Note 3:fOSC(kHz) ≈ 17.5 ✕103/ COSC(COSCin pF).
Note 4:The input frequencies, fIN, are selected at the peaks and troughs of the ideal elliptic frequency responses.
MAX7426/MAX7427
5th-Order, Lowpass, Elliptic,
Switched-Capacitor FiltersFREQUENCY RESPONSE
MAX7426/27-02
INPUT FREQUENCY (kHz)
GAIN (dB)
Typical Operating Characteristics (VDD= +5V for MAX7426, VDD= +3V for MAX7427, fCLK= 100kHz, SHDN= VDD, VCOM= VOS= VDD/ 2, TA= +25°C, unless other-
wise noted.)
MAX7426/MAX7427
5th-Order, Lowpass, Elliptic,
Switched-Capacitor Filters
Typical Operating Characteristics (continued) (VDD= +5V for MAX7426, VDD= +3V for MAX7427, fCLK= 100kHz, SHDN= VDD, VCOM= VOS= VDD/ 2, TA= +25°C, unless other-
wise noted.)
