MAX7419EUA+T-MAX7420CUA+-MAX7422EUA+T-MAX7424EUA+ Fast Delivery |IC PHOENIX CO.,LIMITED

MAX7420CUA+ ,5th-Order, Lowpass, Switched-Capacitor FiltersMAX7418–MAX742519-1821; Rev 0; 11/005th-Order, Lowpass, Switched-Capacitor Filters
MAX7422EUA+T ,5th-Order, Lowpass, Switched-Capacitor FiltersFeaturesThe MAX7418–MAX7425 5th-order, low-pass, switched-♦ 5th-Order, Lowpass Filterscapacitor fil ..
MAX7423EUA ,5th-Order, Lowpass, Switched-Capacitor FiltersApplications MAX7418EUA -40°C to +85°C 8 µMAXMAX7419CUA0°C to +70°C 8 µMAXADC Anti-Aliasing CT2 Bas ..
MAX7424EUA ,5th-Order, Lowpass, Switched-Capacitor FiltersELECTRICAL CHARACTERISTICS—MAX7418–MAX7421(V = +5V, filter output measured at OUT, 10kΩ || 50pF loa ..
MAX7424EUA+ ,5th-Order, Lowpass, Switched-Capacitor FiltersELECTRICAL CHARACTERISTICS—MAX7418–MAX7421(V = +5V, filter output measured at OUT, 10kΩ || 50pF loa ..
MAX7425CUA ,5th-Order, Lowpass, Switched-Capacitor Filtersapplications. They feature a shutdown mode Clock-Turnable Corner Frequency (1Hz to 45kHz)that red ..
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

MAX7419EUA+T-MAX7420CUA+-MAX7422EUA+T-MAX7424EUA+
5th-Order, Lowpass, Switched-Capacitor Filters
General Description
The MAX7418–MAX7425 5th-order, low-pass, switched-
capacitor filters (SCFs) operate from a single +5V
(MAX7418–MAX7421) or +3V (MAX7422–MAX7425)
supply. These devices draw only 3mA of supply current
and allow corner frequencies from 1Hz to 45kHz, mak-
ing 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: 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 MAX7418/MAX7422 deliver 53dB of stopband
rejection and a sharp rolloff with a 1.6 transition ratio.
The MAX7421/MAX7425 achieve a sharper rolloff with a
1.25 transition ratio while still providing 37dB of stop-
band rejection. The MAX7419/MAX7423 Bessel filters
provide low overshoot and fast settling, and the
MAX7420/MAX7424 Butterworth filters provide a maxi-
mally flat passband response. Their fixed response sim-
plifies the design task of selecting a clock frequency.
Applications
ADC Anti-AliasingCT2 Base Stations
DAC PostfilteringSpeech Processing
Features5th-Order, Lowpass Filters
Elliptic Response (MAX7418/MAX7421/
MAX7422/MAX7425)
Bessel Response (MAX7419/MAX7423)
Butterworth Response (MAX7420/MAX7424)Clock-Turnable Corner Frequency (1Hz to 45kHz)Single-Supply Operation
+5V (MAX7418–MAX7421)
+3V (MAX7422–MAX7425)Low Power
3mA (Operating Mode)
0.2µA (Shutdown Mode)Available in 8-Pin µMAX PackageLow Output Offset: ±4mV
MAX7418–MAX7425
5th-Order, Lowpass,
Switched-Capacitor Filters
OUTVDD
CLK
SHDNIN
GND
COM
μMAX
TOP VIEW
MAX7418–
MAX7425
VDD
CLK
OUT
GND
INPUT
0.1μF
0.1μF
CLOCK
SHDN
OUTPUT
VSUPPLY
COM
MAX7418–
MAX7425
Typical Operating Circuit
19-1821; Rev 0; 11/00
Pin Configuration
Ordering Information
Selector Guide
PART
MAX7418EUA-40°C to +85°C
TEMP. RANGEPIN-PACKAGE
8 µMAX
Selector Guide continued at end of data sheet.
Ordering Information continued at end of data sheet.
MAX7418CUA0°C to +70°C8 µMAX
MAX7419CUA0°C to +70°C8 µMAX
MAX7419EUA-40°C to +85°C8 µMAX
MAX7420CUA0°C to +70°C8 µMAX
MAX7420EUA-40°C to +85°C8 µMAX
MAX7421CUA0°C to +70°C8 µMAX
MAX7421EUA-40°C to +85°C8 µMAXPARTFILTER RESPONSEOPERATING
VOLTAGE (V)
MAX7418r = 1.6+5
MAX7419Bessel+5
MAX7420Butterworth+5
MAX7421r = 1.25+5
MAX7418–MAX7425
5th-Order, Lowpass,
Switched-Capacitor Filters
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS—MAX7418–MAX7421
(VDD= +5V, filter output measured at OUT, 10kΩ|| 50pF load to GND at OUT, OS = COM, 0.1µF capacitor from COM to GND,
SHDN= VDD, fCLK= 2.2MHz, 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
Operating Temperature Ranges
MAX74 _ _C_A ...................................................0°C to +70°C
MAX74 _ _E_A ................................................-40°C to +85°C
Junction Temperature......................................................+150°C
Storage Temperature Range.............................-65°C to +160°C
Lead Temperature (soldering, 10s).................................+300°C
CLOCK
FILTER CHARACTERISTICS110135
±50±75
MAX7419/MAX7420
MAX7418/MAX7421
MAX7419/MAX7420
MAX7418/MAX7421
-0.20+0.2MAX7419/MAX7420
MAX7418/MAX7421
0.001 to 30VIN= 4Vp-p (Note 1)
Input Voltage Range at OS
2.02.53.0COMVoltage Range
Maximum Capacitive Output
Load Drive
UNITS
kHz
ppm/°C
V/V
mVp-p
kHz
Clock Output Current
(Internal Oscillator Mode)ICLK±40±60
Clock Input HighVIH4.5
Clock Input LowVIL0.5
VCLK= 0 or 5V
PARAMETERSYMBOLMINTYPMAX
DC Insertion Gain with
Output Offset Removed0.20.4
Output Offset Voltage VOFFSET±4±25
Output Voltage Range0.25VDD- 0.25
Clock-to-Corner Tempco 10
Offset Voltage GainAOS1
VCOM
Corner Frequencyfc
Clock-to-Corner RatiofCLK/fC100:1
VOSVCOM ±0.1
Input Resistance at COMRCOM100140
Clock Feedthrough5
Resistive Output Load Drive RL10150500
Input Leakage Current at COM±0.1±10
Input Leakage Current at OS±0.1±10
Internal Oscillator FrequencyfOSC6887106
CONDITIONS
Output, COM unconnected
VCOM= VDD / 2
(Note 2)
VIN= VCOM= VDD / 2
Input, OS externally driven
OS to OUT
Input, COM externally driven
SHDN= GND, VCOM= 0 to VDD
VOS= 0 to VDD
COSC= 1000pF (Note
-78MAX7419
MAX7418-76
-78MAX7421
MAX7420dBTotal Harmonic Distortion
plus NoiseTHD+N-67
fIN= 2KHz,
VIN= 4Vp-p,
measurement
bandwidth = 80kHz
FILTER CHARACTERISTICS
CLOCK
0.001 to 45
MAX7418–MAX7425
5th-Order, Lowpass,
Switched-Capacitor Filters
5th-Order, Lowpass,
Switched-Capacitor Filters
ELECTRICAL CHARACTERISTICS—MAX7418–MAX7421 (continued)
(VDD= +5V, filter output measured at OUT, 10kΩ|| 50pF load to GND at OUT, OS = COM, 0.1µF capacitor from COM to GND,
SHDN= VDD, fCLK= 2.2MHz, TA= TMINto TMAX, unless otherwise noted. Typical values are at TA= +25°C.)
ELECTRICAL CHARACTERISTICS—MAX7422–MAX7425
(VDD= +3V, filter output measured at OUT pin, 10kΩ|| 50pF load to GND at OUT, OS = COM, 0.1µF capacitor from COM to GND,
SHDN= VDD, fCLK= 2.2MHz, TA= TMINto TMAX, unless otherwise noted. Typical values are at TA= +25°C.)
CONDITIONSMINTYPMAXSYMBOLPARAMETER
IN = COM (Note 4)
SHDN= GND
Operating mode, no
load
0.5VSDLSHDNInput Low
4.5VSDHSHDNInput HighPSRRPower-Supply Rejection Ratio
0.21ISHDNShutdown Current
2.93.6Supply CurrentIDD
4.55.5VDDSupply Voltage
UNITS
SHDNInput Leakage CurrentVSHDN= 0 to VDD±0.2±10µA
MAX7418/MAX7421
MAX7419/MAX74203.44.1
POWER REQUIREMENTS
SHUTDOWN
FILTER CHARACTERISTICS
100:1 to 45MAX7423/MAX7424
MAX7422/MAX7425
-0.20+0.2MAX7423/MAX7424
MAX7422/MAX7425
UNITS
kHz
ppm/°C
V/V
mVp-p
PARAMETERSYMBOLMINTYPMAX
DC Insertion Gain with Output
Offset Removed0.20.4
Output Offset Voltage VOFFSET±4±25
Output Voltage Range0.25VDD- 0.25
Clock-to-Corner Tempco 10
Offset Voltage GainAOS1
VCOM
Corner-Frequency RangefC
Clock-to-Corner RatiofCLK/fC100:1
Input Voltage Range at OSVOSVCOM ±0.1
Input Resistance at COMRCOM100140
Clock Feedthrough3
Resistive Output Load Drive RL10150500
Input Leakage Current at COM±0.1±10
Input Leakage Current at OS±0.1±10
CONDITIONS
VCOM= VDD / 2
(Note 2)
VIN= VCOM= VDD / 2
Measured with respect to COM
OS to OUT
VIN= 2.5Vp-p
(Note 1)
SHDN= GND, VCOM= 0 to VDD
VOS= 0 to VDD
Maximum Capacitive Load
at OUT
-81MAX7423
MAX7422-80
-80MAX7425
MAX7424dBTotal Harmonic Distortion plus
NoiseTHD+N-70
fIN= 2kHz,
VIN= 2.5Vp-p,
measurement
bandwidth = 80kHz
1.41.51.6Input, COM externally drivenVCOMVoltage Range1.41.51.6Output, COM internally driven
FILTER CHARACTERISTICS
MAX7418–MAX7425
5th-Order, Lowpass,
Switched-Capacitor Filters
ELECTRICAL CHARACTERISTICS—MAX7422–MAX7425 (continued)
(VDD= +3V, filter output measured at OUT pin, 10kΩ|| 50pF load to GND at OUT, OS = COM, 0.1µF capacitor from COM to GND,
SHDN= VDD, fCLK= 2.2MHz, TA= TMINto TMAX, unless otherwise noted. Typical values are at TA= +25°C.)
CONDITIONSMINTYPMAXSYMBOLPARAMETER
Measured at DC
SHDN= GND
0.5VSDLSHDNInput Low
2.5VSDHSHDNInput HighPSRRPower-Supply Rejection Ratio
0.21ISHDNShutdown Current
2.73.6VDDSupply Voltage
UNITS
SHDNInput Leakage CurrentVSHDN= 0 to VDD±0.2±10µA
COSC = 1000pF
(Note 3)87106fOSCInternal Oscillator FrequencykHz
0.5VILClock Input Low
2.5VIHClock Input High87106ICLKClock Output Current (Internal
Oscillator Mode)kHz
MAX7422/MAX7425
MAX7423/MAX742486110135
MAX7422/MAX7425
MAX7423/MAX742486110135
POWER REQUIREMENTS
Operating mode,
no load3.03.8Supply CurrentIDDmA
CLOCK
SHUTDOWN
MAX7422/MAX7425
MAX7423/MAX7424
MAX7418–MAX7425
5th-Order, Lowpass,
Switched-Capacitor Filters
FILTER CHARACTERISTICS
(VDD= +5V for MAX7418-MAX7420, VDD= +3V for MAX7422-MAX7425 filter output measured at OUT, 10kΩ||50pF load to GND at
OUT, SHDN= VDD, fCLK= 2.2MHz, TA = TMINto TMAX,unless otherwise noted.)
Note 1:The maximum fCis defined as the clock frequency fCLK= 100 x fCat which the peak S / (THD+N) drops to 68dB with a
sinusoidal input at 0.2fC. Maximum fC increases as VINsignal amplitude decreases.
Note 2:DC insertion gain is defined as ΔVOUT / ΔVIN.
Note 3:MAX7418/MAX7421/MAX7422/MAX7425: fOSC(kHz) ≅ 87x103/ COSC(pF).
MAX7419/MAX7420/MAX7423/MAX7424: fOSC(kHz) ≅ 110x103/ COSC(pF).
Note 4:PSRR is the change in output voltage from a VDDof 4.5V and a VDDof 5.5V.
BESSEL FILTERS—MAX7409/MAX7413
-67-60fIN= 7fC
Insertion Gain Relative toGain-41.0-35fIN= 7fC
-1.0-0.74fIN= 0.5fC
fIN= 4fC
Insertion Gain Relative toGain
-70-65fIN= 5fC
Insertion Gain Relative toGain
-3.6-3.0-2.4fIN= fC
fIN= 3fC
fIN= 0.5fC
fIN= 7fC
-41.0-35fIN= 4fC
-3.6-3.0-2.4fIN= fC-0.74fIN= 0.5fC
PARAMETERMINTYPMAXUNITSCONDITIONS
-0.4-0.20.4fIN= 0.68fC
-0.4-0.20.4fIN= 0.87fC
-0.4-0.20.4fIN= 0.97fC
-0.7-0.20.2fIN= fC
-36-33fIN= 1.25fC
-37.2-35fIN= 1.43fC
Insertion Gain with DCGain
Error Removed (Note 4)
fIN= 3.25fC
-0.4-0.20.4fIN= 0.38fC
BESSEL FILTERS—MAX7419/MAX7423
BUTTERWORTH FILTERS—MAX7420/MAX7424
BESSEL FILTERS—MAX7419/MAX7423
ELLIPTIC, R = 1.2—MAX7421/MAX7425
__________________________________________Typical Operating Characteristics
(VDD= +5V for MAX7418–MAX7421, VDD= +3V for MAX7422–MAX7425; fCLK= 2.2MHz; SHDN= VDD; VCOM= VOS= VDD/ 2; = +25°C; unless otherwise noted.)
MAX7418–MAX7425
5th-Order, Lowpass,
Switched-Capacitor Filters
MAX7418/MAX7422
FREQUENCY RESPONSE (ELLIPTIC, R = 1.6)
MAX7418 toc01
INPUT FREQUENCY (kHz)
GAIN (dB)
MAX7419/MAX7423
FREQUENCY RESPONSE (BESSEL)
MAX7418 toc02
INPUT FREQUENCY (kHz)
GAIN (dB)
MAX7420/MAX7424
FREQUENCY RESPONSE (BUTTERWORTH)
MAX7418 toc03
INPUT FREQUENCY (kHz)
GAIN (dB)
MAX7421/MAX7425
FREQUENCY RESPONSE (ELLIPTIC, R = 1.25)
MAX7418 toc04
INPUT FREQUENCY (kHz)
GAIN (dB)
MAX7420/MAX7424
PASSBAND FREQUENCY RESPONSE
(BUTTERWORTH)
MAX7418 toc07
GAIN (dB)
MAX7418 toc05
MAX7418/MAX7422
PASSBAND FREQUENCY RESPONSE
(ELLIPTIC, R = 1.6)
INPUT FREQUENCY (kHz)
GAIN (dB)
MAX7419/MAX7423
PASSBAND FREQUENCY RESPONSE
(BESSEL)
MAX7418 toc06
INPUT FREQUENCY (kHz)
GAIN (dB)
MAX7421/MAX7425
PASSBAND FREQUENCY RESPONSE
(ELLIPTIC, R = 1.25)
MAX7418 toc08
GAIN (dB)
MAX7418/MAX7422
PHASE RESPONSE (ELLIPTIC, R = 1.6)
PHASE SHIFT (DEGREES)
MAX7418 toc09
MAX7418–MAX7425
5th-Order, Lowpass,
Switched-Capacitor Filters
____________________________Typical Operating Characteristics (continued)
(VDD= +5V for MAX7418–MAX7421, VDD= +3V for MAX7422–MAX7425; fCLK= 2.2MHz; SHDN= VDD; VCOM= VOS= VDD/ 2; = +25°C; unless otherwise noted.)
MAX7419/MAX7423
PHASE RESPONSE (BESSEL)
MAX7418 toc10
INPUT FREQUENCY (kHz)
PHASE SHIFT (DEGREES)
MAX7420/MAX7424
PHASE RESPONSE (BUTTERWORTH)
MAX7418 toc11
INPUT FREQUENCY (kHz)
PHASE SHIFT (DEGREES)
MAX7424/MAX7425
PHASE RESPONSE (ELLIPTIC, R = 1.25)
MAX7418 toc12
INPUT FREQUENCY (kHz)
PHASE SHIFT (DEGREES)
MAX7418
THD + NOISE vs. INPUT SIGNAL AMPLITUDE
(ELLIPTIC, R = 1.6)
MAX7418 toc13
AMPLITUDE (Vp-p)
THD + N (dB)
SEE TABLE A
MAX7421
THD + NOISE vs. INPUT SIGNAL AMPLITUDE
(ELLIPTIC, R = 1.25)
MAX7418 toc16
THD + N (dB)
SEE TABLE A
MAX7419
THD + NOISE vs. INPUT SIGNAL AMPLITUDE
(BESSEL)
MAX7418 toc14
AMPLITUDE (Vp-p)
THD + N (dB)
SEE TABLE A
MAX7420
THD + NOISE vs. INPUT SIGNAL AMPLITUDE
(BUTTERWORTH)
MAX7418 toc15
AMPLITUDE (Vp-p)
THD + N (dB)
SEE TABLE A
MAX7422
THD + NOISE vs. INPUT SIGNAL AMPLITUDE
(ELLIPTIC, R = 1.6)
MAX7418 toc17
THD + N (dB)A
SEE TABLE A
MAX7423
THD + NOISE vs. INPUT SIGNAL AMPLITUDE
(BESSEL)
MAX7418 toc18
THD + N (dB)
SEE TABLE A

Partno	Mfg	Dc	Qty	Available	Descript
MAX7419EUA+T	MAXIM	N/a	535	avai	5th-Order, Lowpass, Switched-Capacitor Filters
MAX7420CUA+	N/A	N/a	2500	avai	5th-Order, Lowpass, Switched-Capacitor Filters
MAX7422EUA+T	MAXIM	N/a	2413	avai	5th-Order, Lowpass, Switched-Capacitor Filters
MAX7424EUA+	MAX	N/a	124	avai	5th-Order, Lowpass, Switched-Capacitor Filters