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MAX7414CUA+T |MAX7414CUATMAXIM Pb-freeN/a1555avai5th-Order, Lowpass, Switched-Capacitor Filters
MAX7414EUA+ |MAX7414EUAMAXIMN/a12avai5th-Order, Lowpass, Switched-Capacitor Filters
MAX7414EUA+T |MAX7414EUATMAXIMN/a2500avai5th-Order, Lowpass, Switched-Capacitor Filters


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MAX7414CUA+T-MAX7414EUA+-MAX7414EUA+T
5th-Order, Lowpass, Switched-Capacitor Filters
General Description
The MAX7409/MAX7410/MAX7413/MAX7414 5th-order,
lowpass, switched-capacitor filters (SCFs) operate from
a single +5V (MAX7409/MAX7410) or +3V (MAX7413/
MAX7414) supply. These 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 feature a
shutdown mode, which reduces the 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 MAX7409/MAX7413 Bessel filters provide low over-
shoot and fast settling, while the MAX7410/MAX7414
Butterworth filters provide a maximally flat passband
response. Their fixed response simplifies the design
task to selecting a clock frequency.
Applications

ADC Anti-AliasingCT2 Base Stations
DAC PostfilteringSpeech Processing
Air-Bag Electronics
Features
5th-Order Lowpass Filters
Bessel Response (MAX7409/MAX7413)
Butterworth Response (MAX7410/MAX7414)
Clock-Tunable Corner Frequency (1Hz to 15kHz)Single-Supply Operation
+5V (MAX7409/MAX7410)
+3V (MAX7413/MAX7414)
Low Power
1.2mA (operating mode)
0.2μA (shutdown mode)
Available in 8-Pin μMAX/DIP PackagesLow Output Offset: ±4mVth-Order, Lowpass, itched-Capacitor Filters
OUTVDD
CLK
SHDNIN
GND
COM
μMAX/DIP
TOP VIEW
MAX7409
MAX7410
MAX7413
MAX7414
VDD
CLK
OUT
GND
INPUT
0.1μF
0.1μF
CLOCK
SHDN
OUTPUT
VSUPPLY
COM
MAX7409
MAX7410
MAX7413
MAX7414
Typical Operating Circuit

19-4766; Rev 1; 9/98
Pin Configuration
Ordering Information
PARTFILTER RESPONSEOPERATING
VOLTAGE (V)

MAX7409Bessel+5
MAX7410Butterworth+5
Selector Guide
PART

MAX7409CPA
MAX7409EUA
MAX7409EPA-40°C to +85°C
-40°C to +85°C
0°C to +70°C
TEMP. RANGEPIN-PACKAGE

8 Plastic DIP
8 μMAX
8 Plastic DIP
MAX7410CUA

MAX7410CPA
MAX7410EUA
MAX7410EPA-40°C to +85°C
-40°C to +85°C
0°C to +70°C
0°C to +70°C8 μMAX
8 Plastic DIP
8 μMAX
8 Plastic DIP
Ordering Information continued at end of data sheet.

MAX7413Bessel+3
MAX7414Butterworth+3
MAX7409CUA
0°C to +70°C8 μMAX
th-Order, Lowpass,itched-Capacitor FiltersABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS—MAX7409/MAX7410

(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= 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...................................................1sec
Continuous Power Dissipation (TA= +70°C)
8-Pin DIP (derate 9.09mW/°C above +70°C)...............727mW
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
Storage Temperature Range.............................-65°C to +160°C
Lead Temperature (soldering, 10sec).............................+300°C
COSC= 1000pF (Note 3)
VOS= 0 to VDD
SHDN= GND, VCOM= 0 to VDD
(Note 1)
Input, COM externally driven
OS to OUT
Input, OS externally driven
fIN= 200Hz, VIN= 4Vp-p,
measurement bandwidth = 22kHz
VIN= VCOM= VDD / 2
VCOM= VDD / 2 (Note 2)
Output, COM unconnected
CONDITIONS
3038fOSCInternal Oscillator Frequency
±0.1±10Input Leakage Current at OS
±0.1±10Input Leakage Current at COM500CL1RLResistive Output Load Drive Clock Feedthrough
110180RCOMInput Resistance at COM
VCOM ±0.1VOS
100:1fCLK/fcClock-to-Corner Ratio
0.001 to 15fcCorner Frequency
VCOMAOSOffset Voltage Gain
-85THD+NTotal Harmonic Distortion
plus NoiseClock-to-Corner Tempco
0.25VDD- 0.25Output Voltage Range±25VOFFSETOutput Offset Voltage
-0.200.2DC Insertion Gain with
Output Offset Removed
MINTYPMAXSYMBOLPARAMETER

VCLK= 0 or 5V
0.5VILClock Input Low
4.5VIHClock Input High
±13.5±20ICLKClock Output Current
(Internal Oscillator Mode)
kHz
mVp-p
V/V
ppm/°C
kHz
UNITS

Maximum Capacitive Output
Load Drive
FILTER CHARACTERISTICS
CLOCK

MAX7409
MAX7410-78
COMVoltage Range 2.02.53.0
Input Voltage Range at OS
th-Order, Lowpass, itched-Capacitor Filtersth-Order, Lowpass, itched-Capacitor FiltersELECTRICAL CHARACTERISTICS—MAX7409/MAX7410
(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= 100kHz, TA= TMINto TMAX, unless otherwise noted. Typical values are at TA= +25°C.)
ELECTRICAL CHARACTERISTICS—MAX7413/MAX7414

(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= 100kHz, 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
1.21.5Supply CurrentIDD
4.55.5VDDSupply Voltage
UNITS

SHDNInput Leakage CurrentVSHDN= 0 to VDD±0.2±10μA
POWER REQUIREMENTS
SHUTDOWN
±0.1±10VOS= 0 to VDDInput Leakage Current at OS±0.1±10SHDN= GND, VCOM = 0 to VDDInput Leakage Current at COM
Maximum Capacitive Output
Load Drive
UNITS

kHz
ppm/°C
V/V
mVp-p
PARAMETERSYMBOLMINTYPMAX

DC Insertion Gain with
Output Offset Removed-0.20+0.2
Output Offset Voltage VOFFSET±4±25
Output Voltage Range0.25VDD- 0.25
Clock-to-Corner Tempco 10
Total Harmonic Distortion
plus NoiseTHD+N-83
Offset Voltage GainAOS1
Corner FrequencyfC0.001 to 15
Clock-to-Corner RatiofCLK/ fC100:1
COMVoltage RangeVCOM1.41.51.6
VCOM±0.1
Clock Feedthrough3
Resistance Output Load Drive RL10150500
CONDITIONS

VCOM= VDD / 2 (Note 2)
VIN= VCOM= VDD / 2
fIN= 200Hz, VIN= 2.5Vp-p,
measurement bandwidth = 22kHz
Input, COM externally driven
OS to OUT
Input, OS externally driven
(Note 1)
1.41.51.6Input Resistance at COMRCOM110180
Input Voltage Range at OSVOS
MAX7413
MAX7414-81
FILTER CHARACTERISTICS
Output, COM unconnected
th-Order, Lowpass,itched-Capacitor FiltersCOSC= 1000pF (Note 3)
CONDITIONS
3038fOSCInternal Oscillator Frequency
MINTYPMAXSYMBOLPARAMETER

IN = COM (Note 4)
SHDN= GND
Operating mode, no load
VCLK= 0 or 3V
0.5VSDLSHDNInput Low
2.5VSDHSHDNInput HighPSRRPower-Supply Rejection Ratio
0.21ISHDNShutdown Current
2.73.6VDDSupply Voltage
0.5VILClock Input Low
2.5VIHClock Input High
±13.5±20ICLKClock Output Current
(Internal Oscillator Mode)
kHz
UNITS

SHDNInput Leakage CurrentVSHDN= 0 to VDD0.2±10μA
FILTER CHARACTERISTICS

(VDD= +5V for MAX7409/MAX7410, VDD= +3V for MAX7413/MAX7414, filter output measured at OUT, 10kΩ||50pF load to GND at
OUT, SHDN= VDD, fCLK= 100kHz, 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.
Note 2:
DC insertion gain is defined as ΔVOUT / ΔVIN.
Note 3:
fOSC(kHz) ≅ 30 x 103/ COSC(pF).
Note 4:
PSRR is the change in output voltage from a VDDof 4.5V and a VDDof 5.5V.
CLOCK
POWER REQUIREMENTS
SHUTDOWN
CONDITIONSUNITSMINTYPMAXPARAMETER
IDDSupply Current
ELECTRICAL CHARACTERISTICS—MAX7413/MAX7414 (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= 100kHz, TA= TMINto TMAX, unless otherwise noted. Typical values are at TA= +25°C.)
fIN= 0.5fC-1-0.74
fIN= fC-3.6-3.0-2.4
fIN= 4fC-41.0-35
fIN= 7fC
fIN= 0.5fC
fIN= 3fC
fIN= fC-3.6-3.0-2.4Insertion Gain Relative toGain-47.5-43
fIN= 5fC-70-65
Insertion Gain Relative toGain
BESSEL FILTERS—MAX7409/MAX7413
BUTTERWORTH FILTERS—MAX7410/MAX7414
th-Order, Lowpass, itched-Capacitor FiltersMAX7409/MAX7413
FREQUENCY RESPONSE
(BESSEL)
7409 toc01
INPUT FREQUENCY (kHz)
(d
fC = 1kHz
MAX7410/MAX7414
FREQUENCY RESPONSE
(BUTTERWORTH)
AX7409 toc02
INPUT FREQUENCY (kHz)
(d
fC = 1kHz
MAX7409/MAX7413
PHASE RESPONSE
(BESSEL)
7409 toc05
INPUT FREQUENCY (kHz)
(D
fC = 1kHz
MAX7410/MAX7414
PHASE RESPONSE
(BUTTERWORTH)
AX7409 toc06
INPUT FREQUENCY (kHz)
(D
fC = 1kHz
-1.62043064085101026127148169181.02k
MAX7409/MAX7413
PASSBAND FREQUENCY RESPONSE
(BESSEL)

AX7409 toc03
INPUT FREQUENCY (Hz)
(d
fC = 1kHz
0.52043064085101026127148169181.02k
MAX7410/MAX7414
PASSBAND FREQUENCY RESPONSE
(BUTTERWORTH)

AX7409 toc04
INPUT FREQUENCY (Hz)
(d
fC = 1kHz
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
AX7409 toc07
SUPPLY VOLTAGE (V)
(m
Typical Operating Characteristics

(VDD= +5V for MAX7409/MAX7410, VDD= +3V for MAX7413/MAX7414, fCLK= 100kHz, SHDN= VDD, COM = OS = VDD/ 2, TA= +25°C,
unless otherwise noted.)
LABELfIN
(Hz)
(kHz)
20011k5
fCLK
(kHz)

MEASUREMENT
BANDWIDTH (kHz)
Table A. THD+N vs. Input Signal
Amplitude Plot Characteristics
th-Order, Lowpass,itched-Capacitor FiltersTypical Operating Characteristics (continued)
(VDD= +5V for MAX7409/MAX7410, VDD= +3V for MAX7413/MAX7414, fCLK= 100kHz, SHDN= VDD, COM = OS = VDD/ 2, TA= +25°C,
unless otherwise noted.)
MAX7409
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. INPUT SIGNAL AMPLITUDE
AX7409 toc08
AMPLITUDE (Vp-p)
(d
SEE TABLE A
MAX7410
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. INPUT SIGNAL AMPLITUDE
AX7409 toc09
AMPLITUDE (Vp-p)
(d
SEE TABLE A
MAX7413
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. INPUT SIGNAL AMPLITUDE
7409 toc10
AMPLITUDE (Vp-p)
(d
SEE TABLE A
MAX7414
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. INPUT SIGNAL AMPLITUDE
AX7409 toc11
AMPLITUDE (Vp-p)
(d
SEE TABLE A15020050100250300350
INTERNAL OSCILLATOR PERIOD
vs. LARGE CAPACITANCE

AX7409 toc14
CAPACITANCE (nF)
(mVDD = +5V
VDD = +3V
SUPPLY CURRENT vs. TEMPERATURE
AX7409 toc12
TEMPERATURE (°C)
(m
VDD = +5V
VDD = +3V
INTERNAL OSCILLATOR PERIOD
vs. SMALL CAPACITANCE
AX7409 toc13
CAPACITANCE (pF)
(μVDD = +5V
VDD = +3V
INTERNAL OSCILLATOR FREQUENCY
vs. SUPPLY VOLTAGE
AX7409 toc15
SUPPLY VOLTAGE (V)
(k
COSC = 1000pF
INTERNAL OSCILLATOR FREQUENCY
vs. TEMPERATURE
AX7409 toc16
TEMPERATURE (°C)
(kH
VDD = +5V
VDD = +3V
COSC = 1000pF
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