MAX7427EUA+T Fast Delivery |IC PHOENIX CO.,LIMITED

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 ..
MAX7428EKA-T ,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 BuffersFeaturesThe MAX7428/MAX7430/MAX7432 filters are low-cost, Ideal for CVBS, Y/C (S-Video), and RGB ..
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MB7117E , Schottky TTL 2048-Bit Bipolar Programmable Read-Only Memory

MAX7427EUA+T
5th-Order, Lowpass, Elliptic, Switched-Capacitor Filters
General Description
The 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.
Applications
ADC 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
OUTVDD
CLK
SHDNIN
GND
COM
μMAX/PDIP
TOP VIEW
MAX7426
MAX7427
VDD
CLK
OUT
GND
INPUT
0.1μF
0.1μF
CLOCK
SHDN
OUTPUT
COM
MAX7426
MAX7427
VSUPPLY
Typical Operating Circuit
19-1710; Rev 0; 4/00
Pin Configuration
Ordering Information
PART
MAX7426CUA
MAX7426CPA
MAX7426EUA-40°C to +85°C
0°C to +70°C
0°C to +70°C
TEMP. RANGEPIN-PACKAGE
8 µMAX
8 Plastic DIP
8 µMAX
MAX7426EPA-40°C to +85°C8 Plastic DIP
PARTTRANSITION RATIOOPERATING
VOLTAGE (V)
MAX7426r = 1.25+5
Selector Guide
MAX7427r = 1.25+3
MAX7427CUA
MAX7427CPA
MAX7427EUA-40°C to +85°C
0°C to +70°C
0°C to +70°C8 µMAX
8 Plastic DIP
8 µMAX
MAX7427EPA-40°C to +85°C8 Plastic DIP
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
COSC= 1000pF (Note 3)
VOS= 0 to VDD
SHDN= GND, VCOM= 0 to VDD
(Note 1)= +25°C
Input, COM externally driven
OS to OUT
Measured with respect to COM
fIN= 200Hz, VIN= 4Vp-p,
measurement bandwidth = 22kHz
VIN= VCOM= VDD / 2
VCOM= VDD / 2 (Note 2)
Output, COM internally driven
CONDITIONS
13.517.521.5fOSCInternal Oscillator Frequency
±0.2±10Input Leakage Current at OS
±0.2±10Input Leakage Current at COM500CL1RLResistive Output Load Drive Clock Feedthrough130RCOMInput Resistance at COM
±0.1VOSInput Voltage Range at OS
VDD- 0.2VDDVDD+ 0.22 22
100:1fCLK/fCClock-to-Corner Ratio
0.001 to 9fCCorner-Frequency Range
VDD- 0.5VDDVDD+ 0.52 22
VCOMCOMVoltage Range AOSOffset Voltage Gain
-81THD+NTotal Harmonic Distortion plus
NoiseClock-to-Corner Tempco
0.25VDD- 0.25Output Voltage Range±25VOFFSETOutput Offset Voltage 0.20.4DC Insertion Gain with Output
Offset Removed
MINTYPMAXSYMBOLPARAMETER
0.5VILClock Input Low
4.5VIHClock Input High±12.5ICLKClock Output Current
(internal oscillator mode)
kHz
mVp-p
V/V
ppm/°C
kHz
UNITS
Maximum Capacitive Load
at OUT
FILTER
CLOCK
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.)
CONDITIONSMINTYPMAXSYMBOLPARAMETER
Measured at DC
SHDN= GND
Operating mode, no load
0.5VSDLSHDNInput Low
4.5VSDHSHDNInput HighPSRRPower-Supply Rejection Ratio
0.21ISHDNShutdown Current
0.81.0Supply CurrentIDD
4.55.5VDDSupply Voltage
UNITS
SHDNInput Leakage CurrentVSHDN= 0 to VDD±0.2±10µA
VOSInput Voltage Range at OS130RCOMInput Resistance at COMkΩ
(Note 1)= +25°C
Measured with respect to COM
OS to OUT
fIN= 200Hz, VIN= 2.5Vp-p,
measurement bandwidth = 22kHz
VIN= VCOM= VDD / 2
VCOM= VDD / 2 (Note 2)
CONDITIONS500CL1RLResistance Output Load Drive Clock Feedthrough
±0.1
VDD- 0.1VDDVDD+ 0.12 22VCOMCOMVoltage Range
100:1fCLK/fCClock-to-Corner Ratio
0.001 to 12fCCorner-Frequency RangeAOSOffset Voltage Gain
-79THD+NTotal Harmonic Distortion plus
NoiseClock-to-Corner Tempco
0.25VDD- 0.25Output Voltage Range±25VOFFSETOutput Offset Voltage 0.20.4DC Insertion Gain with Output
Offset Removed
MINTYPMAXSYMBOLPARAMETER
mVp-p
V/V
ppm/°C
kHz
UNITS
Maximum Capacitive Load
at OUT
Input Leakage Current at COMSHDN= GND, VCOM = 0 to VDD±0.2±10µA
Input Leakage Current at OSVOS= 0 to VDD±0.2±10µA
POWER REQUIREMENTS
SHUTDOWN
FILTER CHARACTERISTICS
MAX7426/MAX7427
5th-Order, Lowpass, Elliptic,
Switched-Capacitor Filters
COSC= 1000pF (Note 3)
CONDITIONS
13.517.521.5fOSCInternal Oscillator Frequency
MINTYPMAXSYMBOLPARAMETER
Measured at DC
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
±7.5±12.5ICLKClock Output Current
(internal oscillator mode)
kHz
UNITS
SHDNInput Leakage CurrentVSHDN= 0 to VDD±0.2±10µA
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 ΔVOUT / ΔVIN.
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.
fIN= 0.68fC
fIN= 0.38fC
fIN= 3.25fC
fIN= 1.43fC
fIN= 1.25fC
fIN= 0.87fC
fIN= 0.97fC
fIN= fC
CONDITIONS
Insertion Gain
with DC Gain Error Removed
(Note 4)
UNITSMINTYPMAXPARAMETERIDDSupply Current
CLOCK
POWER REQUIREMENTS
SHUTDOWN
MAX7426/MAX7427
5th-Order, Lowpass, Elliptic,
Switched-Capacitor Filters
FREQUENCY RESPONSE
MAX7426/27-02
INPUT FREQUENCY (kHz)
GAIN (dB)
fC = 1kHz
r = 1.25
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.)
PASSBAND FREQUENCY RESPONSE
MAX7426/27-04
INPUT FREQUENCY (kHz)
GAIN (dB)
fC = 1kHz
r = 1.25
PHASE RESPONSE
MAX7426/27-06
INPUT FREQUENCY (kHz)
PHASE SHIFT (DEGREES)
fC = 1kHz
r = 1.25
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX7426/27-07
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (mA)
SUPPLY CURRENT vs. TEMPERATURE
MAX7426/27-08
TEMPERATURE (°C)
SUPPLY CURRENT (mA)
VDD = +5V
VDD = +3V
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.)
MAX7426
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. INPUT SIGNAL AMPLITUDE
MAX7426/27-10
AMPLITUDE (Vp-p)
THD + NOISE (dB)
SEE TABLE 1.1.00.51.52.02.53.0
MAX7427
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. INPUT SIGNAL AMPLITUDE
MAX7426/27-12
AMPLITUDE (Vp-p)
THD + NOISE (dB)
SEE TABLE 1.
Table 1. THD + Noise Test Conditions
LABELfIN
(Hz)
(kHz)20011k5
fCLK
(kHz)
MEASUREMENT
BANDWIDTH (kHz)

Partno	Mfg	Dc	Qty	Available	Descript
MAX7427EUA+T	MAXIM	N/a	2500	avai	5th-Order, Lowpass, Elliptic, Switched-Capacitor Filters