MAX270CPP ,Digitally-Programmed, Dual 2nd-Order Continuous Lowpass FiltersGeneral Description
The MAX270/MAX271 are digitally-programmed, dual
second-order continuous-ti ..
MAX270CPP+ ,Digitally-Programmed, Dual 2nd-Order Continuous Lowpass FilterWuan-eDem.
39-370rpReut,6l9t
Digitally-Programmed, Dual
lVI/JXI/VI
2nd-Order Continuous ..
MAX270CWP ,Digitally-Programmed, Dual 2nd-Order Continuous Lowpass FiltersELECTRICAL CHARACTERISTICS
(V+ = 5V, V- = -5V; TA = +25°C, unless otherwise noted.)'
PARAMETE ..
MAX270CWP+ ,Digitally-Programmed, Dual 2nd-Order Continuous Lowpass FilterGeneral Description
The MAX270/MAX271 are digitally-programmed, dual
second-order contmuous-tlm ..
MAX270EPP ,Digitally-Programmed, Dual 2nd-Order Continuous Lowpass FiltersFeatures
. Conunuous-Tlmo Flltorlng " No Clock Required
. Dual 2nd-Ordor Lowpass Flltors
. Soc ..
MAX270EPP+ ,Digitally-Programmed, Dual 2nd-Order Continuous Lowpass FilterApplications MAX271CWG 0'C to +7o'c 24 Wide so
Anti-Aliasing and Track-and-Hold (MAX271) MAX271ENG ..
MAX603ESA+ ,5V/3.3V or Adjustable, Low-Dropout, Low-IQ, 500mA Linear RegulatorsFeatures' 500mA Output Current, with Foldback CurrentThe MAX603/MAX604 low-dropout, low quiescent c ..
MAX603ESA+T ,5V/3.3V or Adjustable, Low-Dropout, Low-IQ, 500mA Linear RegulatorsGeneral Description ________
MAX603ESA+T ,5V/3.3V or Adjustable, Low-Dropout, Low-IQ, 500mA Linear RegulatorsApplicationsMAX604EPA -40°C to +85°C 8 Plastic DIP5V and 3.3V RegulatorsMAX604ESA -40°C to +85°C 8 ..
MAX6043AAUT10#G16 ,Precision High-Voltage Reference in SOT23features a proprietary temperature♦ Tight Initial Accuracy: 0.05% (max)coefficient curvature-correc ..
MAX6043AAUT25#TG16 ,Precision High-Voltage Reference in SOT23ApplicationsAnalog-to-Digital ConvertersI.C.*34 INDigital-to-Analog ConvertersSOT23Digital Voltmete ..
MAX6043AAUT25#TG16 ,Precision High-Voltage Reference in SOT23applications. The supply-independent,low supply current makes the MAX6043 ideal for bat-+tery-opera ..
MAX270CPP-MAX270CWP-MAX270EPP-MAX270EWP-MAX271CNG
Digitally-Programmed, Dual 2nd-Order Continuous Lowpass Filters
19-3701; Rev 1; 3/91
2fiyihdfDClLdiyfl
ibNtynalllltrlPiiaairaiiiniiintcrdl, iPeall
Ahehtthda)r (thtt)IiiftiiInigangt, Lowpasiss FlilliltMistis
Gonoral Description
The MAX270/MAX271 are digitally-programmed, dual
second-order continuous-time Iowpass filters. Their typi-
cal dynamic range of 96dB surpasses most switched
capacitor filters which require additional filtering to re-
move clock noise, The MAX270/MAX271 are ideal for
anti-aliasing and DAC smoothing applications and can
be cascaded for higher-order responses.
The two filter sections are independently programmable
by either microprocessor (Isp) control or pin strapping.
Cutoff frequencies in the 1kHz to 25kHz range can be
selected.
Features
. ContlnuttutFT1nto Filtering - No Clock Roqulrod
. Dual 2ndAhdor Lowpaos Flltoro
0 Sections Irtdttpondontly Programmable:
Ikte to 25m:
. 96dB Dynamic Range
0 No External Components
. Camdablo for Higher Order
. Low-Power Shutdown Mode
0 TrattkqtrttrHttid (MAX271)
The MAX270 has an on-board, uncommitted op amp, while Ordering Information
the MAX271 has an internal track-and-hold (T " P ART TEMP. RANGE PIN-PACKAGE
MAX27OCPP cc to +700 20 Plastic DIP
Applications MAX27OCWP O'C to +70'C 20 Wide SO
Lowpass Filtering MAX270EPP MO c Io +85 C 20 Plastic DIP
. . . . MAX27OEWP -40'C to +85'C 20 Wide so
Anti-Aliasing Filter . .
. MAX27OMJP -55 c to +125 C 20 CERDIP
Output Smoothing MAX271CNG O'C to +70'C 24 Plastic DIP
Low-Noise Applications MAX271CWG tyt to not 24 Wide so
Anti-Aliasing and Track-and-Hold (MAX271) MAX271ENG -40''C to +850 24 Plastic DIP
MAX271EWG -40'C to +85°C 24 Wide so
MAX271MRG -55°c to +1250 24 CERDIP
Typical Operating Circuit An Configurations
Mill Fl T - TOPVIEW
v eno v- V
+ 0P om E] . El opm
INA cum
IN - FILTERA 'Nr" ty " E E i)6
ANTI-ALIASING 00TA E GI 05
5W E MAXIM E N
Wmm Wh E MAX270 E] 03
ll- [E Cs] D2
OUT ours FILTERS «fl DAC ty 'N5 E E Ol
00TPlmN00THW6 oma E E] D0
_ - GND E Ti] A0
At) D0-06 cs wn - -
l w I l “E (EC-s
f - DlP/SO
Is on PlN-STRAP CONTROL MAX271 configuration on page 15
MAXIM Maxim Integrated Products 1
Call toll free $AttttNSBtbatNttt for free samples or literature.
E&ZXWD’H/(wlzww
MM270MAX27‘H
©h'gnalllltpslPr'otgi'aiiniiinanll, @Mall
thntilMhsdltMis (thg)iiiahntya)gptit Lawpasss Fillitcatrs
ABSOLUTE MAXIMUM RATINGS
V+ to V- .................................. -0.3V. +17V
V+ to GND ............................... -0.3V. +8.5V
V- to GND ................................ +0.3V. -8.5V
Input Voltage to GND, Any Input Pin ..... V- -0.3V, V+ +0.3V
Duration of Output Short Circuit to GND ........... Indefinite
Continuous Total Power Dissipation (TA = +70'C)
MAX270:
Plastic DIP (derate 8mW/' C above +70"C) ......... 640mw
Wide so (derate 10mW/'C above +70'C) ......... 800mw
CERDIP (derate 11.1mW/‘C above +70'C) ........ 889mW
MAX271:
Plastic DIP (derate 8.7mWI" C above +70'C) ........ 696mW
Wide SO (derate 11.7rnW/% above +70'C) ........ 941mW
CERDIP (derate 12.5mW/'C above +70'C) ........ 1000mw
Operating Temperature Ranges:
MAX27_C_ - ........................... JC to +70'C
MAX27_E_ - ........................... M0'C to +85'C
MAX27_M_ - ......................... -55'C to +125'C
Storage Temperature Range .............. -65'C to +165'C
Lead Temperature (soldering, 10 sec) .............. +300'C
Stresses beyond those listed under 'Absolute Maximum Ratings' may cause permanent damage to the gevice. These are stress ratings any. and functional
operation a 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 de vice reliability.
ELECTRICAL CHARACTERISTICS
(V+ = 5V, V- = -5V; TA = +2S'C, unless otherwise noted.)'
PARAMETER I CONDITIONS MIN TYP MAX [UNITS
FILTER CHARACTERISTICS
Operating Frequency Range (Note 1) 2 MHz
Programmed Cutoff Frequency (fc) -
Range 1 25 kHz
to code = 53 (2.536kHz typ) 12.9
Programmed Cutoff Frequency Error %
fc code = 127 (25kHz typ) 19.5
fC code = o (1kHz typ), le = 1KH2 -3.6 -2.4
TA = TMIN to TMAX m = am -33
Filter Gain dB
to code = 127 (25kHz typ), fIN = 25kHz -6 -0.5
TA = TMIN to TMAX m = 200kHz -34
f d = 0 1kH 0.15
Maximum Gain (Peaking) C co e ( pr) dB
fc code = 127 (25kHz typ) 0.15
. . ' fc code = 0(1kHz typ) 12
Wideband Noise 50Hz to 50kHz Bandwidth anMs
fc code = 127 (25kHz typ) 38
Dc CHARACTERISTICS
DC Output Signal Swing -
OUTA, OUTB, OP OUT (MAX270) $0} - t''i -3 3 v
OUTA, OUTB, T/H OUT (MAX271) A - MIN MAX
OffsetVolta e at Outputs
OUTA, OUT ' OP OUT (MAX270) -2 2 mV
OUTA, OUTB (MAX271)
DC Input Leakage Current
INA, INB MAX2 0 TA = TMIN to TMAX -1 1 pA
INA, INB MAX271
