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MAX293CPA+MAXIMN/a5000avai8th-Order, Lowpass, Elliptic, Switched-Capacitor Filters
MAX293ESA+T |MAX293ESATMAXIMN/a169avai8th-Order, Lowpass, Elliptic, Switched-Capacitor Filters
MAX293EWE+N/AN/a2500avai8th-Order, Lowpass, Elliptic, Switched-Capacitor Filters
MAX293EWE+TMAIXMN/a2500avai8th-Order, Lowpass, Elliptic, Switched-Capacitor Filters
MAX294CPA+MAXIMN/a403avai8th-Order, Lowpass, Elliptic, Switched-Capacitor Filters
MAX294CWE+ |MAX294CWEMAXIMN/a10avai8th-Order, Lowpass, Elliptic, Switched-Capacitor Filters
MAX297CWE+TMAIXMN/a2500avai8th-Order, Lowpass, Elliptic, Switched-Capacitor Filters
MAX297EPA+ |MAX297EPAMAXIMN/a202avai8th-Order, Lowpass, Elliptic, Switched-Capacitor Filters
MAX297ESAMAXIMN/a7avai8th-Order, Lowpass, Elliptic, Switched-Capacitor Filters
MAX297EWE+ |MAX297EWEMAXIMN/a8avai8th-Order, Lowpass, Elliptic, Switched-Capacitor Filters


MAX293CPA+ ,8th-Order, Lowpass, Elliptic, Switched-Capacitor Filtersapplications that require maximum bandwidth, and for communication
MAX293CWE ,8th-Order, Lowpass, Elliptic, Switched-Capacitor FiltersFeatures . 8th-Order Lowpass Elliptic Filters t Clock-Tunable Corner-Fre ency Range: u ..
MAX293EPA ,8th-Order, Lowpass, Elliptic, Switched-Capacitor FiltersELECTRICAL CHARACTERISTICS (V+ = 5V, V- = -5V, filter output measured at OUT pin, 20m load resis ..
MAX293ESA+T ,8th-Order, Lowpass, Elliptic, Switched-Capacitor FiltersFeatures . 8th-Order Lowpass Elliptic Filters t CIock-Tunable Corner-Fre uency Range: 0.1 Hz ..
MAX293EWE ,8th-Order, Lowpass, Elliptic, Switched-Capacitor Filtersapplications that require filtering signals in close proximity within the frequency domain. The ..
MAX293EWE+ ,8th-Order, Lowpass, Elliptic, Switched-Capacitor FiltersGeneral Description The MAX293/MAX294/MAX297 are easy-to-use, 8th- order, lowpass, elliptic, sw ..
MAX6145ESA ,SOT23, Low-Cost, Low-Dropout, 3-Terminal Voltage ReferencesELECTRICAL CHARACTERISTICS—MAX6145(V = 4.7V, I = 0mA, T = +25°C, unless otherwise noted.) (Note 1)I ..
MAX614CSA ,Dual-Slot PCMCIA Analog Power ControllersELECTRICAL CHARACTERISTICS(VCCIN = +5V, VPPIN = +12V, T = T to T , unless otherwise noted.)A MIN MA ..
MAX614ESA ,Dual-Slot PCMCIA Analog Power ControllersMAX613/MAX614 19-0188; Rev 0; 11/93Dual-Slot PCMCIAAnalog Power Controllers_______________
MAX6160ESA ,SOT23, Low-Cost, Low-Dropout, 3-Terminal Voltage ReferencesApplicationsMAX6150 are available in 3-pin SOT23 and 8-pin SO3V/5V Systemspackages. The MAX6160 is ..
MAX6160EUS-T ,SOT23, Low-Cost, Low-Dropout, 3-Terminal Voltage References
MAX6161AESA ,1.250 V, precision, micropower, low-dropout, high-output-current, SO-8 voltage referenceFeaturesThe MAX6161–MAX6168 are precision, low-dropout,

MAX293CPA+-MAX293ESA+T-MAX293EWE+-MAX293EWE+T-MAX294CPA+-MAX294CWE+-MAX297CWE+T-MAX297EPA+-MAX297ESA-MAX297EWE+
8th-Order, Lowpass, Elliptic, Switched-Capacitor Filters
19-0020. Rev 06/08
Sith-Order, Lowpass, Elliptic,
Switched-Capacitor Filters
General Description
The MAX293/MAX294/MAX297 are easy-to-use, 8th-
order, lowpass, elliptic, switched-capacitor filters that
can be set up with corner frequencies from 0.1Hz to
25kHz (MAX293/MAX294) or from 0.1Hz to 50kHz
(MAX297),
The MAX293/MAX297'S 1.5 transition ratio provides
sharp rolloff and -80dB of stopband rejection. The
MAX294's 1.2 transition ratio provides the steepest rolloif
and -58dB of stopband rejection. All three filters have
fixed responses, so the design task is limited to select-
ing the clock frequency that controls the filter's corner
frequency.
An external capacitor is used to generate a clock using
the internal oscillator, or an external clock signal can be
used, An uncommitted op amp (noninverting input
grounded) is provided for building a continuous-the
lowpass filter for post-filtering or anti-aliasing. Steep
rolloff and high order make these filters ideal for anti-
aliasing applications that require maximum bandwidth,
and for communication applications that require filtering
signals in close proximity within the frequency domain.
The MAX293/MAX294/MAX297 are available in 8-pin DIP
and 16-pin wide so packages, delivering aggressive
performance from a tiny area.
Applications
Data-Acquisition Systems
Anti-Aliasing
DAC Post-Filtering
Voice/Data Signal Filtering
Typical Operating Circuit
INPUT _ir IN OUT L, OUTPUT
MAXIM OPOUTti‘
MAX293
1 MAX294
CLOCK - -0IN MAX297 0pm. .Lt
GND V-
PIN CONFIGURATION IS 8-PlN DIP.
AM] MlftClLAlA]
Features
. Sth-Order Lowpass Elliptlc Filters
t Clock-Tunable Corner-Fre uency Range:
0.1 Hz to 25kHz (MAX293/ AX294)
0.1Hz to 50kHz (MAX297)
. No External Resistors or Capacitors Required
. Internal or External Clock
. Clock to Corner Frequency Ratio:
100:1 (MAX293/294)
50:1 (MAX297)
. Operate with a Single o5V Supply or Dual iSV
Supplies
. Uncommitted Op Amp for Anti-Aliasing or
Clock-Nolse Filtering
. 8-Pin DIP and 16-Pln Wide SO Packages
Ordering Information
TEMP. RANGE PIN-PACHG‘
'TvtAX293CPA - o"c to -+77rc" ip7asti2ToF "-j
I MAX2930WE__ ~01: BTUC - 16 Me fo--;
jviAr1i'iiiiif, - m 10ic Dice" - LT
MAX293EPA -4o°c to +7ser'c" a Plastic DTP-
MAX_293EWE‘ @1535" 7—53 vVTasb' -
LslA)r2s_esu7 --5st7to +5°c - mu;
MAX294CPA EC to +70°c 8 Plastic DIP
VAEMCWE -r" 0°C to +7o°c‘ "frvviriiTo" - 7
l MAx29§c_/D - Ottom’c'igg' - j:1
Ordering information continued on last page.
. Contact factory for dice specifications.
.. Contact factory for availability and processing to MIL-STO-MY,
Pin Configurations
TOP VIEW
-h..e'"'"
CLK 'ri . 7 IN
H MAXIM
2 MAX293 "
DPOUT if) MAX294 GND
OPIN- T, MAX297 OUT
EWTEI‘EI
Wide SO on last page
lVl/JXI/Vl
Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim's website at .

LGZXVW/WGZXVW/EGZXVW
8th-Order, Lowpass, Elliptic,
Switched-Capacitor Filters
ABSOLUTE MAXIMUM RATINGS
Supply Voltage (V+ to V-) ...................... .1V Operating Temperature Ranges:
Input Voltage at Any Pin ....... (V- - 0.3V) S VIN s (V+ + 0.3V) MAX29_C_ ............................ DC to +70"C
Continuous Power Dissipation MAX29_E_ ............. . .......... -40°C to +85''C
8-Pin Plastic DIP (derate 9.09mWf'C above +70°C) . . .727mW MAX29_MJA .............. _ _ ....... -55°C to +125°C
16-Pin Wide so (derate 9.52mW/“C above +70°C) ' _ .762mW Storage Temperature Range .............. -65''C to +160°C
8-Pin CERDIP (derate &00mW/T) above +70''C) ..... 640mW Lead Temperature (soldering, 10 sec) .............. +300"C
Stresses be/ond those listed under 'Absolule Maximum Ratings"may cause permanent damage to the dewce. These are stress ratings only, and functional
operation o the device al these or any other condillons beyond those indicated Ithe operational sections of the specifications IS not 1mpl1ed. Exposure to
absolute maximum rating conditions for extended periods may affect dewce whammy.
ELECTRICAL CHARACTERISTICS
(V+ = W, V- = -5V, filter output measured at OUT pin, 20kn load resistor to ground at OUT, fCLK = 100kHz (MAX293/MAX294) or
iCLK = 50kHz (MAX297) TA = TMIN to TMAX, unless otherwise noted.)
MAX293/MAX294/[WAX297
PARAMETER I commons JV MIN _ TYP MAX UNITS
FILTER CHARACTERISTICS
Corner-Frequency Range MAX293/MAX294 (11-25k Hz
MAX297 0.1-50k
Clock to Corner MAX293/MAX294 100:1
Frequency Ratio M AX297 50:1
Clock to Corner MAX293 8 1
Frequency Tempco MAX294 7 ppm/ C
MAX297 4
”le = 0.381% 0n2 -0. 10 -0.17
fIN = 0.594Fo O 12 _0.02 _ -0.17
fIN = 0.759F0 J12 -0.11 -0.17
M = 0.866Fo 0.12 -0.03 - -O.17
M = 0.939Fo Q12 -0_11 -0,17
MAM” 1111 = 0.993Fo 0.22 J04 -0.17
IIN = 1.000F0 0.22 0.01 _ -0.17
- fIN = 1.500Fo -73 -78
Insertion Gain Relative to , flN = 1510% -80 -87
DC Gain (Note 1) m = 2.020% -80 -84
_ le =4.020% - -80 -84 t dB
hr: = (1425Fo 0.10 -O.11 -0.17
fo = (1644Fo 0.10 0.02 A),17 -
_hr; , 0.802% 0.10 -0.10 -0.17 -
m = 0.895130 0.10 -0.03 -O.17
M = C1946Fo 0.10 -0.07 -O.17 -
MAX294 m = 0.994% 0.38 0.16 All
m = 1.000% 036 0.13 - - .017 -
M = 1.200150 -49 -54
1W = 1.270% -57 -62 -
f|N = IE30Fo -57 -60
L, - -AN = 2.340% -57 -60 - _
2 MAXIM
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