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 ..
MAX270EPP+ ,Digitally-Programmed, Dual 2nd-Order Continuous Lowpass FilterApplications , MAX27OCWP o'c tcy +/0'C 20 Wide so
Lowpass Filering MAXNOEPP MOT) to +as‘c 20 Plast ..
MAX270EWP ,Digitally-Programmed, Dual 2nd-Order Continuous Lowpass Filtersapplications and can
be cascaded for higher-order responses.
The two filter sections are indepe ..
MAX271CNG ,Digitally-Programmed, Dual 2nd-Order Continuous Lowpass FiltersApplications
Anti-Aliasing and Track-and-Hold (MAX271)
Typical Operating Glrcult
FILTER A
..
MAX271CNG+ ,Digitally-Programmed, Dual 2nd-Order Continuous Lowpass FilterFeatures
. Ctmtinuous-Tirtte Filtering - No Clock Required
. Dual 2nd-Order Lowpass Filters
. ..
MAX2720EUP ,1.7GHz to 2.5GHz, Direct I/Q Modulator with VGA and PA DriverFeaturesThe MAX2720/MAX2721 are low-cost, high-performance, RF Frequency Rangedirect I/Q modulator ..
MAX6043AAUT33 ,Precision High-Voltage Reference in SOT23Applications Typical Operating Circuit appears at end of data sheet.Analog-to-Digital ConvertersSel ..
MAX6043AAUT33-T ,Precision High-Voltage Reference in SOT23ELECTRICAL CHARACTERISTICS—V = +2.5VOUT(V = +5V, I = 0, T = T to T . Typical values are at T = +25° ..
MAX6043AAUT50#TG16 ,Precision High-Voltage Reference in SOT23features a proprietary temperature♦ Tight Initial Accuracy: 0.05% (max)coefficient curvature-correc ..
MAX6043BAUT25#TG16 ,Precision High-Voltage Reference in SOT23ApplicationsAnalog-to-Digital ConvertersI.C.*34 INDigital-to-Analog ConvertersSOT23Digital Voltmete ..
MAX6043BAUT33#TG16 ,Precision High-Voltage Reference in SOT23ELECTRICAL CHARACTERISTICS—V = +2.5VOUT(V = +5V, I = 0, T = T to T . Typical values are at T = +25° ..
MAX6043BAUT50#TG16 ,Precision High-Voltage Reference in SOT23Features♦ +2.5V, +3.3V, +4.096V, +5.0V, or +10V OutputThe MAX6043 precision voltage reference provi ..
MAX270CPP+-MAX270CWP+-MAX270EPP+-MAX271CNG+
Digitally-Programmed, Dual 2nd-Order Continuous Lowpass Filter
19-3701; Rev l,' 8/91
2flALilyfitClLdlyil]
Di'giiralllheiProgrannmed, Dual
2nd-Order Continuous Lowpass Filters
General 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 (PP) control or pin strapping.
Cutoff frequencies in the 1kHz to 25kHz range can be
selected.
The MAX27O has an on-board, uncommitted op amp, while
Features
t Continuous-Time Filtering " No Clock Required
. Dual 2nd-Order Lowpass Filters
. Sections Independently Programmable:
1kHz to 25kHz
t 96dB Dynamic Range
t No External Components
. Cascadable for Higher Order
. Low-Power Shutdown Mode
. Track-and-Hold (MAX271)
Ordering Information
the MAX271 has an internal track-and-hold (T/H). --iuiir-" TEMP. R AN GE PlN-P A CK A GE
MAX270CPP 0'C to +70°C 20 Plastic DIP
A p p lie atio n s MAX27OCWP 0°C to +70°C 20 Wide so
Lowpass Filtering MAX27OEPP -40 C to +85 C 20 Plastic DIP
' . . ' MAX27OEWP MO''C to +850 20 Wide so
Anti-Aliasing Filter
, MAX270MJP -55°C to + 125''C W 20 CERDIP
Output smOOth'r‘g ' MAX271CNG 0°C to +70"C 24 Plastic DIP
Low-Noise Applications MAX271CWG (YC to +70"C 24 Wide so
Anti-Aliasing and Track-and-Hold (MAX271) MAX271ENG -40°C to +85''C 24 Plastic DIP
MAX271EWG -40°C to +85''C 24 Wide so
MAX271MRG -55"C to + 125°C 24 CERDIP
Typical Operating Circuit Pin Configurations
AN T - TOPVIEW
V+ GND V- v
opom I q E cm
INA 00TA M) WITH
IN FILTERA Tm (y l/r E E Mi
ANTI-ALIASING 00TA E E 05
W SH-ON E MAXIM li] 04
"le/d" INA E MAX270 E 03
V- LE E 02
OUT oo B FILTERB INS " DAC ty W8 E E 01
OUTPUTSMOOTHING OUTB E 'ij], M)
- - (mo 9 12 A0
A0 00-05 cs wn - E J -
l N l l “E E“
_ - DlP/SO
" Ul PIN-STRAP CONTROL MAX271 configuration on page 15
9MM3COM
Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim's website at wwwmaxim-ic.com.
ELZXVW/OAZXVW
MAX270/MAX2771
iD)'iigiiiitalllhelProgrammedl, Dual
2nd-Order Continuous Lo
ABSOLUTE MAXIMUM RATINGS
V+ to V- ................................. -0,3V, +17V
V+ to GND ............................... -O,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/( above +70°C) ........ 889mW
Wpass [Filters
MAX271:
Plastic DIP (derate 8.7mW/‘C above +70°C) ........ 696mW
Wide so (derate 1 1,7mW/''C above +70°C) ........ 941mW
CERDIP (derate 12.5mW/°C above +70°C) ........ 1000mW
Operating Temperature Ranges:
MAX27_C_ - ........................... DC 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 Ranngs' may cause permanent damage to the dewce, These are stress ratings only, and Iuncnona/
operation of the device at these or any other condmons beyond those Indicated tn the operational sections of the specihcations IS not Implied Exposure to
absolute maximum raring conditions for extended periods may affect dewce reliability
ELECTRICAL CHARACTERISTICS
(V+ = 5V, V- = -5V; TA = +25''C, unless otherwise noted.)
, PARAMETER I CONDITIONS MIN TYP MAX UNITS
FILTER CHARACTERISTICS
Operating Frequency Range (Note 1) 2 MHz
Programmed Cutoff Frequency (fc) 1-25 kHz
to code = 53 (2.536kHz typ) $2.9
Programmed Cutoff Frequency Error %
to code = 127 (25kHz typ) 19.5
fc code = 0 (1kHz typ), “N = 1kHz -36 24
_ . TA = TMIN to TMAX m = 8kHz -33
Filter Gain dB
to code = 127 (25kHz typ), "N = EEEBHZ -6 - ' - '95,
TA = TMIN to TMAX {IN = 200kHz -34
, _ V fc code = O (1kHz typ) 0.15
Maximum Gain (Peaking) dB
to code = 127 (25kHz typ) 0.15
_ . . fc code = O (1kHz typ) 12
Wideband Noise 50Hz to 50kHz Bandwidth % IJVRMS
fc code = 127 (25kHz typ) i 38 j
DC CHARACTERISTICS
DC Output Signal Swing _ _
OUTA, OUTB, OP OUT (MAX270) let - 5ng -3 3 w v
OUTA, OUTB, T/H OUT (MAX271) A - MIN MAX
Offset Voltage at Outputs
OUTA, OUTB, OP OUT (MAX270) -2 2 mV
OUTA. OUTB (MAX271)
DC Input Leakage Current
INA, INB (MAX270) TA = TMIN to TMAX -1 1 11A
INA, INB (MAX271)
2 /VI A X I IVI
