FEATURES APPLICATIO S TYPICAL APPLICATIO. LTC Low Power 8th Order Pin Selectable Elliptic or Linear Phase Lowpass Filter DESCRIPTIO

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1 FETRES th Order Pin Selectable Elliptic or essel Filter m Supply Current with ±V Supplies d ttenuation at. f CTOFF f CTOFF p to khz (: f CLK to f CTOFF Ratio) µv RMS Wideband Noise with ±V Supplies Operates at Single V Supply with V RMS Input Range Operates p to ±V Supplies TTL/CMOS Compatible Clock Input No External Components vailable in -Pin Dip and -Pin SO Wide Packages PPLICTIO S ntialiasing Filters attery-operated Instruments Telecommunication Filters LTC- Low Power th Order Pin Selectable Elliptic or Linear Phase Lowpass Filter DESCRIPTIO The LTC - is a monolithic th order elliptic lowpass filter featuring clock-tunable cutoff frequency and low power supply current. Low power operation is achieved without compromising noise or distortion performance. t ±V supplies the LTC- uses only m supply current while keeping wideband noise below µv RMS. With a single V supply, the LTC- can provide up to khz cutoff frequency and d signal-to-noise ratio while consuming only.m. The LTC- provides an elliptic lowpass rolloff with stopband attenuation of d at. f CTOFF and an f CLK - to-f CTOFF ratio of : (Pin to ). For a ratio of :, f CTOFF can be clock-tuned up to khz. For a f CLK -tof CTOFF ratio of : (Pin to ), the LTC- provides an elliptic lowpass filter with f CTOFF frequencies up to khz. When Pin is connected to ground, the LTC- approximates an th order linear phase response with d attenuation at. f d and f CLK /f d ratio of :. The LTC- is pin compatible with the LTC-., LT, LTC and LTM are registered trademarks of Linear Technology Corporation. ll other trademarks are the property of their respective owners. TYPICL PPLICTIO khz nti-liasing Elliptic Filter Frequency Response V LTC- V CLK = MHz V V OT - T WIDEND NOISE = µv RMS NOTE: THE CONNECTION FROM PIN TO PIN SHOLD E MDE NDER THE PCKGE. THE POWER SPPLIES SHOLD E YPSSED Y.µF CPCITOR S CLOSE TO THE PCKGE S POSSILE. - T fa

2 LTC- SOLTE XI RTI GS W W W Total Supply Voltage ( to )... V Input Voltage (Note )... (.V) to (.V) Output Short-Circuit Duration... Indefinite Power Dissipation... mw urn-in Voltage... V (Note ) Operating Temperature Range LTC-C... C to C LTC-M (OSOLETE)... C to C Storage Temperature Range... C to C Lead Temperature (Soldering, sec)... C PCKGE/ORDER I FOR W TIO GND GND LP CONNECT TOP VIEW N PCKGE -LED PDIP T JMX = C, θ J = C/W J PCKGE -LED CERDIP T JMX = C, θ J = C/W CONNECT CLK ELL/ESS V OT OSOLETE PCKGE Consider the N Package as an lternate Source ORDER PRT NMER LTC-CN LTC-CJ LTC-MJ GND GND LP CONNECT TOP VIEW SW PCKGE -LED PLSTIC SO T JMX = C, θ J = C/W Order Options Tape and Reel: dd #TR Lead Free: dd #PF Lead Free Tape and Reel: dd #TRPF Lead Free Part Marking: Consult LTC Marketing for parts specified with wider operating temperature ranges. CONNECT CLK ELL/ESS V OT ORDER PRT NMER LTC-CSW ELECTRICL CHRCTERISTICS The denotes specifications that apply over the full operating temperature range, otherwise specifications are at T = C. V S = ±.V, R L = k, T = C, f CLK = khz, TTL or CMOS level (maximum clock rise or fall time µs) and all gain measurements are referenced to passband gain, unless otherwise specified. (f CLK /f CTOFF ) = khz at : and khz at :. PRMETER CONDITIONS MIN TYP MX NITS Passband Gain.Hz to. f CTOFF (Note ) f IN = khz, (f CLK /f C ) = :... d Passband Ripple with V S = Single V Hz to. f C (Table ). to. d Gain at. f CTOFF (Note ) f IN = khz, (f CLK /f C ) = :... d Gain at. f CTOFF (Note ) f IN =.khz, (f CLK /f C ) = :... d Gain at. f CTOFF (Note ) f IN =.khz, (f CLK /f C ) = :... d Gain at f CTOFF (Note ) f IN = khz, (f CLK /f C ) = :... d f IN = khz, (f CLK /f C ) = :... d Gain at. f CTOFF (Note ) f IN =.khz, (f CLK /f C ) = : d Gain at. f CTOFF (Note ) f IN = khz, (f CLK /f C ) = : d Gain with f CLK = khz f IN = Hz, (f CLK /f C ) = :... d Gain with V S = ±.V f IN = khz, f IN = khz, (f CLK /f C ) = :... d f IN = khz, f IN = khz, (f CLK /f C ) = :... d Input Frequency Range (Tables, ) (f CLK /f C ) = : <f CLK / khz (f CLK /f C ) = : <f CLK khz fa

3 LTC- ELECTRICL CHRCTERISTICS The denotes specifications that apply over the full operating temperature range, otherwise specifications are at T = C. V S = ±.V, R L = k, T = C, f CLK = khz, TTL or CMOS level (maximum clock rise or fall time µs) and all gain measurements are referenced to passband gain, unless otherwise specified. (f CLK /f CTOFF ) = khz at : and khz at :. PRMETER CONDITIONS MIN TYP MX NITS Maximum f CLK (Table ) V S ±.V. MHz V S ±V. MHz V S = Single V, GND = V. MHz Clock Feedthrough Input at GND, f = f CLK, Square Wave V S = ±.V, (f CLK /f C ) = : µv RMS V S = ±V, (f CLK /f C ) = : µv RMS Wideband Noise Input at GND, Hz f < f CLK V S = ±.V ± % µv RMS V S = ±.V ± % µv RMS Input Impedance kω Output DC Voltage Swing V S = ±.V ±. ±. V V S = ±V ±. ±. V V S = ±.V ±. ±. V Output DC Offset V S = ±V, (f CLK /f C ) = : ± ± mv Output DC Offset Tempco V S = ±V, (f CLK /f C ) = : ± µv/ C Power Supply Current V S = ±.V, T > C.. m. m V S = ±V, T > C.. m. m V S = ±.V, T > C.. m. m Power Supply Range ±. ± V Note : Stresses beyond those listed under bsolute Maximum Ratings may cause permanent damage to the device. Exposure to any bsolute Maximum Rating condition for extended periods may affect device reliability and lifetime. Note : Connecting any pin to voltages greater than or less than may cause latch-up. It is recommended that no sources operating from external supplies be applied prior to power-up of the LTC-. Note : ll gains are measured relative to passband gain. Note : The cutoff frequency of the filter is abbreviated as f CTOFF or f C. TYPICL PERFOR W CE CHRCTERISTICS Stopband Gain vs Frequency V S = ±V f CLK = khz f C = khz (f CLK /f C ) = : (PIN T ) T = C - G Stopband Gain vs Frequency V S = ±V f CLK = khz (f CLK /f C ) = : (PIN T ) T = C WITH EXTERNL SINGLE POLE LOW- PSS RC FILTER (f d = khz) - G fa

4 LTC- TYPICL PERFOR W CE CHRCTERISTICS Stopband Gain vs Frequency (Linear Phase Response) V S = ±V f CLK = khz f C = khz (f CLK /f C ) = : (PIN T GND) T = C. RESPONSE WITHOT EXTERNL RC FILTER. RESPONSE WITH N EXTERNL SINGLE POLE LOWPSS RC FILTER (f d T khz) Passband Gain and Phase vs Frequency V S = ±V f CLK = khz f C = khz (f CLK /f C ) = : (PIN T ) T = C PHSE (DEG) - G - G Passband Gain vs Frequency. V S = ±V f CLK = khz f C = khz (f CLK /f C ) = : (PIN T ) T = C ( REPRESENT- TIVE NITS) G. Passband Gain and Phase vs Frequency (Linear Phase Response) V S = ±V f CLK = khz f C = khz (f CLK /f C ) = : (PIN T GND) T = C PHSE GIN - G PHSE (DEG) Maximum Passband over Temperature. T = C. T = C D. T = C V S = ±V f CLK = MHz f C = khz (f CLK /f C ) = : (PIN T ) C - G Passband vs Frequency and f CLK V S = ±V (f CLK /f C ) = : (PIN T ) T = C C D INPT. f CLK = khz f CTOFF = khz. f CLK = khz f CTOFF = khz C. f CLK = khz f CTOFF = khz D. f CLK = MHz f CTOFF = khz Passband Gain and Phase vs Frequency and f CLK PHSE V S = ±V f CLK = khz f C = khz (f CLK /f C ) = : (PIN T ) T = C PHSE (DEG). RESPONSE WITHOT EXTERNL SINGLE POLE RC FILTER. RESPONSE WITH N EXTERNL SINGLE POLE LOWPSS RC FILTER (f d T khz) - G - G fa

5 TYPICL PERFOR W CE CHRCTERISTICS LTC Passband vs Frequency and f CLK V S = ±V (f CLK /f C ) = : (PIN T ) T = C C - G. f CLK = khz f CTOFF = khz. f CLK = khz f CTOFF = khz C. f CLK = MHz f CTOFF = khz..... Maximum Passband over Temperature T = C T = C. V S = SINGLE V. (f CLK /f C ) = : GND = V WITH. EXTERNL RC. LOWPSS FILTER (f d = khz). - G GROP DELY (µs) Group Delay vs Frequency (Linear Phase Response) f CLK = khz (f CLK /f C ) = : f C = khz - G GROP DELY (µs) Group Delay vs Frequency. f CLK = khz, (f CLK /f C ) = : WITH EXTERNL RC LOWPSS FILTER (f C = khz). f CLK = khz (f CLK /f C ) = : V S = ±V f C = khz T = C - G THD NOISE (d) THD Noise vs Frequency V S = ±V, = V RMS (k RESISTOR PIN TO ) f CLK = khz, f C = khz (f CLK /f C ) = :, T = C ( REPRESENTTIVE NITS) - G THD NOISE (d) THD Noise vs Frequency V S = ±V, = V RMS, f CLK = khz, f C = khz, (f CLK /f C ) = :, T = C, WITH EXTERNL RC LOWPSS FILTER (f d = khz) ( REPRESENTTIVE NITS) THD NOISE (d) THD Noise vs Frequency V S = SINGLE V, =.V RMS f CLK = khz, f C = khz, (f CLK /f C ) = :, T = C ( REPRESENTTIVE NITS) THD NOISE (d) THD Noise vs Frequency (Linear Phase Response) V S = ±V = V RMS f CLK = khz f C = khz (f CLK /f C ) = : T = C. - G - G - G fa

INPT (V RMS ) CRRENT (m) Power Supply Current vs Power Supply Voltage C C C POWER SPPLY ( OR ) - G - G - G Transient Response Transient Response V/DIV V/DIV ms/div V S = ±.

6 LTC- TYPICL PERFOR THD NOISE (d). THD Noise vs RMS Input (f CLK /f C ) = : OR : f IN = khz, T = C V S = ±V V S = ±.V W INPT (V RMS ) CE CHRCTERISTICS THD NOISE (d) THD Noise vs RMS Input for Single V (f CLK /f C ) = : OR : f IN = khz, T = C. GND =.V. GND = V. INPT (V RMS ) CRRENT (m) Power Supply Current vs Power Supply Voltage C C C POWER SPPLY ( OR ) - G - G - G Transient Response Transient Response V/DIV V/DIV ms/div V S = ±.V, = ±V Hz SQRE WVE f CLK = khz, (f CLK /f C ) = :, f CTOFF = khz ELLIPTIC RESPONSE - G ms/div V S = ±.V, = ±V Hz SQRE WVE f CLK = khz, (f CLK /f C ) = :, f CTOFF = khz LINER PHSE RESPONSE - G PI F CTIO S (-Lead Dual-In-Line Package) (Pins,, ): Pins,, and are not connected to any internal circuit point on the device and should preferably be tied to analog ground. (Pin ): The input pin is connected internally through a k resistor tied to the inverting input of an op amp. GND (Pins, ): The filter performance depends on the quality of the analog signal ground. For either dual or single supply operation, an analog ground plane surrounding the package is recommended. The analog ground plane should be connected to any digital ground at a single point. For dual supply operation, Pins and should be connected to the analog ground plane. For single supply operation Pins and should be biased at / supply and they should be bypassed to the analog ground plane with at least a µf capacitor (Figure ). For single V operation at the highest f CLK of MHz, Pins and should be biased at V. This minimizes passband gain and phase variations (see Typical Performance Characteristics curves: Maximum Passband for Single V, :; and THD Noise vs RMS Input for Single V, :). (Pins, ):The (Pin ) and the (Pin ) should be bypassed with a.µf capacitor to an adequate analog ground. The filter s power supplies should be isolated from other digital or high voltage analog supplies. low noise linear supply is recommended. sing a switching power supply will lower the signal-to-noise ratio of the filter. The supply during power-up should have a slew rate less than V/µs. When is applied before and fa

7 LTC- PI F CTIO S (-Lead Dual-In-Line Package) could go above ground, a signal diode must be used to clamp V. Figures and show typical connections for dual and single supply operation. k k.µf * OPTIONL LTC- *.µf (Pins, ): Pins and should be connected together. In a printed circuit board the connection should be done under the IC package through a short trace surrounded by the analog ground plane. V OT (Pins, ): Pin is the specified output of the filter; it can typically source or sink m. Driving coaxial cables or resistive loads less than k will degrade the total harmonic distortion of the filter. When evaluating the device s distortion an output buffer is required. noninverting k V OT CLOCK SORCE GND DIGITL SPPLY - F Figure. Dual Supply Operation for f CLK /f CTOFF = :.µf µf LTC- Figure. Single Supply Operation for f CLK /f CTOFF = : Table. Clock Source High and Low Threshold Levels POWER SPPLY HIGH LEVEL LOW LEVEL Dual Supply = ±.V.V.V Dual Supply = ±V.V.V Dual Supply = ±.V.V.V Single Supply = V.V.V Single Supply = V.V.V k CLOCK SORCE GND DIGITL SPPLY V OT - F buffer, Figure,can be used provided that its input common mode range is well within the filter s output swing. Pin is an intermediate filter output providing an unspecified th order lowpass filter. Pin should not be loaded. ELLIPTIC/LINER PHSE (Pin ): The DC level at this pin selects the desired filter response, elliptic or linear phase and determines the ratio of the clock frequency to the cutoff frequency of the filter. Pin connected to provides an elliptic lowpass filter with clock-to-f CTOFF ratio of :. Pin connected to analog ground provides a linear phase lowpass filter with a clock- to-f d ratio of : and a transient response overshoot of %. When Pin is connected to the clock-to-f CTOFF ratio is : and the filter response is elliptic. ypassing Pin to analog ground reduces the output DC offsets. If the DC level at Pin is switched mechanically or electrically at slew rates greater than V/µs while the device is operating, a k resistor should be connected between Pin and the DC source. CLK (Pin ): ny TTL or CMOS clock source with a square-wave output and % duty cycle (±%) is an adequate clock source for the device. The power supply for the clock source should not be the filter s power supply. The analog ground for the filter should be connected to clock s ground at a single point only. Table shows the clock s low and high level threshold value for a dual or single supply operation. pulse generator can be used as a clock source provided the high level ON time is greater than.µs. Sine waves are not recommended for clock input frequencies less than khz, since excessively slow clock rise or fall times generate internal clock jitter (maximum clock rise or fall time µs). The clock signal should be routed from the right side of the IC package to avoid coupling into any input or output analog signal path. k resistor between clock source and Pin will slow down the rise and fall times of the clock to further reduce charge coupling, Figures and. k LT, f C < khz LT, f C > khz - F Figure. uffer for Filter Output fa

8 LTC- PPLICTI O S I FOR W TIO Passband Response The passband response of the LTC- is optimized for a f CLK /f CTOFF ratio of :. Minimum passband ripple occurs from Hz to % of f CTOFF. though the passband of the LTC- is optimized for ratio f CLK /f CTOFF of :, if a ratio of : is desired, connect a single pole lowpass RC (f d = f CTOFF ) at the output of the filter. The RC will make the passband gain response as flat as the : case. If the RC is omitted, and clock frequencies are below khz the passband gain will peak by.d at % f CTOFF. Table. Typical Passband Ripple with Single V Supply (f CLK /f C ) = :, GND = V, khz, Fixed Single Pole, Lowpass RC Filter at Pin (See Typical pplications) PSSND FREQEY PSSND GIN (REFEREED TO d) f CTOFF = khz f CTOFF = khz T = C T = C T = C T = C % of f CTOFF (d) (d) (d) (d) f CTOFF.... The gain peaking can approximate a sin χ/χ correction for some applications. (See Typical Performance Characteristics curve, Passband vs Frequency and f CLK at f CLK /f C = :.) When the LTC- operates with a single V supply and its cutoff frequency is clock-tuned to khz, an output single pole RC filter can also help maintain outstanding passband flatness from C to C. Table shows details. Clock Feedthrough Clock feedthrough is defined as, the RMS value of the clock frequency and its harmonics that are present at the filter s output (Pin ). The clock feedthrough is tested with the input (Pin ) grounded and, it depends on PC board layout and on the value of the power supplies. With proper layout techniques the values of the clock feedthrough are shown in Table. Table. Clock Feedthrough V S : : ±.V µv RMS µv RMS ±V µv RMS µv RMS ±.V µv RMS µv RMS Note: The clock feedthrough at ±.V supplies is imbedded in the wideband noise of the filter. (The clock signal is a square wave.) ny parasitic switching transients during the rise and fall edges of the incoming clock are not part of the clock feedthrough specifications. Switching transients have frequency contents much higher than the applied clock; their amplitude strongly depends on scope probing techniques as well as grounding and power supply bypassing. The clock feedthrough, if bothersome, can be greatly reduced by adding a simple R/C lowpass network at the output of the filter (Pin ). This R/C will completely eliminate any switching transient. Wideband Noise The wideband noise of the filter is the total RMS value of the device s noise spectral density and it is used to determine the operating signal-to-noise ratio. Most of its frequency contents lie within the filter passband and it cannot be reduced with post filtering. For instance, the LTC- wideband noise at ±.V supply is µv RMS, µv RMS of which have frequency contents from DC up to the filter s cutoff frequency. The total wideband noise (µv RMS ) is nearly independent of the value of the clock. The clock feedthrough specifications are not part of the wideband noise. Speed Limitations The LTC- optimizes C performance versus power consumption. To avoid op amp slew rate limiting at maximum clock frequencies, the signal amplitude should be kept below a specified level as shown on Table. liasing liasing is an inherent phenomenon of sampled data systems and it occurs when input frequencies close to the sampling frequency are applied. For the LTC- case, an input signal whose frequency is in the range of f CLK ±%, will be aliased back into the filter s passband. If, for instance, an LTC- operating with a khz clock fa

9 LTC- PPLICTI O S I FOR W TIO and khz cutoff frequency receives a.khz, mv RMS input signal, a.khz, µv RMS alias signal will appear at its output. When the LTC- operates with a clock-tocutoff frequency of :, aliasing occurs at twice the clock frequency. Table shows details. Table. Maximum vs V S and f CLK POWER SPPLY MXIMM f CLK MXIMM ±.V.MHz V RMS (f IN > khz) MHz V RMS (f IN > khz) MHz.V RMS (f IN > khz) ±V MHz.V RMS (f IN > khz) MHz.V RMS (f IN > khz) Single V MHz.V RMS (f IN > khz) MHz.V RMS (f IN > khz) Table. liasing (f CLK = khz) INPT FREQEY OTPT LEVEL OTPT FREQEY ( = V RMS ) (Relative to Input) (liased Frequency) (khz) (d) (khz) f CLK /f C = :, f CTOFF = khz (or ).. (or ).. (or )... (or.).. (or )... (or.).. f CLK /f C = :, f CTOFF = khz (or ).. (or ).. (or ).. (or ).. (or )...(or.).. Table. Transient Response of LTC Lowpass Filters DELY RISE SETTLING OVER- TIME* TIME** TIME*** SHOOT LOWPSS FILTER (SEC) (SEC) (SEC) (%) LTC- essel./f C./f C./f C. LTC- Linear Phase./f C./f C./f C LTC- Linear Phase./f C./f C./f C LTC- Linear Phase./f C./f C./f C LTC- Linear Phase./f C./f C./f C LTC- Linear Phase./f C./f C./f C LTC- utterworth./f C./f C./f C LTC- Elliptic./f C./f C./f C LTC- Elliptic./f C./f C./f C LTC- Elliptic./f C./f C./f C * To % ±%, ** % to % ±%, *** To % ±.% INPT % % % td. RISE TIME (t r ) = ±% f CTOFF. SETTLING TIME (t s ) = ±% f (TO % of OTPT) CTOFF TIME DELY (t d ) = GROP DELY (TO % OF OTPT) ts tr Figure. f CTOFF OTPT - F TYPICL PPLICTI O S.µF LTC- th Order Elliptic Lowpass Filter (f CLK /f C ) = : f CLK V OT.µF R C LT NOTES:. OPTIONL OTPT FFER /πrc = ()(f CTOFF ). PINS,, CN E GRONDED OR LEFT FLOTING - T fa

10 LTC- TYPICL PPLICTI O S th Order Elliptic Lowpass Filter (f CLK /f C ) = : th Order Linear Phase Lowpass Filter (f CLK /f C ) = :.µf LTC- f CLK.µF V OT.µF LTC- f CLK.µF V OT - T - T V.µF.µF th Order khz Cutoff, Elliptic Filter Operating with a Single V Supply and Driving k, pf Load k.k LTC- k V f CLK = MHz k V.k pf V LT k V OT pf NOTES:. TOTL SPPLY CRRENT I S = m (EXCLDING OTPT LOD CRRENT). FLT PSSND P TO khz, f d = khz. THD NOISE d, V P-P V P-P, f IN = khz - T Single V, th Order Lowpass Filter f CTOFF = khz V R Ω µf C.µF.µF k k LTC- IC V V.µF LTC- IC V R.k V S = SINGLE V, I S = m TYP TH ORDER LOWPSS FILTER FIXED f CTOFF, f CLK = khz f CTOFF = khz (f CLK /f C ) = : /πrc = /πrc = f CTOFF V OT C.µF f CLK k - T Gain vs Frequency V S = SINGLE V I S = m, TH ORDER ELLIPTIC LOWPSS f CLK = khz f CTOFF = khz THD NOISE (d) THD Noise vs Frequency V S = SINGLE V IS = m, TH ORDER ELLIPTIC LOWPSS =.V RMS f CLK = khz f C = khz - T - T fa

11 LTC- PCKGE DESCRIPTION J Package -Lead CERDIP (Narrow. Inch, Hermetic) (Reference LTC DWG # --) CORNER LEDS OPTION ( PLCS). (.) MIN. (.) MX.. (..) FLL LED OPTION. SC (. SC).. (..) HLF LED OPTION. (.) RD TYP.. (..). (.) MX.. (..).. (..) NOTE: LED DIMENSIONS PPLY TO SOLDER DIP/PLTE OR TIN PLTE LEDS. (.) MIN.. (..).. (..). (.) SC J OSOLETE PCKGE N Package -Lead PDIP (Narrow. Inch) (Reference LTC DWG # --).* (.) MX. ±.* (. ±.).. (..). ±. (. ±.).. (..).. (..) ( ). (.) MIN. (.) MIN. (.). MIN (.) SC NOTE: IHES. DIMENSIONS RE MILLIMETERS *THESE DIMENSIONS DO NOT ILDE MOLD FLSH OR PROTRSIONS. MOLD FLSH OR PROTRSIONS SHLL NOT EXCEED. IH (.mm). (.) TYP. ±. (. ±.) N Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no representation that the interconnection of its circuits as described herein will not infringe on existing patent rights. fa

12 LTC- TYPICL PPLICTION th Order Low Power, Clock-Tunable Elliptic Filter with ctive RC Input ntialiasing Filter and Output Smoothing Filter C.µF R.k C.µF R.k R.k C.µF f C = khz TTENTION T khz = d NOTES:. CLOCK-TNLE OVER ONE DECDE OF CTOFF FREQEY. OTH INPT ND OTPT RC CTIVE FILTERS RE.d CHEYSHEV FILTERS WITH khz RIPPLE NDWIDTH / LT.µF LTC- Hz f C khz khz f CLK khz f CLK R.k.µF R.k C.µF / LT C.µF f C = khz TTENTION T khz = d V OT - T PCKGE DESCRIPTION SW Package -Lead Plastic Small Outline (Wide. Inch) (Reference LTC DWG # --). ±. TYP N. SC. ±... (..) NOTE N. MIN. ±. NOTE.. (..) N/ N/. (.) RD MIN RECOMMENDED SOLDER PD LYOT.. (..) NOTE.. (..) TYP.. (..).. (..)... (.) (..) NOTE SC.... (..) (..) TYP NOTE: IHES. DIMENSIONS IN (MILLIMETERS). DRWING NOT TO SCLE. PIN IDENT, NOTCH ON TOP ND CVITIES ON THE OTTOM OF PCKGES RE THE MNFCTRING OPTIONS. THE PRT MY E SPPLIED WITH OR WITHOT NY OF THE OPTIONS. THESE DIMENSIONS DO NOT ILDE MOLD FLSH OR PROTRSIONS. MOLD FLSH OR PROTRSIONS SHLL NOT EXCEED." (.mm).. (..) S (WIDE) RELTED PRTS PRT NMER DESCRIPTION COMMENTS LTC- Low Power, th Order Elliptic Lowpass Operates from a Single.V to ±V Supply LTC- Very Low Power th Order Elliptic Lowpass Optimized for V/V Single Supply Operation, Consumes m at V Linear Technology Corporation McCarthy lvd., Milpitas, C - () - FX: () - fa LT REV PRINTED IN S LINER TECHNOLOGY CORPORTION

FEATURES DESCRIPTIO APPLICATIO S TYPICAL APPLICATIO. LTC Linear Phase, 8th Order Lowpass Filter

FEATURES DESCRIPTIO APPLICATIO S TYPICAL APPLICATIO. LTC Linear Phase, 8th Order Lowpass Filter LTC6-7 Linear Phase, th Order Lowpass Filter FETRES Steeper Roll-Off Than th Order essel Filters f CTOFF up to khz Phase Equalized Filter in -Pin Package Phase and Group Delay Response Fully Tested Transient