ltc 1065_filtro 5 ordem

8/10/2019 Ltc 1065_filtro 5 Ordem

1/161

LTC1062

1062fd

10Hz 5th Order Butterworth Lowpass Filter Filter Amplitude Response and Noise

Lowpass Filter with No DC Error Low Passband Noise Operates DC to 20kHz Operates On a Single 5V Supply or Up to8V 5th Order Filter Maximally Flat Response Internal or External Clock Cascadable for Faster Rolloff Buffer Available

The LTC1062 is a 5th order all pole maximally flalowpass filter with no DC error. Its unusual architecturputs the filter outside the DC path so DC offset and lofrequency noise problems are eliminated. This makes thLTC1062 very useful for lowpass filters where DC accurais important.

The filter input and output are simultaneously taken acrosan external resistor. The LTC1062 is coupled to the signthrough an external capacitor. This RC reacts with thinternal switched capacitor network to form a 5th orde

rolloff at the output.The filter cutoff frequency is set by an internal clock thcan be externally driven. The clock-to-cutoff frequenratio is typically 100:1, allowing the clock ripple to easily removed.

Two LTC1062s can be cascaded to form a 10th order quamax flat lowpass filter. The device can be operated wisingle or dual supplies ranging from2.5V to9V.

The LTC1062 is manufactured using Linear Technologyenhanced LTCMOSTM silicon gate process.

60Hz Lowpass Filters Antialiasing Filter Low Level Filtering Rolling Off AC Signals from High DC Voltages Digital Voltmeters Scales Strain Gauges

LTCMOS is a trademark of Linear Technology Corporation.

FB

AGND

V

DIVIDERRATIO

BOUT

OUT

V+

COSC

1

2

3

4

8

7

6

5

LTC1062

COSC=3900pF

1062 TA01

1FVIN

25.8k

V+ = 5V

V = 5V

DC ACCURATEOUTPUT

BUFFEREDOUTPUT

NOTE: TO ADJUST OSCILLATOR FREQUENCY,USE A 6800pF CAPACITOR IN SERIESWITH A 50k POT FROM PIN 5 TO GROUND

INPUT FREQUENCY (Hz)1

100

A M P L I T U D E R E S P O N S E ( d B )

80

60

40

20

10 100

1062 TA02

0

90

70

50

0

F I L T E R

O U T P

U T N

O I S E

( V

/ H z

) 20

40

10

30

50

30

10COSC = 3900pF

FEATURES DESCRIPTIO U

APPLICATIO SU

TYPICAL APPLICATIO U

, LTC and LT are registered trademarks of Linear Technology Corporation.

5th Order Lowpass Filter


2/162

LTC1062

1062fd

Total Supply Voltage (V+ to V) ............................... 18VInput Voltage at Any Pin ..... V 0.3V VIN V+ + 0.3VOperating Temperature Range

LTC1062M(OBSOLETE)............. 55C TA 125CLTC1062C ................................... 40C TA 85C

Storage Temperature Range ................. 65C to 150CLead Temperature (Soldering, 10 sec)................. 300C

(Note 1)

The denotes specifications which apply over the full operating tempera-ture range, otherwise specifications are at TA = 25C. V+ = 5V, V = 5V, unless otherwise specified. AC output measured at Pin 7,Figure 1.

Consult LTC Marketing for parts specified with wider operating temperature ranges.

PARAMETER CONDITIONS MIN TYP MAX

Power Supply Current COSC (Pin 5 to V, Pin 11 in SW16) = 100pF 4.5 7 mA 10 mA

Input Frequency Range 0 to 20 kHz

Filter Gain at fIN = 0 fCLK = 100kHz, Pin 4 (Pin 6 in SW16) at V+, 0.00 dBfIN = 0.5fC (Note 2) C = 0.01F, R = 25.78k 0.02 0.3 dBfIN = fC 2 3.00 dBfIN = 2fC 28 30.00 dBfIN

= 4fC

52 60.00 dB

Clock-to-Cutoff Frequency Ratio, fCLK /fC fCLK = 100kHz, Pin 4 (Pin 6 in SW16) at V+, 100 1 %C = 0.01F, R = 25.78k

Filter Gain at fIN = 16kHz fCLK = 400kHz, Pin 4 at V+, C = 0.01F, R = 6.5k 43 52 dB

fCLK /fC Tempco fCLK = 400kHz, Pin 4 at V+, C = 0.01F, R = 6.5k 10 ppm/C

Filter Output (Pin 7, Pin 13 in SW16) DC Swing Pin 7/Pin13 (SW16) Buffered with an External Op Amp 3.5 3.8 V

Clock Feedthrough 1 mVP-P

PACKAGE/ORDER I FOR ATIOU UW

ORDER PARTNUMBER

LTC1062CN8

TJ MAX= 100C, JA= 130C/W

TJ MAX= 150C, JA= 90C/W

LTC1062CSW

ORDER PARTNUMBER1

2

3

4

5

6

7

8

TOP VIEW

SW PACKAGE16-LEAD PLASTIC SO

16

15

14

13

12

11

10

9

NC

NC

FB

AGND

V

NC

NC

NC

NC

BOUT

OUT

V+

COSC

NC

NC

DIVIDERRATIO

1

2

3

4

8

7

6

5

TOP VIEW

FB

AGND

V

DIVIDERRATIO

BOUT

OUT

V+

COSC

N8 PACKAGE8-LEAD PDIP

J8 PACKAGE 8-LEAD CERDIPTJ MAX= 150C, JA= 100C/W

LTC1062MJ8LTC1062CJ8

OBSOLETE PACKAGEConsider the N8 Package as an Alternate Source

ELECTRICAL CHARACTERISTICS

ABSOLUTE AXI U RATI GS W W W U


3/163

LTC1062

1062fd

The denotes specifications which apply over the full operating tempera-ture range, otherwise specifications are at TA = 25C. V+ = 5V, V = 5V, unless otherwise specified, AC output measured at Pin 7,Figure 1.

PARAMETER CONDITIONS MIN TYP MAX

Internal BufferBias Current 2 50 pA

170 1000 pA

Offset Voltage 2 20 mV

Voltage Swing RLOAD = 20k 3.5 3.8 V

Short-Circuit Current Source/Sink 40/3 mA

Clock (Note 3)

Internal Oscillator Frequency COSC (Pin 5 to V, Pin 11 in SW16) = 100pF 25 32 50 kH 15 65 kHz

Max Clock Frequency 4 MH

Pin 5 (Pin 11 in SW16) Source or Sink Current 40 80 A

Note 1: Absolute Maximum Ratings are those values beyond which the life ofa device may be impaired.Note 2: fC is the frequency where the gain is 3dB with respect to the inputsignal.

Note 3: The external or driven clock frequency is divided by either 1, 2 odepending upon the voltage at Pin 4. For the N8 package, when Pin 4 = V+,ratio = 1; when Pin 4 = GND, ratio = 2; when Pin 4 = V, ratio = 4.

Amplitude Response Normalizedto the Cutoff Frequency

fIN /fC0.1

100

R E S P O N S E ( d B )

80

60

40

20

1 10

1062 G01

0

90

70

50

30

101

2 RC=

VS = 2.5VTA = 25C

fC1.62

fCLK = 500kHz, fC = 5kHzfCLK = 250kHz, fC = 2.5kHz

fCLK = 100kHz, fC = 1kHz

fCLK = 1kHz, fC = 10Hz


fIN /fC0.1

100

R E S P O N S E ( d B )

80

60

40

20

1 10

1062 G01

0

90

70

50

30

101

2 RC=

VS = 2.5VTA = 25C

fC1.62

fCLK = 500kHz, fC = 5kHzfCLK = 250kHz, fC = 2.5kHz

fCLK = 100kHz, fC = 1kHz



fIN /fC

1.0

0.4

0.6

0.8

0.4

0.2

0

0.2

1062 G03

P A S S B A N D

G A I N

( d B )

0.1 0.2 0.4 0.6 0.8 1

VS = 5VTA = 25 CfCLK = 100kHz

12 RC

=fC

1.6

12 RC

=fC

1.62 12 RC

=fC

1.64

Amplitude Response Normalizedto the Cutoff Frequency

Passband Gainvs Input Frequency

ELECTRICAL CHARACTERISTICS

TYPICAL PERFOR A CE CHARACTERISTICS U W


4/164

LTC1062

1062fd

Passband Gainvs Input Frequency and Temperature

Passband Phase Shiftvs Input Frequency Filter Noise Spectral Density

fIN /fC

1.0

0.4

0.6

0.8

0.4

0.2

0

0.2

1062 G04

P A S S B A N D

G A I N

( d B )

0.1 0.2 0.4 0.6 0.8 1

VS = 5VfCLK = 100kHz

12 RC

=fC

1.62TA = 125 C

TA = 55 C

fIN /fC

210

120

150

180

0

30

60

90

1062 G05

P H A S E S H I F T ( D E G )

0.1 0.2 0.4 0.6 0.8 1


12 RC

=fC

1.62TA = 25C

CUTOFF FREQUENCY (Hz)

20 F I L T E R O U T P U T N O I S E ( V / H z )

30

50

7080

0.1 10 100 10k

1062 G06

10

1 1k

60

40

0

VS = 5VTA = 25C

fC = 10Hz

fC = 1kHz

fC = 100Hz

Normalized Oscillator Frequency,fOSC vs Supply Voltage

Oscillator Frequency, fOSCvs Ambient Temperature

VSUPPLY (V)4

O S C I L L

A T O R F R E Q U E N C Y N O R M A L I Z E D

T O f O

S C

A T 5

V S U P P L Y

1.1

1.2

1.3

20

1062 G07

1.0

0.9

0.78 12 16 186 10 14

0.8

1.6

1.5

1.4

AMBIENT TEMPERATURE (C)50

60

O S C I L L A T O R F R E Q U E N C Y ( k H z )

80

120

140

160

260

200

0 50 75

1062 G08

100

220

240

180

25 25 100 125

COSC = 0pF

V+ = 10VV = 0V

V+ = 5VV = 0V

Power Supply Currentvs Power Supply Voltage

POWER SUPPLY VOLTAGE (V)4

S U P P L Y C U R R E N T ( m A )

8

12

20

1062 G09

4

08 12 166 10 14 18

16

6

10

2

14TA = 55C

TA = 25C

TA = 125C

TYPICAL PERFOR A CE CHARACTERISTICS U W


5/165

LTC1062

1062fd

8

7

6

5

1

2

3

4

SWITCHEDCAPACITORNETWORK

CLOCK GEN

1, 2, 4 OSC

BOUT

OUT

V+

COSC1062 BD

V

AGND

FB

fCLK

1

BY CONNECTING PIN 4 TO V+, AGND OR V, THEOUTPUT FREQUENCY OF THE INTERNAL CLOCKGENERATOR IS THE OSCILLATOR FREQUENCY DI-VIDED BY 1, 2, 4. THE (fCLK /fC) RATIO OF 100:1 ISWITH RESPECT TO THE INTERNAL CLOCK GENERA-TOR OUTPUT FREQUENCY. PIN 5 CAN BE DRIVENWITH AN EXTERNAL CMOS LEVEL CLOCK. THELTC1062 CAN ALSO BE SELF-CLOCKED BY CON-NECTING AN EXTERNAL CAPACITOR (COSC) TOGROUND (OR TO V IF COSC IS POLARIZED). UNDERTHIS CONDITION AND WITH5V SUPPLIES, THEINTERNAL OSCILLATOR FREQUENCY IS:

fOSC 140kHz [33pF/(33pF + COSC)]

AC TEST CIRCUIT

FB

AGND

V

DIVIDERRATIO

BOUT

OUT

V+

COSC

1

2

3

4

8

7

6

5

LTC10620.1F

MEASUREDOUTPUT

7

48

1

6

0.1F

1062 F01

C = 0.01F

VIN R = 25.8k

50

5V

5V

2

3

5V

5V

fCLK = 100kHz

5VV = 5V

R

+LTC1052

12 RC

FOR BEST MAX FLAT APPROXIMATION,THE INPUT RC SHOULD BE SUCH AS:

A 0.5k RESISTOR, R , SHOULD BE USED IFTHE BIPOLAR EXTERNAL CLOCK IS APPLIEDBEFORE THE POWER SUPPLIES TURN ON

11.63

fCLK100

=

For Adjusting Oscillator Frequency, Insert a 50k Pot in Series with COSC. Use Two Times Calculated COSC

Figure 1

BLOCK DIAGRA W


6/166

LTC1062

1062fd

Filter Input Voltage Range

Every node of the LTC1062 typically swings within 1V of

either voltage supply, positive or negative. With the appro-priate external (RC) values, the amplitude response of allthe internal or external nodes does not exceed a gain of0dB with the exception of Pin 1. The amplitude responseof the feedback node (Pin 1) is shown in Figure 2. For aninput frequency around 0.8 fC, the gain is 1.7V/V and, with5V supplies, the peak-to-peak input voltage should notexceed 4.7V. If the input voltage goes beyond this value,clipping and distortion of the output waveform occur, butthe filter will not get damaged nor will it oscillate. Also, theabsolute maximum input voltage should not exceed the

power supplies.

Typical Performance Characteristics. The decrease of thmaximum attenuation is due to the rolloff at highefrequencies of the loop gains of the various internafeedback paths and not to the increase of the noise floorFor instance, for a 100kHz clock and 1kHz cutoff frquency, the maximum attenuation is about 64dB. A 4kH1VRMS input signal will be predictably attenuated by 60dat the output. A 6kHz, 1VRMS input signal will be attenu-ated by 64dB and not by 77dB as an ideal 5th ordemaximum flat filter would have dictated. The LTC10output at 6kHz will be about 630VRMS. The measuredRMS noise from DC to 17kHz was 100VRMS which is16dB below the filter output.

COSC, Pin 5The COSC, Pin 5, can be used with an external capacitorCOSC, connected from Pin 5 to ground. If COSC is polarizedit should be connected from Pin 5 to the negative supplyPin 3. COSC lowers the internal oscillator frequency. IPin 5 is floating, an internal 33pF capacitor plus thexternal interpin capacitance set the oscillator frequencaround 140kHz with5V supply. An external COSC willbring the oscillator frequency down by the ratio (33pF(33pF + COSC). The Typical Performance Characteristic

curves provide the necessary information to get the internal oscillator frequency for various power supply rangePin 5 can also be driven with an external CMOS clockoverride the internal oscillator. Although standard 740series CMOS gates do not guarantee CMOS levels with tcurrent source and sink requirements of Pin 5, they will, ireality, drive the COSC pin. CMOS gates conforming tostandard B series output drive have the appropriate volage levels and more than enough output current tosimultaneously drive several LTC1062 COSC pins. Thetypical trip levels of the internal Schmitt trigger whi

input is Pin 5, are given in Table 1.Table 1

VSUPPLY VTH+ VTH

2.5V 0.9V 1V

5V 1.3V 2.1V

6V 1.7V 2.5V

7V 1.75V 2.9V

fIN /fC0.1

14

V P I N 1

/ V I N

( d B )

10

6

2

2

1 10

1062 F02

6

12

8

4

0

4 12 RC

=fC

1.62

VS = 5V

Figure 2. Amplitude Response of Pin 1

Internal Buffer

The internal buffer out (Pin 8) and Pin 1 are part of thesignal AC path. Excessive capacitive loading will causegain errors in the passband, especially around the cutofffrequency. The internal buffer gain at DC is typically0.006dB. The internal buffer output can be used as a filteroutput, however, it has a few millivolts of DC offset. Thetemperature coefficient of the internal buffer is typically1V/ C.

Filter Attenuation

The LTC1062 rolloff is typically 30dB/octave. When theclock and the cutoff frequencies increase, the filtersmaximum attenuation decreases. This is shown in the

APPLICATIO S I FOR ATIO W U U U


7/167

LTC1062

1062fd

Divide By 1, 2, 4 (Pin 4)

By connecting Pin 4 to V+, to mid supplies or to V, the

clock frequency driving the internal switched capacitornetwork is the oscillator frequency divided by 1, 2, 4respectively. Note that the fCLK /fC ratio of 100:1 is withrespect to the internal clock generator output frequency.The internal divider is useful for applications where octavetuning is required. The2 threshold is typically1V fromthe mid supply voltage.

Transient Response

Figure 3 shows the LTC1062 response to a 1V input step.

Filter Noise

The filter wideband RMS noise is typically 100VRMS for

5V supply and it is nearly independent from the value the cutoff frequency. For single 5V supply the RMS noiis 80VRMS. Sixty-two percent of the wideband noise is ithe passband, that is from DC to fC. The noise spectraldensity, unlike conventional active filters, is nearly zero ffrequencies below 0.1 fC. This is shown in the TypicaPerformance Characteristics section. Table 2 shows thLTC1062 RMS noise for different noise bandwidths.

Table 2NOISE BW RMS NOISE (VS = 5V)

DC 0.1 fC 2V

DC 0.25 fC 8V

DC 0.5 fC 20V

DC 1 fC 62V

DC 2 fC 100V

200mV/VERT DIV50ms/HORIZ DIV, fC = 10Hz5ms/HORIZ DIV, fC = 100Hz0.5ms/HORIZ DIV, fC = 1kHz

12 RC

fC1.62

=

12 RC

fC1.94

=

12 RC

fC2.11

=

Figure 3. Step Response to a 1V Peak Input Step

APPLICATIO S I FOR ATIO W U U U


8/168

LTC1062

1062fd

AC Coupling an External CMOS Clock Poweredfrom a Single Positive Supply, V+

FB

AGND

V

DIVIDERRATIO

BOUT

OUT

V+

COSC

1

2

3

4

8

7

6

5

LTC10620.01F

V+

0

1062 TA03

CVIN

V+

100k

VOUT

V

Adding an External (R1, C1) to Eliminate the Clock Feedthrough andto Improve the High Frequency Attenuation Floor

FB

AGND

V

DIVIDERRATIO

BOUT

OUT

V+

COSC

1

2

3

4

8

7

6

5

LTC1062

VOUT

V+

fCLK

1062 TA04

CC10.01C

VINR

V

R110R

+

EXTERNALBUFFER

Filtering AC Signals from High DC Voltages

FB

AGND

V

DIVIDERRATIO

BOUT

OUT

V+

COSC

1

2

3

4

8

7

6

5

LTC1062

CLK IN = fC 100

1062 TA05

C0.01F

C0.01F

12R309.6k

VIN

R25.8k

V = 5V

V+ = 5V

DC OUTPUT

EXAMPLE:fCLK = 100KHz, fC = 1kHz. THE FILTER ACCURATELY PASSESTHE HIGH DC INPUT AND ACTS AS 5TH ORDER LP FILTERFOR THE AC SIGNALS RIDING ON THE DC

HIGH DC INPUT = 100V

fIN /fC0.01

1.4

P A S S B A N D G A I N ( d B )

1.0

0.6

0.2

0.1 1

1062 TA06

0.2

1.2

0.8

0

0.4


Passband Amplitude Response for theHigh DC Accurate 5th Order Filter

TYPICAL APPLICATIO S U


9/169

LTC1062

1062fd

Cascading Two LTC1062s to Form a VerySelective Clock Sweepable Bandpass Filter

FB

AGND

V

DIVIDERRATIO

BOUT

OUT

V+

COSC

1

2

3

4

8

7

6

5

LTC1062

1062 TA07

VIN

R110k

fCLK

VOUT

5V5V 5V

FB

AGND

V

DIVIDERRATIO

BOUT

OUT

V+

COSC

1

2

3

4

8

7

6

5

LTC1062

5V

R210k

R110k

R212.5k

FB

AGND

VDIVIDERRATIO

BOUT

OUT

V+COSC

1

2

3

4

8

7

6

5

LTC1062

1062 TA08

VINR1

5VfCLK

VOUT

5V

R2 R3

Clock Tunable Notch FilterFor Simplicity Use R3 = R4 = R5 = 10k;

+

R5R4

R5R2

= 1.234, = 79.31

fCLKfNOTCH

Frequency Response of the Bandpass Filter

(kHz)0.5

( d B )

80

60

40

20

1 1.5 2 2.5

1062 TA09

3 3.5 4 4.5

0

90

70

50

30

10

20

10

VS = 5V

VIN = 100mVRMS

= 1R1R2

= 0.8R1R2

Frequency Response of the Notch Filter

(Hz)100

( d B )

10

0

10

2030

40

50

60

70900

1062 TA10

300 500 700 1100



10/1610

LTC1062

1062fd

Simple Cascading Technique

FB

AGND

V

DIVIDERRATIO

BOUT

OUT

V+

COSC

1

2

3

4

8

7

6

5

LTC10620.1F

DC ACCURATEOUTPUT

7

48

1

6

0.1F

1062 TA11

0.1FVIN 412k

V+ = 5VfCLK = 1kHz10Hz, 10TH ORDER DC ACCURATE LOWPASS FILTER

60dB/OCTAVE ROLLOFF0.5dB PASSBAND ERROR, 0dB DC GAIN

MAXIMUM ATTENUATION 110dB (fCLK = 10kHz)100dB (fCLK = 1kHz)95dB (fCLK = 1MHz)

2

3

5V

5V

5V

FB

AGND

V

DIVIDERRATIO

BOUT

OUT

V+

COSC

1

2

3

4

8

7

6

5

LTC1062

1F

5V

25.8k

+LTC1052

100Hz, 50Hz, 25Hz 5th Order DC Accurate LP Filter

FB

AGND

V

DIVIDERRATIO

BOUT

OUT

V+

COSC

1

2

3

4

8

7

6

5

LTC1062

1062 TA12

0.1F1

2

3

4

0.1F

1/2 CD4016

VIN25.8k

5V 5V

10kHzCLK IN

BOUT

0.2F

VOUT

13 5

TO PIN 13 OF CD4016

TO PIN 5 OF CD4016

BY CONNECTING PIN 4 OF THE LTC1062HIGH/GROUND/LOW THE FILTER CUTOFFFREQUENCY IS 100Hz/50Hz/25Hz

100k

5V

5V5V

5V100k

CONTROL(HIGH, GROUND, LOW)

100k

100k



11/1611

LTC1062

1062fd

7th Order 100Hz Lowpass Filter with Continuous Output Filtering, Output Buffering and Gain Adjustment

FB

AGND

V

DIVIDERRATIO

BOUT

OUT

V+

COSC

1

2

3

4

8

7

6

5

LTC1062

1F

VIN2.6k

5V

5V

5V

1062 TA13

10kHzCLK IN

DC GAIN1

10

R3

3.57k

R40

32.4k

R114.3k46k

R253.6k274k

C10.1F0.01F

C20.033F0.02F

THE LTC1052 IS CONNECTED AS A 2ND ORDER SALLEN AND KEY LOWPASS FILTER WITH A CUTOFFFREQUENCY EQUAL TO THE CUTOFF FREQUENCY OF THE LTC1062. THE ADDITIONAL FILTERINGELIMINATES ANY 10kHz CLOCK FEEDTHROUGH PLUS DECREASES THE WIDEBAND NOISE OF THE FILTERDC OUTPUT OFFSET (REFERRED TO A DC GAIN OF UNITY) = 5V MAXWIDEBAND NOISE (REFERRED TO A DC GAIN OF UNITY) = 60VRMS

R1

+3

0.1F

0.1F

VOUT

2 7

5V

6

84

1C2

5V

C1

R3 R4

R2LTC1052

OUTPUT FILTER COMPONENT VALUES

Single 5V Supply 5th Order LP Filter

FB

AGND

V

DIVIDERRATIO

BOUT

OUT

V+

COSC

1

2

3

4

8

7

6

5

LTC1062

1062 TA14

C CVIN

R

5V10FSOLID

TANTALUM

5V

25k

5V

CLK

FOR A 10Hz FILTER: R = 29.4k, C = 1F, fCLK = 1kHz

THE FILTER IS MAXIMALLY FLAT FOR

DC ACCURATEOUTPUT

BUFFEREDOUTPUT

25k

12R

+

12 RC

= fC1.84



12/1612

LTC1062

1062fd

A Lowpass Filter with a 60Hz Notch

FB

AGND

V

DIVIDERRATIO

BOUT

OUT

V+

COSC

1

2

3

4

8

7

6

5

LTC10621062 TA15

VIN

R9.09k

C1F

V

CLK IN2.84kHz

VOUTV+

R220k

R320k

R410k

+

R619.35k

R510kA1

1/2 LT1013

+

A21/2 LT1013

R720k

C7

0.1F

12 RC

= fCLK100 1.62

Frequency Response of the Above Lowpass Filter with the Notch fNOTCH = fCLK /47.3

fIN (Hz)1

30

V O U T

/ V I N

( H z

)

10

10

10 100 1k

1062 TA16

50

40

20

0

60

70



13/1613

LTC1062

1062fd

J8 Package8-Lead CERDIP (Narrow .300 Inch, Hermetic)

(Reference LTC DWG # 05-08-1110)

J8 0801

.014 .026(0.360 0.660)

.200(5.080)

MAX

.015 .060(0.381 1.524)

.1253.175MIN.100

(2.54)BSC

.300 BSC(7.62 BSC)

.008 .018(0.203 0.457)

0 15

.005(0.127)

MIN

.405(10.287)

MAX

.220 .310(5.588 7.874)

1 2 3 4

8 7 6 5

.025(0.635)

RAD TYP.045 .068

(1.143 1.650)FULL LEAD

OPTION

.023 .045(0.584 1.143)

HALF LEADOPTION

CORNER LEADS OPTION(4 PLCS)

.045 .065(1.143 1.651)NOTE: LEAD DIMENSIONS APPLY TO SOLDER DIP/PLATE

OR TIN PLATE LEADS

OBSOLETE PACKAGE

UPACKAGE DESCRIPTIO


14/1614

LTC1062

1062fd

N8 Package8-Lead PDIP (Narrow .300 Inch)(Reference LTC DWG # 05-08-1510)

N8 1002

.065(1.651)

TYP

.045 .065(1.143 1.651)

.130 .005(3.302 0.127)

.020(0.508)

MIN.018 .003(0.457 0.076)

.120(3.048)

MIN

1 2 3 4

8 7 6 5

.255 .015*(6.477 0.381)

.400*(10.160)

MAX

.008 .015(0.203 0.381)

.300 .325(7.620 8.255)

.325+.035.015+0.8890.3818.255( )

NOTE:1. DIMENSIONS ARE

INCHESMILLIMETERS

*THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS. MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .010 INCH (0.254mm)

.100(2.54)BSC

UPACKAGE DESCRIPTIO


15/1615

LTC1062

1062fd

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 represen-tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.

SW Package16-Lead Plastic Small Outline (Wide .300 Inch)

(Reference LTC DWG # 05-08-1620)

S16 (WIDE) 0502

NOTE 3

.398 .413(10.109 10.490)

NOTE 4

16 15 14 13 12 11 10 9

1

N

2 3 4 5 6 7 8

N/2

.394 .419(10.007 10.643)

.037 .045(0.940 1.143)

.004 .012(0.102 0.305)

.093 .104(2.362 2.642)

.050(1.270)

BSC.014 .019

(0.356 0.482)TYP

0 8 TYP

NOTE 3.009 .013

(0.229 0.330)

.005(0.127)

RAD MIN

.016 .050(0.406 1.270)

.291 .299(7.391 7.595)

NOTE 4

45.010 .029(0.254 0.737)

INCHES(MILLIMETERS)

NOTE:1. DIMENSIONS IN

2. DRAWING NOT TO SCALE3. PIN 1 IDENT, NOTCH ON TOP AND CAVITIES ON THE BOTTOM OF PACKAGES ARE THE MANUFACTURING OPTIONS. THE PART MAY BE SUPPLIED WITH OR WITHOUT ANY OF THE OPTIONS4. THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS. MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .006" (0.15mm)

.420MIN

.325 .005

RECOMMENDED SOLDER PAD LAYOUT

.045 .005

N

1 2 3 N/2

.050 BSC.030 .005TYP

UPACKAGE DESCRIPTIO


16/16

LTC1062

1062fd

LW/TP 1102 1K REV D PRINTED IN USALinearTechnology Corporation

A Low Frequency, 5Hz Filter Using Back-to-Back Solid Tantalum Capacitors

FB

AGND

V

DIVIDERRATIO

BOUT

OUT

V+

COSC

1

2

3

4

8

7

6

5

LTC1062

0.08F

1062 TA17

10F

10F

VIN

5.23k

5V5V

VOUT

BVOUT

+

+

TYPICAL APPLICATIO U

PART NUMBER DESCRIPTION COMMENTS

LTC1063 5th Order Butterworth Lowpass, DC Accurate Clock Tunable, No External Components

LTC1065 5th Order Bessel Lowpass, DC Accurate Clock Tunable, No External Components

LTC1066-1 8th Order Elliptic or Linear Phase, DC Accurate Clock Tunable, fc 120kHz

LTC1563-2/ LTC1563-3 Active RC, 4th Order Lowpass Very Low Noise, 256Hz fc 256kHz

LTC1564 10kHz to 150kHz Digitally Controlled Lowpass and PGA Continuous Time, Very High Dynamic Range, PGA In

LTC1569-6 Linear Phase, DC Accurate, 10th Order No External Clock Required, fc 64kHz, S08

LTC1569-7 Linear Phase, DC Accurate, 10th Order No External Clock Required, fc 300kHz, S08

RELATED PARTS

ltc 1065_filtro 5 ordem

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