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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
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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
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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
fCLK = 10kHz, fC = 100Hz
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
fCLK = 10kHz, fC = 100Hz
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
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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
VS = 5VfCLK = 100kHz
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
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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
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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
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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
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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
VS = 5VfCLK = 100kHz
Passband Amplitude Response for theHigh DC Accurate 5th Order Filter
TYPICAL APPLICATIO S U
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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
TYPICAL APPLICATIO S U
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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
TYPICAL APPLICATIO S U
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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
TYPICAL APPLICATIO S U
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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
TYPICAL APPLICATIO S U
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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
8/10/2019 Ltc 1065_filtro 5 Ordem
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
8/10/2019 Ltc 1065_filtro 5 Ordem
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
8/10/2019 Ltc 1065_filtro 5 Ordem
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
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