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LTC1064-3 Low Noise, High Frequency, 8th Order Linear Phase Lowpass Filter
FEATURES

DESCRIPTIO

8th Order Filter in a 14-Pin Package 95kHz Maximum Corner Frequency No External Components 75:1, 150:1 and 120:1 Clock to Cutoff Frequency Ratio 60VRMS Total Wideband Noise 0.03% THD or Better Operates from 2.37V to 8V Power Supplies Low Total Output DC Offset
The LTC(R)1064-3 is a monolithic 8th order lowpass Bessel filter, which provides a linear phase response over its entire passband. An external TTL or CMOS clock programs the filter's cutoff frequency. The clock to cutoff frequency ratio is 75:1 (Pin 10 at V+) or 150:1 (Pin 10 at V-) or 120:1 (Pin 10 at GND). The maximum cutoff frequency is 95kHz. No external components are needed. The LTC1064-3 features low wideband noise and low harmonic distortion even for input voltages up to 3VRMS. In fact the LTC1064-3 overall performance competes with equivalent multiple op amp RC active realizations. The LTC1064-3 is available in a 14-pin DIP or 16-pin surface mounted SOL package. The LTC1064-3 is fabricated using LTC's enhanced analog CMOS Si-gate process. The LTC1064-3 is pin compatible with the LTC1064-1, LTC1064-2 and LTC1064-4.
, LTC and LT are registered trademarks of Linear Technology Corporation.
APPLICATIO S

Antialiasing Filters Smoothing Filters Tracking High Frequency Lowpass Filters
TYPICAL APPLICATIO
8th Order Clock Sweepable Lowpass Bessel Filter
1 VIN 2 3 4 5 6 7 NC VIN OUT C NC 14 13 -8V CLOCK = 7MHz 0.1F
Measured Frequency Response
0 -15 -30
VOUT/VIN (dB)
LTC1064-3 12 V- AGND V+ AGND NC INV A fCLK 75/150 VOUT NC 11
-45 -60 -75
8V 0.1F
10 + V 9 8 VOUT
1064 TA01a
-90 VS = 7.5V, fCLK = 7MHz, PIN 10 TO V +, f -3dB = 95kHz, GROUP DELAY = 6s -105 100 10 FREQUENCY (kHz)
NOTE: THE POWER SUPPLIES SHOULD BE BYPASSED BY A 0.1F OR LARGER CAPACITOR CLOSE TO THE PACKAGE. THE CONNECTI0N BETWEEN PIN 7 AND PIN 14 SHOULD BE MADE UNDER THE IC PACKAGE.
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1000
1064-3 TA01b
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LTC1064-3
ABSOLUTE AXI U RATI GS
Total Supply Voltage (V + to V -) ............................ 16.5V Power Dissipation .............................................. 400mW Storage Temperature Range ................. - 65C to 150C Lead Temperature (Soldering, 10 sec).................. 300C
PACKAGE/ORDER I FOR ATIO
TOP VIEW NC VIN AGND V+ AGND NC RIN A 1 2 3 4 5 6 7 14 OUT C 13 NC 12 V-
ORDER PART NUMBER
NC 1 2 3 4 5 6 7 8
LTC1064-3CN
11 fCLK 10 75/150 9 8 VOUT NC
N PACKAGE 14-LEAD PDIP TJMAX = 110C, JA = 70C/W J PACKAGE 14-LEAD CERDIP
OBSOLETE PACKAGE
Consider the N 14 Package for Alternate Source
LTC1064-3MJ LTC1064-3CJ
Consult LTC Marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS
PARAMETER Passband Gain Gain TempCo -3dB Frequency Gain at -3dB Frequency Stopband Attenuation Stopband Attenuation Stopband Attenuation Input Frequency Range Output Voltage Swing and Operating Input Voltage Range Total Harmonic Distortion Wideband Noise CONDITIONS
The denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25C. VS = 7.5V, 75:1, fCLK = 2MHz, R1 = 10k, TTL or CMOS clock input level unless otherwise specified.
MIN
Referenced to 0dB, 1Hz to 1kHz 50:1 (fCLK /f -3dB = 75) 100:1 (fCLK /f -3dB = 150) Referenced to 0dB, fIN = 26.67/13.34kHz At 3f -3dB At 5f -3dB At 7f -3dB 100:1 50:1 VS = 2.37V VS = 5V VS = 7.5V VS = 5V, Input = 1VRMS at 1kHz VS = 7.5V, Input = 3VRMS at 1kHz VS = 5V, Input = GND 1Hz - 1.99MHz VS = 7.5V, Input = GND 1Hz - 1.99MHz
2
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(Note 1)
Operating Temperature Range LTC1064-3M (OBSOLETE) ............... - 55C to 125C LTC1064-3C ....................................... - 40C to 85C Input Voltage ........................... (V+ +0.3V) to V - -0.3V) Burn-In Voltage ....................................................... 15V
TOP VIEW 16 OUT C 15 NC 14 V - 13 NC 12 fCLK 11 75/150 10 NC 9 VOUT
ORDER PART NUMBER LTC1064-3CSW
VIN AGND V+ AGND NC NC RIN A
SW PACKAGE 16-LEAD PLASTIC (WIDE) SO TJMAX = 150C, JA = 90C/W
TYP 0.0002 26.67 13.34
MAX 0.15
UNITS dB dB/C kHz kHz dB dB dB dB kHz kHz V V V
-0.5

-3.8 -25 -56 0 0
-2.75 -29 -60 -84
1.1 3.1 5 0.015 0.03 55 60
% % VRMS VRMS
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LTC1064-3
ELECTRICAL CHARACTERISTICS
PARAMETER Output DC Offset Output DC Offset TempCo Input Impedance Output Impedance Output Short-Circuit Current Clock Feedthrough Maximum Clock Frequency Power Supply Current f OUT = 10kHz Source/Sink CONDITIONS VS = 7.5V VS = 5V VS = 7.5V
The denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25C. VS = 7.5V, 75:1, fCLK = 2MHz, R1 = 10k, TTL or CMOS clock input level unless otherwise specified.
MIN TYP 30 20 50 14 22 2 3/1 200 VS 7V, 50% Duty Cycle VS 7V, 50% Duty Cycle, TA = <55C VS = 2.37V, f CLK = 1MHz VS = 5V, f CLK = 1MHz VS = 7.5V, f CLK = 1MHz

MAX 150
UNITS mV V/C V/C k mA VRMS
5 7 10 12 16
MHz MHz mA mA mA mA mA V
22 23 26 28 32 8
Power Supply Voltage Range Note 1: Absolute Maximum Ratings are those values beyond which the life of a device may be impaired.
2.37
TYPICAL PERFOR A CE CHARACTERISTICS
Gain vs Frequency
15 0 -15 fCLK = 2MHz f -3dB = 26.67kHz fCLK = 5MHz f -3dB = 66.67kHz fCLK = 7MHz f -3dB = 95kHz
GAIN (dB)
-30 -45 -60 -75 -90
PHASE (DEG)
135 180 225 270 315 360
GROUP DELAY (s)
VS = 7.5V TA = 25C 100k FREQUENCY (Hz) 1M
1064 G01
-105 10k
UW
Phase vs Frequency
-45 0 45 90 VS = 7.5V TA = 25C f CLK = 750kHz f-3dB = 10kHz
110 100 90 80 70 60 50 40 30 20 10 0
Group Delay
VS = 7.5V TA = 25C
fCLK = 750kHz, f-3dB = 10kHz
fCLK = 2MHz, f-3dB = 26.67kHz fCLK = 5MHz, f-3dB = 66.67kHz 0 2 4 6 8 10 12 14 16 18 20 22 FREQUENCY (kHz)
1064 G03
405 450 0 2 4 6 8 10 12 14 16 18 20 22 FREQUENCY (kHz)
1064 G02
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LTC1064-3 TYPICAL PERFOR A CE CHARACTERISTICS
Phase Matching
2.2 VS = 7.5V 2.0 fCLK = 1.5MHz 1.8 f -3dB = 20kHz 50 UNIT SAMPLE (TA = 25C TO 125C) 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0 0 2 4 6 8 10 12 14 16 18 20 22 FREQUENCY (kHz)
1064 G04
POWER SUPPLY CURRENT (mA)
PHASE MATCH (DEG)
DISTORTION (%)
4
UW
V+ V- GND
Total Harmonic Distortion
1.0 fCLK = 1.5MHz, 75:1 f -3dB = 20kHz
Power Supply Current vs Power Supply Voltage
48 44 40 36 32 28 24 20 16 12 8 4
10
1064 G05
fCLK = 1MHz
VS = 5V 0.1 VS = 2.37V
TA = -55C TA = 25C TA = 125C
VS = 7.5V 0.01 0.1 1 INPUT LEVELS (VRMS)
0
0 2 4 6 8 10 12 14 16 18 20 22 24 TOTAL POWER SUPPLY VOLTAGE (V)
1064 G06
Transient Response Input 10VP-P Square Wave VS = 7.5V, Pin 10 to V +, f CLK = 1.5MHz
Table 1. Wideband Noise (VRMS)
VS = 2.37V Pin 10 to fCLK /f -3dB 75/1 150/1 120/1 Noise VRMS 50 52 45 VS = 5V Noise VRMS 55 58 50 VS = 7.5V Noise VRMS 60 62 54
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LTC1064-3 TYPICAL PERFOR A CE CHARACTERISTICS
Table 2. Gain/Phase, f -3dB = 1kHz, LTC1064-3 Typical Response VS = 5V, TA = 25C, fCLK = 75kHz, Pin 10 at V + (fltr 75:1)
FREQUENCY (kHz) 0.500 1.000 1.500 2.000 2.500 3.000 3.500 4.000 4.500 5.000 5.500 6.000 6.500 7.000 7.500 8.000 8.500 9.000 9.500 GAIN (dB) - 0.858 - 2.990 - 6.840 - 12.780 - 20.800 - 29.900 - 38.800 - 47.100 - 54.700 - 61.600 - 68.000 - 73.840 - 79.250 - 84.230 - 88.940 - 93.360 - 97.510 -100.880 -105.780 PHASE (deg) -90.430 179.200 89.600 3.800 -71.000 -129.600 -173.700 152.600 126.000 103.300 85.190 69.060 54.780 42.440 30.060 21.300 10.000 1.520 -7.820
Table 4. Gain/Phase, f -3dB = 1kHz, LTC1064-3 Typical Response VS = 5V, TA = 25C, fCLK = 150kHz, Pin 10 at V - (fltr 150:1)
FREQUENCY (kHz) 0.500 1.000 1.500 2.000 2.500 3.000 3.500 4.000 4.500 5.000 5.500 6.000 6.500 7.000 7.500 8.000 8.500 9.000 9.500 GAIN (dB) - 0.955 - 3.380 - 7.570 - 13.770 - 21.800 - 30.700 - 39.400 - 47.600 - 55.100 - 61.900 - 68.260 - 74.050 - 79.450 - 84.330 - 89.010 - 93.250 - 97.340 - 101.390 - 104.980 PHASE (deg) - 88.100 -175.300 99.700 20.100 - 48.000 -100.700 -139.900 -169.200 168.300 150.300 135.830 123.660 113.440 104.440 97.670 91.580 84.670 74.600 75.990
UW
Table 3. Gain/Delay, f -3dB = 1kHz, LTC1064-3 Typical Response VS = 5V, TA = 25C, fCLK = 75kHz, Pin 10 at V + (fltr 75:1)
FREQUENCY (kHz) 0.200 0.300 0.400 0.500 0.600 0.700 0.800 0.900 1.000 1.100 1.200 1.300 1.400 1.500 1.600 1.700 1.800 1.900 2.000 GAIN (dB) - 0.281 - 0.420 - 0.610 - 0.860 - 1.160 - 1.530 - 1.950 - 2.430 - 2.990 - 3.610 - 4.300 - 5.060 - 5.920 - 6.830 - 7.840 - 8.930 - 10.130 - 11.410 - 12.780 DELAY (ms) 0.502 0.503 0.503 0.502 0.502 0.502 0.503 0.503 0.500 0.500 0.500 0.498 0.495 0.491 0.489 0.481 0.473 0.465 0.454
Table 5. Gain/Delay, f-3dB = 1kHz, LTC1064-3 Typical Response VS = 5V, TA = 25C, fCLK = 150kHz, Pin 10 at V- (fltr 150:1)
FREQUENCY 0.200 0.300 0.400 0.500 0.600 0.700 0.800 0.900 1.000 1.100 1.200 1.300 1.400 1.500 1.600 1.700 1.800 1.900 2.000 GAIN (dB) - 0.284 - 0.450 - 0.670 - 0.960 - 1.310 - 1.730 -2.210 -2.750 -3.380 - 4.070 - 4.820 - 5.660 - 6.580 - 7.570 - 8.640 - 9.790 - 11.050 - 12.360 - 13.770 DELAY (ms) 0.490 0.489 0.489 0.487 0.487 0.485 0.484 0.482 0.478 0.478 0.475 0.470 0.467 0.463 0.456 0.448 0.438 0.428 0.417
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LTC1064-3 TYPICAL PERFOR A CE CHARACTERISTICS
Table 6. Gain/Phase, f -3dB = 1kHz, LTC1064-3 Typical Response VS = 5V, TA = 25C, fCLK = 120kHz, Pin 10 at GND (fltr 120:1)
FREQUENCY (kHz) 0.500 1.000 1.500 2.000 2.500 3.000 3.500 4.000 4.500 5.000 5.500 6.000 6.500 7.000 7.500 8.000 8.500 9.000 9.500 GAIN (dB) -0.994d -3.050 -6.520 -12.180 -19.460 -27.200 -34.700 -41.900 -48.700 -55.100 -60.900 -66.500 -71.660 -76.390 -80.910 -84.900 -88.750 -92.410 -98.290 PHASE (deg) -82.210 -162.800 116.700 40.200 -23.600 -74.000 -114.200 -146.800 -173.300 164.700 145.800 130.610 117.130 105.880 96.140 87.510 81.380 78.190 52.860
TA = 25C FREQUENCY (kHz) 10.000 20.000 30.000 40.000 50.000 60.000 70.000 80.000 90.000 100.000 110.000 120.000 130.000 140.000 150.000 GAIN (dB) -0.912 -3.090 -6.910 -12.710 -20.500 -29.400 -38.300 -46.500 -54.000 -61.000 -67.310 -73.170 -78.600 -83.760 -88.630 PHASE (deg) -92.270 176.000 85.500 -1.200 -77.800 -138.700 174.600 138.300 109.100 84.800 64.040 46.260 31.120 18.050 7.770 FREQUENCY (kHz) 10.000 20.000 30.000 40.000 50.000 60.000 70.000 80.000 90.000 100.000 110.000 120.000 130.000 140.000 150.000
6
UW
Table 7. Gain/Delay, f-3dB = 1kHz, LTC1064-3 Typical Response VS = 5V, TA = 25C, fCLK = 120kHz, Pin 10 at GND (fltr 120:1)
FREQUENCY (kHz) 0.200 0.300 0.400 0.500 0.600 0.700 0.800 0.900 1.000 1.100 1.200 1.300 1.400 1.500 1.600 1.700 1.800 1.900 2.000 GAIN (dB) -0.354 -0.520 -0.730 -1.000 -1.320 -1.670 -2.090 -2.540 -3.050 -3.600 -4.220 -4.900 -5.670 -6.520 -7.470 -8.500 -9.650 -10.870 -12.180 DELAY (ms) 0.458 0.456 0.454 0.452 0.449 0.448 0.446 0.446 0.445 0.446 0.449 0.448 0.447 0.446 0.441 0.432 0.422 0.409 0.395
Table 8. Gain/Phase, f-3dB = 20kHz, LTC1064-3 Typical Response VS = 7.5V, fCLK = 1.5MHz, Pin 10 at V+(fltr 75:1)
TA = 125C GAIN (dB) -0.944 -3.170 -6.910 -12.450 -19.920 -28.500 -37.200 -45.300 -52.700 -59.600 -65.900 -71.750 -77.170 -82.370 -87.400 PHASE (deg) -92.880 175.500 85.700 -0.600 -78.000 -140.700 170.500 132.200 100.900 74.900 52.600 32.850 15.840 1.130 -11.380
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LTC1064-3
PI FU CTIO S
NC (Pins 1, 6, 8 and 13): The "no connection" pins should be preferably grounded. These pins are not internally connected. VIN, VOUT (Pins 2, 9): The input Pin 2 is connected to an 18k resistor tied to the inverting input of an op amp. Pin 2 is protected against static discharge. The device's output, Pin 9, is the output of an op amp which can typically source/sink 3mA/1mA. Although the internal op amps are unity gain stable, driving long coax cables is not recommended. When testing the device for noise and distortion, the output, Pin 9, should be buffered (Figure 1). The op amp power supply wire (or trace) should be connected directly to the power source. To eliminate switching transients from filter output, buffer filter output with a third order lowpass (see Figure 5). AGND (Pins 3, 5): For dual supply operation these pins should be connected to a ground plane. For single supply operation both pins should be tied to one half supply (Figure 3). V +, V - (Pins 4, 12): Should be bypassed with a 0.1F capacitor to an adequate analog ground. Low noise, nonswitching power supplies are recommended. To avoid latchup when the power supplies exhibit high turn-on transients, a 1N5817 Schottky diode should be added from the V + and V - pins to ground (Figure 1, 2 and 3).
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(Pin Numbers Refer to the 14-Pin Package)
RIN A, OUT C (Pins 7, 14): A very short connection between Pin 7 and Pin 14 is recommended. This connection should be preferably done under the IC package. In a breadboard, use a one inch, or less, shielded coaxial cable: the shield should be grounded. In a PC board, use a one inch trace or less; surround the trace by a ground plane. 50/100 (Pin 10): Ratio Pin.The DC level at this pin determines the ratio of clock frequency to the -3dB frequency of the filter. The ratio is 75:1 when Pin 10 is at V +, 120:1 when Pin 10 is at GND and 150:1 when Pin 10 is at V -. This pin should be bypassed with a 0.1F capacitor to analog ground when it's connected to V - or V + (Figure 1). See Tables 2 through 8 for typical gain and delay responses for the three ratios. fCLK (Pin 11): For 5V supplies the logic threshold level is 1.4V. For 8V and 0V to 5V supplies the logic threshold levels are 2.2V and 3V respectively. The logic threshold levels vary 100mV over the full military temperature range. The recommended duty cycle of the input clock is 50% although for clock frequencies below 500kHz the clock "on" time can be as low as 200ns. The maximum clock frequency for 5V supplies is 4MHz. For 7V supplies and above, the maximum clock frequency is 7MHz. Do not allow the clock levels to exceed the power supplies. For single supply operation 6V use level shifting at Pin 11 with T2L levels (see Figure 4).
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LTC1064-3
TYPICAL APPLICATIO S
1 VIN 2 NC OUT C 14 POWER SOURCE V+ V-
13 NC VIN LTC1064-3 3 12 V- AGND 4 0.1F 5 6 V+ AGND NC fCLK 75/150 VOUT NC 11 10 9 8 V +/V - 10k 0.1F 0.1F 10k 0.1F
7 INV A
RECOMMENDED OP AMPS: LT1022, LT318, LT1056
Figure 1. Buffering the Filter Output. The Buffer Op Amp Should Not Share the LTC1064-3 Power Lines
1 VIN 2 3 V+= 15V 0.1F 5k V+/2 0.1F 5k 4 5 6 7
NC VIN
LTC1064-3 12 AGND V- V+ AGND NC INV A fCLK 75/150 VOUT NC 11 10 9 8 VOUT
0.1F 5k
Figure 3. Single Supply Operation. If Fast Power Up or Down Transients are Expected, Use a 1N5817 Schottky Diode Between Pin 4 and Pin 5
VIN
V+ 0.1F
Figure 5. Adding an Output Buffer-Filter to Eliminate Any Clock Feedthrough. Passband 0.1dB to 50kHz, -3dB at 94kHz
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1 VIN 2 3 V+ 1N5817 0.1F 4 5 6
VOUT
NC VIN
OUT C NC
14 13 V- 1N5817 0.1F
LTC1064-3 12 V- AGND V+ AGND NC INV A fCLK 75/150 VOUT NC 11 10 9 8 VOUT
- +
1064-3 F01
7
1064-3 F02
0.1F
Figure 2. Using Schottky Diodes to Protect the IC from Power Supply Reversal
OUT C NC
14 13
VIN
1 2 3
NC VIN
OUT C NC
14 13 V+ 2.2k T2L LEVEL RATIO VOUT 5k 1F
LTC1064-3 12 AGND V- V+ AGND NC INV A fCLK 75/150 VOUT NC 11 10 9 8
fCLK
0V TO 10V
V+ 5k
4 5 6 7
1064-3 F03
1064-3 F04
Figure 4. Level Shifting the Input T2L Clock for Single Supply Operation 6V
1 2
NC VIN
OUT C
14
13 NC LTC1064-3 3 12 AGND V- 4 5 6 7 V+ AGND NC INV A fCLK 75/150 VOUT NC 11 10 9 8
V- 0.1F 200pF V+/GND/V - 4.99k 4.99k 10k VOUT
-
LT1056
50 0.027F
1064-3 F05
430pF
+
LTC1064-3
PACKAGE DESCRIPTIO
.300 BSC (7.62 BSC)
.008 - .018 (0.203 - 0.457)
NOTE: LEAD DIMENSIONS APPLY TO SOLDER DIP/PLATE OR TIN PLATE LEADS
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J Package 14-Lead CERDIP (Narrow 0.300, Hermetic)
(LTC DWG # 05-08-1110)
.785 (19.939) MAX 14 13 12 11 10 9 8 .005 (0.127) MIN .025 (0.635) RAD TYP .220 - .310 (5.588 - 7.874) 1 2 3 4 5 6 7 .200 (5.080) MAX .015 - .060 (0.381 - 1.524) 0 - 15 .045 - .065 (1.143 - 1.651) .014 - .026 (0.360 - 0.660) .100 (2.54) BSC .125 (3.175) MIN
J14 0801
OBSOLETE PACKAGE
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LTC1064-3
PACKAGE DESCRIPTIO U
N Package 14-Lead PDIP (Narrow 0.300)
(LTC DWG # 05-08-1510)
.770* (19.558) MAX 14 13 12 11 10 9 8 .255 .015* (6.477 0.381) 1 .300 - .325 (7.620 - 8.255) .130 .005 (3.302 0.127) .020 (0.508) MIN .008 - .015 (0.203 - 0.381) +.035 .325 -.015 .005 (0.125) .100 MIN (2.54) BSC 2 3 4 5 6 7 .045 - .065 (1.143 - 1.651) .065 (1.651) TYP .120 (3.048) MIN .018 .003 (0.457 0.076)
N14 1002
(
+0.889 8.255 -0.381
)
INCHES MILLIMETERS *THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS. MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .010 INCH (0.254mm)
NOTE: 1. DIMENSIONS ARE
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LTC1064-3
PACKAGE DESCRIPTIO
.030 .005 TYP N
.420 MIN
1
2
3
RECOMMENDED SOLDER PAD LAYOUT 1 .291 - .299 (7.391 - 7.595) NOTE 4 .010 - .029 x 45 (0.254 - 0.737)
0 - 8 TYP
.005 (0.127) RAD MIN
.009 - .013 (0.229 - 0.330)
NOTE 3 .016 - .050 (0.406 - 1.270)
NOTE: 1. DIMENSIONS IN
INCHES (MILLIMETERS) 2. DRAWING NOT TO SCALE 3. 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 OPTIONS 4. THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS. MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .006" (0.15mm)
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.
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SW Package 16-Lead Plastic Small Outline (Wide .300 Inch)
(Reference LTC DWG # 05-08-1620)
.050 BSC .045 .005 .398 - .413 (10.109 - 10.490) NOTE 4 16 15 14 13 12 11 10 9 N .325 .005 NOTE 3 .394 - .419 (10.007 - 10.643) N/2 N/2 2 3 4 5 6 7 8 .093 - .104 (2.362 - 2.642) .037 - .045 (0.940 - 1.143) .050 (1.270) BSC .004 - .012 (0.102 - 0.305) .014 - .019 (0.356 - 0.482) TYP
S16 (WIDE) 0502
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LTC1064-3
TYPICAL APPLICATIO S
1 VIN1 2 NC VIN OUT C 14 VOUT1: f-3dB = fCLK 55
13 NC LTC1064-3 3 12 AGND V- 4 V+ AGND NC INV A fCLK 75/150 VOUT NC
1064-3 F06
7.5V 0.1F 5 6 VIN2 7
11 10 9 8
RELATED PARTS
PART NUMBER LTC1069-7 LTC1563 LTC1569-6 LTC1569-7 DESCRIPTION 8th Order Linear Phase Lowpass Active RC, 4th Order Bessel Lowpass DC Accurate, 10th Order Lowpass DC Accurate, 10th Order Lowpass COMMENTS S0-8 Package Continuous Time, Resistor Programmable Cutoff Linear Phase, Internal Precision Clock, S0-8 Package Linear Phase, Internal Precision Clock, S0-8 Package
12
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900 FAX: (408) 434-0507
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Amplitude Response
-7.5V fCLK = 1MHz 0.1F
fCLK VOUT2: f-3dB = 110
Figure 6. Dual 4th Order Bessel Filters. VS = 7.5V, f CLK = 1MHz, Pin 10 to GND. f -3dB = 9kHz and 18kHz
10643fa LW/TP 1202 1K REV A * PRINTED IN USA
www.linear.com
LINEAR TECHNOLOGY CORPORATION 1989

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