ltc1068-200 Linear Technology Corporation, ltc1068-200 Datasheet
ltc1068-200
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ltc1068-200 Summary of contents
Page 1
... Lowpass or Highpass Filters: LTC1068-200, 0.5Hz to 25kHz; LTC1068, 1Hz to 50kHz; LTC1068-50, 2Hz to 50kHz; LTC1068-25, 4Hz to 200kHz ■ Bandpass or Bandreject (Notch) Filters: LTC1068-200, 0.5Hz to 15kHz; LTC1068, 1Hz to 30kHz; LTC1068-50, 2Hz to 30kHz; LTC1068-25, 4Hz to 140kHz U TYPICAL APPLICATIO Dual, Matched, 4th Order Butterworth Lowpass Filters, Clock-Tunable Up to 200kHz f – ...
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... PLASTIC SSOP = 110°C, θ 95°C/W JMAX JA ORDER PART NUMBER LTC1068CG LTC1068IG LTC1068-200CG LTC1068-200IG LTC1068-50CG LTC1068-50IG LTC1068-25CG LTC1068-25IG Order Options Tape and Reel: Add #TR Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF Lead Free Part Marking: http://www.linear.com/leadfree/ Consult LTC Marketing for parts specified with wider operating temperature ranges ...
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... Temperature Coefficient O Q Temperature Coefficient DC Offset Voltage (Note 5) (See Table 1) Clock Feedthrough Max Clock Frequency (Note 6) Power Supply Current = ±5V, T LTC1068-200 (Internal Op Amps PARAMETER Operating Supply Voltage Range Voltage Swings Output Short-Circuit Current (Source/Sink) DC Open-Loop Gain GBW Product Slew Rate Analog Ground Voltage (Note 4) = ± ...
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... Analog Ground Voltage (Note 4) = ±5V, T LTC1068-50 (Complete Filter PARAMETER Clock-to-Center Frequency Ratio (Note 5) Clock-to-Center Frequency Ratio, Side-to-Side Matching (Note 5) Q Accuracy (Note 5) 4 LTC1068-200 (Complete Filter). The S CONDITIONS V = 4.75V 1MHz (Note 3) S CLK = ±5V 1MHz ...
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... LTC1068-25 (Complete Filter PARAMETER Clock-to-Center Frequency Ratio (Note 5) Clock-to-Center Frequency Ratio, Side-to-Side Matching (Note 5) Q Accuracy (Note 5) f Temperature Coefficient O Q Temperature Coefficient LTC1068-200 (Complete Filter). The S CONDITIONS = ±5V 500kHz CLK OS1 (DC Offset of Input Inverter) = ±5V, f ...
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... V OS2 – V )(1 + R5/R6) OS2 – V OS2 (R4/R2) – V OS2 LTC1068-200 Maximum Q vs Center Frequency (Modes 1, 1b 3.3V CLK(MAX 5V CLK(MAX) = ± 5V CLK(MAX) (FOR MODE 2, R4 ≥ 10R2 ...
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... 128 160 192 CENTER FREQUENCY, f (kHz) O 1068 G07 LTC1068-200 Center Frequency Variation vs Clock Frequency 0.20 0.15 0.10 0.05 MODE 3 0 – 0.05 MODE 1 – 0.10 = ± – 0. REFERENCE CENTER FREQUENCY – 0.20 WITH f = 0.75MHz CLK – 0.25 0.75 1.25 1.75 2.25 2.75 3.25 3.75 CLOCK FREQUENCY (MHz) ...
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... Q 1068 G13 Noise Increase vs R2/R4 Ratio (Mode 3) 2.0 1.9 1.8 1.7 1.6 1.5 1.4 1.3 1.2 1.1 0 0.2 0.3 0.4 0.5 R2/R4 RATIO LTC1068/LTC1068-200/ LTC1068-25 Power Supply Current vs Power Supply 10.5 9.5 8.5 7.5 6.5 5.5 4 TOTAL POWER SUPPLY (V) 8 LTC1068-50 Noise vs Q 300 250 ± 5V 200 5V 150 3.3V 100 ...
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... AGND should be bypassed to the analog ground plane with at least a 0.47µF capacitor (Figure 2). Two internal resistors bias the analog ground pin. For the LTC1068, LTC1068-200 and LTC1068-25, the voltage at the analog ground pin (AGND) for single supply is 0.5 × V and for the LTC1068- 0.435 × V ...
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... SC (24) + Σ – PIN 28-LEAD SSOP PACKAGE SD (19) – ® LT 1354 1k + 1068 F03 Figure 3. Wideband Buffer DEVICE LTC1068 LTC1068-200 10k 10k LTC1068-25 LTC1068-50 11.3k 8.6k VARIES ± 2% *THE RATIO ( CLK (21 – (23) AGND (7) NC (6) ...
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... – – + Σ + AGND f CLK DEVICE RATIO LTC1068 LTC1068-200 – – ON OBP LTC1068-50 LTC1068- OLP ON ( ratios greater than the part’s nomi- CENTER . C LP RATIO 100 200 50 25 1068 F04 CLK ...
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... OHP OBP – (RATIO)(0.32)(R4) DEVICE RATIO LTC1068 100 LTC1068-200 200 LTC1068-50 50 LTC1068- HPN S – – + Σ + DEVICE LTC1068 LTC1068-200 LTC1068-50 √ CLK ; LTC1068-25 n RATIO 1– (RATIO)(0.32)(R4 (AC GAIN, f >> – ...
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... Demo Board 104 is available in four assembled versions: Assembly 104-A features the low noise LTC1068CG (clock- to-center frequency ratio = 100), assembly 104-B features the low noise LTC1068-200CG (clock-to-center frequency ratio = 200), assembly 104-C features the high frequency LTC1068-25CG (clock-to-center frequency ratio = 25) and assembly 104-D features the low power LTC1068-50CG (clock-to-center frequency ratio = 50) ...
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... LTC1068 Series U U APPLICATIONS INFORMATION supply inputs to the board. Jumpers JPA to JPD on the board configure the filter’s second order circuit modes, jumper JP1 configures the filter for dual or single supply operation and jumpers JP2 (A-D) to JP3 (A-D) configure the op amp buffers as inverting or noninverting. Surface ...
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... U U APPLICATIONS INFORMATION W U LTC1068 Series 1068fb 15 ...
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... INFORMATION A Surface Mount Printed Circuit Layout A very compact surface mount printed circuit layout can be designed with 0603 size surface mount resistors, capacitors and a 28-pin SSOP of the LTC1068 product family. An example of a printed circuit layout is shown in 70kHz Elliptic Bandpass Filter, f R21 4.99k R11 29 ...
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... R43 R33 R23 R22 R32 R52 GND R62 R64 R44 + V R54 R34 R24 1068 TA07 LTC1068 Series R22 R52 R32 R62 C2 R64 R44 R54 R34 R24 1068 TA06 Solder Side OUT – V 1068 TA08 1068fb 17 ...
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... LTC1068 Series U TYPICAL APPLICATIONS LTC1068-200 8th Order Linear Phase Lowpass, f for Ultralow Frequency Applications R L1 23.2k 1 INV B INV C R21 12.4k 2 R11 HPB/NB HPC/NC 14.3k R31 10k 3 V BPB BPC IN R41 15.4k 4 LPB LPC 5 SB LTC1068-200 AGND CLK 0.1µ R43 12.4k 11 LPA LPD R33 12 ...
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... U TYPICAL APPLICATIONS LTC1068-50 8th Order Linear Phase Lowpass, f for Single Supply Low Power Applications. Maximum f 20kHz with a 3.3V Supply and 40kHz with a 5V Supply R A1 56. 13.3k 1 INV B R21 20.5k 2 R11 HPB/NB HPC/NC 22.6k R31 10k 3 V BPB IN R41 22.6k 4 LPB 5 SB LTC1068- AGND 8 + 3.3V V 0.1µF ...
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... LTC1068 Series U TYPICAL APPLICATIONS LTC1068-25 8th Order Lowpass, f Attenuation – 50dB at (1.25)(f (1.5)(f ). Maximum f CUTOFF 26.7k 1 INV B R21 10k 2 HPB/NB R11 32.4k R31 10k 3 BPB LPB R61 R51 5 2.21k SB 4.99k LTC1068- AGND 0.1µ R63 8.45k 10 SA R53 11 4.99k LPA ...
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... U TYPICAL APPLICATIONS LTC1068 8th Order Linear Phase Bandpass, f Passband – 3dB at (0.88)(f CENTER = 40kHz with ±5V Supplies f CENTER R L1 63. 7.5k 1 INV B R21 4.99k 2 HPB/NB R11 R31 26.1k 19. BPB IN R41 12.1k 4 LPB LTC1068 AGND 0.1µ R43 10.7k 9 LPA R33 14.7k 10 BPA R23 4.99k ...
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... LTC1068 Series U TYPICAL APPLICATIONS LTC1068 8th Order Linear Phase Bandpass, f Passband – 3dB at (0.88)(f CENTER = 50kHz with ±5V Supplies f CENTER R L1 24.9k 1 INV B R21 10k 2 HPB/NB R31 R11 24.3k 25.5k 3 BPB V IN R41 107k 4 LPB AGND LTC1068 0.1µF R63 2.32k 8 SA R53 R43 4 ...
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... U TYPICAL APPLICATIONS LTC1068 8th Order Linear Phase Bandpass, f Passband – 3dB at (0.7)(f ) and (1.3)(f CENTER Burst Response, Maximum f CENTER R L1 348k 1 INV B R21 14.7k 2 HPB/NB R31 R11 10k 11k 3 BPB V IN R41 14.3k 4 LPB AGND LTC1068 0.1µ R43 21.5k 9 LPA R33 11.3k 10 BPA R23 ...
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... LTC1068 Series U TYPICAL APPLICATIONS LTC1068-50 8th Order Linear Phase Bandpass, f Passband – 3dB at (0.8)(f ) and (1.2)(f CENTER Low Power Applications. Maximum f Supply INV B R21 10k 2 HPB/NB R11 36.5k R31 30. BPB IN R41 10.7k 4 LPB R51 R61 5 4.99k SB 1.74k LTC1068- AGND 1µF 0.1µ ...
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... U TYPICAL APPLICATIONS LTC1068-25 8th Order Bandpass, f Passband – 3dB at (0.965)(f = 80kHz with ±5V Supplies Maximum f CENTER INV B R21 4.99k 2 HPB/NB R11 121k R31 97.6k 3 BPB LPB R61 R51 5 8.87k SB 4.99k LTC1068- AGND 0.1µ R63 6.49k 10 SA R53 11 4 ...
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... LTC1068 Series U TYPICAL APPLICATIONS LTC1068-200 8th Order Highpass, f Attenuation – 60dB at (0.6)(f = 20kHz with ±5V Supplies Maximum f CUTOFF 66.5k 1 INV B R21 10k 2 HPB/NB R11 18.2k R31 16. BPB IN R41 11.3k 4 LPB 5 SB LTC1068-200 AGND 0.1µF 9 R63 2.55k NC 10 R53 SA 4.99k R43 20.5k ...
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... MIN .120 .100 (3.048) MIN (2.54) BSC LTC1068 Series 9.90 – 10.50* (.390 – .413 7.40 – 8.20 (.291 – .323 2.0 (.079) MAX 0.05 (.002) MIN G28 SSOP 0204 1 ...
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... LTC1068 Series U TYPICAL APPLICATION LTC1068-200 8th Order Notch, f Attenuation at f NOTCH R11 51. 8.06k 5V 8.06k RELATED PARTS PART NUMBER DESCRIPTION LTC1064 Universal Filter, Quad 2nd Order LTC1067/LTC1067-50 Low Power, Dual 2nd Order LTC1164 Low Power Universal Filter, Quad 2nd Order LTC1264 ...