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LTC1067-50 Dataheets PDF



Part Number LTC1067-50
Manufacturers Linear Technology
Logo Linear Technology
Description Rail-to-Rail/ Very Low Noise Universal Dual Filter Building Block
Datasheet LTC1067-50 DatasheetLTC1067-50 Datasheet (PDF)

LTC1067/LTC1067-50 Rail-to-Rail, Very Low Noise Universal Dual Filter Building Block FEATURES s s s s s DESCRIPTION The LTC ®1067/LTC1067-50 consist of two identical railto-rail, high accuracy and very wide dynamic range 2nd order switched-capacitor building blocks. Each building block, together with three to five resistors, provides 2nd order filter functions such as bandpass, highpass, lowpass, notch and allpass. High precision 4th order filters are easily designed. The center frequency of e.

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LTC1067/LTC1067-50 Rail-to-Rail, Very Low Noise Universal Dual Filter Building Block FEATURES s s s s s DESCRIPTION The LTC ®1067/LTC1067-50 consist of two identical railto-rail, high accuracy and very wide dynamic range 2nd order switched-capacitor building blocks. Each building block, together with three to five resistors, provides 2nd order filter functions such as bandpass, highpass, lowpass, notch and allpass. High precision 4th order filters are easily designed. The center frequency of each 2nd order section is tuned by the external clock frequency. The internal clock-to-center frequency ratio (100:1 for the LTC1067 and 50:1 for the LTC1067-50) can be modified by the external resistors. These devices have a double sampled architecture which places aliasing and imaging components at twice the clock frequency. The LTC1067-50 is a low power device consuming about one half the current of the LTC1067. The LTC1067-50’s typical supply current is about 1mA from a 3.3V supply. The LTC1067 and LTC1067-50 are available in 16-pin narrow SSOP and SO packages. Mask programmable versions of the LTC1067 and LTC1067-50, with thin film resistors on-chip and custom clock-to-cutoff frequency ratios, can be designed in an SO-8 package to realize application specific monolithic filters. Please contact LTC Marketing for more details. s s s s Rail-to-Rail Input and Output Operation Operates from a Single 3V to ± 5V Supply Dual 2nd Order Filter in a 16-Lead SSOP Package > 80dB Dynamic Range on Single 3.3V Supply Clock-to-Center Frequency Ratio of 100:1 for the LTC1067 and 50:1 for the LTC1067-50 Internal Sampling-to-Center Frequency Ratio of 200:1 for the LTC1067 and 100:1 for the LTC1067-50 Center Frequency Error < ± 0.2% Typ Low Noise: < 40µVRMS, Q ≤ 5 Customizable with Internal Resistors U APPLICATIONS s s s s Notch Filters Narrowband Bandpass Filters Tone Detection Noise Reduction Systems , LTC and LT are registered trademarks of Linear Technology Corporation. TYPICAL APPLICATION Single 3.3V Supply Rail-to-Rail, 4th Order, 10kHz Bandpass Filter 1 2 3.3V 0.1µF 3 4 5 R31, 200k R21, 10k R11 200k IN 6 7 8 V+ NC V+ SA CLK AGND 16 15 1µF fCLK = 500kHz 0 –10 GAIN (dB) 14 V– 13 SB –20 LTC1067-50 12 LPA LPB BPA HPA/NA INV A BPB HPB/NB INV B 11 10 9 R32, 200k OUT –30 R22, 10k –40 TOTAL OUTPUT NOISE: 90µVRMS S/N RATIO: 80dB 1067 TA01 RB1, 200k 8 U U Frequency Response 9 10 FREQUENCY (kHz) 11 12 1067 • TA02 1 LTC1067/LTC1067-50 ABSOLUTE MAXIMUM RATINGS Total Voltage Supply (V + to .............................. 12V Input Voltage ........................ (V + + 0.3V) to (V – – 0.3V) Output Short-Circuit Duration .......................... Indefinite Power Dissipation............................................... 500mV Operating Temperature Range LTC1067C................................................ 0°C to 70°C LTC1067I............................................ – 40°C to 85°C Storage Temperature Range ................. – 65°C to 150°C Lead Temperature (Soldering, 10 sec).................. 300°C V –) PACKAGE/ORDER INFORMATION TOP VIEW V+ 1 16 CLK 15 AGND 14 V – 13 SB 12 LPB 11 BPB 10 HPB/NB 9 INV B ORDER PART NUMBER LTC1067CGN LTC1067-50CGN LTC1067IGN LTC1067-50IGN LTC1067CS LTC1067-50CS LTC1067IS LTC1067-50IS NC 2 V+ 3 SA 4 LPA 5 BPA 6 HPA/NA 7 INV A 8 GN PACKAGE S PACKAGE 16-LEAD PLASTIC SSOP 16-LEAD PLASTIC SO TJMAX = 110°C, θJA = 135°C/ W (GN) TJMAX = 110°C, θJA = 115°C/ W (S) Consult factory for Military grade parts. ELECTRICAL CHARACTERISTICS PARAMETER Operating Supply Range Positive Output Voltage Swing CONDITIONS VS = 3V, RL = 10k VS = 4.75V, RL = 10k VS = ± 5V, RL = 10k VS = 3V, RL = 10k VS = 4.75V, RL = 10k VS = ± 5V, RL = 10k VS = 3V VS = 4.75V VS = ± 5V RL = 10k RL = 10k RL = 10k LTC1067 (internal op amps) VS = 4.75V, TA = 25°C, unless otherwise noted. MIN 3 2.65 4.25 4.15 TYP 2.80 4.50 4.50 0.020 0.025 – 4.96 16/1.0 33/2.2 70/7.2 90 2.8 2.25 MAX 11 UNITS V V V V V V V mA mA mA dB MHz V/µs q q q q q q Negative Output Voltage Swing 0.200 0.225 – 4.80 Output Short-Circuit Current (Source/Sink) DC Open-Loop Gain GBW Product Slew Rate LTC1067 (complete filter) VS = 4.75V, fCLK = 250kHz, TA = 25°C, unless otherwise noted. PARAMETER Center Frequency Range, fO (Note 1) Input Frequency Range Clock-to-Center Frequency, fCLK/fO CONDITIONS MIN TYP 0.001 to 20 0 to 1 100:1 ± 0.2 100:1 ± 0.2 q MAX Clock-to-Center Frequency Ratio, Side-to-Side Matching VS = 3V, fCLK = 250kHz, Mode 1, fO = 2.5kHz, Q = 5 R1 = R3 = 49.9k, R2 = 10k VS = 4.75V, fCLK = 250kHz, Mode 1, fO = 2.5kHz, Q = 5 R1 = R3 = 49.9k, R2 = 10k VS = ± 5V, fCLK = 500kHz, Mode 1, fO = 5kHz, Q = 5 R1 = R3 = 49.9k, R2 = 10k VS = 3V, fCLK = 250kHz, Q = 5 VS = 4.75V, fCLK = 250kHz, Q = 5 VS = ± 5V, fCLK = 500kHz, Q = 5 q ± 0.70 ± 0.70 ± 0.70 ± 0.35 ± 0.35 ± 0.35 100:1 ± 0.2 q q q q ± 0.1 ± 0.1 ± 0.1 UNITS kHz MHz % % % % % % % % % 2 U W U U W W W LTC1067/LTC1067-50 LTC1067 (complete filter) VS = 4.75V, fCLK = 250kHz, TA .


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