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LTC1564 Datasheet(PDF) 11 Page - Linear Technology |
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LTC1564 Datasheet(HTML) 11 Page - Linear Technology |
11 / 12 page 11 LTC1564 1564fa TYPICAL APPLICATIO S 16-Bit Output, Sampling Rate to 500ksps, Analog Bandwidth to 150kHz, Gain to 24dB. (For More Information, See Linear Technology Magazine, May 2001) 2-Chip Flexible DSP Front End with Amplification, Antialias Filtering and A/D Conversion Boosting a 100mVRMS Input Signal to Nearly Fill the Input Range of the LTC1608 ADC. Input Frequency of 40kHz, LTC1608 fSAMPLE = 204.8ksps, LTC1564 is Set for fC = 50kHz and Gain of 16 (F = 0101, G = 1111). Measured THD is 86dB, HD2 = – 88dB, SNR = 85dB with 100mVRMS Input. Dynamic Range of Approximately 115dB 4096-Point FFT Spectrum with Low Level Input FREQUENCY (kHz) 0 –60 –40 0 76.8 1564 TA04 –80 –100 25.6 51.2 102.4 –120 –140 –20 2.2 µF 1 µF 1 µF 10 Ω 22 µF 4 6 DIFFERENTIAL ANALOG INPUT ±2.5V REFCOMP CONTROL LOGIC AND TIMING B15 TO B0 16-BIT SAMPLING ADC – + 1 µF 5V OR 3V µP CONTROL LINES D15 TO D0 OUTPUT BUFFERS 16-BIT PARALLEL BUS 11 TO 26 OGND OVDD 28 1564 TA03 29 1 2 AIN + AIN – SHDN CS CONVST RD BUSY 33 32 31 30 27 7.5k LTC1608 3 36 35 10 9 5V 5V AVDD AVDD DVDD DGND VREF 8 AGND AGND 7 AGND 5 AGND 34 –5V VSS 1 µF 2.5V REF 1 µF 1.75X + V+ EN V– OUT AGND IN 16 CS/ HOLD RST F 4 5 6 7 8 9 10 11 12 15 1 2 3 14 13 G LTC1564 5V –5V 0.1 µF 0.1 µF 249 Ω 1% METAL FILM 249 Ω 1% METAL FILM C1* FILTER CONTROL ANTIALIAS FILTER/AMP ADC AV fC INPUT + – *C1 IS A 1000pF NPO, SURFACE MOUNT DEVICE PLACE AS CLOSE AS POSSIBLE TO THE LTC1608 INPUT PINS AV 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. |
Similar Part No. - LTC1564_15 |
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Similar Description - LTC1564_15 |
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