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LTC1279CSW Datasheet(PDF) 6 Page - Linear Technology |
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LTC1279CSW Datasheet(HTML) 6 Page - Linear Technology |
6 / 16 page 6 LTC1279 TYPICAL PERFORMANCE CHARACTERISTICS INPUT FREQUENCY (Hz) 10k 80 70 60 50 40 30 20 10 0 100k 1M 10M 1279 G04 fSAMPLE = 600kHz VIN = –60dB VIN = –20dB VIN = 0dB S/(N + D) vs Input Frequency and Amplitude INPUT FREQUENCY (Hz) 10k 0 –10 –20 –30 –40 –50 –60 –70 –80 –90 –100 100k 1M 1279 G06 2M THD 2ND HARMONIC 3RD HARMONIC fSAMPLE = 600kHz Distortion vs Input Frequency Peak Harmonic or Spurious Noise vs Input Frequency INPUT FREQUENCY (Hz) 10k 0 –10 –20 –30 –40 –50 –60 –70 –80 –90 –100 100k 1M 1279 G07 2M fSAMPLE = 600kHz INPUT FREQUENCY (Hz) 10k 80 70 60 50 40 30 20 10 0 100k 1M 10M 1279 G05 fSAMPLE = 600kHz Signal-to-Noise Ratio (Without Harmonics) vs Input Frequency Intermodulation Distortion Plot SOURCE RESISTANCE ( Ω) 10 2500 2000 1500 1000 500 0 100 1k 10k 1279 G09 TA = 25°C Acquisition Time vs Source Impedance Supply Current vs Temperature TEMPERATURE ( °C) –55 15 12 9 6 3 0 0 50 75 1279 G10 –25 25 100 125 fSAMPLE = 600kHz RIPPLE FREQUENCY (Hz) 1k 0 –20 –40 –60 –80 –100 –120 10k 100k 1M 1279 G11 fSAMPLE = 600kHz VSS(VRIPPLE = 10mV) AVDD(VRIPPLE = 1mV) DGND(VRIPPLE = 100mV) Power Supply Feedthrough vs Ripple Frequency LOAD CURRENT (mA) –8 2.435 2.430 2.425 2.420 2.415 2.410 2.405 2.400 2.395 2.390 –6 –4 –3 1 2 1279 G12 –7 –5 –2 –1 0 Reference Voltage vs Load Current FREQUENCY (kHz) 0 50 100 150 200 1279 G08 250 300 0 –10 –20 –30 –40 –50 –60 –70 –80 –90 –100 –110 –120 fSAMPLE = 600kHz fa = 94.189kHz fb = 97.705kHz (fb – fa) (2fa – fb) (2fa) (2fb) (3fa) (2fb – fa) (fa) (fb) (fa + fb) (2fa + fb) (fa + 2fb) (3fb) |
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