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LTC1851IFW Datasheet(PDF) 4 Page - Linear Technology |
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LTC1851IFW Datasheet(HTML) 4 Page - Linear Technology |
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4 / 28 page  4 LTC1850/LTC1851 18501f SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS VIH High Level Input Voltage VDD = 5.25V q 2.4 V VIL Low Level Input Voltage VDD = 4.75V q 0.8 V IIN Digital Input Current VIN = 0V to VDD q ±5 µA CIN Digital Input Capacitance 2pF VOH High Level Output Voltage VDD = 4.75V, IO = –10µA 4.5 V VDD = 4.75V, IO = – 200µA q 4.0 V VOL Low Level Output Voltage VDD = 4.75V, IO = 160µA 0.05 V VDD = 4.75V, IO = 1.6mA q 0.10 0.4 V IOZ Hi-Z Output Leakage D11 to D0, ADOUT, A1OUT, A2OUT, DIFFOUT VOUT = 0V to VDD, CS High q ±10 µA COZ Hi-Z Capacitance D11 to D0, ADOUT, A1OUT, A2OUT, DIFFOUT CS High (Note 9) q 15 pF ISOURCE Output Source Current VOUT = 0V – 20 mA ISINK Output Sink Current VOUT = VDD 30 mA The q denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. (Note 5) DIGITAL I PUTS A D DIGITAL OUTPUTS PARAMETER CONDITIONS MIN TYP MAX UNITS REFOUT Output Voltage IOUT = 0 2.48 2.50 2.52 V REFOUT Output Temperature Coefficient IOUT = 0 ±15 ppm/ °C REFOUT Line Regulation 0.01 LSB/V Reference Buffer Gain VREFCOMP/VREFIN 1.636 1.638 1.640 V/V REFCOMP Output Voltage External 2.5V Reference 4.090 4.096 4.100 V Internal 2.5V Reference 4.060 4.096 4.132 V REFCOMP Impedance REFIN = VDD 6.4 k Ω TA = 25°C. (Notes 5, 6) I TER AL REFERE CE LTC1850 LTC1851 SYMBOL PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS SNR Signal-to-Noise Ratio 47kHz Input Signal Unipolar, PGA = 0 61.6 71 dB Unipolar, PGA = 1 61.7 72 dB Bipolar, PGA = 0 61.6 71 dB Bipolar, PGA = 1 61.7 72 dB S/(N+D) Signal-to-(Noise + Distortion) Ratio 47kHz Input Signal Unipolar, PGA = 0 61.0 70 dB Unipolar, PGA = 1 61.0 71 dB Bipolar, PGA = 0 61.0 71 dB Bipolar, PGA = 1 61.2 72 dB THD Total Harmonic Distortion 47kHz Input Signal, Unipolar, PGA = 0 First 5 Harmonics –76 –80 dB Unipolar, PGA = 1 –78 –82 dB Bipolar, PGA = 0 –81 –87 dB Bipolar, PGA = 1 –80 –86 dB SFDR Spurious-Free Dynamic Range 47kHz Input Signal Unipolar, PGA = 0 74 82 dB Unipolar, PGA = 1 80 86 dB Bipolar, PGA = 0 84 90 dB Bipolar, PGA = 1 82 88 dB DY A IC ACCURACY (Note 5) |
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