LTC1864/LTC1865 CONVERTER AND MULTIPILEXER CHARACTERISTICSThe l denotes the specifi cations which apply over the full operating temperature range, otherwise specifi cations are at TA = 25°C.VCC = 5V, VREF = 5V, fSCK = fSCK(MAX) as defi ned in Recommended Operating Conditions, unless otherwise noted.LTC1864/LTC1865LTC1864A/LTC1865APARAMETERCONDITIONSMINTYPMAXMINTYPMAXUNITS Resolution l 16 16 Bits No Missing Codes Resolution l 14 15 Bits INL (Note 3) l ±8 ±6 LSB H-Grade (Note 3) l ±8.5 ±6.5 LSB Transition Noise 1.1 1.1 LSBRMS Gain Error l ±20 ±20 mV Offset Error LTC1864 SO-8 and MSOP, LTC1865 MSOP l ±2 ±5 ±2 ±5 mV LTC1865 SO-8 l ±3 ±7 ±3 ±7 mV Input Differential Voltage Range VIN = IN+ – IN– l 0 VREF 0 VREF V Absolute Input Range IN+ Input –0.05 VCC + 0.05 –0.05 VCC + 0.05 V IN– Input –0.05 VCC/2 –0.05 VCC/2 V VREF Input Range LTC1864 SO-8 and MSOP, 1 VCC 1 VCC V LTC1865 MSOP Analog Input Leakage Current (Note 4) l ±1 ±1 μA CIN Input Capacitance In Sample Mode 12 12 pF During Conversion 5 5 pF DYNAMIC ACCURACYTA = 25°C. VCC = 5V, VREF = 5V, fSAMPLE = 250kHz, unless otherwise noted.LTC1864/LTC1865SYMBOLPARAMETERCONDITIONSMINTYPMAXUNITS SNR Signal-to-Noise Ratio 87 dB S/(N + D) Signal-to-Noise Plus Distortion Ratio 10kHz Input Signal 83 dB 100kHz Input Signal 76 dB THD Total Harmonic Distortion Up to 5th Harmonic 10kHz Input Signal 88 dB 100kHz Input Signal 77 dB Full Power Bandwidth 20 MHz Full Linear Bandwidth S/(N+D) ≥ 75dB 125 kHz 18645fb 4
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