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LTC1853 数据表(PDF) 3 Page - Linear Technology |
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LTC1853 数据表(HTML) 3 Page - Linear Technology |
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3 / 24 page  LTC1852/LTC1853 3 18523fa CONVERTER CHARACTERISTICS The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VDD = 2.7V to 5.5V, REFCOMP < VDD (Notes 5,6) PARAMETER CONDITIONS MIN LTC1852 TYP MAX MIN LTC1853 TYP MAX UNITS Resolution (No Missing Codes) l 10 12 Bits Integral Linearity Error (Note 7) l ±0.25 ±1 ±0.35 ±1 LSB Differential Linearity Error l ±0.25 ±1 ±0.25 ±1 LSB Offset Error (Bipolar and Unipolar) Gain = 1 (PGA = 1) Gain = 2 (PGA = 0) (Note 8) REFCOMP ≥ 2V l l ±0.5 ±1 ±2 ±4 ±1 ±2 ±6 ±12 LSB LSB Offset Error Match (Bipolar and Unipolar) ±0.5 ±1 LSB Unipolar Gain Error Gain = 1 (PGA = 1) Gain = 2 (PGA = 0) With External 4.096V Reference Applied to REFCOMP (Note 12) VDD = 4.75V to 5.25V, fS ≤ 400kHz ±2 ±4 ±4 ±8 LSB LSB Unipolar Gain Error Match ±0.5 ±1 LSB Bipolar Gain Error Gain = 1 (PGA = 1) Gain = 2 (PGA = 0) With External 4.096V Reference Applied to REFCOMP (Note 12) VDD = 4.75V to 5.25V, fS ≤ 400kHz ±2 ±4 ±4 ±8 LSB LSB Bipolar Gain Error Match ±0.5 ±1 LSB Unipolar Gain Error Gain = 1 (PGA = 1) Gain = 2 (PGA = 0) With External 2.5V Reference Applied to REFCOMP VDD = 2.7V to 5.5V, fS ≤ 250kHz l l ±1 ±2 ±3 ±6 ±1.5 ±3 ±8 ±16 LSB LSB Bipolar Gain Error Gain = 1 (PGA = 1) Gain = 2 (PGA = 0) With External 2.5V Reference Applied to REFCOMP VDD = 2.7V to 5.5V, fS ≤ 250kHz l l ±1 ±2 ±3 ±6 ±1.5 ±3 ±8 ±16 LSB LSB Full-Scale Error Temperature Coefficient 15 15 ppm/°C SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS VIN Analog Input Range (Note 9) Unipolar, Gain = 1 (PGA = 1) Unipolar, Gain = 2 (PGA = 0) Bipolar, Gain = 1 (PGA = 1) Bipolar, Gain = 2 (PGA = 0) 2.7V ≤ VDD ≤ 5.5V, REFCOMP ≤ VDD 0 – REFCOMP 0 – REFCOMP/2 ± REFCOMP/2 ±REFCOMP/4 V V V V IIN Analog Input Leakage Current l ±1 μA CIN Analog Input Capacitance Between Conversions (Gain = 1) Between Conversions (Gain = 2) During Conversions 15 25 5 pF pF pF tACQ Sample-and-Hold Acquisition Time 50 150 ns tS(MUX) Multiplexer Settling Time (Includes tACQ) 50 150 ns tAP Sample-and-Hold Aperture Delay Time VDD = 5V – 0.5 ns tjitter Sample-and-Hold Aperture Delay Time Jitter VDD = 5V 2 psRMS CMRR Analog Input Common Mode Rejection Ratio 60 dB ANALOG INPUT The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. (Notes 5) DYNAMIC ACCURACY T A = 25°C. (Notes 5) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS S/(N + D) Signal-to-Noise Plus Distortion Ratio 40kHz Input Signal 72.5 dB THD Total Harmonic Distortion 40kHz Input Signal, First 5 Harmonics –80 dB SFDR Spurious Free Dynamic Range 40kHz Input Signal –85 dB |
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