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DSPIC33FJMC202ESS Datasheet(PDF) 277 Page - Microchip Technology |
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DSPIC33FJMC202ESS Datasheet(HTML) 277 Page - Microchip Technology |
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277 / 330 page  © 2007-2012 Microchip Technology Inc. DS70283K-page 277 dsPIC33FJ32MC202/204 and dsPIC33FJ16MC304 FIGURE 24-26: ADC CONVERSION (12-BIT MODE) TIMING CHARACTERISTICS (ASAM = 0, SSRC<2:0> = 000) TABLE 24-45: ADC CONVERSION (12-BIT MODE) TIMING REQUIREMENTS AD55 TSAMP Clear SAMP Set SAMP AD61 ADCLK Instruction SAMP AD60 DONE AD1IF 1 2 3 4 5 6 8 7 1 – Software sets AD1CON. SAMP to start sampling. 2 – Sampling starts after discharge period. TSAMP is described in 3 – Software clears AD1CON. SAMP to start conversion. 4 – Sampling ends, conversion sequence starts. 5 – Convert bit 11. 9 – One TAD for end of conversion. AD50 9 6 – Convert bit 10. 7 – Convert bit 1. 8 – Convert bit 0. Execution in the “dsPIC33F/PIC24H Family Reference Manual”. Section 16. “Analog-to-Digital Converter (ADC)” (DS70183) AC CHARACTERISTICS Standard Operating Conditions: 3.0V to 3.6V (unless otherwise stated) Operating temperature -40°C ≤TA ≤+85°C for Industrial -40°C ≤TA ≤+125°C for Extended Param No. Symbol Characteristic Min. Typ Max. Units Conditions Clock Parameters AD50 TAD ADC Clock Period(2) 117.6 — — ns — AD51 tRC ADC Internal RC Oscillator Period(2) — 250 — ns — Conversion Rate AD55 tCONV Conversion Time(2) — 14 TAD —ns — AD56 FCNV Throughput Rate(2) —— 500 Ksps — AD57 TSAMP Sample Time(2) 3.0 TAD —— — — Timing Parameters AD60 tPCS Conversion Start from Sample Trigger(2) 2.0 TAD — 3.0 TAD — Auto convert trigger not selected AD61 tPSS Sample Start from Setting Sample (SAMP) bit(2) 2.0 TAD — 3.0 TAD —— AD62 tCSS Conversion Completion to Sample Start (ASAM = 1)(2) — 0.5 TAD —— — AD63 tDPU Time to Stabilize Analog Stage from ADC Off to ADC On(2) —— 20 μs— Note 1: Because the sample caps will eventually lose charge, clock rates below 10 kHz may affect linearity performance, especially at elevated temperatures. 2: These parameters are characterized but not tested in manufacturing. |
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