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DSPIC33FJ12GP201TE/ML Datasheet(PDF) 224 Page - Microchip Technology |
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DSPIC33FJ12GP201TE/ML Datasheet(HTML) 224 Page - Microchip Technology |
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224 / 242 page  dsPIC33FJ12GP201/202 DS70264B-page 222 Preliminary © 2007 Microchip Technology Inc. FIGURE 21-17: ADC CONVERSION (12-BIT MODE) TIMING CHARACTERISTICS (ASAM = 0, SSRC<2:0> = 000) TABLE 21-37: 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 Section 28. “10/12-bit ADC without DMA” in the “dsPIC33F Family Reference Manual”. Please see the Microchip web site for the latest dsPIC33F Family Reference Manual sections. 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(1) AD50 TAD ADC Clock Period 117.6 — — ns AD51 tRC ADC Internal RC Oscillator Period — 250 — ns Conversion Rate AD55 tCONV Conversion Time — 14 TAD ns AD56 FCNV Throughput Rate — — 500 Ksps AD57 TSAMP Sample Time 3 TAD —— — Timing Parameters AD60 tPCS Conversion Start from Sample Trigger(2) —1.0 TAD — — Auto Convert Trigger not selected AD61 tPSS Sample Start from Setting Sample (SAMP) bit(2) 0.5 TAD — 1.5 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) 1— 5 μs— Note 1: Because the sample caps will eventually lose charge, clock rates below 10 kHz can affect linearity performance, especially at elevated temperatures. 2: These parameters are characterized but not tested in manufacturing. |
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