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PIC16F87-I/ML Datasheet(PDF) 190 Page - Microchip Technology |
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PIC16F87-I/ML Datasheet(HTML) 190 Page - Microchip Technology |
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190 / 214 page  PIC16F87/88 DS30487B-page 188 Preliminary 2003 Microchip Technology Inc. TABLE 18-13: A/D CONVERTER CHARACTERISTICS: PIC16F87/88 (INDUSTRIAL, EXTENDED) PIC16LF87/88 (INDUSTRIAL) Param No. Sym Characteristic Min Typ† Max Units Conditions A01 NR Resolution — — 10 bits bit VREF = VDD = 5.12V, VSS ≤ VAIN ≤ VREF A03 EIL Integral linearity error — — < ± 1 LSb VREF = VDD = 5.12V, VSS ≤ VAIN ≤ VREF A04 EDL Differential linearity error — — < ± 1 LSb VREF = VDD = 5.12V, VSS ≤ VAIN ≤ VREF A06 EOFF Offset error — — < ± 2 LSb VREF = VDD = 5.12V, VSS ≤ VAIN ≤ VREF A07 EGN Gain error — — < ± 1 LSb VREF = VDD = 5.12V, VSS ≤ VAIN ≤ VREF A10 — Monotonicity(3) — guaranteed — — VSS ≤ VAIN ≤ VREF A20 VREF Reference Voltage 2.5 2.2 — — VDD + 0.3 VDD + 0.3 V V -40°C to +85°C 0°C to +85°C A21 VREF+ Reference voltage high AVDD – 2.5V AVDD + 0.3V V A22 VREF- Reference voltage low AVSS – 0.3V VREF+ – 2.0V V A25 VAIN Analog input voltage VSS – 0.3V — VREF + 0.3V V A30 ZAIN Recommended impedance of analog voltage source ——2.5 k Ω See (Note 4) A50 IREF VREF input current(2) — — — — 5 500 µA µA During VAIN acquisition. Based on differential of VHOLD to VAIN to charge CHOLD, see Section 12.1 “A/D Acquisition Requirements”. During A/D Conversion cycle. † Data in “Typ” column is at 5V, 25°C unless otherwise stated. These parameters are for design guidance only and are not tested. Note 1: VREF current is from RA3 pin or VDD pin, whichever is selected as reference input. 2: The A/D conversion result never decreases with an increase in the input voltage, and has no missing codes. 3: The maximum allowed impedance for analog voltage source is 10 k Ω. This requires higher acquisition times. |
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