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PIC12CE673 数据表(PDF) 96 Page - Microchip Technology |
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PIC12CE673 数据表(HTML) 96 Page - Microchip Technology |
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96 / 116 page  PIC12CE67X DS40181B-page 96 Preliminary © 1998 Microchip Technology Inc. TABLE 12-9: A/D CONVERTER CHARACTERISTICS: PIC12LCE673-04 (COMMERCIAL, INDUSTRIAL) PIC12LCE674-04 (COMMERCIAL, INDUSTRIAL) Parameter No. Sym Characteristic Min Typ† Max Units Conditions NR Resolution — — 8-bits — VREF = VDD = 3.0V (Notes 1,4) NINT Integral error — — less than ±1 LSb — VREF = VDD = 3.0V (Notes 1,4) NDIF Differential error — — less than ±1 LSb — VREF = VDD = 3.0V (Notes 1,4) NFS Full scale error — — less than ±1 LSb — VREF = VDD = 3.0V (Notes 1,4) NOFF Offset error — — less than ±1 LSb — VREF = VDD = 3.0V (Notes 1,4) — Monotonicity — Typ — — VSS ≤ AIN ≤ VREF VREF Reference voltage TBD — VDD + 0.3 V VAIN Analog input voltage VSS - 0.3 — VREF + 0.3 V ZAIN Recommended impedance of ana- log voltage source — — 10.0 k Ω IAD A/D conversion cur- rent (VDD) — TBD — µA Average current consumption when A/D is on. (Note 2) IREF VREF input current (Note 3) — — TBD TBD mA µA During sampling All other times * These parameters are characterized but not tested. † 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: These specifications apply if VREF = 3.0V and if VDD ≥ 3.0V. VIN must be between VSS and VREF 2: When A/D is off, it will not consume any current other than minor leakage current. The power-down current spec includes any such leakage from the A/D module. 3: VREF current is from GP1 pin or VDD pin, whichever is selected as reference input. 4: When using external VREF, VDD must be greater than 3V for +1 LSB accuracy. If VDD is less than 3V, you must use internal VREF for +1 LSB. |
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