Datasheet

 2006-2012 Microchip Technology Inc. DS41291G-page 267
PIC16F882/883/884/886/887
TABLE 17-10: PIC16F882/883/884/886/887 A/D CONVERTER (ADC) CHARACTERISTICS
Standard Operating Conditions (unless otherwise stated)
Operating temperature -40°C  T
A  +125°C
Param
No.
Sym. Characteristic Min. Typ† Max. Units Conditions
AD01 N
R Resolution — — 10 bits bit
AD02 E
IL Integral Error — — ±1 LSb VREF = 5.12V
AD03 EDL Differential Error — — ±1 LSb No missing codes to 10 bits
V
REF = 5.12V
AD04 E
OFF Offset Error 0 +1.5 +3.0 LSb VREF = 5.12V
AD07 EGN Gain Error — — ±1 LSb VREF = 5.12V
AD06
AD06A
VREF Reference Voltage
(3)
2.2
2.7
——
V
DD
V
Absolute minimum to ensure 1 LSb
accuracy
AD07 VAIN Full-Scale Range VSS —VREF V
AD08 Z
AIN Recommended
Impedance of Analog
Voltage Source
—— 10k
AD09* I
REF VREF Input Current
(3)
10 — 1000 ADuring VAIN acquisition.
Based on differential of V
HOLD to VAIN.
—— 50A During A/D conversion cycle.
* These parameters are characterized but not tested.
† Data in “Typ” column is at 5.0V, 25°C unless otherwise stated. These parameters are for design guidance
only and are not tested.
Note 1: Total Absolute Error includes integral, differential, offset and gain errors.
2: The A/D conversion result never decreases with an increase in the input voltage and has no missing
codes.
3: ADC V
REF is from external VREF or VDD pin, whichever is selected as reference input.
4: When ADC is off, it will not consume any current other than leakage current. The power-down current
specification includes any such leakage from the ADC module.