Datasheet

PIC16F688
DS41203E-page 160 © 2009 Microchip Technology Inc.
TABLE 14-8: PIC16F688 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 — — ±1LSbVREF = 5.12V
AD03 EDL Differential Error — — ±1 LSb No missing codes to 10 bits
V
REF = 5.12V
AD04 E
OFF Offset Error — — ±1LSbVREF = 5.12V
AD07 EGN Gain Error — — ±1LSbVREF = 5.12V
AD06
AD06A
VREF Reference Voltage
(1)
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
—— 10kΩ
AD09* I
REF VREF Input Current
(1)
10 — 1000 μADuring VAIN acquisition.
Based on differential of V
HOLD to VAIN.
—— 50μA 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: ADC V
REF is from external VREF or VDD pin, whichever is selected as reference input.