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PIC16F631_08 Datasheet, PDF (257/306 Pages) Microchip Technology – 20-Pin Flash-Based, 8-Bit CMOS Microcontrollers with nanoWatt Technology | |||
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PIC16F631/677/685/687/689/690
TABLE 17-15: A/D CONVERTER (ADC) CHARACTERISTICS:
Standard Operating Conditions (unless otherwise stated)
Operating temperature -40°C ⤠TA ⤠+125°C
Param
No.
Sym.
Characteristic
Min. Typâ
Max. Units
Conditions
AD01 NR Resolution
â
â
10 bits bit
AD02 EIL Integral Error
â
â
±1
LSb VREF = 5.12V
AD03 EDL Differential Error
â
â
±1 LSb No missing codes to 10 bits
VREF = 5.12V
AD04 EOFF Offset Error
â
â
±1
LSb VREF = 5.12V
AD04A
â
+1.5
+3.0 LSb (PIC16F677 only)
AD07 EGN Gain Error
â
â
AD06 VREF Reference Voltage(3)
2.2
â
AD06A
2.5
±1
LSb VREF = 5.12V
â
V
VDD
Absolute minimum to ensure 1 LSb
accuracy
AD07 VAIN Full-Scale Range
VSS
â
VREF
V
AD08 ZAIN Recommended
â
â
10
kΩ
Impedance of Analog
Voltage Source
AD09* IREF VREF Input Current(3)
10
â
1000 μA During VAIN acquisition.
Based on differential of VHOLD to VAIN.
â
â
50
μA During A/D conversion cycle
* These parameters are characterized but not tested.
â Data in âTypâ 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 VREF 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.
© 2008 Microchip Technology Inc.
DS41262E-page 255
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