PIC16F1946 Datasheet, PDF (405/440 Pages) Microchip Technology – 64-Pin Flash-Based, 8-Bit CMOS Microcontrollers with LCD Driver and nanoWatt XLP Technology

PIC16F/LF1946/47
TABLE 29-8: PIC16F/LF1946/47 A/D CONVERTER (ADC) CHARACTERISTICS:
Standard Operating Conditions (unless otherwise stated)
Operating temperature -40°C  TA  +125°C
Param
No.
Sym.
Characteristic
Min. Typ† Max. Units
Conditions
AD01 NR Resolution
—
—
10 bit
AD02 EIL Integral Error
—
—
±1.7 LSb VREF = 3.0V
AD03 EDL Differential Error
—
—
±1 LSb No missing codes
VREF = 3.0V
AD04 EOFF Offset Error
—
—
±2 LSb VREF = 3.0V
AD05 EGN Gain Error
AD06 VREF Reference Voltage⁽³⁾
—
—
±1.5 LSb VREF = 3.0V
1.8
—
VDD V
AD07 VAIN Full-Scale Range
VSS
—
VREF V
AD08 ZAIN Recommended Impedance of
Analog Voltage Source
—
—
50 k Can go higher if external 0.01F capacitor is
present on input pin.
*
†
Note 1:
2:
3:
4:
These parameters are characterized but not tested.
Data in “Typ” column is at 3.0V, 25°C unless otherwise stated. These parameters are for design guidance only and are not
tested.
Total Absolute Error includes integral, differential, offset and gain errors.
The A/D conversion result never decreases with an increase in the input voltage and has no missing codes.
ADC VREF is from external VREF, VDD pin or FVREF, whichever is selected as reference input.
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.
TABLE 29-9: PIC16F/LF1946/47 A/D CONVERSION REQUIREMENTS
Standard Operating Conditions (unless otherwise stated)
Operating temperature -40°C  TA  +125°C
Param
No.
Sym.
Characteristic
Min.
Typ†
Max. Units
Conditions
AD130* TAD A/D Clock Period
1.0
—
9.0 s TOSC-based
A/D Internal RC Oscillator
Period
1.0
1.6
6.0 s ADCS<1:0> = 11 (ADRC mode)
AD131 TCNV Conversion Time (not including —
11
— TAD Set GO/DONE bit to conversion
Acquisition Time)⁽¹⁾
complete
AD132* TACQ Acquisition Time
—
5.0
—
s
*
†
Note 1:
These parameters are characterized but not tested.
Data in “Typ” column is at 3.0V, 25°C unless otherwise stated. These parameters are for design guidance only and are not
tested.
The ADRES register may be read on the following TCY cycle.
 2010 Microchip Technology Inc.
Preliminary
DS41414A-page 403