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PIC16F87_05 Datasheet, PDF (192/228 Pages) Microchip Technology – 18/20/28-Pin Enhanced Flash Microcontrollers with nanoWatt Technology | |||
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PIC16F87/88
TABLE 18-13: A/D CONVERTER CHARACTERISTICS: PIC16F87/88 (INDUSTRIAL, EXTENDED)
PIC16LF87/88 (INDUSTRIAL)
Param
No.
Sym
Characteristic
Min
Typâ
Max
Units
Conditions
A01 NR Resolution
â
â
10-bit
bit VREF = VDD = 5.12V,
VSS ⤠VAIN ⤠VREF
A03 EIL Integral Linearity Error
â
â
<±1
LSb VREF = VDD = 5.12V,
VSS ⤠VAIN ⤠VREF
A04 EDL Differential Linearity Error
â
â
<±1
LSb VREF = VDD = 5.12V,
VSS ⤠VAIN ⤠VREF
A06 EOFF Offset Error
â
â
<±2
LSb VREF = VDD = 5.12V,
VSS ⤠VAIN ⤠VREF
A07 EGN Gain Error
A10
â Monotonicity
â
â
<±1
â
guaranteed(3)
â
LSb VREF = VDD = 5.12V,
VSS ⤠VAIN ⤠VREF
â VSS ⤠VAIN ⤠VREF
A20 VREF Reference Voltage
(VREF+ â VREF-)
2.0
â
VDD + 0.3
V
A21 VREF+ Reference Voltage High
AVDD â 2.5V
AVDD + 0.3V V
A22 VREF- Reference Voltage Low
AVSS â 0.3V
VREF+ â 2.0V V
A25 VAIN Analog Input Voltage
VSS â 0.3V
â
VREF + 0.3V V
A30 ZAIN Recommended Impedance of
â
â
2.5
k⦠(Note 4)
Analog Voltage Source
A40 IAD A/D Conversion PIC16F87/88
â
220
â
µA Average current
Current (VDD) PIC16LF87/88
â
90
â
µA consumption when A/D is on
(Note 1)
A50 IREF VREF Input Current (Note 2)
â
â
5
µA During VAIN acquisition.
Based on differential of VHOLD
to VAIN to charge CHOLD,
see Section 12.1 âA/D
Acquisition Requirementsâ.
â
â
150
µA During A/D conversion cycle
* These parameters are characterized but not tested.
â Data in âTypâ column is at 5V, 25°C unless otherwise stated. These parameters are for design guidance only and are
not tested.
Note 1: When A/D is off, it will not consume any current other than minor leakage current. The power-down current specification
includes any such leakage from the A/D module.
2: VREF current is from RA3 pin or VDD pin, whichever is selected as reference input.
3: The A/D conversion result never decreases with an increase in the input voltage and has no missing codes.
4: Maximum allowed impedance for analog voltage source is 10 kâ¦. This requires higher acquisition time.
DS30487C-page 190
 2005 Microchip Technology Inc.
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