PIC16F688 Datasheet, PDF (155/174 Pages) Microchip Technology – 14-Pin Flash-Based, 8-Bit CMOS Microcontrollers with nanoWatt Technology

PIC16F688
TABLE 14-10: PIC16F688 A/D CONVERTER CHARACTERISTICS:
Standard Operating Conditions (unless otherwise stated)
Operating Temperature-40°C ≤ TA ≤ +125°C
Param
No.
Sym
Characteristic
Min
Typ†
Max Units
Conditions
A01 NR Resolution
—
—
10 bits bit
A02 EABS Total Absolute
—
—
Error*⁽¹⁾
±1
LSb VREF = 5.0V
A03 EIL Integral Error
—
—
±1
LSb VREF = 5.0V
A04 EDL Differential Error
—
—
±1
LSb No missing codes to 10 bits
VREF = 5.0V
A05 EFS Full-scale Range 2.2*
—
5.5*
V
A06
EOFF Offset Error
—
—
±1
LSb VREF = 5.0V
A07 EGN Gain Error
A10 — Monotonicity
—
—
±1
— guaranteed⁽²⁾ —
LSb VREF = 5.0V
— VSS ≤ VAIN ≤ VREF+
A20 VREF Reference Voltage 2.2
A20A
2.5
—
—
V
VDD + 0.3
Absolute minimum to ensure 10-bit
accuracy
A25
VAIN Analog Input
VSS
—
Voltage
VREF
V
A30
ZAIN Recommended
—
—
Impedance of
Analog Voltage
Source
10
kΩ
A50
IREF VREF Input
Current*⁽³⁾
10
—
1000 µA During VAIN acquisition. Based on
differential of VHOLD to VAIN.
—
—
10
µA 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: VREF current is from external VREF or VDD pin, whichever is selected as reference input.
4: When A/D is off, it will not consume any current other than leakage current. The power-down current
_specification includes any such leakage from the A/D module.
 2004 Microchip Technology Inc.
Preliminary
DS41203B-page 153