Datasheet
© 2008 Microchip Technology Inc. DS41249E-page 159
PIC16F785/HV785
TABLE 19-14: SHUNT REGULATOR SPECIFICATIONS (PIC16HV785 only)
TABLE 19-15: PIC16F785/HV785 A/D CONVERTER CHARACTERISTICS:
SHUNT REGULATOR CHARACTERISTICS
Standard Operating Conditions (unless otherwise stated)
Operating temperature -40°C ≤ T
A ≤ +125°C
Param
No.
Symbol Characteristics Min Typ Max Units Comments
SR01 V
SHUNT Shunt Voltage 4.75 5 5.25 V
SR02 ISHUNT Shunt Current 4 — 50 mA
SR03* TSETTLE Settling Time — — 150 ns To 1% of final value
SR04* C
LOAD Load Capacitance 0.01 — 10 μF Bypass capacitor on VDD
pin
SR05* ΔI
SNT Regulator operating current — — 180 μA Includes band gap
reference current
* These parameters are characterized but not tested.
Param
No.
Sym Characteristic Min Typ† Max Units Conditions
A01 NR Resolution — — 10 bits bit
A03 E
IL Integral Error — — ±1LSbVREF = 5.0V (external)
A04 EDL Differential Error — — ±1 LSb No missing codes to 10 bits
V
REF = 5.0V (external)
A06 E
OFF Offset Error — — ±1LSbVREF = 5.0V (external)
A07 EGN Gain Error — — ±1LSbVREF = 5.0V (external)
A20
A20A
VREF Reference Voltage 2.2
(4)
1.0
——
VDD + 0.3
V
Absolute minimum to ensure 10-bit
accuracy
A25 V
AIN Analog Input
Voltage
VSS —VREF
(5)
V
A30 Z
AIN Recommended
Impedance of
Analog Voltage
Source
—— 10kΩ
A50 I
REF VREF Input
Current*
(3)
—
—
—
—
150
1
μA
mA
During V
AIN acquisition.
Based on differential of V
HOLD to
V
AIN.
Transient 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: V
REF current is from external VREF or VDD pin, whichever is selected as reference input.
4: Only limited when V
DD is at or below 2.5V. If VDD is above 2.5V, VREF is allowed to go as low as 1.0V.
5: Analog input voltages are allowed up to V
DD, however the conversion accuracy is limited to VSS to VREF.