PIC18F2331-E/ML MICROCHIP [Microchip Technology], PIC18F2331-E/ML Datasheet - Page 250

• Manufacturer Part Number: PIC18F2331-E/ML
• Description: 28/40/44-Pin Enhanced Flash Microcontrollers with nanoWatt Technology, High-Performance PWM and A/D
• Manufacturer: MICROCHIP [Microchip Technology]

PIC18F2331/2431/4331/4431
EXAMPLE 21-1:
FIGURE 21-2:
DS39616D-page 250
T
T
T
Temperature coefficient is only required for temperatures > 25°C. Below 25°C, T
T
T
ACQ
AMP
COFF
C
ACQ
Note: If the converter module has been in Sleep mode, T
=
=
=
=
=
Note:
Legend: C
T
Negligible
(Temp – 25°C)(0.005 s/°C)
(50°C – 25°C)(0.005 s/°C) = .13 s
-(C
-(9 pF) (1 k + 6 k + 100) ln(0.0004883) s = .49 s
0 + .49 s + .13 s = .62 s
V
AMP
AIN
HOLD
Rs
+ T
For V
) (R
V
I
R
SS
C
R
CALCULATING THE MINIMUM REQUIRED ACQUISITION TIME
ANALOG INPUT MODEL
C
LEAKAGE
T
PIN
IC
HOLD
SS
ANx
+ T
DD
IC
C
5 pF
PIN
COFF
< 2.7V and temperatures below 0°C, V
+ R
SS
= Input Capacitance
= Threshold Voltage
= Leakage Current at the pin due to
= Interconnect Resistance
= Sampling Switch
= Sample/Hold Capacitance (from DAC)
= Sampling Switch Resistance
various junctions
+ R
S
) ln(1/2047) s
V
DD
V
V
T
T
= 0.6V
= 0.6V
AMP
AIN
I
±100 nA
LEAKAGE
is 2.0 s from the time the part exits Sleep mode.
should be restricted to range: V
R
IC
 1k
COFF
V
SS
DD
Sampling
Switch
= 0 s.
6V
5V
4V
3V
2V
R
SS
 2010 Microchip Technology Inc.
Sampling Switch
5 6 7 8 9 10 11
V
AIN
SS
C
HOLD
< V
DD
= 9 pF
/2.
(k)