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PIC16LC773-04/SP Datasheet(PDF) 124 Page - Microchip Technology

Part # PIC16LC773-04/SP
Description  28/40-Pin, 8-Bit CMOS Microcontrollers w/ 12-Bit A/D
PDF  200 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

PIC16LC773-04/SP Datasheet(HTML) 124 Page - Microchip Technology

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PIC16C77X
DS30275A-page 124
Advance Information
© 1999 Microchip Technology Inc.
FIGURE 11-7: CALCULATING THE MINIMUM REQUIRED SAMPLE TIME
TACQ =
Amplifier Settling Time
+ Holding Capacitor Charging Time
+Temperature Coefficient
†
TACQ =5
µs
+ TC
+ [(Temp - 25
°C)(0.05 µs/°C)] †
TC =
+ Holding Capacitor Charging Time
TC =(CHOLD) (RIC + RSS + RS) In (1/16384)
TC =
-25 pF (1 k
Ω +10 kΩ + 2.5 kΩ) In (1/16384)
TC =
-25 pF (13.5 k
Ω) In (1/16384)
TC =
-0.338 (-9.704)
µs
TC =3.3
µs
TACQ =5
µs
+ 3.3
µs
+ [(50
°C - 25°C)(0.05 µs / °C)]
TACQ =8.3
µs + 1.25 µs
TACQ =
9.55
µs
† The temperature coefficient is only required for
temperatures > 25
°C.
FIGURE 11-8: ANALOG INPUT MODEL
CPIN
VA
Rs
Port Pin
5 pF
VDD
VT = 0.6V
VT = 0.6V
ILEAKAGE
RIC
≤ 1k
Sampling
Switch
SS
RSS
CHOLD = 25 pF
VSS
6V
Sampling Switch
5V
4V
3V
2V
567 8 9 10 11
( k
Ω )
VDD
± 100 nA
Legend CPIN
VT
ILEAKAGE
RIC
SS
CHOLD
= input capacitance
= threshold voltage
= leakage current at the pin due to
= interconnect resistance
= sampling switch
= sample/hold capacitance (from DAC)
various junctions



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