70592C Datasheet, PDF (282/314 Pages) Microchip Technology – High-Performance, 16-bit Microcontrollers

PIC24HJXXXGPX06A/X08A/X10A
TABLE 24-42: ADC CONVERSION (12-BIT MODE) TIMING REQUIREMENTS
AC CHARACTERISTICS
Standard Operating Conditions: 3.0V to 3.6V
(unless otherwise stated)
Operating temperature -40°C ≤ TA ≤ +85°C for Industrial
-40°C ≤TA ≤+125°C for Extended
Param
No.
Symbol
Characteristic
Min. Typ⁽²⁾ Max. Units
Conditions
AD50 TAD
AD51 tRC
AD55
AD56
AD57
tCONV
FCNV
TSAMP
AD60 tPCS
Clock Parameters⁽¹⁾
ADC Clock Period
117.6 —
—
ADC Internal RC Oscillator
Period
—
250
—
Conversion Rate
Conversion Time
— 14 TAD
Throughput Rate
—
— 500
Sample Time
3 TAD
—
—
Timing Parameters
Conversion Start from Sample
Trigger⁽²⁾
2.0 TAD
— 3.0 TAD
ns
ns
ns
ksps
—
—
—
—
—
—
—
Auto convert trigger not
selected
AD61 tPSS
Sample Start from Setting
2.0 TAD — 3.0 TAD —
—
Sample (SAMP) bit⁽²⁾
AD62 tCSS
Conversion Completion to
— 0.5 TAD —
—
—
Sample Start (ASAM = 1)⁽²⁾
AD63 tDPU
Time to Stabilize Analog Stage
—
—
20
μs
—
from ADC Off to ADC On^(2,3)
Note 1: Because the sample caps eventually loses charge, clock rates below 10 kHz may affect linearity
performance, especially at elevated temperatures.
2: These parameters are characterized but not tested in manufacturing.
3: tDPU is the time required for the ADC module to stabilize when it is turned on (AD1CON1<ADON> = 1).
During this time, the ADC result is indeterminate.
DS70592C-page 282
© 2011 Microchip Technology Inc.