Datasheet

dsPIC33FJ32MC302/304, dsPIC33FJ64MCX02/X04 AND dsPIC33FJ128MCX02/X04
DS70291G-page 406 © 2007-2012 Microchip Technology Inc.
TABLE 31-48: AUDIO DAC MODULE SPECIFICATIONS
TABLE 31-47: ADC CONVERSION (10-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
(1)
Max Units Conditions
Clock Parameters
AD50 T
AD ADC Clock Period 76 — — ns —
AD51 t
RC ADC Internal RC Oscillator Period — 250 — ns —
Conversion Rate
AD55 t
CONV Conversion Time — 12 TAD — — —
AD56 F
CNV Throughput Rate — — 1.1 Msps —
AD57 TSAMP Sample Time 2 TAD — — — —
Timing Parameters
AD60 t
PCS Conversion Start from Sample
Trigger
(1)
2 TAD —3 TAD — Auto-Convert Trigger
not selected
AD61 tPSS Sample Start from Setting
Sample (SAMP) bit
(1)
2 TAD —3 TAD — —
AD62 t
CSS Conversion Completion to
Sample Start (ASAM = 1)
(1)
— 0.5 TAD — — —
AD63 t
DPU Time to Stabilize Analog Stage
from ADC Off to ADC On
(1)
— — 20 μs—
Note 1: These parameters are characterized but not tested in manufacturing.
2: Because the sample caps will eventually lose charge, clock rates below 10 kHz may affect linearity
performance, especially at elevated temperatures.
3: The t
DPU is the time required for the ADC module to stabilize at the appropriate level when the module is
turned on (AD1CON1<ADON>=‘1’). During this time, the ADC result is indeterminate.
AC/DC CHARACTERISTICS
Standard Operating Conditions: 3.0V to 3.6V
(unless otherwise stated)
Operating temperature -40°C ≤ T
A ≤ +85°C for Industrial
-40°C ≤ TA ≤ +125°C for Extended
Param
No.
Symbol Characteristic Min Typ Max Units Conditions
Clock Parameters
DA01 V
OD+ Positive Output Differential
Voltage
11.152 VVOD+ = VDACH - VDACL
See Note 1,2
DA02 V
OD- Negative Output Differential
Voltage
-2 -1.15 -1 V VOD- = VDACL - VDACH
See Note 1,2
DA03 V
RES Resolution — 16 — bits —
DA04 G
ERR Gain Error — 3.1 — % —
DA08 F
DAC Clock frequency — — 25.6 MHz —
DA09 F
SAMP Sample Rate 0 — 100 kHz —
DA10 F
INPUT Input data frequency 0 — 45 kHz Sampling frequency = 100 kHz
DA11 T
INIT Initialization period 1024 — — Clks Time before first sample
DA12 SNR Signal-to-Noise Ratio — 61 dB Sampling frequency = 96 kHz
Note 1: Measured V
DACH and VDACL output with respect to VSS, with 15 µA load and FORM bit (DACXCON<8>) = 0.
2: This parameter is tested at -40°C ≤ TA ≤ +85°C only.