SWRS243C February 2020 – December 2024 CC3235MODAS , CC3235MODASF , CC3235MODS , CC3235MODSF
PRODUCTION DATA
Refer to the PDF data sheet for device specific package drawings
Table 7-24 lists the ADC electrical specifications. See CC32xx ADC Appnote for further information on using the ADC and for application-specific examples.
Figure 7-15 ADC Clock Timing Diagram
Figure 7-15 shows the ADC clock timing diagram.
| PARAMETER | DESCRIPTION | TEST CONDITIONS / ASSUMPTIONS | MIN | TYP | MAX | UNIT |
|---|---|---|---|---|---|---|
| Nbits | Number of bits | 12 | Bits | |||
| INL | Integral nonlinearity | Worst-case deviation from histogram method over full scale (not including first and last three LSB levels) | –2.5 | 2.5 | LSB | |
| DNL | Differential nonlinearity | Worst-case deviation of any step from ideal | –1 | 4 | LSB | |
| Input range | 0 | 1.4 | V | |||
| Driving source impedance | 100 | Ω | ||||
| FCLK | Clock rate | Successive approximation input clock rate | 10 | MHz | ||
| Input capacitance | 12 | pF | ||||
| Input impedance | ADC Pin 57 | 2.15 | kΩ | |||
| ADC Pin 58 | 0.7 | |||||
| ADC Pin 59 | 2.12 | |||||
| ADC Pin 60 | 1.17 | |||||
| Number of channels | 4 | |||||
| Fsample | Sampling rate of each pin | 62.5 | KSPS | |||
| F_input_max | Maximum input signal frequency | 31 | kHz | |||
| SINAD | Signal-to-noise and distortion | Input frequency DC to 300 Hz and 1.4 Vpp sine wave input | 55 | 60 | dB | |
| I_active | Active supply current | Average for analog-to-digital during conversion without reference current | 1.5 | mA | ||
| I_PD | Power-down supply current for core supply | Total for analog-to-digital when not active (this must be the SoC level test) | 1 | µA | ||
| Absolute offset error | FCLK = 10 MHz | ±2 | mV | |||
| Gain error | ±2% | |||||
| Vref | ADC reference voltage | 1.467 | V |