ZHCSH08 October 2017 MSP432E411Y
PRODUCTION DATA.
| PARAMETER | MIN | TYP | MAX | UNIT | |
|---|---|---|---|---|---|
| Power supply requirements | |||||
| VDDA | ADC supply voltage | 2.97 | 3.3 | 3.63 | V |
| GNDA | ADC ground voltage | 0 | V | ||
| VDDA and GNDA voltage reference | |||||
| CREF | Voltage reference decoupling capacitance | 1.0 // 0.01 (2) | µF | ||
| External voltage reference input | |||||
| VREFA+ | Positive external voltage reference for ADC, when VREF field in the ADCCTL register is 0x1(3) | 2.4 | VDDA | VDDA | V |
| VREFA- | Negative external voltage reference for ADC, when VREF field in the ADCCTL register is 0x1 (3) | GNDA | GNDA | 0.3 | V |
| IVREF | Current on VREF+ input, using external VREF+ = 3.3 V | 330.5 | 440 | µA | |
| ILVREF | DC leakage current on VREF+ input when external VREF disabled | 2.0 | µA | ||
| CREF | External reference decoupling capacitance (3) | 1.0 // 0.01 (2) | µF | ||
| Analog input | |||||
| VADCIN | Single-ended, full-scale analog input voltage, internal reference(4)(5) | 0 | VDDA | V | |
| Differential, full-scale analog input voltage, internal reference (4)(6) | –VDDA | VVDDA | |||
| Single-ended, full-scale analog input voltage, external reference (3)(5) | VREFA- | VREFA+ | |||
| Differential, full-scale analog input voltage, external reference (3)(7) | –(VREFA+ – VREFA-) | VREFA+ – VREFA- | |||
| VINCM | Input common-mode voltage, differential mode (8) | [(VREFA+ + VREFA-) / 2] ±0.025 | V | ||
| IL | ADC input leakage current(9) | 2.0 | µA | ||
| RADC | ADC equivalent input resistance (9) | 2.5 | kΩ | ||
| CADC | ADC equivalent input capacitance (9) | 10 | pF | ||
| RS | Analog source resistance (9) | 250 | Ω | ||
| Sampling dynamics | |||||
| fADC | ADC conversion clock frequency(10) | 32 | MHz | ||
| fCONV | ADC conversion rate | 2 | Msps | ||
| tS | ADC sample time | 125 | ns | ||
| tC | ADC conversion time (11) | 0.5 | µs | ||
| tLT | Latency from trigger to start of conversion | 2 | ADC clock cycles | ||
| System performance when using external reference(12)(13) | |||||
| N | Resolution | 12 | bits | ||
| INL | Integral nonlinearity error, over full input range | ±1.5 | ±3.0 | LSB | |
| DNL | Differential nonlinearity error, over full input range | ±0.8 | +2.0/–1.0 (14) | LSB | |
| EO | Offset error | ±1.0 | ±3.0 | LSB | |
| EG | Gain error (15) | ±2.0 | ±3.0 | LSB | |
| ET | Total unadjusted error, over full input range (16) | ±2.5 | ±4.0 | LSB | |
| System performance when using internal reference | |||||
| N | Resolution | 12 | bits | ||
| INL | Integral nonlinearity error, over full input range | ±1.5 | ±3.0 | LSB | |
| DNL | Differential nonlinearity error, over full input range | ±0.8 | +2.0/–1.0 (14) | LSB | |
| EO | Offset error | ±5.0 | ±15.0 | LSB | |
| EG | Gain error (15) | ±10.0 | ±30.0 | LSB | |
| ET | Total unadjusted error, over full input range (16) | ±10.0 | ±30.0 | LSB | |
| Dynamic characteristics(17)(18) | |||||
| SNRD | Signal-to-noise-ratio, differential input, VADCIN: –20 dB FS, 1 kHz (19) | 68 | 72 | dB | |
| SDRD | Signal-to-distortion ratio, differential input, VADCIN: –3 dB FS, 1 kHz (19)(20)(21) | 70 | 75 | dB | |
| SNDRD | Signal-to-noise+distortion ratio, differential input, VADCIN: –3 dB FS, 1 kHz (19)(22)(23) | 65 | 70 | dB | |
| SNRS | Signal-to-noise-ratio, single-ended input, VADCIN: –20 dB FS, 1 kHz (24) | 58 | 65 | dB | |
| SDRS | Signal-to-distortion ratio, single-ended input, VADCIN: –3 dB FS, 1 kHz (20)(21) | 68 | 72 | dB | |
| SNDRS | Signal-to-noise+distortion ratio, single-ended input, VADCIN: –3 dB FS, 1 kHz (24)(22)(23) | 58 | 63 | dB | |
Figure 5-26 ADC External Reference Filtering
Figure 5-27 ADC Input Equivalency