49.19 ADC Electrical Specifications
AC Characteristics | Standard Operating Conditions: VDD33 = VDDIO = AVDD
= 1.9–3.6V (Unless Otherwise Stated) Operating Temperature: -40°C ≤ TA ≤ +125°C for Extended Temperature | ||||||
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Parameter Number | Symbol | Characteristics | Min. | Typ | Max. | Units | Conditions |
Device Supply | |||||||
ADC_1 | AVDD | ADC Core Supply | AVDD(minimum) | — | AVDD(maximum) | V | — |
Reference Inputs | |||||||
ADC_3 | VREF | ADC Reference Voltage | — | — | AVDD | V | Internal Reference |
Analog Input Range | |||||||
ADC_7 | AFS | Full-Scale Analog Input Signal Range | AVSS | — | VREF | V | Single-Ended Mode |
AC Characteristics | Standard Operating Conditions: VDD33 = VDDIO =
AVDD = 1.9–3.6V (Unless Otherwise Stated) Operating Temperature: -40°C ≤ TA ≤ +125°C for Extended Temperature | ||||||
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Parameter Number | Symbol | Characteristics | Min. | Typ | Max. | Units | Conditions |
Single-Ended Mode ADC Accuracy | |||||||
SADC_11 | Res | Resolution | 6 | — | 12 | bits | Selectable 6, 8, 10, 12-bit Resolution Ranges |
SADC_13 | ENOB(1, 2) | Effective Number of bits | 10 | 10.4 | 10.8 | bits | 1 MSPS, 12-bit Resolution mode VREF = AVDD = VDDIO = 3.3V |
SADC_19 | INL | Integral Nonlinearity | — | -1.6/+1.3 | — | LSB | 1 MSPS, VREF = AVDD = VDDIO = 3.3V |
SADC_25 | DNL | Differential Nonlinearity | — | -1.0/+1.9 | — | LSB | 1 MSPS, VREF = AVDD = VDDIO = 3.3V |
SADC_31 | GERR | Gain Error | — | -0.8 | — | LSB | 1 MSPS, VREF = AVDD = VDDIO = 3.3V |
SADC_37 | EOFF | Offset Error | — | 0.1 | — | LSB | 1 MSPS, VREF = AVDD = VDDIO = 3.3V |
Single-Ended Mode ADC Dynamic Performance | |||||||
SADC_49 | SINAD | Signal to Noise and Distortion | 62 | 64 | — | dB | VREF = AVDD = VDDIO = 3.3V at 12-bit maximum sampling rate |
SADC_51 | SNR | Signal to Noise ratio | 62 | — | — | ||
SADC_53 | SFDR | Spurious Free Dynamic Range | 65 | 68 | — | ||
SADC_55 | THD(3) | Total Harmonic Distortion | — | -83 | -78 | ||
Note:
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AC Characteristics | Standard Operating Conditions: VDD33 = VDDIO = AVDD
= 1.9–3.6V (Unless Otherwise Stated) Operating Temperature: -40°C ≤ TA ≤ +125°C for Extended Temperature | ||||||
---|---|---|---|---|---|---|---|
Parameter Number | Symbol | Characteristics | Min. | Typ | Max. | Units | Conditions |
Single-Ended Mode ADC Accuracy | |||||||
SADC_11 | Res | Resolution | 6 | — | 12 | bits | Selectable 6, 8, 10 and 12-bit Resolution Ranges |
SADC_13 | ENOB(1, 2) | Effective Number of bits | 10.9 | 11.1 | — | bits | 1 MSPS, 12-bit Resolution mode VREF = AVDD = VDDIO = 3.3V |
SADC_19 | INL | Integral Nonlinearity | — | -1.2/+0.9 | — | LSB | 1 MSPS, VREF = AVDD = VDDIO = 3.3V |
SADC_25 | DNL | Differential Nonlinearity | — | -1.0/+1.2 | — | LSB | 1 MSPS, VREF = AVDD = VDDIO = 3.3V |
SADC_31 | GERR | Gain Error | — | -1.2 | — | LSB | 1 MSPS, VREF = AVDD = VDDIO = 3.3V |
SADC_37 | EOFF | Offset Error | — | 2.6 | — | LSB | 1 MSPS, VREF = AVDD = VDDIO = 3.3V |
Single-Ended Mode ADC Dynamic Performance | |||||||
SADC_49 | SINAD | Signal to Noise and Distortion | 67 | 69 | — | dB | VREF = AVDD = VDDIO = 3.3V at 12-bit maximum sampling rate |
SADC_51 | SNR | Signal to Noise ratio | 67 | — | — | ||
SADC_53 | SFDR | Spurious Free Dynamic Range | 78 | 82 | — | ||
SADC_55 | THD(3) | Total Harmonic Distortion | — | -85 | -78 | ||
Note:
|
AC Characteristics | Standard Operating Conditions: VDD33 = VDDIO = AVDD
= 1.9–3.6V (Unless Otherwise Stated) Operating Temperature: -40°C ≤ TA ≤ +125°C for Extended Temperature | ||||||
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Parameter Number | Symbol | Characteristics | Min. | Typ | Max. | Units | Conditions |
ADC Clock Requirements | |||||||
ADC_57 | TQ | ADC Controller Clock Period | 1/fADC_TQ | — | — | ns | — |
ADC_57a | TAD | ADC Core Clock Period | 1/fADC_TAD | — | 1/fADC_TAD | ns | — |
ADC_58 | fADC_TQ | ADC Controller Clock freq | — | — | FCLK_51 | MHz | — |
ADC_58a | fADC_TAD | ADC Core Clock Frequency | 0.14 | — | 32 | MHz | — |
ADC Single-Ended Throughput Rates | |||||||
ADC_59 | FTP (1) (Single-Ended Mode) | ADC0-Throughput Rate (Sampling rate) (Single-Ended) | — | — | 1 | MSPS | 12-bit resolution, Rsource Impedance ≤ 50Ω, SAMC = 1 |
ADC-SHR -Throughput Rate (Sampling rate) (Single-Ended) | — | — | 1 | 12-bit resolution, Rsource Impedance ≤ 50Ω, SAMC = 1 | |||
ADC Conversion and Sample time | |||||||
ADC_63 | TSAMP | ADC Sample Time (ADC0) | 3.5 | — | — | TAD | 12-bit TAD(minimum), External Analog Input Rsource ≤ 200 Ω, Max ADC Clock, SAMC = 1 |
ADC Sample Time (ADC-SHR) | 3.5 | — | — | 12-bit TAD(min), External Analog Input Rsource ≤ 200 Ω, Max ADC Clock | |||
ADC Sample Time (ADC-SHR with ADCCON1.CVDEN bit = 1 ) | 10.5 | — | — | 12-bit TAD(minimum), Ext Analog Input Rsource ≤ 200 Ω, ADCCON2.CVDCPL[2:0] = 111 | |||
ADC_65 | TCNV | Conversion Time (Single-Ended Mode) | 12.5 | TAD | 12-bit resolution | ||
10.5 | 10-bit resolution | ||||||
8.5 | 8-bit resolution | ||||||
6.5 | 6-bit resolution | ||||||
Note:
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