49.3.3 Analog-to-Digital Converter (ADC) Characteristics
| Symbol | Parameter | Conditions | Measurement | Unit | |||
|---|---|---|---|---|---|---|---|
| Min | Typ | Max | |||||
| ENOB | Effective Number of bits | Fadc = 500ksps - R2R disabled | Vddana=5.0V Vref=Vddana | 9.9 | 10.7 | 11.4 | bits |
| Vddana=2.7V Vref=2.0V | 10.0 | 10.8 | 11.3 | ||||
| Fadc = 1Msps - R2R disabled | Vddana=5.0V Vref=Vddana | 9.7 | 10.6 | 11.3 | |||
| Vddana=2.7V Vref=2.0V | 9.8 | 10.6 | 11.2 | ||||
| Fadc = 500ksps - R2R Enabled | Vddana=5.0V Vref=Vddana | 9.8 | 11.3 | 11.9 | |||
| Fadc = 1Msps - R2R Enabled | Vddana=5.0V Vref=Vddana | 9.7 | 11.1 | 11.8 | |||
| TUE | Total Unadjusted Error | Fadc = 500ksps - R2R
disabled with offset and gain compensation (REFCOMP = 1 and OFFCOMP = 1) | Vddana=5.0V Vref=Vddana | - | +/-4.6 | +/-8.3 | LSB |
| Vddana=2.7V Vref=2.0V | - | +/-4.3 | +/-8.3 | ||||
| Fadc = 1Msps - R2R disabled
with offset and gain compensation (REFCOMP = 1 and OFFCOMP = 1) | Vddana=5.0V Vref=Vddana | - | +/-4.2 | +/-7.1 | |||
| Vddana=2.7V Vref=2.0V | - | +/-4.8 | +/-8.3 | ||||
| INL | Integral Non Linearity | Fadc = 500ksps - R2R disabled | Vddana=5.0V Vref=Vddana | - | +/-1.6 | +/-3.5 | LSB |
| Vddana=2.7V Vref=2.0V | - | +/-1.9 | +/-3.9 | ||||
| Fadc = 1Msps - R2R disabled | Vddana=5.0V Vref=Vddana | - | +/-1.5 | +/-4 | |||
| Vddana=2.7V Vref=2.0V | - | +/-3.2 | +/-4.1 | ||||
| DNL | Differential Non Linearity | Fadc = 500ksps - R2R disabled | Vddana=5.0V Vref=Vddana | - | -0.8/+1 | -1/+2.0 | LSB |
| Vddana=2.7V Vref=2.0V | - | -0.7/+1.3 | -1/+2.2 | ||||
| Fadc = 1Msps - R2R disabled | Vddana=5.0V Vref=Vddana | - | -0.8/+1.1 | -1/+2.0 | |||
| Vddana=2.7V Vref=2.0V | - | -0.9/+1.6 | -1/+3.7 | ||||
| GE | Gain Error | Fadc = 1Msps - R2R disabled w/o gain compensation | Vddana=5.0V Vref=Vddana | - | +/-0.8 | +/-1.8 | % |
| Vddana=2.7V Vref=2.0V | - | +/-0.9 | +/-3.2 | ||||
| Vddana=5.0V 1V internal Ref | - | +/-1.9 | +/-7.3 | ||||
| Vddana=5.0V Vref=Vddana/2 | - | +/-0.1 | +/-1.3 | ||||
| Fadc = 1Msps - R2R disabled with gain compensation | Vddana=2.7V Vref=2.0V | - | +/-0.1 | +/-0.5 | |||
| Vddana=5.0V Vref=Vddana/2 | - | +/-0.2 | +/-0.7 | ||||
| OE | Offset Error | Fadc = 1Msps - R2R disabled without offset compensation | Vddana=5.0V Vref=Vddana/2 | - | +/-0.2 | +/-25 | mV |
| Vddana=2.7V Vref=2.0V | - | +/-1.4 | +/-17 | ||||
| Fadc = 1Msps - R2R disabled with offset compensation | Vddana=5.0V Vref=Vddana/2 | - | +/-2 | +/-10 | |||
| Vddana=2.7V Vref=2.0V | - | +/-0.2 | +/-11 | ||||
| SFDR | Spurious Free Dynamic Range | Fs = 1Msps / Fin = 14 kHz / Full range Input signal Vddana=5.0V Vref=Vddana | 63 | 75 | 81 | dB | |
| SINAD | Signal to Noise and Distortion ratio | 60 | 67 | 70 | |||
| SNR | Signal to Noise ratio | 64 | 68 | 70 | |||
| THD | Total Harmonic Distortion | -81 | -74 | -63 | |||
| Noise RMS | External Reference voltage | - | 0.5 | 3.3 | mV | ||
Note:
- These values are based on characterization. These values are not covered by test limits in production.
| Symbol | Parameter | Conditions | Measurement | Unit | |||
|---|---|---|---|---|---|---|---|
| Min | Typ | Max | |||||
| ENOB | Effective Number of bits | Fadc = 500ksps - R2R disabled | Vddana=3.0V Vref=Vddana | 9.0 | 9.7 | 10.2 | bits |
| Vddana=3.0V Vref=2.0V | 9.0 | 9.4 | 10.1 | ||||
| Fadc = 1Msps - R2R disabled | Vddana=3.0V Vref=Vddana | 8.9 | 9.7 | 10.0 | |||
| Vddana=3.0V Vref=2.0V | 8.9 | 9.2 | 9.7 | ||||
| TUE | Total Unadjusted Error | Fadc = 500ksps - R2R
disabled with offset and gain compensation (REFCOMP = 1 and OFFCOMP = 1) | Vddana=5.0V Vref=Vddana | - | 18 | +/-28 | LSB |
| Vddana=2.7V Vref=2.0V | - | 30 | +/-55 | ||||
| Fadc = 1Msps - R2R disabled
with offset and gain compensation (REFCOMP = 1 and OFFCOMP = 1) | Vddana=5.0V Vref=Vddana | - | 18 | +/-28 | |||
| Vddana=2.7V Vref=2.0V | - | 30 | +/-57 | ||||
| INL | Integral Non Linearity | Fadc = 500ksps - R2R disabled | Vddana=5.0V Vref=Vddana | - | +/-2.4 | +/-6.5 | |
| Vddana=2.7V Vref=2.0V | - | +/-3.7 | +/-7.1 | ||||
| Fadc = 1Msps - R2R disabled | Vddana=5.0V Vref=Vddana | - | +/-2.2 | +/-7.5 | LSB | ||
| Vddana=2.7V Vref=2.0V | - | +/-4.1 | +/-7.1 | ||||
| DNL | Differential Non Linearity | Fadc = 500ksps - R2R disabled | Vddana=5.0V Vref=Vddana | - | -0.8/+1.1 | -1/+1.9 | |
| Vddana=2.7V Vref=2.0V | - | -0.8/+1.1 | -1/+2.5 | ||||
| Fadc = 1Msps - R2R disabled | Vddana=5.0V Vref=Vddana | - | -0.8/+1 | -1/+1.9 | |||
| Vddana=2.7V Vref=2.0V | - | -1/+1.4 | -1/+3.1 | ||||
| GE | Gain Error | Fadc = 1Msps - R2R disabled w/o gain compensation | Vddana=5.0V Vref=Vddana | - | +/-0.4 | +/-1.1 | % |
| Vddana=2.7V Vref=2.0V | - | +/-0.7 | +/-1.9 | ||||
| Vddana=5.0V 1V internal Ref | - | +/-1.6 | +/-7.4 | ||||
| Vddana=5.0V Vref=Vddana/2 | - | +/-0.2 | +/-1.4 | ||||
| Fadc = 1Msps - R2R disabled with gain compensation | Vddana=2.7V Vref=2.0V | - | +/-0.3 | +/-0.9 | |||
| Vddana=5.0V Vref=Vddana/2 | - | +/-0.1 | +/-1.4 | ||||
| OE | Offset Error | Fadc = 1Msps - R2R disabled | Vddana=5.0V Vref=Vddana | - | +/-31 | +/-76 | mV |
| Vddana=2.7V Vref=2.0V | - | +/-2.2 | +/-64 | ||||
| SFDR | Spurious Free Dynamic Range | Fs = 1Msps / Fin = 14 kHz / Full range Input signal Vddana=5.0V Vref=Vddana | 57 | 71 | 73 | dB | |
| SINAD | Signal to Noise and Distortion ratio | 54 | 60 | 62 | |||
| SNR | Signal to Noise ratio | 57 | 61 | 62 | |||
| THD | Total Harmonic Distortion | -71 | -70 | -56 | |||
| Noise RMS | External Reference voltage | - | 0.7 | 2 | mV | ||
Note:
- These values are based on characterization. These values are not covered by test limits in production.
| Symbol | Parameters | Conditions | Ta | Typ. | Max | Units |
|---|---|---|---|---|---|---|
| IDD VDDANA | Differential mode | fs = 1 Msps / Reference buffer disabled / BIASREFBUF = '111', BIASREFCOMP = '111' VDDANA=Vref= 5.5V | Max 125°C Typ 25°C | 905 | 1091 | uA |
| fs = 1 Msps / Reference buffer enabled / BIASREFBUF = '111', BIASREFCOMP = '111' VDDANA=Vref= 5.5V | 1062 | 1310 | ||||
| fs = 10 ksps / Reference buffer disabled / BIASREFBUF = '111', BIASREFCOMP = '111' VDDANA=Vref= 5.5V | 381 | 510 | ||||
| fs = 10 ksps / Reference buffer enabled / BIASREFBUF = '111', BIASREFCOMP = '111' VDDANA=Vref= 5.5V | 525 | 751 | ||||
| Single Ended mode | fs = 1 Msps / Reference buffer disabled / BIASREFBUF = '111', BIASREFCOMP = '111' VDDANA=Vref=5.5V | Max 125°C Typ 25°C | 984 | 1143 | uA | |
| fs = 1 Msps / Reference buffer enabled / BIASREFBUF = '111', BIASREFCOMP = '111' VDDANA=Vref=5.5V | 1103 | 1357 | ||||
| fs = 10 ksps / Reference buffer disabled / BIASREFBUF = '111', BIASREFCOMP = '111' VDDANA=Vref= 5.5V | 437 | 585 | ||||
| fs = 10 ksps / Reference buffer enabled / BIASREFBUF = '111', BIASREFCOMP = '111' VDDANA=Vref= 5.5V | 553 | 786 |
Note:
- These are based on characterization.