49.3.3 Analog-to-Digital Converter (ADC) Characteristics

Table 49-4. Differential Mode (1)
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:
  1. These values are based on characterization. These values are not covered by test limits in production.
Table 49-5. Single Ended Mode (1)
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:
  1. These values are based on characterization. These values are not covered by test limits in production.
Table 49-6. Power Consumption (1)
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:
  1. These are based on characterization.