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Document Number: 002-12597 Rev. **
Page 19 of 38
PRELIMINARY
CYBLE-212020-01
CSD
A_dnl
Differential nonlinearity. V
DD
= 1.71 V to
5.5 V, 1 Msps
–1
–
2.2
LSB
V
REF
= 1 V to V
DD
A_DNL
Differential nonlinearity. V
DD
= 1.71 V to
3.6 V, 1 Msps
–1
– 2
LSB
V
REF
= 1.71 V to V
DD
A_DNL
Differential nonlinearity. V
DD
= 1.71 V to
5.5 V, 500 Ksps
–1
– 2.2
LSB
V
REF
= 1 V to V
DD
A_THD
Total harmonic distortion
–
–
–65
dB
F
IN
= 10 kHz
Table 19. SAR ADC AC Specifications
(continued)
Parameter
Description
Min
Typ
Max
Units
Details/
Conditions
CSD Block Specifications
Parameter
Description
Min
Typ
Max
Units
Details/
Conditions
V
CSD
Voltage range of operation
1.71
–
5.5
V
IDAC1
DNL for 8-bit resolution
–1
–
1
LSB
IDAC1
INL for 8-bit resolution
–3
–
3
LSB
IDAC2
DNL for 7-bit resolution
–1
–
1
LSB
IDAC2
INL for 7-bit resolution
–3
–
3
LSB
SNR
Ratio of counts of finger to noise
5
–
–
Ratio
Capacitance range of
9 pF to 35 pF, 0.1-pF
sensitivity. Radio is not
operating during the
scan
I
DAC1_CRT1
Output current of IDAC1 (8 bits) in High
range
–
612
–
µA
I
DAC1_CRT2
Output current of IDAC1 (8 bits) in Low
range
–
306
–
µA
I
DAC2_CRT1
Output current of IDAC2 (7 bits) in High
range
–
305
–
µA
I
DAC2_CRT2
Output current of IDAC2 (7 bits) in Low
range
–
153
–
µA