User's Manual

PRELIMINARY
CYBLE-224110-00
Document Number: 002-11264 Rev. *A Page 22 of 43
Temperature Sensor
SAR ADC
Table 20. Comparator AC Specifications
Parameter Description Min Typ Max Unit Details/Conditions
T
RESP1
Response time, normal mode, 50-mV
overdrive
–38– ns50-mV overdrive
T
RESP2
Response time, low-power mode, 50-mV
overdrive
–70– ns50-mV overdrive
T
RESP3
Response time, ultra-low-power mode,
50-mV overdrive
– 2.3 – µs 200-mV overdrive
Table 21. Temperature Sensor Specifications
Parameter Description Min Typ Max Unit Details/Conditions
T
SENSACC
Temperature-sensor accuracy –5 ±1 5 °C –40 to +85 °C
Table 22. SAR ADC DC Specifications
Parameter Description Min Typ Max Unit Details/Conditions
A_RES Resolution – – 12 bits –
A_CHNIS_S Number of channels - single-ended – – 8 – 8 full-speed
A-CHNKS_D Number of channels - differential – – 4
– Diff inputs use
neighboring I/O
A-MONO Monotonicity – – – – Yes
A_GAINERR Gain error – – ±0.1 % With external reference
A_OFFSET Input offset voltage – – 2 mV
Measured with 1-V
V
REF
A_ISAR Current consumption – – 1 mA –
A_VINS Input voltage range - single-ended V
SS
–V
DDA
V–
A_VIND Input voltage range - differential V
SS
– V
DDA
V–
A_INRES Input resistance – – 2.2 kΩ –
A_INCAP Input capacitance – – 10 pF –
VREFSAR Trimmed internal reference to SAR –1 – 1 %
Percentage of Vbg
(1.024 V)
Table 23. SAR ADC AC Specifications
Parameter Description Min Typ Max Unit Details/Conditions
A_PSRR Power-supply rejection ratio 70 – – dB
Measured at 1-V
reference
A_CMRR Common-mode rejection ratio 66 – – dB –
A_SAMP Sample rate – – 1 Msps –
Fsarintref
SAR operating speed without external ref.
bypass
– – 100 Ksps 12-bit resolution
A_SNR Signal-to-noise ratio (SNR) 65 – – dB F
IN
= 10 kHz
A_BW Input bandwidth without aliasing – – A_SAMP/2 kHz –
A_INL
Integral nonlinearity. V
DD
= 1.71V to 5.5V, 1
Msps
–1.7 – 2 LSB V
REF
= 1V to V
DD