Cypress EZ-BLE PRoC CYBL11172-56LQXI, Manual

Page: 18 / 39

Document Number: 002-02521 Rev. *F Page 18 of 39
CYBLE-012011-00
CYBLE-012012-10
Temperature Sensor
SAR ADC
Table 16. XRES AC Specifications
Parameter Description Min Typ Max Units Details/Conditions
T
RESETWIDTH
Reset pulse width 1 – – µs –
Table 17. Temperature Sensor Specifications
Parameter Description Min Typ Max Units Details/Conditions
T
SENSACC
Temperature-sensor accuracy –5 ±1 5 °C –40 to +85 °C
Note
8. A maximum of eight single-ended ADC Channels can be accomplished only if the AMUX Buses are not being used for other funcitonality (e.g. CapSense). If
the AMUX Buses are being used for other functions, then the maximum number of single-ended ADC channels is six. Similarly, if the AMUX Buses are being
used for other functionality, then the maximum number of differential ADC channels is three.
Table 18. SAR ADC DC Specifications
Parameter Description Min Typ Max Units Details/Conditions
A_RES Resolution – – 12 bits
A_CHNIS_S Number of channels - single-ended – – 8 8 full-speed
[8]
A-CHNKS_D Number of channels - differential – – 4 Diff inputs use
neighboring I/O
[8]
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 k

A_INCAP Input capacitance – – 10 pF
VREFSAR Trimmed internal reference to SAR –1 – 1 % Percentage of Vbg
(1.024 V)
Table 19. SAR ADC AC Specifications
Parameter Description Min Typ Max Units
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
= 1.71 V to
5.5 V, 1 Msps
–1.7 – 2 LSB V
REF
= 1 V to V
DD
A_INL Integral nonlinearity. V
DDD
= 1.71 V to
3.6 V, 1 Msps
–1.5 – 1.7 LSB V
REF
= 1.71 V to V
DD