Cypress EZ-BLE PRoC, Руководство пользователя

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Document Number: 002-12597 Rev. ** Page 18 of 38
PRELIMINARY
CYBLE-212020-01
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
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
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 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
A_INL Integral nonlinearity. V
DD
= 1.71 V to 5.5 V,
500 Ksps
–1.5 – 1.7 LSB V
REF
= 1 V to V
DD