Specifications

TABLE 11 SAR ADC DC SPECIFICATIONS
A_OFFSET Input offset voltage - - 2 mV Measured with
1-V VREF
A_ISAR Current consumption - - 1 mA -
A_VINS Input voltage range -
single-ended
VSS - VDDA V -
A_VIND Input voltage range -
differential
VSS - VDDA V -
A_INRES Input resistance - - 2.2 k Ω -
A_INCAP Input capacitance - - 10 pF -
VREFSAR Trimmed internal
reference to SAR
-1 - 1 % Percentage of
Vbg(1.024-V)
TABLE 12 SAR AC SPECIFICATIONS
Parameter
Description
Min
Typ
Max
Units
Details/Conditi
ons
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 Sample rate at
806 Ksps
Fsarintref SAR operating speed
without external ref.
Bypass
- - 100 Ksps 12-bit
resolution
A_snr Signal-to-noise ratio
(SNR)
65 - - dB Fin = 10 kHz
A_bw Input bandwidth without
aliasing
- - A_samp/2 kHz
A_inl Integral non linearity.
V
DD
= 1.71 to 5.5 V, 1
Msps
-1.7 - 2 LSB Vref = 1 Vto
VDD
A_INL Integral non linearity.
V
DDD
= 1.71 to 3.6 V, 1
Msps
-1.5 - 1.7 LSB Vref = 1.71 Vto
VDD
A_INL Integral non linearity.
V
DD
= 1.71 to 5.5 V,
500 Ksps
-1.5 - 1.7 LSB Vref = 1 V to
VDD
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