ML696201 and ML69Q6203
Preliminary
Analog-to-Digital Converter Characteristics
(VDD_CORE = 1.35 to 1.65 V, V
= 2.7 to 3.6 V, T A = –30 to +70 °C)
DD_IO
Parameter
Resolution [1]
Symbol
n
Condition
—
Min.
—
Typ.
—
Max.
10
Unit
bit
Linearity error [2]
EL
Analog input source
impedance
—
tbd
tbd
tbd
tbd
—
—
LSB
Differential linearity error [3]
Zero-scale error [4]
Full-scale error [5]
ED
—
—
Ri ≤ tbd kΩ
EZS
—
—
EFS
—
—
Conversion time
tCONV
—
—
6.7
10
—
µs
Throughput rate
—
200
kHz
10
1. Resolution Minimum input analog value that can be discriminated. In a 10-bit converter, the number of discrete steps is equal to 2 (= 1024), where 10 is the resolution of the converter, so the voltage from V to
REF
AGND can be divided with 1024.
2. Linearity error is the deviation between the ideal conversion characteristic and the actual conversion characteristic of a 10-bit analog-to-digital converter (not including quantization error). The ideal conversion characteristic
can be obtained by dividing the voltage from V to AGND into 1024 equal steps.
REF
3. Differential linearity error indicates the smoothness of conversion characteristics. The range of the analog input voltage that corresponds to one converted bit of digital output is ideally 1 LSB = (VREF - AGND) /1024. The
differential linearity error is the deviation between this ideal bit size and the bit size at an arbitrary point in the conversion range.
4. Zero-scale error is the deviation between the ideal conversion characteristics and actual conversion characteristics at the point where the digital output changes from "000h" to "001h".
5. Full-scale error is the deviation between the ideal conversion characteristics and actual conversion characteristics at the point where the digital output changes from "3FEh" to "3FFh".
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