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SLG46140
9.0 8-bit SAR ADC Analog-to-Digital Converter (ADC)
The Analog to Digital Converter in the SLG46140 is an 8-bit Successive Approximation Register Analog to Digital Converter (SAR
ADC) which operates at a sampling speed of 100 kHz. The ADC’s DNL < ± 0.5 LSB and INL < ± 3.4 LSB and has a ADC V
REF
accuracy of ± 50 mV. The ADC consists of two parts: PGA which provides signal amplification and conditioning and SAR ADC
which handles analog to digital conversion. PGA can be used as amplifier when ADC is disabled. Please see section
for more details. User controlled inputs and outputs of the ADC are listed below:
Inputs:
•
CH SELECTOR: Single-Ended Mode ADC Selection and Analog Input Mux Control Signal (PIN 11, VDD)
•
IN+: Single-Ended Mode Input (PIN6 or PIN7) and Differential Mode Positive Input (PIN6)
•
IN-: Differential Mode Negative Input (PIN 7 or DAC0)
•
VREF: ADC Voltage Reference Input (ADC V
REF
, VDD/4, none)
•
CLK or CLK/16: ADC Clock Input (Ring OSC, Ext. CLK2 (matrix_out67), RC OSC, SPI SCLK)
•
Wake/Sleep
Outputs:
•
PGA_Out: Output of the PGA to PIN4
•
PGA_Out: Output of the PGA to ACMP1
•
SER DATA: ADC serial output (SPI)
•
PAR DATA: 8-bit ADC parallel data to either the SPI, PWM, or DCMP
•
INT_ OUT: ADC Interrupt Output (matrix_in50)
Содержание GreenPAK SLG46140
Страница 102: ...000 0046140 111 Page 101 of 169 SLG46140 14 1 Initial Polarity Operations Figure 54 DFF Polarity Operations ...
Страница 103: ...000 0046140 111 Page 102 of 169 SLG46140 Figure 55 DFF Polarity Operations with nReset ...
Страница 104: ...000 0046140 111 Page 103 of 169 SLG46140 Figure 56 DFF Polarity Operations with nSet ...