SLG46121V datasheet(73/98 Pages) DIALOG

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SLG46121

13.0 Voltage Reference (VREF)

13.1 Voltage Reference Overview

The SLG46121 has a Voltage Reference Macrocell to provide references to the four analog comparators. This macrocell can

supply a user selection of fixed voltage references, /3 and /4 reference off of the VDD power supply to the device, and externally

supplied voltage references from Pin 4. The macrocell also has the option to output reference voltages on pins 10. See table

below for the available selections for each analog comparator. Also see Figure 45 below, which shows the reference output

structure.

13.2 VREF Selection Table

Table 55. VREF Selection Table.

SEL<4:0>

CMP0_VREF

CMP1_VREF

11010

ext. Vref (PIN4)

11001

VDD / 4

11000

VDD / 3

10111

1.20 V

10110

1.15 V

10101

1.10 V

10100

1.05 V

10011

1.00 V

10010

0.95 V

10001

0.90 V

10000

0.85 V

01111

0.80 V

01110

0.75 V

01101

0.70 V

01100

0.65 V

01011

0.60 V

01010

0.55 V

01001

0.50 V

01000

0.45 V

00111

0.40 V

00110

0.35 V

00101

0.30 V

00100

0.25 V

00011

0.20 V

00010

0.15 V

00001

0.10 V

00000

0.05 V

VDD

Practial VREF Range

Note

3.0 V - 5.5 V

50 mV ~1.2 V

VDD > 3.6 V external Vref cannot be used

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