ADS8699IPWR datasheet(54/74 Pages) TI2

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7.6.1.6 RANGE_SEL_REG Register (address = 14h)

This register controls the configuration of the internal reference and input voltage ranges for the converter.

Figure 7-22. RANGE_SEL_REG Register

Reserved

R-0000h

Reserved

Reser

ved

INTREF_ DIS

Reserved

RANGE_SEL[3:0]

R-00h

R-0b

R/W-0b

R-00b

R/W-<0000>b

LEGEND: R/W = Read/Write; R = Read only; -n = value after reset; -0, -1 = Condition after application reset;

LEGEND: -<0>, -<1> = Condition after power-on reset

Address for bits 7-0 = 14h

Address for bits 15-8 = 15h

Address for bits 23-16 = 16h

Address for bits 31-24 = 17h

Table 7-16. RANGE_SEL_REG Register Field Descriptions

Bit

Field

Type

Reset

Description

31-16

Reserved

0000h

Reserved. Reads return 0000h.

15-8

Reserved

00h

Reserved. Reads return 00h.

Reserved

Reserved. Reads return 0b.

INTREF_DIS

R/W

Control to disable the ADC internal reference.

0b = Internal reference is enabled

1b = Internal reference is disabled

5-4

Reserved

00b

Reserved. Reads return 00b.

3-0

RANGE_SEL[3:0]

R/W

0000b

These bits comprise the 4-bit register that selects the nine input ranges of

the ADC.

0000b = ±3 × VREF

0001b = ±2.5 × VREF

0010b = ±1.5 × VREF

0011b = ±1.25 × VREF

0100b = ±0.625 × VREF

1000b = 3 × VREF

1001b = 2.5 × VREF

1010b = 1.5 × VREF

1011b = 1.25 × VREF

ADS8691, ADS8695, ADS8699

SBAS777B – DECEMBER 2016 – REVISED MARCH 2021

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