ADS1262 datasheet(5/134 Pages) TAOS

5 / 134 page

ADS1262, ADS1263

www.ti.com

SBAS661B – FEBRUARY 2015 – REVISED JULY 2015

Pin Functions

I/O

DESCRIPTION

NO.

NAME

AIN8

Analog input/output

Analog input 8, IDAC1, IDAC2, GPIO5

AIN9

Analog input/output

Analog input 9, IDAC1, IDAC2, GPIO6

AINCOM

Analog input/output

Analog input common, IDAC1, IDAC2, GPIO7, VBIAS

CAPP

Analog output

PGA output P: connect a 4.7-nF C0G dielectric capacitor from CAPP to CAPN

CAPN

Analog output

PGA output N: connect a 4.7-nF C0G dielectric capacitor from CAPP to CAPN

AVDD

Analog

Positive analog power supply

AVSS

Analog

Negative analog power supply

REFOUT

Analog Output

Internal reference voltage output, connect 1-µF capacitor to AVSS

START

Digital Input

Start conversion control

Digital Input

Serial interface chip select (active low)

SCLK

Digital Input

Serial interface shift clock

DIN

Digital Input

Serial interface data input

DOUT/DRDY

Digital output

Serial interface data output and data ready indicator (active low)

DRDY

Digital output

Data ready indicator (active low)

1) Internal oscillator: Connect to DGND

XTAL1/CLKIN

Digital Input

2) External clock: Connect clock input

3) Crystal oscillator: Connect to crystal and crystal load capacitor

1) Internal oscillator: No connection (float)

XTAL2

Digital Input

2) External clock: No connection (float)

3) Crystal oscillator: Connect to crystal and crystal load capacitor

BYPASS

Analog Output

2-V sub-regulator external bypass; connect 1-µF capacitor to DGND

DGND

Digital

Digital ground

DVDD

Digital

Digital power supply

RESET/PWDN

Digital input

Reset (active low); hold low to power down the ADC

AIN0

Analog input/output

Analog input 0, REFP1, IDAC1, IDAC2

AIN1

Analog input/output

Analog input 1, REFN1, IDAC1, IDAC2

AIN2

Analog input/output

Analog input 2 ,REFP2, IDAC1, IDAC2

AIN3

Analog input/output

Analog input 3, REFN2, IDAC1, IDAC2, GPIO0

AIN4

Analog input/output

Analog input 4, REFP3, IDAC1, IDAC2, GPIO1

AIN5

Analog input/output

Analog input 5, REFN3, IDAC1, IDAC2, GPIO2

AIN6

Analog input/output

Analog input 6, IDAC1, IDAC2, GPIO3, TDACP

AIN7

Analog input/output

Analog input 7, IDAC1, IDAC2, GPIO4, TDACN

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