ADS1226 View Datasheet(PDF) - Analog Devices

Part Name

Description

Manufacturer

ADS1226

24-Bit Analog-to-Digital Converter with One- and Two-Channel Differential Inputs and Internal Oscillator

Analog Devices 

ADS1225

ADS1226

SBAS346 – MAY 2006

RGV PACKAGE

QFN-16 4.0mm x 4.0mm

(TOP VIEW)

www.ti.com

START 1

SCLK 2

DRDY/DOUT 3

BUFEN 4

ADS1226

12 GND

11 AINN1

10 AINP1

9 AINN2

NAME

START

SCLK

TERMINAL

NO.

1

2

DRDY/DOUT

3

BUFEN

4

MUX

5

TEMPEN

6

MODE

7

AINP2

8

AINN2

9

AINP1

10

AINN1

11

GND

12

VREFN

13

VREFP

14

AVDD

15

DVDD

16

PIN DESCRIPTIONS – ADS1226

ANALOG/DIGITAL

INPUT/OUTPUT

Digital Input

Digital Input

Digital Output

Digital Input

Digital Input

Digital Input

Digital Input

Analog Input

Analog Input

Analog Input

Analog Input

Ground

Analog Input

Analog Input

Analog

Digital

DESCRIPTION

High: Start conversions; Low: Shutdown

Serial clock input

Dual-purpose output:

Data ready: indicates valid data by going low.

Data output: outputs data, MSB first, on the rising edge of SCLK.

Enables buffer after MUX

Selects analog input from MUX

Selects temperature sensor input from MUX

Selects between High-Speed and High-Resolution modes

Analog channel 2 positive input

Analog channel 2 negative input

Analog channel 1 positive input

Analog channel 1 negative input

Analog and digital ground

Negative reference input

Positive reference input

Analog power supply

Digital power supply

6

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