ADS1225IRGVRG4 datasheet(5/30 Pages) TI1

Part #	ADS1225IRGVRG4

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

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Manufacturer	TI1 [Texas Instruments]

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PIN CONFIGURATION

START

SCLK

DRDY/DOUT

BUFEN

GND

AINN1

AINP1

NC

1

2

3

4

12

11

10

9

ADS1225

ADS1226

www.ti.com ....................................................................................................................................................... SBAS346C – MAY 2006 – REVISED JANUARY 2009

RGV PACKAGE

QFN-16, 4.0mm × 4.0mm

(TOP VIEW)

PIN DESCRIPTIONS—ADS1225

TERMINAL

ANALOG/DIGITAL

NAME

NO.

INPUT/OUTPUT

DESCRIPTION

START

1

Digital Input

High: Start conversions; Low: Shutdown

SCLK

2

Digital Input

Serial clock input

Dual-purpose output:

DRDY/DOUT

3

Digital Output

Data ready: indicates valid data by going low.

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

BUFEN

4

Digital Input

Enables buffer after MUX

GND

5

Ground

Analog and digital ground

TEMPEN

6

Digital Input

Selects temperature sensor input from MUX

MODE

7

Digital Input

Selects between High-Speed and High-Resolution modes

NC

8

No connect

NC

9

No connect

AINP1

10

Analog Input

Analog channel 1 positive input

AINN1

11

Analog Input

Analog channel 1 negative input

GND

12

Ground

Analog and digital ground

VREFN

13

Analog Input

Negative reference input

VREFP

14

Analog Input

Positive reference input

AVDD

15

Analog

Analog power supply

DVDD

16

Digital

Digital power supply

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Product Folder Link(s): ADS1225 ADS1226

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ADS1225IRGVRG4 Datasheet(PDF) 5 Page - Texas Instruments

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