ADS1114 datasheet(8/33 Pages) TI1

Part #	ADS1114

Description	Ultra-Small, Low-Power, 12-Bit Analog-to-Digital Converter with Internal Reference

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Manufacturer	TI1 [Texas Instruments]

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VDD

GND

SCL

SDA

ADDR

A

T

(ADS1014/5Only)

LER

AIN0

AIN1

AIN2(ADS1015Only)

AIN3(ADS1015Only)

SCL

SDA

1

F

00n

I C-Capabl Master

e

(

)

MSP430

2

ADS1 13/4/

0

5

+3.3V

VDD

GND

1

F

00n

+3.3V

JTAG

Serial

AR

/U

T

+3.3V

10kW

ADS1013

ADS1014

ADS1015

SBAS473C – MAY 2009 – REVISED OCTOBER 2009

www.ti.com

QUICKSTART GUIDE

For example, to write to the configuration register to

set the ADS1013/4/5 to continuous conversion mode

This section provides a brief example of ADS1013/4/5

and then read the conversion result, send the

communications. Refer to subsequent sections of this

following bytes in this order:

data sheet for more detailed explanations. Hardware

for this design includes: one ADS1013/4/5 configured

Write to Config register:

with an I2C address of 1001000; a microcontroller

First byte: 0b10010000 (first 7-bit I2C address

with an I2C interface (TI recommends the MSP430

followed by a low read/write bit)

product line); discrete components such as resistors,

capacitors, and serial connectors; and a 2V to 5V

Second byte: 0b00000001 (points to Config register)

power supply. Figure 9 shows the basic hardware

Third byte: 0b00000100 (MSB of the Config register

configuration.

to be written)

The ADS1013/4/5 communicate with the master

Fourth byte: 0b10000011 (LSB of the Config register

(microcontroller) through an I2C interface. The master

to be written)

provides a clock signal on the SCL pin and data are

transferred via the SDA pin. The ADS1013/4/5 never

Write to Pointer register:

drive the SCL pin. For information on programming

First byte: 0b10010000 (first 7-bit I2C address

and debugging the microcontroller being used, refer

followed by a low read/write bit)

to the device-specific product data sheet.

Second byte: 0b00000000 (points to Conversion

The first byte sent by the master should be the

register)

ADS1013/4/5 address followed by a bit that instructs

the ADS1013/4/5 to listen for a subsequent byte. The

Read Conversion register:

second byte is the register pointer. Refer to Table 6

First byte: 0b10010001 (first 7-bit I2C address

for a register map. The third and fourth bytes sent

followed by a high read/write bit)

from the master are written to the register indicated in

the second byte. Refer to Figure 16 and Figure 17 for

Second byte: the ADS1013/4/5 response with the

read

and

write

operation

timing

diagrams,

MSB of the Conversion register

respectively. All read and write transactions with the

Third byte: the ADS1013/4/5 response with the LSB

ADS1013/4/5 must be preceded by a start condition

of the Conversion register

and followed by a stop condition.

Figure 9. Basic Hardware Configuration

8

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Product Folder Link(s): ADS1013 ADS1014 ADS1015

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