ADS1232

更新时间： 2024-09-30 11:48:11

品牌	Logo	应用领域
德州仪器 - TI		转换器传感器
页数	文件大小	规格书
34页	630K
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24-Bit Analog-to-Digital Converter For Bridge Sensors

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ADS1232 数据手册

ADS1232

ADS1234

www.ti.com

SBAS350F–JUNE 2005–REVISED FEBRUARY 2008

24-Bit Analog-to-Digital Converter

For Bridge Sensors

FEATURES

DESCRIPTION

•

Complete Front-End for Bridge Sensors

The ADS1232 and ADS1234 are precision 24-bit

analog-to-digital converters (ADCs). With an onboard,

low-noise programmable gain amplifier (PGA),

precision delta-sigma ADC and internal oscillator, the

ADS1232/4 provide a complete front-end solution for

bridge sensor applications including weigh scales,

strain gauges and pressure sensors.

•

Up to 23.5 Effective Bits

Onboard, Low-Noise PGA

RMS Noise:

17nV at 10SPS (PGA = 128)

44nV at 80SPS (PGA = 128)

•

19.2-Bit Noise-Free Resolution at Gain = 64

The input multiplexer accepts either two (ADS1232)

or four (ADS1234) differential inputs. The ADS1232

also includes an onboard temperature sensor to

monitor ambient temperature. The onboard, low-noise

PGA has a selectable gain of 1, 2, 64, or 128

supporting a full-scale differential input of ±2.5V,

±1.25V, ±39mV, or ±19.5mV. The delta-sigma ADC

has 23.5-bit effective resolution and is comprised of a

3rd-order modulator and 4th-order digital filter. Two

data rates are supported: 10SPS (with both 50Hz and

60Hz rejection) and 80SPS. The ADS1232/4 can be

clocked externally using an oscillator or a crystal.

There is also an internal oscillator available that

requires no external components. Offset calibration is

performed on-demand and the ADS1232/4 can be

put in a low-power standby mode or shut off

completely in power-down mode. All of the features of

the ADS1232/4 are operated through simple

pin-driven control. There are no digital registers to

program in order to simplify software development.

Data are output over an easily-isolated serial

interface that connects directly to the MSP430 and

other microcontrollers.

Over 100dB Simultaneous 50Hz and 60Hz

Rejection

•

Flexible Clocking:

Low-Drift Onboard Oscillator (±3%)

Optional External Crystal

•

Selectable Gains of 1, 2, 64, and 128

Easy Ratiometric Measurements–

External Voltage Reference up to 5V

•

Selectable 10SPS or 80SPS Data Rates

Two-Channel Differential Input with Built-In

Temperature Sensor (ADS1232)

•

Four-Channel Differential Input (ADS1234)

Simple Serial Digital Interface

Supply Range: 2.7V to 5.3V

–40°C to +105°C Temperature Range

APPLICATIONS

•

Weigh Scales

Strain Gauges

Pressure Sensors

Industrial Process Control

The ADS1232 is available in a TSSOP-24 package

and the ADS1234 is in a TSSOP-28. Both are fully

specified from -40°C to +105°C.

CAP

REFP REFN

DVDD

AVDD

GAIN [1:0]

PDWN

Gain =

AINP1

AINN1

1, 2, 64, or 128

AINP2

AINN2

DRDY/DOUT

SCLK

Input

Mux

PGA

DS ADC

AINP3

AINN3

Internal Oscillator

External Oscillator

ADS1234

SPEED

AINP4

AINN4

Only

A1/TEMP⁽¹⁾A0

AGND

CAP

CLKIN/XTAL1 XTAL2

DGND

NOTE: (1) A1 for ADS1234, TEMP for ADS1232.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

All trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

12 3 4 5 6 7...34

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ADS1232 替代型号

型号	品牌	替代类型	描述	数据表
ADS1231	TI	功能相似	24-Bit Analog-to-Digital Converter for Bridge Sensors

与ADS1232相关器件

型号	品牌	获取价格	描述	数据表
ADS1232_14	TI	获取价格	24-Bit Analog-to-Digital Converter For Bridge Sensors
ADS1232IPW	TI	获取价格	24-Bit Analog-to-Digital Converter For Bridge Sensors
ADS1232IPWG4	TI	获取价格	24-Bit Analog-to-Digital Converter For Bridge Sensors
ADS1232IPWR	TI	获取价格	24-Bit Analog-to-Digital Converter For Bridge Sensors
ADS1232IPWRG4	TI	获取价格	24-Bit Analog-to-Digital Converter For Bridge Sensors
ADS1232IPWT	TI	获取价格	IC,A/D CONVERTER,SINGLE,24-BIT,TSSOP,24PIN
ADS1232REF	TI	获取价格	USER GUIDE
ADS1234	TI	获取价格	24-Bit Analog-to-Digital Converter For Bridge Sensors
ADS1234	BB	获取价格	Ultra Low-Noise, 24-Bit Analog-to-Digital Converter
ADS1234IPW	TI	获取价格	24-Bit Analog-to-Digital Converter For Bridge Sensors

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