Datasheet > ADS1255IDBTG4

ADS1255IDBTG4

更新时间： 2024-09-17 11:07:59

品牌	Logo	应用领域
德州仪器 - TI		/
页数	文件大小	规格书
45页	1002K
描述
24 位 30kSPS 超低噪声 Δ-Σ ADC \| DB \| 20 \| -40 to 85

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ADS1255IDBTG4 数据手册

ADS1255

ADS1256

SBAS288K − JUNE 2003 − REVISED SEPTEMBER 2013

Very Low Noise, 24-Bit

Analog-to-Digital Converter

FEATURES

DESCRIPTION

The ADS1255 and ADS1256 are extremely low-noise,

24 Bits, No Missing Codes

24-bit analog-to-digital (A/D) converters. They provide

complete high-resolution measurement solutions for the

most demanding applications.

− All Data Rates and PGA Settings

Up to 23 Bits Noise-Free Resolution

0.0010% Nonlinearity (max)

The converter is comprised of a 4th-order, delta-sigma

(ΔΣ) modulator followed by a programmable digital filter. A

flexible input multiplexer handles differential or

single-ended signals and includes circuitry to verify the

integrity of the external sensor connected to the inputs.

The selectable input buffer greatly increases the input

impedance and the low-noise programmable gain

amplifier (PGA) provides gains from 1 to 64 in binary steps.

The programmable filter allows the user to optimize

between a resolution of up to 23 bits noise-free and a data

rate of up to 30k samples per second (SPS). The

converters offer fast channel cycling for measuring

multiplexed inputs and can also perform one-shot

conversions that settle in just a single cycle.

Data Output Rates to 30kSPS

Fast Channel Cycling

− 18.6 Bits Noise-Free (21.3 Effective Bits)

at 1.45kHz

One-Shot Conversions with Single-Cycle

Settling

Flexible Input Multiplexer with Sensor Detect

− Four Differential Inputs (ADS1256 only)

− Eight Single-Ended Inputs (ADS1256 only)

Chopper-Stabilized Input Buffer

Low-Noise PGA: 27nV Input-Referred Noise

Self and System Calibration for All PGA

Settings

Communication is handled over an SPI-compatible serial

interface that can operate with a 2-wire connection.

Onboard calibration supports both self and system

correction of offset and gain errors for all the PGA settings.

Bidirectional digital I/Os and a programmable clock output

driver are provided for general use. The ADS1255 is

packaged in an SSOP-20, and the ADS1256 in an

SSOP-28.

5V Tolerant SPI™-Compatible Serial Interface

Analog Supply: 5V

Digital Supply: 1.8V to 3.6V

Power Dissipation

− As Low as 38mW in Normal Mode

− 0.4mW in Standby Mode

AVDD

VREFP VREFN

DVDD

APPLICATIONS

AIN0

AIN1

XTAL1/CLKIN

XTAL2

Clock

Generator

Scientific Instrumentation

Industrial Process Control

Medical Equipment

1:64

PGA

AIN2

AIN3

Mux

and

Sensor

Detect

RESET

4th−Order

Modulator

Programmable

Digital Filter

Buffer

Control

SYNC/PDWN

AIN4

AIN5

AIN6

AIN7

Test and Measurement

Weigh Scales

DRDY

SCLK

DIN

General

Purpose

Digital I/O

Serial

Interface

AINCOM

DOUT

AGND

D3 D2

D1 D0/CLKOUT

DGND

ADS1256

Only

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.

SPI is a trademark of Motorola, Inc. All other 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 Texas Instruments standard warranty.

Production processing does not necessarily include testing of all parameters.

www.ti.com

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ADS1255IDBTG4 替代型号

型号	品牌	替代类型	描述	数据表
ADS1255IDBT	TI	类似代替	Very Low Noise, 24-Bit Analog-to-Digital Converter
ADS1255IDBR	TI	类似代替	Very Low Noise, 24-Bit Analog-to-Digital Converter
ADS1255IDBRG4	TI	类似代替	24-Bit, 30kSPS, Very-Low-Noise Delta-Sigma ADC 20-SSOP -40 to 85

与ADS1255IDBTG4相关器件

型号	品牌	获取价格	描述	数据表
ADS1256	BB	获取价格	Very Low Noise, 24-Bit Analog-to-Digital Converter
ADS1256	TI	获取价格	Industrial, 14kSPS, 24-Bit Analog-to-Digital Converter with Low-Drift Reference
ADS1256IDB	BB	获取价格	Very Low Noise, 24-Bit Analog-to-Digital Converter
ADS1256IDBR	BB	获取价格	Very Low Noise, 24-Bit Analog-to-Digital Converter
ADS1256IDBR	TI	获取价格	Very Low Noise, 24-Bit Analog-to-Digital Converter
ADS1256IDBRG4	TI	获取价格	适用于工厂自动化和过程控制且具有 PGA 的 24 位、30kSPS、8 通道 Δ-Σ A
ADS1256IDBT	BB	获取价格	Very Low Noise, 24-Bit Analog-to-Digital Converter
ADS1256IDBT	TI	获取价格	Very Low Noise, 24-Bit Analog-to-Digital Converter
ADS1256IDBTG4	TI	获取价格	适用于工厂自动化和过程控制且具有 PGA 的 24 位、30kSPS、8 通道 Δ-Σ A
ADS1257	TI	获取价格	具有集成 PGA 的 24 位、30kSPS、4 通道、工业 ADC

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