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ADS1262

更新时间： 2024-10-02 01:24:43

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ADS126x 32-Bit, Precision, 38-kSPS, Analog-to-Digital Converter

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ADS1262, ADS1263

SBAS661B –FEBRUARY 2015–REVISED JULY 2015

ADS126x 32-Bit, Precision, 38-kSPS, Analog-to-Digital Converter (ADC)

with Programmable Gain Amplifier (PGA) and Voltage Reference

1 Features

3 Description

The ADS1262 and ADS1263 are low-noise, low-drift,

38.4-kSPS, delta-sigma (ΔΣ) ADCs with an integrated

PGA, reference, and internal fault monitors. The

ADS1263 integrates an auxiliary, 24-bit, ΔΣ ADC

intended for background measurements. The sensor-

ready ADCs provide complete, high-accuracy, one-

chip measurement solutions for the most-demanding

sensor applications, including weigh scales, strain-

gauge sensors, thermocouples, and resistance

temperature devices (RTD).

•

Precision, 32-bit, ΔΣ ADC

•

Auxiliary 24-Bit, ΔΣ ADC (ADS1263)

Data Rates: 2.5 SPS to 38400 SPS

Differential Input, CMOS PGA

11 Multifunction Analog Inputs

High-Accuracy Architecture

–

Offset Drift: 1 nV/°C

Gain Drift: 0.5 ppm/°C

Noise: 7 nV_RMS(2.5 SPS, Gain = 32)

Linearity: 3 ppm

The ADCs are comprised of a low-noise, CMOS PGA

(gains 1 to 32), a ΔΣ modulator, followed by a

programmable digital filter. The flexible analog front-

end (AFE) incorporates two sensor-excitation current

sources suitable for direct RTD measurement.

•

2.5-V Internal Voltage Reference

Temperature Drift: 2 ppm/°C

–

•

50-Hz and 60-Hz Rejection

A single-cycle settling digital filter maximizes multiple-

input conversion throughput, while providing 130-dB

rejection of 50-Hz and 60-Hz line cycle interference.

Single-Cycle Settled Conversions

Dual Sensor Excitation Current Sources

Internal Fault Monitors

The ADS1262 and ADS1263 are pin and functional

compatible. These devices are available in a 28-pin

TSSOP package and are fully specified over the

–40°C to +125°C temperature range.

Internal ADC Test Signal

8 General-Purpose Input/Outputs

Device Information⁽¹⁾

2 Applications

PART NUMBER

ADS1262

PACKAGE

BODY SIZE (NOM)

•

High-Resolution PLCs

Temperature, Pressure Measurement

Weigh Scales and Strain-Gauge Digitizers

Panel Meters, Chart Recorders

Analytical Instrumentation

TSSOP (28)

9.70 mm × 4.40 mm

ADS1263

(1) For all available packages, see the package option addendum

at the end of the data sheet.

Temperature Compensated Bridge Measurement

ADC Conversion Noise

+5 V

0.25

+3.3 V

Input Range = r78 mV

Data Rate = 20 SPS

Noise = 0.16 PV_P-P

REFOUT

2.5-V Ref

AVDD

DVDD

0.2

ADS1262

ADS1263

Ref

Mux

0.15

+Exc

+Sen

+Sig

AIN0

AIN1

AIN2

AIN3

AIN4

Dual Sensor

Excitation

Ref

Alarm

0.1

0.05

±Sig

Buf

START

RESET/PWDN

±Sen

Sensor Test

Bridge

AIN5

Serial

Interface

and

32-Bit

ûꢀꢀADC

Digital

Filter

AIN6

AIN7

AIN8

DIN

PGA

±Exc

DOUT/DRDY

Control

Input

Mux

-0.05

-0.1

-0.15

-0.2

-0.25

SCLK

DRDY

Signal

Alarm

AIN9

Pt 100

AINCOM

GPIO

Internal

Oscillator

24-Bit

ûꢀꢀADC

Digital

Filter

PGA

Level Shift

Temp Sensor

Test V

XTAL2

ADS1263 Only

Clock

Mux

XTAL1/CLKIN

DGND

AVSS

Time (s)

D017

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.

12 3 4 5 6 7...134

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与ADS1262相关器件

型号	品牌	获取价格	描述	数据表
ADS1262IPW	TI	获取价格	适用于工厂自动化且具有 PGA 和电压基准的 32 位 38kSPS 10 通道 Δ-Σ
ADS1262IPWR	TI	获取价格	适用于工厂自动化且具有 PGA 和电压基准的 32 位 38kSPS 10 通道 Δ-Σ
ADS1263	SAMTEC	获取价格
ADS1263	TI	获取价格	适用于工厂自动化且具有 PGA、基准电压和辅助 ADC 的 32 位 38kSPS 10
ADS1263IPW	SAMTEC	获取价格	32-bit 38-kSPS 10-ch delta-sigma ADC with PGA, VREF and auxiliary ADC for factory automati
ADS1263IPW	TI	获取价格	适用于工厂自动化且具有 PGA、基准电压和辅助 ADC 的 32 位 38kSPS 10
ADS1263IPWR	TI	获取价格	适用于工厂自动化且具有 PGA、基准电压和辅助 ADC 的 32 位 38kSPS 10
ADS-126MC	ETC	获取价格	Analog-to-Digital Converter， 12-Bit
ADS1271	BB	获取价格	24 BIT WIDE BANDWIDTH ANALOG TO DIGITAL CONVERTER
ADS1271	TI	获取价格	适用于宽带宽应用的 24 位、105kSPS 单通道 Δ-Σ ADC

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