Datasheet > ADS1282_1

ADS1282_1

更新时间： 2024-11-01 06:36:23

品牌	Logo	应用领域
德州仪器 - TI		转换器
页数	文件大小	规格书
52页	1564K
描述
High-Resolution Analog-to-Digital Converter

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ADS1282_1 数据手册

ADS1282

www.ti.com ........................................................................................................................................ SBAS418E–SEPTEMBER 2007–REVISED OCTOBER 2008

High-Resolution Analog-to-Digital Converter

FEATURES

DESCRIPTION

•

High Resolution:

The ADS1282 is an extremely high-performance,

single-chip analog-to-digital converter (ADC) with an

integrated, low-noise programmable gain amplifier

(PGA) and two-channel input multiplexer (MUX). The

ADS1282 is suitable for the demanding needs of

130dB SNR (250SPS, High-Resolution Mode)

127dB SNR (250SPS, Low-Power Mode)

•

High Accuracy:

THD: –122dB

INL: 0.5ppm

energy

exploration

and

seismic

monitoring

environments.

•

Low-Noise PGA

The converter uses a fourth-order, inherently stable,

delta-sigma (ΔΣ) modulator that provides outstanding

noise and linearity performance. The modulator is

used either in conjunction with the on-chip digital

filter, or can be bypassed for use with post

processing filters.

Two-Channel Input MUX

Inherently-Stable Modulator with Fast

Responding Over-Range Detection

•

Flexible Digital Filter:

Sinc + FIR + IIR (Selectable)

Linear or Minimum Phase Response

Programmable High-Pass Filter

Selectable FIR Data Rates: 250SPS to 4kSPS

The flexible input MUX provides an additional

external input for measurement, as well as internal

self-test connections. The PGA features outstanding

low noise (5nV/√Hz) and high input impedance,

allowing easy interfacing to geophones and

hydrophones over a wide range of gains.

•

Filter Bypass Option

Low Power Consumption:

High-Resolution Mode: 25mW

Low-Power Mode: 17mW

Shutdown: 10µW

The digital filter provides selectable data rates from

250 to 4000 samples per second (SPS). The

high-pass filter (HPF) features an adjustable corner

frequency. On-chip gain and offset scaling registers

support system calibration.

•

Offset and Gain Calibration Engine

SYNC Input

Analog Supply:

Unipolar (+5V) or Bipolar (±2.5V)

The synchronization input (SYNC) can be used to

synchronize the conversions of multiple ADS1282s.

The SYNC input also accepts a clock input for

continuous alignment of conversions from an external

source.

•

Digital Supply: 1.8V to 3.3V

APPLICATIONS

Two operating modes allow optimization of noise and

power. Together, the amplifier, modulator, and filter

dissipate 25mW and only 17mW in low-power mode.

The ADS1282 is available in a compact TSSOP-28

package and is fully specified from –40°C to +85°C,

with a maximum operating range to +125°C.

•

Energy Exploration

Seismic Monitoring

High-Accuracy Instrumentation

AVDD

VREFN VREFP

DVDD

CLK

ADS1282

SCLK

DOUT

DIN

Input 1

Input 2

4th-Order

Programmable

Digital Filter

SPI

PGA

Calibration

Interface

Modulator

DRDY

V_COM

Over-Range

SYNC

RESET

PWDN

Control

Modulator Output

AVSS

DGND

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...52

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与ADS1282_1相关器件

型号	品牌	获取价格	描述	数据表
ADS1282HIPW	TI	获取价格	用于地震监测和能源勘探且具有 PGA 的超高分辨率 4kSPS 2 通道 Δ-Σ ADC
ADS1282HIPWR	TI	获取价格	Ultra-high-resolution 4-kSPS 2-channel delta-sigma ADC with PGA for seismic and energy exp
ADS1282HKV/EM	TI	获取价格	高分辨率模数转换器 (ADC) \| HKV \| 28 \| 25 to 25
ADS1282HPW	TI	获取价格	HIGH-RESOLUTION ANALOG-TO-DIGITAL CONVERTER
ADS1282-HT	TI	获取价格	14-BITS, 65 MSPS ADC WITH DDR LVDS/CMOS OUTPUTS
ADS1282-HT_16	TI	获取价格	High-Temperature High-Resolution Delta Sigma ADC
ADS1282IPW	TI	获取价格	High-Resolution Analog-to-Digital Converter
ADS1282IPWG4	TI	获取价格	High-Resolution Analog-to-Digital Converter
ADS1282IPWR	TI	获取价格	High-Resolution Analog-to-Digital Converter
ADS1282IPWRG4	TI	获取价格	High-Resolution Analog-to-Digital Converter

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