Datasheet > ADS1291

ADS1291

更新时间： 2024-11-09 11:46:07

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德州仪器 - TI		/
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描述
Low-Power, 2-Channel, 24-Bit Analog Front-End for Biopotential Measurements

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ADS1291 数据手册

ADS1291

ADS1292

ADS1292R

www.ti.com

SBAS502A –DECEMBER 2011–REVISED MARCH 2012

Low-Power, 2-Channel, 24-Bit Analog Front-End for Biopotential Measurements

Check for Samples: ADS1291, ADS1292 , ADS1292R

The

ADS1291,

ADS1292,

and

ADS1292R

FEATURES

incorporate all features commonly required in

portable, low-power medical electrocardiogram

(ECG), sports, and fitness applications.

•

Two Low-Noise PGAs and

Two High-Resolution ADCs

(ADS1292 and ADS1292R)

With high levels of integration and exceptional

performance, the ADS1291, ADS1292, and

ADS1292R enable the creation of scalable medical

instrumentation systems at significantly reduced size,

power, and overall cost.

•

Low Power: 335 μW/channel

Input-Referred Noise: 8 μV_PP

(150-Hz BW, G = 6)

•

Input Bias Current: 200 pA

Data Rate: 125 SPS to 8 kSPS

CMRR: –105 dB

The ADS1291, ADS1292, and ADS1292R have a

flexible input multiplexer per channel that can be

independently connected to the internally-generated

signals for test, temperature, and lead-off detection.

Additionally, any configuration of input channels can

be selected for derivation of the right leg drive (RLD)

output signal. The ADS1291, ADS1292, and

ADS1292R operate at data rates up to 8 kSPS. Lead-

off detection can be implemented internal to the

device, using the device internal excitation current

sink/source. The ADS1292R version includes a fully

integrated respiration impedance measurement

function.

Programmable Gain: 1, 2, 3, 4, 6, 8, or 12

Supplies: Unipolar or Bipolar

–

Analog: 2.7 V to 5.25 V

Digital: 1.7 V to 3.6 V

•

Built-In Right Leg Drive Amplifier, Lead-Off

Detection, Test Signals

Integrated Respiration Impedance

Measurement (ADS1292R)

•

Built-In Oscillator and Reference

The devices are packaged in a 5-mm × 5-mm, 32-pin

thin quad flat pack (TQFP). Operating temperature is

specified from –40°C to +85°C.

Flexible Power-Down, Standby Mode

SPI™-Compatible Serial Interface

Operating Temperature Range: –40°C to +85°C

REF

Test Signals and

Monitors

APPLICATIONS

Reference

SPI

•

Medical Instrumentation (ECG) including:

(ADS1292R)

–

Patient monitoring: Holter, event, stress,

and vital signs including ECG, AED, and

telemedicine

RESP

DEMOD

ADC1

ADC2

Oscillator

MUX

Control

–

Sports and fitness

(heart rate, respiration, and ECG)

To Channel

•

High-Precision, Simultaneous, Multichannel

Signal Acquisition

(ADS1292R)

RESP

MOD

DESCRIPTION

RESP

The ADS1291, ADS1292, and ADS1292R are

multichannel, simultaneous sampling, 24-bit, delta-

sigma (ΔΣ) analog-to-digital converters (ADCs) with a

built-in programmable gain amplifier (PGA), internal

reference, and an onboard oscillator.

RLD

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.

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 the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

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与ADS1291相关器件

型号	品牌	获取价格	描述	数据表
ADS1291I	TI	获取价格	Low-Power, 2-Channel, 24-Bit Analog Front-End for Biopotential Measurements
ADS1291IPBS	TI	获取价格	Low-Power, 2-Channel, 24-Bit Analog Front-End for Biopotential Measurements
ADS1291IPBSR	TI	获取价格	Low-Power, 2-Channel, 24-Bit Analog Front-End for Biopotential Measurements
ADS1291IRSMR	TI	获取价格	适用于 ECG 应用的 24 位、单通道、低功耗模拟前端 (AFE) \| RSM \| 32
ADS1291IRSMT	TI	获取价格	适用于 ECG 应用的 24 位、单通道、低功耗模拟前端 (AFE) \| RSM \| 32
ADS1292	TI	获取价格	Low-Power, 2-Channel, 24-Bit Analog Front-End for Biopotential Measurements
ADS1292I	TI	获取价格	Low-Power, 2-Channel, 24-Bit Analog Front-End for Biopotential Measurements
ADS1292IPBS	TI	获取价格	Low-Power, 2-Channel, 24-Bit Analog Front-End for Biopotential Measurements
ADS1292IPBSR	TI	获取价格	Low-Power, 2-Channel, 24-Bit Analog Front-End for Biopotential Measurements
ADS1292IRSMR	TI	获取价格	适用于 ECG 应用的 24 位、2 通道、低功耗模拟前端 (AFE) \| RSM \| 3

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